Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

13 files changed, 8439 insertions, 0 deletions

diff --git a/gfx/angle/checkout/src/image_util/copyimage.cpp b/gfx/angle/checkout/src/image_util/copyimage.cpp
new file mode 100644
index 0000000000..b5c2773e21
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/copyimage.cpp
@@ -0,0 +1,74 @@
+//
+// Copyright 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// copyimage.cpp: Defines image copying functions
+
+#include "image_util/copyimage.h"
+
+namespace angle
+{
+
+namespace
+{
+inline uint32_t SwizzleBGRAToRGBA(uint32_t argb)
+{
+    return ((argb & 0x000000FF) << 16) |  // Move BGRA blue to RGBA blue
+           ((argb & 0x00FF0000) >> 16) |  // Move BGRA red to RGBA red
+           ((argb & 0xFF00FF00));         // Keep alpha and green
+}
+
+void CopyBGRA8ToRGBA8Fast(const uint8_t *source,
+                          int srcYAxisPitch,
+                          uint8_t *dest,
+                          int destYAxisPitch,
+                          int destWidth,
+                          int destHeight)
+{
+    for (int y = 0; y < destHeight; ++y)
+    {
+        const uint32_t *src32 = reinterpret_cast<const uint32_t *>(source + y * srcYAxisPitch);
+        uint32_t *dest32      = reinterpret_cast<uint32_t *>(dest + y * destYAxisPitch);
+        const uint32_t *end32 = src32 + destWidth;
+        while (src32 != end32)
+        {
+            *dest32++ = SwizzleBGRAToRGBA(*src32++);
+        }
+    }
+}
+}  // namespace
+
+void CopyBGRA8ToRGBA8(const uint8_t *source,
+                      int srcXAxisPitch,
+                      int srcYAxisPitch,
+                      uint8_t *dest,
+                      int destXAxisPitch,
+                      int destYAxisPitch,
+                      int destWidth,
+                      int destHeight)
+{
+    if (srcXAxisPitch == 4 && destXAxisPitch == 4)
+    {
+        CopyBGRA8ToRGBA8Fast(source, srcYAxisPitch, dest, destYAxisPitch, destWidth, destHeight);
+        return;
+    }
+
+    for (int y = 0; y < destHeight; ++y)
+    {
+        uint8_t *dst       = dest + y * destYAxisPitch;
+        const uint8_t *src = source + y * srcYAxisPitch;
+        const uint8_t *end = src + destWidth * srcXAxisPitch;
+
+        while (src != end)
+        {
+            *reinterpret_cast<uint32_t *>(dst) =
+                SwizzleBGRAToRGBA(*reinterpret_cast<const uint32_t *>(src));
+            src += srcXAxisPitch;
+            dst += destXAxisPitch;
+        }
+    }
+}
+
+}  // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/copyimage.h b/gfx/angle/checkout/src/image_util/copyimage.h
new file mode 100644
index 0000000000..9825b86f98
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/copyimage.h
@@ -0,0 +1,46 @@
+//
+// Copyright 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// copyimage.h: Defines image copying functions
+
+#ifndef IMAGEUTIL_COPYIMAGE_H_
+#define IMAGEUTIL_COPYIMAGE_H_
+
+#include "common/Color.h"
+
+#include "image_util/imageformats.h"
+
+#include <stdint.h>
+
+namespace angle
+{
+
+template <typename sourceType, typename colorDataType>
+void ReadColor(const uint8_t *source, uint8_t *dest);
+
+template <typename destType, typename colorDataType>
+void WriteColor(const uint8_t *source, uint8_t *dest);
+
+template <typename SourceType>
+void ReadDepthStencil(const uint8_t *source, uint8_t *dest);
+
+template <typename DestType>
+void WriteDepthStencil(const uint8_t *source, uint8_t *dest);
+
+void CopyBGRA8ToRGBA8(const uint8_t *source,
+                      int srcXAxisPitch,
+                      int srcYAxisPitch,
+                      uint8_t *dest,
+                      int destXAxisPitch,
+                      int destYAxisPitch,
+                      int destWidth,
+                      int destHeight);
+
+}  // namespace angle
+
+#include "copyimage.inc"
+
+#endif  // IMAGEUTIL_COPYIMAGE_H_
diff --git a/gfx/angle/checkout/src/image_util/copyimage.inc b/gfx/angle/checkout/src/image_util/copyimage.inc
new file mode 100644
index 0000000000..42ad6b9421
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/copyimage.inc
@@ -0,0 +1,38 @@
+//
+// Copyright 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// copyimage.inc: Defines image copying functions
+
+namespace angle
+{
+template <typename sourceType, typename colorDataType>
+void ReadColor(const uint8_t *source, uint8_t *dest)
+{
+    sourceType::readColor(reinterpret_cast<Color<colorDataType>*>(dest),
+                          reinterpret_cast<const sourceType*>(source));
+}
+
+template <typename destType, typename colorDataType>
+void WriteColor(const uint8_t *source, uint8_t *dest)
+{
+    destType::writeColor(reinterpret_cast<destType*>(dest),
+                         reinterpret_cast<const Color<colorDataType>*>(source));
+}
+
+template <typename SourceType>
+void ReadDepthStencil(const uint8_t *source, uint8_t *dest)
+{
+    SourceType::ReadDepthStencil(reinterpret_cast<DepthStencil *>(dest),
+                                 reinterpret_cast<const SourceType *>(source));
+}
+
+template <typename DestType>
+void WriteDepthStencil(const uint8_t *source, uint8_t *dest)
+{
+    DestType::WriteDepthStencil(reinterpret_cast<DestType *>(dest),
+                                reinterpret_cast<const DepthStencil *>(source));
+}
+}  // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/generatemip.h b/gfx/angle/checkout/src/image_util/generatemip.h
new file mode 100644
index 0000000000..523c296298
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/generatemip.h
@@ -0,0 +1,34 @@
+//
+// Copyright 2002 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// generatemip.h: Defines the GenerateMip function, templated on the format
+// type of the image for which mip levels are being generated.
+
+#ifndef IMAGEUTIL_GENERATEMIP_H_
+#define IMAGEUTIL_GENERATEMIP_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace angle
+{
+
+template <typename T>
+inline void GenerateMip(size_t sourceWidth,
+                        size_t sourceHeight,
+                        size_t sourceDepth,
+                        const uint8_t *sourceData,
+                        size_t sourceRowPitch,
+                        size_t sourceDepthPitch,
+                        uint8_t *destData,
+                        size_t destRowPitch,
+                        size_t destDepthPitch);
+
+}  // namespace angle
+
+#include "generatemip.inc"
+
+#endif  // IMAGEUTIL_GENERATEMIP_H_
diff --git a/gfx/angle/checkout/src/image_util/generatemip.inc b/gfx/angle/checkout/src/image_util/generatemip.inc
new file mode 100644
index 0000000000..7a7f5abe9c
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/generatemip.inc
@@ -0,0 +1,268 @@
+//
+// Copyright 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// generatemip.inc: Defines the GenerateMip function, templated on the format
+// type of the image for which mip levels are being generated.
+
+#include "common/mathutil.h"
+
+#include "image_util/imageformats.h"
+
+namespace angle
+{
+
+namespace priv
+{
+
+template <typename T>
+static inline T *GetPixel(uint8_t *data, size_t x, size_t y, size_t z, size_t rowPitch, size_t depthPitch)
+{
+    return reinterpret_cast<T*>(data + (x * sizeof(T)) + (y * rowPitch) + (z * depthPitch));
+}
+
+template <typename T>
+static inline const T *GetPixel(const uint8_t *data, size_t x, size_t y, size_t z, size_t rowPitch, size_t depthPitch)
+{
+    return reinterpret_cast<const T*>(data + (x * sizeof(T)) + (y * rowPitch) + (z * depthPitch));
+}
+
+template <typename T>
+static void GenerateMip_Y(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                          const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                          size_t destWidth, size_t destHeight, size_t destDepth,
+                          uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    ASSERT(sourceWidth == 1);
+    ASSERT(sourceHeight > 1);
+    ASSERT(sourceDepth == 1);
+
+    for (size_t y = 0; y < destHeight; y++)
+    {
+        const T *src0 = GetPixel<T>(sourceData, 0, y * 2, 0, sourceRowPitch, sourceDepthPitch);
+        const T *src1 = GetPixel<T>(sourceData, 0, y * 2 + 1, 0, sourceRowPitch, sourceDepthPitch);
+        T *dst = GetPixel<T>(destData, 0, y, 0, destRowPitch, destDepthPitch);
+
+        T::average(dst, src0, src1);
+    }
+}
+
+template <typename T>
+static void GenerateMip_X(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                          const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                          size_t destWidth, size_t destHeight, size_t destDepth,
+                          uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    ASSERT(sourceWidth > 1);
+    ASSERT(sourceHeight == 1);
+    ASSERT(sourceDepth == 1);
+
+    for (size_t x = 0; x < destWidth; x++)
+    {
+        const T *src0 = GetPixel<T>(sourceData, x * 2, 0, 0, sourceRowPitch, sourceDepthPitch);
+        const T *src1 = GetPixel<T>(sourceData, x * 2 + 1, 0, 0, sourceRowPitch, sourceDepthPitch);
+        T *dst = GetPixel<T>(destData, x, 0, 0, destRowPitch, destDepthPitch);
+
+        T::average(dst, src0, src1);
+    }
+}
+
+template <typename T>
+static void GenerateMip_Z(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                          const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                          size_t destWidth, size_t destHeight, size_t destDepth,
+                          uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    ASSERT(sourceWidth == 1);
+    ASSERT(sourceHeight == 1);
+    ASSERT(sourceDepth > 1);
+
+    for (size_t z = 0; z < destDepth; z++)
+    {
+        const T *src0 = GetPixel<T>(sourceData, 0, 0, z * 2, sourceRowPitch, sourceDepthPitch);
+        const T *src1 = GetPixel<T>(sourceData, 0, 0, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+        T *dst = GetPixel<T>(destData, 0, 0, z, destRowPitch, destDepthPitch);
+
+        T::average(dst, src0, src1);
+    }
+}
+
+template <typename T>
+static void GenerateMip_XY(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                           const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                           size_t destWidth, size_t destHeight, size_t destDepth,
+                           uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    ASSERT(sourceWidth > 1);
+    ASSERT(sourceHeight > 1);
+    ASSERT(sourceDepth == 1);
+
+    for (size_t y = 0; y < destHeight; y++)
+    {
+        for (size_t x = 0; x < destWidth; x++)
+        {
+            const T *src0 = GetPixel<T>(sourceData, x * 2, y * 2, 0, sourceRowPitch, sourceDepthPitch);
+            const T *src1 = GetPixel<T>(sourceData, x * 2, y * 2 + 1, 0, sourceRowPitch, sourceDepthPitch);
+            const T *src2 = GetPixel<T>(sourceData, x * 2 + 1, y * 2, 0, sourceRowPitch, sourceDepthPitch);
+            const T *src3 = GetPixel<T>(sourceData, x * 2 + 1, y * 2 + 1, 0, sourceRowPitch, sourceDepthPitch);
+            T *dst = GetPixel<T>(destData, x, y, 0, destRowPitch, destDepthPitch);
+
+            T tmp0, tmp1;
+
+            T::average(&tmp0, src0, src1);
+            T::average(&tmp1, src2, src3);
+            T::average(dst, &tmp0, &tmp1);
+        }
+    }
+}
+
+template <typename T>
+static void GenerateMip_YZ(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                           const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                           size_t destWidth, size_t destHeight, size_t destDepth,
+                           uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    ASSERT(sourceWidth == 1);
+    ASSERT(sourceHeight > 1);
+    ASSERT(sourceDepth > 1);
+
+    for (size_t z = 0; z < destDepth; z++)
+    {
+        for (size_t y = 0; y < destHeight; y++)
+        {
+            const T *src0 = GetPixel<T>(sourceData, 0, y * 2, z * 2, sourceRowPitch, sourceDepthPitch);
+            const T *src1 = GetPixel<T>(sourceData, 0, y * 2, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+            const T *src2 = GetPixel<T>(sourceData, 0, y * 2 + 1, z * 2, sourceRowPitch, sourceDepthPitch);
+            const T *src3 = GetPixel<T>(sourceData, 0, y * 2 + 1, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+            T *dst = GetPixel<T>(destData, 0, y, z, destRowPitch, destDepthPitch);
+
+            T tmp0, tmp1;
+
+            T::average(&tmp0, src0, src1);
+            T::average(&tmp1, src2, src3);
+            T::average(dst, &tmp0, &tmp1);
+        }
+    }
+}
+
+template <typename T>
+static void GenerateMip_XZ(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                           const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                           size_t destWidth, size_t destHeight, size_t destDepth,
+                           uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    ASSERT(sourceWidth > 1);
+    ASSERT(sourceHeight == 1);
+    ASSERT(sourceDepth > 1);
+
+    for (size_t z = 0; z < destDepth; z++)
+    {
+        for (size_t x = 0; x < destWidth; x++)
+        {
+            const T *src0 = GetPixel<T>(sourceData, x * 2, 0, z * 2, sourceRowPitch, sourceDepthPitch);
+            const T *src1 = GetPixel<T>(sourceData, x * 2, 0, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+            const T *src2 = GetPixel<T>(sourceData, x * 2 + 1, 0, z * 2, sourceRowPitch, sourceDepthPitch);
+            const T *src3 = GetPixel<T>(sourceData, x * 2 + 1, 0, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+            T *dst = GetPixel<T>(destData, x, 0, z, destRowPitch, destDepthPitch);
+
+            T tmp0, tmp1;
+
+            T::average(&tmp0, src0, src1);
+            T::average(&tmp1, src2, src3);
+            T::average(dst, &tmp0, &tmp1);
+        }
+    }
+}
+
+template <typename T>
+static void GenerateMip_XYZ(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                            const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                            size_t destWidth, size_t destHeight, size_t destDepth,
+                            uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    ASSERT(sourceWidth > 1);
+    ASSERT(sourceHeight > 1);
+    ASSERT(sourceDepth > 1);
+
+    for (size_t z = 0; z < destDepth; z++)
+    {
+        for (size_t y = 0; y < destHeight; y++)
+        {
+            for (size_t x = 0; x < destWidth; x++)
+            {
+                const T *src0 = GetPixel<T>(sourceData, x * 2, y * 2, z * 2, sourceRowPitch, sourceDepthPitch);
+                const T *src1 = GetPixel<T>(sourceData, x * 2, y * 2, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+                const T *src2 = GetPixel<T>(sourceData, x * 2, y * 2 + 1, z * 2, sourceRowPitch, sourceDepthPitch);
+                const T *src3 = GetPixel<T>(sourceData, x * 2, y * 2 + 1, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+                const T *src4 = GetPixel<T>(sourceData, x * 2 + 1, y * 2, z * 2, sourceRowPitch, sourceDepthPitch);
+                const T *src5 = GetPixel<T>(sourceData, x * 2 + 1, y * 2, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+                const T *src6 = GetPixel<T>(sourceData, x * 2 + 1, y * 2 + 1, z * 2, sourceRowPitch, sourceDepthPitch);
+                const T *src7 = GetPixel<T>(sourceData, x * 2 + 1, y * 2 + 1, z * 2 + 1, sourceRowPitch, sourceDepthPitch);
+                T *dst = GetPixel<T>(destData, x, y, z, destRowPitch, destDepthPitch);
+
+                T tmp0, tmp1, tmp2, tmp3, tmp4, tmp5;
+
+                T::average(&tmp0, src0, src1);
+                T::average(&tmp1, src2, src3);
+                T::average(&tmp2, src4, src5);
+                T::average(&tmp3, src6, src7);
+
+                T::average(&tmp4, &tmp0, &tmp1);
+                T::average(&tmp5, &tmp2, &tmp3);
+
+                T::average(dst, &tmp4, &tmp5);
+            }
+        }
+    }
+}
+
+
+typedef void (*MipGenerationFunction)(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                                      const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                                      size_t destWidth, size_t destHeight, size_t destDepth,
+                                      uint8_t *destData, size_t destRowPitch, size_t destDepthPitch);
+
+template <typename T>
+static MipGenerationFunction GetMipGenerationFunction(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth)
+{
+    uint8_t index = ((sourceWidth > 1)  ? 1 : 0) |
+                    ((sourceHeight > 1) ? 2 : 0) |
+                    ((sourceDepth > 1)  ? 4 : 0);
+
+    switch (index)
+    {
+      case 0: return nullptr;
+      case 1: return GenerateMip_X<T>;   // W x 1 x 1
+      case 2: return GenerateMip_Y<T>;   // 1 x H x 1
+      case 3: return GenerateMip_XY<T>;  // W x H x 1
+      case 4: return GenerateMip_Z<T>;   // 1 x 1 x D
+      case 5: return GenerateMip_XZ<T>;  // W x 1 x D
+      case 6: return GenerateMip_YZ<T>;  // 1 x H x D
+      case 7: return GenerateMip_XYZ<T>; // W x H x D
+    }
+
+    UNREACHABLE();
+    return nullptr;
+}
+
+}  // namespace priv
+
+template <typename T>
+inline void GenerateMip(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
+                        const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
+                        uint8_t *destData, size_t destRowPitch, size_t destDepthPitch)
+{
+    size_t mipWidth = std::max<size_t>(1, sourceWidth >> 1);
+    size_t mipHeight = std::max<size_t>(1, sourceHeight >> 1);
+    size_t mipDepth = std::max<size_t>(1, sourceDepth >> 1);
+
+    priv::MipGenerationFunction generationFunction = priv::GetMipGenerationFunction<T>(sourceWidth, sourceHeight, sourceDepth);
+    ASSERT(generationFunction != nullptr);
+
+    generationFunction(sourceWidth, sourceHeight, sourceDepth, sourceData, sourceRowPitch, sourceDepthPitch,
+                       mipWidth, mipHeight, mipDepth, destData, destRowPitch, destDepthPitch);
+}
+
+}  // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/imageformats.cpp b/gfx/angle/checkout/src/image_util/imageformats.cpp
new file mode 100644
index 0000000000..368b6d95d7
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/imageformats.cpp
@@ -0,0 +1,1954 @@
+//
+// Copyright 2016 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// imageformats.cpp: Defines image format types with functions for mip generation
+// and copying.
+
+#include "image_util/imageformats.h"
+
+#include "common/mathutil.h"
+
+namespace angle
+{
+
+void L8::readColor(gl::ColorF *dst, const L8 *src)
+{
+    const float lum = gl::normalizedToFloat(src->L);
+    dst->red        = lum;
+    dst->green      = lum;
+    dst->blue       = lum;
+    dst->alpha      = 1.0f;
+}
+
+void L8::writeColor(L8 *dst, const gl::ColorF *src)
+{
+    dst->L = gl::floatToNormalized<uint8_t>(src->red);
+}
+
+void L8::average(L8 *dst, const L8 *src1, const L8 *src2)
+{
+    dst->L = gl::average(src1->L, src2->L);
+}
+
+void R8::readColor(gl::ColorUI *dst, const R8 *src)
+{
+    dst->red   = src->R;
+    dst->green = 0;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R8::readColor(gl::ColorF *dst, const R8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R8::writeColor(R8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+}
+
+void R8::writeColor(R8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+}
+
+void R8::average(R8 *dst, const R8 *src1, const R8 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+}
+
+void A8::readColor(gl::ColorF *dst, const A8 *src)
+{
+    dst->red   = 0.0f;
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void A8::writeColor(A8 *dst, const gl::ColorF *src)
+{
+    dst->A = gl::floatToNormalized<uint8_t>(src->alpha);
+}
+
+void A8::average(A8 *dst, const A8 *src1, const A8 *src2)
+{
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void L8A8::readColor(gl::ColorF *dst, const L8A8 *src)
+{
+    const float lum = gl::normalizedToFloat(src->L);
+    dst->red        = lum;
+    dst->green      = lum;
+    dst->blue       = lum;
+    dst->alpha      = gl::normalizedToFloat(src->A);
+}
+
+void L8A8::writeColor(L8A8 *dst, const gl::ColorF *src)
+{
+    dst->L = gl::floatToNormalized<uint8_t>(src->red);
+    dst->A = gl::floatToNormalized<uint8_t>(src->alpha);
+}
+
+void L8A8::average(L8A8 *dst, const L8A8 *src1, const L8A8 *src2)
+{
+    *(uint16_t *)dst = (((*(uint16_t *)src1 ^ *(uint16_t *)src2) & 0xFEFE) >> 1) +
+                       (*(uint16_t *)src1 & *(uint16_t *)src2);
+}
+
+void A8L8::readColor(gl::ColorF *dst, const A8L8 *src)
+{
+    const float lum = gl::normalizedToFloat(src->L);
+    dst->red        = lum;
+    dst->green      = lum;
+    dst->blue       = lum;
+    dst->alpha      = gl::normalizedToFloat(src->A);
+}
+
+void A8L8::writeColor(A8L8 *dst, const gl::ColorF *src)
+{
+    dst->L = gl::floatToNormalized<uint8_t>(src->red);
+    dst->A = gl::floatToNormalized<uint8_t>(src->alpha);
+}
+
+void A8L8::average(A8L8 *dst, const A8L8 *src1, const A8L8 *src2)
+{
+    *(uint16_t *)dst = (((*(uint16_t *)src1 ^ *(uint16_t *)src2) & 0xFEFE) >> 1) +
+                       (*(uint16_t *)src1 & *(uint16_t *)src2);
+}
+
+void R8G8::readColor(gl::ColorUI *dst, const R8G8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R8G8::readColor(gl::ColorF *dst, const R8G8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R8G8::writeColor(R8G8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+}
+
+void R8G8::writeColor(R8G8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+}
+
+void R8G8::average(R8G8 *dst, const R8G8 *src1, const R8G8 *src2)
+{
+    *(uint16_t *)dst = (((*(uint16_t *)src1 ^ *(uint16_t *)src2) & 0xFEFE) >> 1) +
+                       (*(uint16_t *)src1 & *(uint16_t *)src2);
+}
+
+void R8G8B8::readColor(gl::ColorUI *dst, const R8G8B8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->G;
+    dst->alpha = 1;
+}
+
+void R8G8B8::readColor(gl::ColorF *dst, const R8G8B8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R8G8B8::writeColor(R8G8B8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+    dst->B = static_cast<uint8_t>(src->blue);
+}
+
+void R8G8B8::writeColor(R8G8B8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+}
+
+void R8G8B8::average(R8G8B8 *dst, const R8G8B8 *src1, const R8G8B8 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void B8G8R8::readColor(gl::ColorUI *dst, const B8G8R8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->G;
+    dst->alpha = 1;
+}
+
+void B8G8R8::readColor(gl::ColorF *dst, const B8G8R8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void B8G8R8::writeColor(B8G8R8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+    dst->B = static_cast<uint8_t>(src->blue);
+}
+
+void B8G8R8::writeColor(B8G8R8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+}
+
+void B8G8R8::average(B8G8R8 *dst, const B8G8R8 *src1, const B8G8R8 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void R5G6B5::readColor(gl::ColorF *dst, const R5G6B5 *src)
+{
+    dst->red   = gl::normalizedToFloat<5>(gl::getShiftedData<5, 11>(src->RGB));
+    dst->green = gl::normalizedToFloat<6>(gl::getShiftedData<6, 5>(src->RGB));
+    dst->blue  = gl::normalizedToFloat<5>(gl::getShiftedData<5, 0>(src->RGB));
+    dst->alpha = 1.0f;
+}
+
+void R5G6B5::writeColor(R5G6B5 *dst, const gl::ColorF *src)
+{
+    dst->RGB = gl::shiftData<5, 11>(gl::floatToNormalized<5, uint16_t>(src->red)) |
+               gl::shiftData<6, 5>(gl::floatToNormalized<6, uint16_t>(src->green)) |
+               gl::shiftData<5, 0>(gl::floatToNormalized<5, uint16_t>(src->blue));
+}
+
+void R5G6B5::average(R5G6B5 *dst, const R5G6B5 *src1, const R5G6B5 *src2)
+{
+    dst->RGB = gl::shiftData<5, 11>(gl::average(gl::getShiftedData<5, 11>(src1->RGB),
+                                                gl::getShiftedData<5, 11>(src2->RGB))) |
+               gl::shiftData<6, 5>(gl::average(gl::getShiftedData<6, 5>(src1->RGB),
+                                               gl::getShiftedData<6, 5>(src2->RGB))) |
+               gl::shiftData<5, 0>(gl::average(gl::getShiftedData<5, 0>(src1->RGB),
+                                               gl::getShiftedData<5, 0>(src2->RGB)));
+}
+
+void B5G6R5::readColor(gl::ColorF *dst, const B5G6R5 *src)
+{
+    dst->red   = gl::normalizedToFloat<5>(gl::getShiftedData<5, 11>(src->BGR));
+    dst->green = gl::normalizedToFloat<6>(gl::getShiftedData<6, 5>(src->BGR));
+    dst->blue  = gl::normalizedToFloat<5>(gl::getShiftedData<5, 0>(src->BGR));
+    dst->alpha = 1.0f;
+}
+
+void B5G6R5::writeColor(B5G6R5 *dst, const gl::ColorF *src)
+{
+    dst->BGR = gl::shiftData<5, 0>(gl::floatToNormalized<5, unsigned short>(src->blue)) |
+               gl::shiftData<6, 5>(gl::floatToNormalized<6, unsigned short>(src->green)) |
+               gl::shiftData<5, 11>(gl::floatToNormalized<5, unsigned short>(src->red));
+}
+
+void B5G6R5::average(B5G6R5 *dst, const B5G6R5 *src1, const B5G6R5 *src2)
+{
+    dst->BGR = gl::shiftData<5, 11>(gl::average(gl::getShiftedData<5, 11>(src1->BGR),
+                                                gl::getShiftedData<5, 11>(src2->BGR))) |
+               gl::shiftData<6, 5>(gl::average(gl::getShiftedData<6, 5>(src1->BGR),
+                                               gl::getShiftedData<6, 5>(src2->BGR))) |
+               gl::shiftData<5, 0>(gl::average(gl::getShiftedData<5, 0>(src1->BGR),
+                                               gl::getShiftedData<5, 0>(src2->BGR)));
+}
+
+void A8R8G8B8::readColor(gl::ColorUI *dst, const A8R8G8B8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void A8R8G8B8::readColor(gl::ColorF *dst, const A8R8G8B8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void A8R8G8B8::writeColor(A8R8G8B8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+    dst->B = static_cast<uint8_t>(src->blue);
+    dst->A = static_cast<uint8_t>(src->alpha);
+}
+
+void A8R8G8B8::writeColor(A8R8G8B8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+    dst->A = gl::floatToNormalized<uint8_t>(src->alpha);
+}
+
+void A8R8G8B8::average(A8R8G8B8 *dst, const A8R8G8B8 *src1, const A8R8G8B8 *src2)
+{
+    *(uint32_t *)dst = (((*(uint32_t *)src1 ^ *(uint32_t *)src2) & 0xFEFEFEFE) >> 1) +
+                       (*(uint32_t *)src1 & *(uint32_t *)src2);
+}
+
+void R8G8B8A8::readColor(gl::ColorUI *dst, const R8G8B8A8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R8G8B8A8::readColor(gl::ColorF *dst, const R8G8B8A8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void R8G8B8A8::writeColor(R8G8B8A8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+    dst->B = static_cast<uint8_t>(src->blue);
+    dst->A = static_cast<uint8_t>(src->alpha);
+}
+
+void R8G8B8A8::writeColor(R8G8B8A8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+    dst->A = gl::floatToNormalized<uint8_t>(src->alpha);
+}
+
+void R8G8B8A8::average(R8G8B8A8 *dst, const R8G8B8A8 *src1, const R8G8B8A8 *src2)
+{
+    *(uint32_t *)dst = (((*(uint32_t *)src1 ^ *(uint32_t *)src2) & 0xFEFEFEFE) >> 1) +
+                       (*(uint32_t *)src1 & *(uint32_t *)src2);
+}
+
+void R8G8B8A8SRGB::readColor(gl::ColorF *dst, const R8G8B8A8SRGB *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void R8G8B8A8SRGB::writeColor(R8G8B8A8SRGB *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+    dst->A = gl::floatToNormalized<uint8_t>(src->alpha);
+}
+
+void R8G8B8A8SRGB::average(R8G8B8A8SRGB *dst, const R8G8B8A8SRGB *src1, const R8G8B8A8SRGB *src2)
+{
+    dst->R =
+        gl::linearToSRGB(static_cast<uint8_t>((static_cast<uint16_t>(gl::sRGBToLinear(src1->R)) +
+                                               static_cast<uint16_t>(gl::sRGBToLinear(src2->R))) >>
+                                              1));
+    dst->G =
+        gl::linearToSRGB(static_cast<uint8_t>((static_cast<uint16_t>(gl::sRGBToLinear(src1->G)) +
+                                               static_cast<uint16_t>(gl::sRGBToLinear(src2->G))) >>
+                                              1));
+    dst->B =
+        gl::linearToSRGB(static_cast<uint8_t>((static_cast<uint16_t>(gl::sRGBToLinear(src1->B)) +
+                                               static_cast<uint16_t>(gl::sRGBToLinear(src2->B))) >>
+                                              1));
+    dst->A = static_cast<uint8_t>(
+        (static_cast<uint16_t>(src1->A) + static_cast<uint16_t>(src2->A)) >> 1);
+}
+
+void B8G8R8A8::readColor(gl::ColorUI *dst, const B8G8R8A8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void B8G8R8A8::readColor(gl::ColorF *dst, const B8G8R8A8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void B8G8R8A8::writeColor(B8G8R8A8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+    dst->B = static_cast<uint8_t>(src->blue);
+    dst->A = static_cast<uint8_t>(src->alpha);
+}
+
+void B8G8R8A8::writeColor(B8G8R8A8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+    dst->A = gl::floatToNormalized<uint8_t>(src->alpha);
+}
+
+void B8G8R8A8::average(B8G8R8A8 *dst, const B8G8R8A8 *src1, const B8G8R8A8 *src2)
+{
+    *(uint32_t *)dst = (((*(uint32_t *)src1 ^ *(uint32_t *)src2) & 0xFEFEFEFE) >> 1) +
+                       (*(uint32_t *)src1 & *(uint32_t *)src2);
+}
+
+void B8G8R8X8::readColor(gl::ColorUI *dst, const B8G8R8X8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1;
+}
+
+void B8G8R8X8::readColor(gl::ColorF *dst, const B8G8R8X8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void B8G8R8X8::writeColor(B8G8R8X8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+    dst->B = static_cast<uint8_t>(src->blue);
+    dst->X = 255;
+}
+
+void B8G8R8X8::writeColor(B8G8R8X8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+    dst->X = 255;
+}
+
+void B8G8R8X8::average(B8G8R8X8 *dst, const B8G8R8X8 *src1, const B8G8R8X8 *src2)
+{
+    *(uint32_t *)dst = (((*(uint32_t *)src1 ^ *(uint32_t *)src2) & 0xFEFEFEFE) >> 1) +
+                       (*(uint32_t *)src1 & *(uint32_t *)src2);
+    dst->X = 255;
+}
+
+void R8G8B8X8::readColor(gl::ColorUI *dst, const R8G8B8X8 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1;
+}
+
+void R8G8B8X8::readColor(gl::ColorF *dst, const R8G8B8X8 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R8G8B8X8::writeColor(R8G8B8X8 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint8_t>(src->red);
+    dst->G = static_cast<uint8_t>(src->green);
+    dst->B = static_cast<uint8_t>(src->blue);
+    dst->X = 255;
+}
+
+void R8G8B8X8::writeColor(R8G8B8X8 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint8_t>(src->red);
+    dst->G = gl::floatToNormalized<uint8_t>(src->green);
+    dst->B = gl::floatToNormalized<uint8_t>(src->blue);
+    dst->X = 255;
+}
+
+void R8G8B8X8::average(R8G8B8X8 *dst, const R8G8B8X8 *src1, const R8G8B8X8 *src2)
+{
+    *(uint32_t *)dst = (((*(uint32_t *)src1 ^ *(uint32_t *)src2) & 0xFEFEFEFE) >> 1) +
+                       (*(uint32_t *)src1 & *(uint32_t *)src2);
+    dst->X = 255;
+}
+
+void A1R5G5B5::readColor(gl::ColorF *dst, const A1R5G5B5 *src)
+{
+    dst->alpha = gl::normalizedToFloat<1>(gl::getShiftedData<1, 15>(src->ARGB));
+    dst->red   = gl::normalizedToFloat<5>(gl::getShiftedData<5, 10>(src->ARGB));
+    dst->green = gl::normalizedToFloat<5>(gl::getShiftedData<5, 5>(src->ARGB));
+    dst->blue  = gl::normalizedToFloat<5>(gl::getShiftedData<5, 0>(src->ARGB));
+}
+
+void A1R5G5B5::writeColor(A1R5G5B5 *dst, const gl::ColorF *src)
+{
+    dst->ARGB = gl::shiftData<1, 15>(gl::floatToNormalized<1, uint16_t>(src->alpha)) |
+                gl::shiftData<5, 10>(gl::floatToNormalized<5, uint16_t>(src->red)) |
+                gl::shiftData<5, 5>(gl::floatToNormalized<5, uint16_t>(src->green)) |
+                gl::shiftData<5, 0>(gl::floatToNormalized<5, uint16_t>(src->blue));
+}
+
+void A1R5G5B5::average(A1R5G5B5 *dst, const A1R5G5B5 *src1, const A1R5G5B5 *src2)
+{
+    dst->ARGB = gl::shiftData<1, 15>(gl::average(gl::getShiftedData<1, 15>(src1->ARGB),
+                                                 gl::getShiftedData<1, 15>(src2->ARGB))) |
+                gl::shiftData<5, 10>(gl::average(gl::getShiftedData<5, 10>(src1->ARGB),
+                                                 gl::getShiftedData<5, 10>(src2->ARGB))) |
+                gl::shiftData<5, 5>(gl::average(gl::getShiftedData<5, 5>(src1->ARGB),
+                                                gl::getShiftedData<5, 5>(src2->ARGB))) |
+                gl::shiftData<5, 0>(gl::average(gl::getShiftedData<5, 0>(src1->ARGB),
+                                                gl::getShiftedData<5, 0>(src2->ARGB)));
+}
+
+void R5G5B5A1::readColor(gl::ColorF *dst, const R5G5B5A1 *src)
+{
+    dst->red   = gl::normalizedToFloat<5>(gl::getShiftedData<5, 11>(src->RGBA));
+    dst->green = gl::normalizedToFloat<5>(gl::getShiftedData<5, 6>(src->RGBA));
+    dst->blue  = gl::normalizedToFloat<5>(gl::getShiftedData<5, 1>(src->RGBA));
+    dst->alpha = gl::normalizedToFloat<1>(gl::getShiftedData<1, 0>(src->RGBA));
+}
+
+void R5G5B5A1::writeColor(R5G5B5A1 *dst, const gl::ColorF *src)
+{
+    dst->RGBA = gl::shiftData<5, 11>(gl::floatToNormalized<5, uint16_t>(src->red)) |
+                gl::shiftData<5, 6>(gl::floatToNormalized<5, uint16_t>(src->green)) |
+                gl::shiftData<5, 1>(gl::floatToNormalized<5, uint16_t>(src->blue)) |
+                gl::shiftData<1, 0>(gl::floatToNormalized<1, uint16_t>(src->alpha));
+}
+
+void R5G5B5A1::average(R5G5B5A1 *dst, const R5G5B5A1 *src1, const R5G5B5A1 *src2)
+{
+    dst->RGBA = gl::shiftData<5, 11>(gl::average(gl::getShiftedData<5, 11>(src1->RGBA),
+                                                 gl::getShiftedData<5, 11>(src2->RGBA))) |
+                gl::shiftData<5, 6>(gl::average(gl::getShiftedData<5, 6>(src1->RGBA),
+                                                gl::getShiftedData<5, 6>(src2->RGBA))) |
+                gl::shiftData<5, 1>(gl::average(gl::getShiftedData<5, 1>(src1->RGBA),
+                                                gl::getShiftedData<5, 1>(src2->RGBA))) |
+                gl::shiftData<1, 0>(gl::average(gl::getShiftedData<1, 0>(src1->RGBA),
+                                                gl::getShiftedData<1, 0>(src2->RGBA)));
+}
+
+void R4G4B4A4::readColor(gl::ColorF *dst, const R4G4B4A4 *src)
+{
+    dst->red   = gl::normalizedToFloat<4>(gl::getShiftedData<4, 12>(src->RGBA));
+    dst->green = gl::normalizedToFloat<4>(gl::getShiftedData<4, 8>(src->RGBA));
+    dst->blue  = gl::normalizedToFloat<4>(gl::getShiftedData<4, 4>(src->RGBA));
+    dst->alpha = gl::normalizedToFloat<4>(gl::getShiftedData<4, 0>(src->RGBA));
+}
+
+void R4G4B4A4::writeColor(R4G4B4A4 *dst, const gl::ColorF *src)
+{
+    dst->RGBA = gl::shiftData<4, 12>(gl::floatToNormalized<4, uint16_t>(src->red)) |
+                gl::shiftData<4, 8>(gl::floatToNormalized<4, uint16_t>(src->green)) |
+                gl::shiftData<4, 4>(gl::floatToNormalized<4, uint16_t>(src->blue)) |
+                gl::shiftData<4, 0>(gl::floatToNormalized<4, uint16_t>(src->alpha));
+}
+
+void R4G4B4A4::average(R4G4B4A4 *dst, const R4G4B4A4 *src1, const R4G4B4A4 *src2)
+{
+    dst->RGBA = gl::shiftData<4, 12>(gl::average(gl::getShiftedData<4, 12>(src1->RGBA),
+                                                 gl::getShiftedData<4, 12>(src2->RGBA))) |
+                gl::shiftData<4, 8>(gl::average(gl::getShiftedData<4, 8>(src1->RGBA),
+                                                gl::getShiftedData<4, 8>(src2->RGBA))) |
+                gl::shiftData<4, 4>(gl::average(gl::getShiftedData<4, 4>(src1->RGBA),
+                                                gl::getShiftedData<4, 4>(src2->RGBA))) |
+                gl::shiftData<4, 0>(gl::average(gl::getShiftedData<4, 0>(src1->RGBA),
+                                                gl::getShiftedData<4, 0>(src2->RGBA)));
+}
+
+void A4R4G4B4::readColor(gl::ColorF *dst, const A4R4G4B4 *src)
+{
+    dst->alpha = gl::normalizedToFloat<4>(gl::getShiftedData<4, 12>(src->ARGB));
+    dst->red   = gl::normalizedToFloat<4>(gl::getShiftedData<4, 8>(src->ARGB));
+    dst->green = gl::normalizedToFloat<4>(gl::getShiftedData<4, 4>(src->ARGB));
+    dst->blue  = gl::normalizedToFloat<4>(gl::getShiftedData<4, 0>(src->ARGB));
+}
+
+void A4R4G4B4::writeColor(A4R4G4B4 *dst, const gl::ColorF *src)
+{
+    dst->ARGB = gl::shiftData<4, 12>(gl::floatToNormalized<4, uint16_t>(src->alpha)) |
+                gl::shiftData<4, 8>(gl::floatToNormalized<4, uint16_t>(src->red)) |
+                gl::shiftData<4, 4>(gl::floatToNormalized<4, uint16_t>(src->green)) |
+                gl::shiftData<4, 0>(gl::floatToNormalized<4, uint16_t>(src->blue));
+}
+
+void A4R4G4B4::average(A4R4G4B4 *dst, const A4R4G4B4 *src1, const A4R4G4B4 *src2)
+{
+    dst->ARGB = gl::shiftData<4, 12>(gl::average(gl::getShiftedData<4, 12>(src1->ARGB),
+                                                 gl::getShiftedData<4, 12>(src2->ARGB))) |
+                gl::shiftData<4, 8>(gl::average(gl::getShiftedData<4, 8>(src1->ARGB),
+                                                gl::getShiftedData<4, 8>(src2->ARGB))) |
+                gl::shiftData<4, 4>(gl::average(gl::getShiftedData<4, 4>(src1->ARGB),
+                                                gl::getShiftedData<4, 4>(src2->ARGB))) |
+                gl::shiftData<4, 0>(gl::average(gl::getShiftedData<4, 0>(src1->ARGB),
+                                                gl::getShiftedData<4, 0>(src2->ARGB)));
+}
+
+void R16::readColor(gl::ColorUI *dst, const R16 *src)
+{
+    dst->red   = src->R;
+    dst->green = 0;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R16::readColor(gl::ColorF *dst, const R16 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R16::writeColor(R16 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint16_t>(src->red);
+}
+
+void R16::writeColor(R16 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint16_t>(src->red);
+}
+
+void R16::average(R16 *dst, const R16 *src1, const R16 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+}
+
+void R16G16::readColor(gl::ColorUI *dst, const R16G16 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R16G16::readColor(gl::ColorF *dst, const R16G16 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R16G16::writeColor(R16G16 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint16_t>(src->red);
+    dst->G = static_cast<uint16_t>(src->green);
+}
+
+void R16G16::writeColor(R16G16 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint16_t>(src->red);
+    dst->G = gl::floatToNormalized<uint16_t>(src->green);
+}
+
+void R16G16::average(R16G16 *dst, const R16G16 *src1, const R16G16 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+}
+
+void R16G16B16::readColor(gl::ColorUI *dst, const R16G16B16 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1;
+}
+
+void R16G16B16::readColor(gl::ColorF *dst, const R16G16B16 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R16G16B16::writeColor(R16G16B16 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint16_t>(src->red);
+    dst->G = static_cast<uint16_t>(src->green);
+    dst->B = static_cast<uint16_t>(src->blue);
+}
+
+void R16G16B16::writeColor(R16G16B16 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint16_t>(src->red);
+    dst->G = gl::floatToNormalized<uint16_t>(src->green);
+    dst->B = gl::floatToNormalized<uint16_t>(src->blue);
+}
+
+void R16G16B16::average(R16G16B16 *dst, const R16G16B16 *src1, const R16G16B16 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void R16G16B16A16::readColor(gl::ColorUI *dst, const R16G16B16A16 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R16G16B16A16::readColor(gl::ColorF *dst, const R16G16B16A16 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void R16G16B16A16::writeColor(R16G16B16A16 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint16_t>(src->red);
+    dst->G = static_cast<uint16_t>(src->green);
+    dst->B = static_cast<uint16_t>(src->blue);
+    dst->A = static_cast<uint16_t>(src->alpha);
+}
+
+void R16G16B16A16::writeColor(R16G16B16A16 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint16_t>(src->red);
+    dst->G = gl::floatToNormalized<uint16_t>(src->green);
+    dst->B = gl::floatToNormalized<uint16_t>(src->blue);
+    dst->A = gl::floatToNormalized<uint16_t>(src->alpha);
+}
+
+void R16G16B16A16::average(R16G16B16A16 *dst, const R16G16B16A16 *src1, const R16G16B16A16 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R32::readColor(gl::ColorUI *dst, const R32 *src)
+{
+    dst->red   = src->R;
+    dst->green = 0;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R32::readColor(gl::ColorF *dst, const R32 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R32::writeColor(R32 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint32_t>(src->red);
+}
+
+void R32::writeColor(R32 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint32_t>(src->red);
+}
+
+void R32::average(R32 *dst, const R32 *src1, const R32 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+}
+
+void R32G32::readColor(gl::ColorUI *dst, const R32G32 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R32G32::readColor(gl::ColorF *dst, const R32G32 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R32G32::writeColor(R32G32 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint32_t>(src->red);
+    dst->G = static_cast<uint32_t>(src->green);
+}
+
+void R32G32::writeColor(R32G32 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint32_t>(src->red);
+    dst->G = gl::floatToNormalized<uint32_t>(src->green);
+}
+
+void R32G32::average(R32G32 *dst, const R32G32 *src1, const R32G32 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+}
+
+void R32G32B32::readColor(gl::ColorUI *dst, const R32G32B32 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1;
+}
+
+void R32G32B32::readColor(gl::ColorF *dst, const R32G32B32 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R32G32B32::writeColor(R32G32B32 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint32_t>(src->red);
+    dst->G = static_cast<uint32_t>(src->green);
+    dst->B = static_cast<uint32_t>(src->blue);
+}
+
+void R32G32B32::writeColor(R32G32B32 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint32_t>(src->red);
+    dst->G = gl::floatToNormalized<uint32_t>(src->green);
+    dst->B = gl::floatToNormalized<uint32_t>(src->blue);
+}
+
+void R32G32B32::average(R32G32B32 *dst, const R32G32B32 *src1, const R32G32B32 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void R32G32B32A32::readColor(gl::ColorUI *dst, const R32G32B32A32 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R32G32B32A32::readColor(gl::ColorF *dst, const R32G32B32A32 *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void R32G32B32A32::writeColor(R32G32B32A32 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint32_t>(src->red);
+    dst->G = static_cast<uint32_t>(src->green);
+    dst->B = static_cast<uint32_t>(src->blue);
+    dst->A = static_cast<uint32_t>(src->alpha);
+}
+
+void R32G32B32A32::writeColor(R32G32B32A32 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<uint32_t>(src->red);
+    dst->G = gl::floatToNormalized<uint32_t>(src->green);
+    dst->B = gl::floatToNormalized<uint32_t>(src->blue);
+    dst->A = gl::floatToNormalized<uint32_t>(src->alpha);
+}
+
+void R32G32B32A32::average(R32G32B32A32 *dst, const R32G32B32A32 *src1, const R32G32B32A32 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R8S::readColor(gl::ColorI *dst, const R8S *src)
+{
+    dst->red   = src->R;
+    dst->green = 0;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R8S::readColor(gl::ColorF *dst, const R8S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R8S::writeColor(R8S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int8_t>(src->red);
+}
+
+void R8S::writeColor(R8S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int8_t>(src->red);
+}
+
+void R8S::average(R8S *dst, const R8S *src1, const R8S *src2)
+{
+    dst->R = static_cast<int8_t>(gl::average(src1->R, src2->R));
+}
+
+void R8G8S::readColor(gl::ColorI *dst, const R8G8S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R8G8S::readColor(gl::ColorF *dst, const R8G8S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R8G8S::writeColor(R8G8S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int8_t>(src->red);
+    dst->G = static_cast<int8_t>(src->green);
+}
+
+void R8G8S::writeColor(R8G8S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int8_t>(src->red);
+    dst->G = gl::floatToNormalized<int8_t>(src->green);
+}
+
+void R8G8S::average(R8G8S *dst, const R8G8S *src1, const R8G8S *src2)
+{
+    dst->R = static_cast<int8_t>(gl::average(src1->R, src2->R));
+    dst->G = static_cast<int8_t>(gl::average(src1->G, src2->G));
+}
+
+void R8G8B8S::readColor(gl::ColorI *dst, const R8G8B8S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1;
+}
+
+void R8G8B8S::readColor(gl::ColorF *dst, const R8G8B8S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R8G8B8S::writeColor(R8G8B8S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int8_t>(src->red);
+    dst->G = static_cast<int8_t>(src->green);
+    dst->B = static_cast<int8_t>(src->blue);
+}
+
+void R8G8B8S::writeColor(R8G8B8S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int8_t>(src->red);
+    dst->G = gl::floatToNormalized<int8_t>(src->green);
+    dst->B = gl::floatToNormalized<int8_t>(src->blue);
+}
+
+void R8G8B8S::average(R8G8B8S *dst, const R8G8B8S *src1, const R8G8B8S *src2)
+{
+    dst->R = static_cast<int8_t>(gl::average(src1->R, src2->R));
+    dst->G = static_cast<int8_t>(gl::average(src1->G, src2->G));
+    dst->B = static_cast<int8_t>(gl::average(src1->B, src2->B));
+}
+
+void R8G8B8A8S::readColor(gl::ColorI *dst, const R8G8B8A8S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R8G8B8A8S::readColor(gl::ColorF *dst, const R8G8B8A8S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void R8G8B8A8S::writeColor(R8G8B8A8S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int8_t>(src->red);
+    dst->G = static_cast<int8_t>(src->green);
+    dst->B = static_cast<int8_t>(src->blue);
+    dst->A = static_cast<int8_t>(src->alpha);
+}
+
+void R8G8B8A8S::writeColor(R8G8B8A8S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int8_t>(src->red);
+    dst->G = gl::floatToNormalized<int8_t>(src->green);
+    dst->B = gl::floatToNormalized<int8_t>(src->blue);
+    dst->A = gl::floatToNormalized<int8_t>(src->alpha);
+}
+
+void R8G8B8A8S::average(R8G8B8A8S *dst, const R8G8B8A8S *src1, const R8G8B8A8S *src2)
+{
+    dst->R = static_cast<int8_t>(gl::average(src1->R, src2->R));
+    dst->G = static_cast<int8_t>(gl::average(src1->G, src2->G));
+    dst->B = static_cast<int8_t>(gl::average(src1->B, src2->B));
+    dst->A = static_cast<int8_t>(gl::average(src1->A, src2->A));
+}
+
+void R16S::readColor(gl::ColorI *dst, const R16S *src)
+{
+    dst->red   = src->R;
+    dst->green = 0;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R16S::readColor(gl::ColorF *dst, const R16S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R16S::writeColor(R16S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int16_t>(src->red);
+}
+
+void R16S::writeColor(R16S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int16_t>(src->red);
+}
+
+void R16S::average(R16S *dst, const R16S *src1, const R16S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+}
+
+void R16G16S::readColor(gl::ColorI *dst, const R16G16S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R16G16S::readColor(gl::ColorF *dst, const R16G16S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R16G16S::writeColor(R16G16S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int16_t>(src->red);
+    dst->G = static_cast<int16_t>(src->green);
+}
+
+void R16G16S::writeColor(R16G16S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int16_t>(src->red);
+    dst->G = gl::floatToNormalized<int16_t>(src->green);
+}
+
+void R16G16S::average(R16G16S *dst, const R16G16S *src1, const R16G16S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+}
+
+void R16G16B16S::readColor(gl::ColorI *dst, const R16G16B16S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1;
+}
+
+void R16G16B16S::readColor(gl::ColorF *dst, const R16G16B16S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R16G16B16S::writeColor(R16G16B16S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int16_t>(src->red);
+    dst->G = static_cast<int16_t>(src->green);
+    dst->B = static_cast<int16_t>(src->blue);
+}
+
+void R16G16B16S::writeColor(R16G16B16S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int16_t>(src->red);
+    dst->G = gl::floatToNormalized<int16_t>(src->green);
+    dst->B = gl::floatToNormalized<int16_t>(src->blue);
+}
+
+void R16G16B16S::average(R16G16B16S *dst, const R16G16B16S *src1, const R16G16B16S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void R16G16B16A16S::readColor(gl::ColorI *dst, const R16G16B16A16S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R16G16B16A16S::readColor(gl::ColorF *dst, const R16G16B16A16S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void R16G16B16A16S::writeColor(R16G16B16A16S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int16_t>(src->red);
+    dst->G = static_cast<int16_t>(src->green);
+    dst->B = static_cast<int16_t>(src->blue);
+    dst->A = static_cast<int16_t>(src->alpha);
+}
+
+void R16G16B16A16S::writeColor(R16G16B16A16S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int16_t>(src->red);
+    dst->G = gl::floatToNormalized<int16_t>(src->green);
+    dst->B = gl::floatToNormalized<int16_t>(src->blue);
+    dst->A = gl::floatToNormalized<int16_t>(src->alpha);
+}
+
+void R16G16B16A16S::average(R16G16B16A16S *dst,
+                            const R16G16B16A16S *src1,
+                            const R16G16B16A16S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R32S::readColor(gl::ColorI *dst, const R32S *src)
+{
+    dst->red   = src->R;
+    dst->green = 0;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R32S::readColor(gl::ColorF *dst, const R32S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R32S::writeColor(R32S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int32_t>(src->red);
+}
+
+void R32S::writeColor(R32S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int32_t>(src->red);
+}
+
+void R32S::average(R32S *dst, const R32S *src1, const R32S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+}
+
+void R32G32S::readColor(gl::ColorI *dst, const R32G32S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = 0;
+    dst->alpha = 1;
+}
+
+void R32G32S::readColor(gl::ColorF *dst, const R32G32S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R32G32S::writeColor(R32G32S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int32_t>(src->red);
+    dst->G = static_cast<int32_t>(src->green);
+}
+
+void R32G32S::writeColor(R32G32S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int32_t>(src->red);
+    dst->G = gl::floatToNormalized<int32_t>(src->green);
+}
+
+void R32G32S::average(R32G32S *dst, const R32G32S *src1, const R32G32S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+}
+
+void R32G32B32S::readColor(gl::ColorI *dst, const R32G32B32S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1;
+}
+
+void R32G32B32S::readColor(gl::ColorF *dst, const R32G32B32S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R32G32B32S::writeColor(R32G32B32S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int32_t>(src->red);
+    dst->G = static_cast<int32_t>(src->green);
+    dst->B = static_cast<int32_t>(src->blue);
+}
+
+void R32G32B32S::writeColor(R32G32B32S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int32_t>(src->red);
+    dst->G = gl::floatToNormalized<int32_t>(src->green);
+    dst->B = gl::floatToNormalized<int32_t>(src->blue);
+}
+
+void R32G32B32S::average(R32G32B32S *dst, const R32G32B32S *src1, const R32G32B32S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void R32G32B32A32S::readColor(gl::ColorI *dst, const R32G32B32A32S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R32G32B32A32S::readColor(gl::ColorF *dst, const R32G32B32A32S *src)
+{
+    dst->red   = gl::normalizedToFloat(src->R);
+    dst->green = gl::normalizedToFloat(src->G);
+    dst->blue  = gl::normalizedToFloat(src->B);
+    dst->alpha = gl::normalizedToFloat(src->A);
+}
+
+void R32G32B32A32S::writeColor(R32G32B32A32S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int32_t>(src->red);
+    dst->G = static_cast<int32_t>(src->green);
+    dst->B = static_cast<int32_t>(src->blue);
+    dst->A = static_cast<int32_t>(src->alpha);
+}
+
+void R32G32B32A32S::writeColor(R32G32B32A32S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<int32_t>(src->red);
+    dst->G = gl::floatToNormalized<int32_t>(src->green);
+    dst->B = gl::floatToNormalized<int32_t>(src->blue);
+    dst->A = gl::floatToNormalized<int32_t>(src->alpha);
+}
+
+void R32G32B32A32S::average(R32G32B32A32S *dst,
+                            const R32G32B32A32S *src1,
+                            const R32G32B32A32S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void A16B16G16R16F::readColor(gl::ColorF *dst, const A16B16G16R16F *src)
+{
+    dst->red   = gl::float16ToFloat32(src->R);
+    dst->green = gl::float16ToFloat32(src->G);
+    dst->blue  = gl::float16ToFloat32(src->B);
+    dst->alpha = gl::float16ToFloat32(src->A);
+}
+
+void A16B16G16R16F::writeColor(A16B16G16R16F *dst, const gl::ColorF *src)
+{
+    dst->R = gl::float32ToFloat16(src->red);
+    dst->G = gl::float32ToFloat16(src->green);
+    dst->B = gl::float32ToFloat16(src->blue);
+    dst->A = gl::float32ToFloat16(src->alpha);
+}
+
+void A16B16G16R16F::average(A16B16G16R16F *dst,
+                            const A16B16G16R16F *src1,
+                            const A16B16G16R16F *src2)
+{
+    dst->R = gl::averageHalfFloat(src1->R, src2->R);
+    dst->G = gl::averageHalfFloat(src1->G, src2->G);
+    dst->B = gl::averageHalfFloat(src1->B, src2->B);
+    dst->A = gl::averageHalfFloat(src1->A, src2->A);
+}
+
+void R16G16B16A16F::readColor(gl::ColorF *dst, const R16G16B16A16F *src)
+{
+    dst->red   = gl::float16ToFloat32(src->R);
+    dst->green = gl::float16ToFloat32(src->G);
+    dst->blue  = gl::float16ToFloat32(src->B);
+    dst->alpha = gl::float16ToFloat32(src->A);
+}
+
+void R16G16B16A16F::writeColor(R16G16B16A16F *dst, const gl::ColorF *src)
+{
+    dst->R = gl::float32ToFloat16(src->red);
+    dst->G = gl::float32ToFloat16(src->green);
+    dst->B = gl::float32ToFloat16(src->blue);
+    dst->A = gl::float32ToFloat16(src->alpha);
+}
+
+void R16G16B16A16F::average(R16G16B16A16F *dst,
+                            const R16G16B16A16F *src1,
+                            const R16G16B16A16F *src2)
+{
+    dst->R = gl::averageHalfFloat(src1->R, src2->R);
+    dst->G = gl::averageHalfFloat(src1->G, src2->G);
+    dst->B = gl::averageHalfFloat(src1->B, src2->B);
+    dst->A = gl::averageHalfFloat(src1->A, src2->A);
+}
+
+void R16F::readColor(gl::ColorF *dst, const R16F *src)
+{
+    dst->red   = gl::float16ToFloat32(src->R);
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R16F::writeColor(R16F *dst, const gl::ColorF *src)
+{
+    dst->R = gl::float32ToFloat16(src->red);
+}
+
+void R16F::average(R16F *dst, const R16F *src1, const R16F *src2)
+{
+    dst->R = gl::averageHalfFloat(src1->R, src2->R);
+}
+
+void A16F::readColor(gl::ColorF *dst, const A16F *src)
+{
+    dst->red   = 0.0f;
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = gl::float16ToFloat32(src->A);
+}
+
+void A16F::writeColor(A16F *dst, const gl::ColorF *src)
+{
+    dst->A = gl::float32ToFloat16(src->alpha);
+}
+
+void A16F::average(A16F *dst, const A16F *src1, const A16F *src2)
+{
+    dst->A = gl::averageHalfFloat(src1->A, src2->A);
+}
+
+void L16F::readColor(gl::ColorF *dst, const L16F *src)
+{
+    float lum  = gl::float16ToFloat32(src->L);
+    dst->red   = lum;
+    dst->green = lum;
+    dst->blue  = lum;
+    dst->alpha = 1.0f;
+}
+
+void L16F::writeColor(L16F *dst, const gl::ColorF *src)
+{
+    dst->L = gl::float32ToFloat16(src->red);
+}
+
+void L16F::average(L16F *dst, const L16F *src1, const L16F *src2)
+{
+    dst->L = gl::averageHalfFloat(src1->L, src2->L);
+}
+
+void L16A16F::readColor(gl::ColorF *dst, const L16A16F *src)
+{
+    float lum  = gl::float16ToFloat32(src->L);
+    dst->red   = lum;
+    dst->green = lum;
+    dst->blue  = lum;
+    dst->alpha = gl::float16ToFloat32(src->A);
+}
+
+void L16A16F::writeColor(L16A16F *dst, const gl::ColorF *src)
+{
+    dst->L = gl::float32ToFloat16(src->red);
+    dst->A = gl::float32ToFloat16(src->alpha);
+}
+
+void L16A16F::average(L16A16F *dst, const L16A16F *src1, const L16A16F *src2)
+{
+    dst->L = gl::averageHalfFloat(src1->L, src2->L);
+    dst->A = gl::averageHalfFloat(src1->A, src2->A);
+}
+
+void R16G16F::readColor(gl::ColorF *dst, const R16G16F *src)
+{
+    dst->red   = gl::float16ToFloat32(src->R);
+    dst->green = gl::float16ToFloat32(src->G);
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R16G16F::writeColor(R16G16F *dst, const gl::ColorF *src)
+{
+    dst->R = gl::float32ToFloat16(src->red);
+    dst->G = gl::float32ToFloat16(src->green);
+}
+
+void R16G16F::average(R16G16F *dst, const R16G16F *src1, const R16G16F *src2)
+{
+    dst->R = gl::averageHalfFloat(src1->R, src2->R);
+    dst->G = gl::averageHalfFloat(src1->G, src2->G);
+}
+
+void R16G16B16F::readColor(gl::ColorF *dst, const R16G16B16F *src)
+{
+    dst->red   = gl::float16ToFloat32(src->R);
+    dst->green = gl::float16ToFloat32(src->G);
+    dst->blue  = gl::float16ToFloat32(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R16G16B16F::writeColor(R16G16B16F *dst, const gl::ColorF *src)
+{
+    dst->R = gl::float32ToFloat16(src->red);
+    dst->G = gl::float32ToFloat16(src->green);
+    dst->B = gl::float32ToFloat16(src->blue);
+}
+
+void R16G16B16F::average(R16G16B16F *dst, const R16G16B16F *src1, const R16G16B16F *src2)
+{
+    dst->R = gl::averageHalfFloat(src1->R, src2->R);
+    dst->G = gl::averageHalfFloat(src1->G, src2->G);
+    dst->B = gl::averageHalfFloat(src1->B, src2->B);
+}
+
+void A32B32G32R32F::readColor(gl::ColorF *dst, const A32B32G32R32F *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void A32B32G32R32F::writeColor(A32B32G32R32F *dst, const gl::ColorF *src)
+{
+    dst->R = src->red;
+    dst->G = src->green;
+    dst->B = src->blue;
+    dst->A = src->alpha;
+}
+
+void A32B32G32R32F::average(A32B32G32R32F *dst,
+                            const A32B32G32R32F *src1,
+                            const A32B32G32R32F *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R32G32B32A32F::readColor(gl::ColorF *dst, const R32G32B32A32F *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R32G32B32A32F::writeColor(R32G32B32A32F *dst, const gl::ColorF *src)
+{
+    dst->R = src->red;
+    dst->G = src->green;
+    dst->B = src->blue;
+    dst->A = src->alpha;
+}
+
+void R32G32B32A32F::average(R32G32B32A32F *dst,
+                            const R32G32B32A32F *src1,
+                            const R32G32B32A32F *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R32F::readColor(gl::ColorF *dst, const R32F *src)
+{
+    dst->red   = src->R;
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R32F::writeColor(R32F *dst, const gl::ColorF *src)
+{
+    dst->R = src->red;
+}
+
+void R32F::average(R32F *dst, const R32F *src1, const R32F *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+}
+
+void A32F::readColor(gl::ColorF *dst, const A32F *src)
+{
+    dst->red   = 0.0f;
+    dst->green = 0.0f;
+    dst->blue  = 0.0f;
+    dst->alpha = src->A;
+}
+
+void A32F::writeColor(A32F *dst, const gl::ColorF *src)
+{
+    dst->A = src->alpha;
+}
+
+void A32F::average(A32F *dst, const A32F *src1, const A32F *src2)
+{
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void L32F::readColor(gl::ColorF *dst, const L32F *src)
+{
+    dst->red   = src->L;
+    dst->green = src->L;
+    dst->blue  = src->L;
+    dst->alpha = 1.0f;
+}
+
+void L32F::writeColor(L32F *dst, const gl::ColorF *src)
+{
+    dst->L = src->red;
+}
+
+void L32F::average(L32F *dst, const L32F *src1, const L32F *src2)
+{
+    dst->L = gl::average(src1->L, src2->L);
+}
+
+void L32A32F::readColor(gl::ColorF *dst, const L32A32F *src)
+{
+    dst->red   = src->L;
+    dst->green = src->L;
+    dst->blue  = src->L;
+    dst->alpha = src->A;
+}
+
+void L32A32F::writeColor(L32A32F *dst, const gl::ColorF *src)
+{
+    dst->L = src->red;
+    dst->A = src->alpha;
+}
+
+void L32A32F::average(L32A32F *dst, const L32A32F *src1, const L32A32F *src2)
+{
+    dst->L = gl::average(src1->L, src2->L);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R32G32F::readColor(gl::ColorF *dst, const R32G32F *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = 0.0f;
+    dst->alpha = 1.0f;
+}
+
+void R32G32F::writeColor(R32G32F *dst, const gl::ColorF *src)
+{
+    dst->R = src->red;
+    dst->G = src->green;
+}
+
+void R32G32F::average(R32G32F *dst, const R32G32F *src1, const R32G32F *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+}
+
+void R32G32B32F::readColor(gl::ColorF *dst, const R32G32B32F *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 1.0f;
+}
+
+void R32G32B32F::writeColor(R32G32B32F *dst, const gl::ColorF *src)
+{
+    dst->R = src->red;
+    dst->G = src->green;
+    dst->B = src->blue;
+}
+
+void R32G32B32F::average(R32G32B32F *dst, const R32G32B32F *src1, const R32G32B32F *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void R10G10B10A2::readColor(gl::ColorUI *dst, const R10G10B10A2 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R10G10B10A2::readColor(gl::ColorF *dst, const R10G10B10A2 *src)
+{
+    dst->red   = gl::normalizedToFloat<10>(src->R);
+    dst->green = gl::normalizedToFloat<10>(src->G);
+    dst->blue  = gl::normalizedToFloat<10>(src->B);
+    dst->alpha = gl::normalizedToFloat<2>(src->A);
+}
+
+void R10G10B10A2::writeColor(R10G10B10A2 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint32_t>(src->red);
+    dst->G = static_cast<uint32_t>(src->green);
+    dst->B = static_cast<uint32_t>(src->blue);
+    dst->A = static_cast<uint32_t>(src->alpha);
+}
+
+void R10G10B10A2::writeColor(R10G10B10A2 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<10, uint32_t>(src->red);
+    dst->G = gl::floatToNormalized<10, uint32_t>(src->green);
+    dst->B = gl::floatToNormalized<10, uint32_t>(src->blue);
+    dst->A = gl::floatToNormalized<2, uint32_t>(src->alpha);
+}
+
+void R10G10B10A2::average(R10G10B10A2 *dst, const R10G10B10A2 *src1, const R10G10B10A2 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R10G10B10A2S::readColor(gl::ColorI *dst, const R10G10B10A2S *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void R10G10B10A2S::readColor(gl::ColorF *dst, const R10G10B10A2S *src)
+{
+    dst->red   = gl::normalizedToFloat<10>(src->R);
+    dst->green = gl::normalizedToFloat<10>(src->G);
+    dst->blue  = gl::normalizedToFloat<10>(src->B);
+    dst->alpha = gl::normalizedToFloat<2>(src->A);
+}
+
+void R10G10B10A2S::writeColor(R10G10B10A2S *dst, const gl::ColorI *src)
+{
+    dst->R = static_cast<int32_t>(src->red);
+    dst->G = static_cast<int32_t>(src->green);
+    dst->B = static_cast<int32_t>(src->blue);
+    dst->A = static_cast<int32_t>(src->alpha);
+}
+
+void R10G10B10A2S::writeColor(R10G10B10A2S *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<10, int32_t>(src->red);
+    dst->G = gl::floatToNormalized<10, int32_t>(src->green);
+    dst->B = gl::floatToNormalized<10, int32_t>(src->blue);
+    dst->A = gl::floatToNormalized<2, int32_t>(src->alpha);
+}
+
+void R10G10B10A2S::average(R10G10B10A2S *dst, const R10G10B10A2S *src1, const R10G10B10A2S *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R10G10B10X2::readColor(gl::ColorUI *dst, const R10G10B10X2 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = 0x3;
+}
+
+void R10G10B10X2::readColor(gl::ColorF *dst, const R10G10B10X2 *src)
+{
+    dst->red   = gl::normalizedToFloat<10>(src->R);
+    dst->green = gl::normalizedToFloat<10>(src->G);
+    dst->blue  = gl::normalizedToFloat<10>(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R10G10B10X2::writeColor(R10G10B10X2 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint32_t>(src->red);
+    dst->G = static_cast<uint32_t>(src->green);
+    dst->B = static_cast<uint32_t>(src->blue);
+}
+
+void R10G10B10X2::writeColor(R10G10B10X2 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<10, uint32_t>(src->red);
+    dst->G = gl::floatToNormalized<10, uint32_t>(src->green);
+    dst->B = gl::floatToNormalized<10, uint32_t>(src->blue);
+}
+
+void R10G10B10X2::average(R10G10B10X2 *dst, const R10G10B10X2 *src1, const R10G10B10X2 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+}
+
+void B10G10R10A2::readColor(gl::ColorUI *dst, const B10G10R10A2 *src)
+{
+    dst->red   = src->R;
+    dst->green = src->G;
+    dst->blue  = src->B;
+    dst->alpha = src->A;
+}
+
+void B10G10R10A2::readColor(gl::ColorF *dst, const B10G10R10A2 *src)
+{
+    dst->red   = gl::normalizedToFloat<10>(src->R);
+    dst->green = gl::normalizedToFloat<10>(src->G);
+    dst->blue  = gl::normalizedToFloat<10>(src->B);
+    dst->alpha = gl::normalizedToFloat<2>(src->A);
+}
+
+void B10G10R10A2::writeColor(B10G10R10A2 *dst, const gl::ColorUI *src)
+{
+    dst->R = static_cast<uint32_t>(src->red);
+    dst->G = static_cast<uint32_t>(src->green);
+    dst->B = static_cast<uint32_t>(src->blue);
+    dst->A = static_cast<uint32_t>(src->alpha);
+}
+
+void B10G10R10A2::writeColor(B10G10R10A2 *dst, const gl::ColorF *src)
+{
+    dst->R = gl::floatToNormalized<10, uint32_t>(src->red);
+    dst->G = gl::floatToNormalized<10, uint32_t>(src->green);
+    dst->B = gl::floatToNormalized<10, uint32_t>(src->blue);
+    dst->A = gl::floatToNormalized<2, uint32_t>(src->alpha);
+}
+
+void B10G10R10A2::average(B10G10R10A2 *dst, const B10G10R10A2 *src1, const B10G10R10A2 *src2)
+{
+    dst->R = gl::average(src1->R, src2->R);
+    dst->G = gl::average(src1->G, src2->G);
+    dst->B = gl::average(src1->B, src2->B);
+    dst->A = gl::average(src1->A, src2->A);
+}
+
+void R9G9B9E5::readColor(gl::ColorF *dst, const R9G9B9E5 *src)
+{
+    gl::convert999E5toRGBFloats(gl::bitCast<uint32_t>(*src), &dst->red, &dst->green, &dst->blue);
+    dst->alpha = 1.0f;
+}
+
+void R9G9B9E5::writeColor(R9G9B9E5 *dst, const gl::ColorF *src)
+{
+    *reinterpret_cast<uint32_t *>(dst) =
+        gl::convertRGBFloatsTo999E5(src->red, src->green, src->blue);
+}
+
+void R9G9B9E5::average(R9G9B9E5 *dst, const R9G9B9E5 *src1, const R9G9B9E5 *src2)
+{
+    float r1, g1, b1;
+    gl::convert999E5toRGBFloats(*reinterpret_cast<const uint32_t *>(src1), &r1, &g1, &b1);
+
+    float r2, g2, b2;
+    gl::convert999E5toRGBFloats(*reinterpret_cast<const uint32_t *>(src2), &r2, &g2, &b2);
+
+    *reinterpret_cast<uint32_t *>(dst) =
+        gl::convertRGBFloatsTo999E5(gl::average(r1, r2), gl::average(g1, g2), gl::average(b1, b2));
+}
+
+void R11G11B10F::readColor(gl::ColorF *dst, const R11G11B10F *src)
+{
+    dst->red   = gl::float11ToFloat32(src->R);
+    dst->green = gl::float11ToFloat32(src->G);
+    dst->blue  = gl::float10ToFloat32(src->B);
+    dst->alpha = 1.0f;
+}
+
+void R11G11B10F::writeColor(R11G11B10F *dst, const gl::ColorF *src)
+{
+    dst->R = gl::float32ToFloat11(src->red);
+    dst->G = gl::float32ToFloat11(src->green);
+    dst->B = gl::float32ToFloat10(src->blue);
+}
+
+void R11G11B10F::average(R11G11B10F *dst, const R11G11B10F *src1, const R11G11B10F *src2)
+{
+    dst->R = gl::averageFloat11(src1->R, src2->R);
+    dst->G = gl::averageFloat11(src1->G, src2->G);
+    dst->B = gl::averageFloat10(src1->B, src2->B);
+}
+
+void D24S8::ReadDepthStencil(DepthStencil *dst, const D24S8 *src)
+{
+    dst->depth   = gl::normalizedToFloat<24>(src->D);
+    dst->stencil = src->S;
+}
+
+void D24S8::WriteDepthStencil(D24S8 *dst, const DepthStencil *src)
+{
+    dst->D = gl::floatToNormalized<24, uint32_t>(static_cast<float>(src->depth));
+    dst->S = src->stencil & 0xFF;
+}
+
+void S8::ReadDepthStencil(DepthStencil *dst, const S8 *src)
+{
+    dst->depth   = 0;
+    dst->stencil = src->S;
+}
+
+void S8::WriteDepthStencil(S8 *dst, const DepthStencil *src)
+{
+    dst->S = src->stencil & 0xFF;
+}
+
+void D16::ReadDepthStencil(DepthStencil *dst, const D16 *src)
+{
+    dst->depth   = gl::normalizedToFloat(src->D);
+    dst->stencil = 0;
+}
+
+void D16::WriteDepthStencil(D16 *dst, const DepthStencil *src)
+{
+    dst->D = gl::floatToNormalized<uint16_t>(static_cast<float>(src->depth));
+}
+
+void D24X8::ReadDepthStencil(DepthStencil *dst, const D24X8 *src)
+{
+    dst->depth = gl::normalizedToFloat<24>(src->D & 0x00ffffff);
+}
+
+void D24X8::WriteDepthStencil(D24X8 *dst, const DepthStencil *src)
+{
+    dst->D = gl::floatToNormalized<24, uint32_t>(static_cast<float>(src->depth));
+}
+
+void D32F::ReadDepthStencil(DepthStencil *dst, const D32F *src)
+{
+    dst->depth = src->D;
+}
+
+void D32F::WriteDepthStencil(D32F *dst, const DepthStencil *src)
+{
+    dst->D = static_cast<float>(src->depth);
+}
+
+void D32::ReadDepthStencil(DepthStencil *dst, const D32 *src)
+{
+    dst->depth   = gl::normalizedToFloat(src->D);
+    dst->stencil = 0;
+}
+
+void D32::WriteDepthStencil(D32 *dst, const DepthStencil *src)
+{
+    dst->D = gl::floatToNormalized<uint32_t>(static_cast<float>(src->depth));
+}
+
+void D32FS8X24::ReadDepthStencil(DepthStencil *dst, const D32FS8X24 *src)
+{
+    dst->depth   = src->D;
+    dst->stencil = src->S;
+}
+
+void D32FS8X24::WriteDepthStencil(D32FS8X24 *dst, const DepthStencil *src)
+{
+    dst->D = static_cast<float>(src->depth);
+    dst->S = src->stencil & 0xFF;
+}
+}  // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/imageformats.h b/gfx/angle/checkout/src/image_util/imageformats.h
new file mode 100644
index 0000000000..58fe5fe1a2
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/imageformats.h
@@ -0,0 +1,816 @@
+//
+// Copyright 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// imageformats.h: Defines image format types with functions for mip generation
+// and copying.
+
+#ifndef IMAGEUTIL_IMAGEFORMATS_H_
+#define IMAGEUTIL_IMAGEFORMATS_H_
+
+#include "common/Color.h"
+
+#include <cstdint>
+
+namespace angle
+{
+
+// Several structures share functionality for reading, writing or mipmapping but the layout
+// must match the texture format which the structure represents. If collapsing or typedefing
+// structs in this header, make sure the functionality and memory layout is exactly the same.
+
+struct L8
+{
+    uint8_t L;
+
+    static void readColor(gl::ColorF *dst, const L8 *src);
+    static void writeColor(L8 *dst, const gl::ColorF *src);
+    static void average(L8 *dst, const L8 *src1, const L8 *src2);
+};
+
+struct R8
+{
+    uint8_t R;
+
+    static void readColor(gl::ColorF *dst, const R8 *src);
+    static void readColor(gl::ColorUI *dst, const R8 *src);
+    static void writeColor(R8 *dst, const gl::ColorF *src);
+    static void writeColor(R8 *dst, const gl::ColorUI *src);
+    static void average(R8 *dst, const R8 *src1, const R8 *src2);
+};
+
+struct A8
+{
+    uint8_t A;
+
+    static void readColor(gl::ColorF *dst, const A8 *src);
+    static void writeColor(A8 *dst, const gl::ColorF *src);
+    static void average(A8 *dst, const A8 *src1, const A8 *src2);
+};
+
+struct L8A8
+{
+    uint8_t L;
+    uint8_t A;
+
+    static void readColor(gl::ColorF *dst, const L8A8 *src);
+    static void writeColor(L8A8 *dst, const gl::ColorF *src);
+    static void average(L8A8 *dst, const L8A8 *src1, const L8A8 *src2);
+};
+
+struct A8L8
+{
+    uint8_t A;
+    uint8_t L;
+
+    static void readColor(gl::ColorF *dst, const A8L8 *src);
+    static void writeColor(A8L8 *dst, const gl::ColorF *src);
+    static void average(A8L8 *dst, const A8L8 *src1, const A8L8 *src2);
+};
+
+struct R8G8
+{
+    uint8_t R;
+    uint8_t G;
+
+    static void readColor(gl::ColorF *dst, const R8G8 *src);
+    static void readColor(gl::ColorUI *dst, const R8G8 *src);
+    static void writeColor(R8G8 *dst, const gl::ColorF *src);
+    static void writeColor(R8G8 *dst, const gl::ColorUI *src);
+    static void average(R8G8 *dst, const R8G8 *src1, const R8G8 *src2);
+};
+
+struct R8G8B8
+{
+    uint8_t R;
+    uint8_t G;
+    uint8_t B;
+
+    static void readColor(gl::ColorF *dst, const R8G8B8 *src);
+    static void readColor(gl::ColorUI *dst, const R8G8B8 *src);
+    static void writeColor(R8G8B8 *dst, const gl::ColorF *src);
+    static void writeColor(R8G8B8 *dst, const gl::ColorUI *src);
+    static void average(R8G8B8 *dst, const R8G8B8 *src1, const R8G8B8 *src2);
+};
+
+struct B8G8R8
+{
+    uint8_t B;
+    uint8_t G;
+    uint8_t R;
+
+    static void readColor(gl::ColorF *dst, const B8G8R8 *src);
+    static void readColor(gl::ColorUI *dst, const B8G8R8 *src);
+    static void writeColor(B8G8R8 *dst, const gl::ColorF *src);
+    static void writeColor(B8G8R8 *dst, const gl::ColorUI *src);
+    static void average(B8G8R8 *dst, const B8G8R8 *src1, const B8G8R8 *src2);
+};
+
+struct R5G6B5
+{
+    // OpenGL ES 2.0.25 spec Section 3.6.2: "Components are packed with the first component in the
+    // most significant bits of the bitfield, and successive component occupying progressively less
+    // significant locations"
+    uint16_t RGB;
+
+    static void readColor(gl::ColorF *dst, const R5G6B5 *src);
+    static void writeColor(R5G6B5 *dst, const gl::ColorF *src);
+    static void average(R5G6B5 *dst, const R5G6B5 *src1, const R5G6B5 *src2);
+};
+
+struct B5G6R5
+{
+    uint16_t BGR;
+
+    static void readColor(gl::ColorF *dst, const B5G6R5 *src);
+    static void writeColor(B5G6R5 *dst, const gl::ColorF *src);
+    static void average(B5G6R5 *dst, const B5G6R5 *src1, const B5G6R5 *src2);
+};
+
+struct A8R8G8B8
+{
+    uint8_t A;
+    uint8_t R;
+    uint8_t G;
+    uint8_t B;
+
+    static void readColor(gl::ColorF *dst, const A8R8G8B8 *src);
+    static void readColor(gl::ColorUI *dst, const A8R8G8B8 *src);
+    static void writeColor(A8R8G8B8 *dst, const gl::ColorF *src);
+    static void writeColor(A8R8G8B8 *dst, const gl::ColorUI *src);
+    static void average(A8R8G8B8 *dst, const A8R8G8B8 *src1, const A8R8G8B8 *src2);
+};
+
+struct R8G8B8A8
+{
+    uint8_t R;
+    uint8_t G;
+    uint8_t B;
+    uint8_t A;
+
+    static void readColor(gl::ColorF *dst, const R8G8B8A8 *src);
+    static void readColor(gl::ColorUI *dst, const R8G8B8A8 *src);
+    static void writeColor(R8G8B8A8 *dst, const gl::ColorF *src);
+    static void writeColor(R8G8B8A8 *dst, const gl::ColorUI *src);
+    static void average(R8G8B8A8 *dst, const R8G8B8A8 *src1, const R8G8B8A8 *src2);
+};
+
+struct R8G8B8A8SRGB
+{
+    uint8_t R;
+    uint8_t G;
+    uint8_t B;
+    uint8_t A;
+
+    static void readColor(gl::ColorF *dst, const R8G8B8A8SRGB *src);
+    static void writeColor(R8G8B8A8SRGB *dst, const gl::ColorF *src);
+    static void average(R8G8B8A8SRGB *dst, const R8G8B8A8SRGB *src1, const R8G8B8A8SRGB *src2);
+};
+
+struct B8G8R8A8
+{
+    uint8_t B;
+    uint8_t G;
+    uint8_t R;
+    uint8_t A;
+
+    static void readColor(gl::ColorF *dst, const B8G8R8A8 *src);
+    static void readColor(gl::ColorUI *dst, const B8G8R8A8 *src);
+    static void writeColor(B8G8R8A8 *dst, const gl::ColorF *src);
+    static void writeColor(B8G8R8A8 *dst, const gl::ColorUI *src);
+    static void average(B8G8R8A8 *dst, const B8G8R8A8 *src1, const B8G8R8A8 *src2);
+};
+
+struct B8G8R8X8
+{
+    uint8_t B;
+    uint8_t G;
+    uint8_t R;
+    uint8_t X;
+
+    static void readColor(gl::ColorF *dst, const B8G8R8X8 *src);
+    static void readColor(gl::ColorUI *dst, const B8G8R8X8 *src);
+    static void writeColor(B8G8R8X8 *dst, const gl::ColorF *src);
+    static void writeColor(B8G8R8X8 *dst, const gl::ColorUI *src);
+    static void average(B8G8R8X8 *dst, const B8G8R8X8 *src1, const B8G8R8X8 *src2);
+};
+
+struct R8G8B8X8
+{
+    uint8_t R;
+    uint8_t G;
+    uint8_t B;
+    uint8_t X;
+
+    static void readColor(gl::ColorF *dst, const R8G8B8X8 *src);
+    static void readColor(gl::ColorUI *dst, const R8G8B8X8 *src);
+    static void writeColor(R8G8B8X8 *dst, const gl::ColorF *src);
+    static void writeColor(R8G8B8X8 *dst, const gl::ColorUI *src);
+    static void average(R8G8B8X8 *dst, const R8G8B8X8 *src1, const R8G8B8X8 *src2);
+};
+
+struct A1R5G5B5
+{
+    uint16_t ARGB;
+
+    static void readColor(gl::ColorF *dst, const A1R5G5B5 *src);
+    static void writeColor(A1R5G5B5 *dst, const gl::ColorF *src);
+    static void average(A1R5G5B5 *dst, const A1R5G5B5 *src1, const A1R5G5B5 *src2);
+};
+
+struct R5G5B5A1
+{
+    // OpenGL ES 2.0.25 spec Section 3.6.2: "Components are packed with the first component in the
+    // most significant
+    // bits of the bitfield, and successive component occupying progressively less significant
+    // locations"
+    uint16_t RGBA;
+
+    static void readColor(gl::ColorF *dst, const R5G5B5A1 *src);
+    static void writeColor(R5G5B5A1 *dst, const gl::ColorF *src);
+    static void average(R5G5B5A1 *dst, const R5G5B5A1 *src1, const R5G5B5A1 *src2);
+};
+
+struct R4G4B4A4
+{
+    // OpenGL ES 2.0.25 spec Section 3.6.2: "Components are packed with the first component in the
+    // most significant
+    // bits of the bitfield, and successive component occupying progressively less significant
+    // locations"
+    uint16_t RGBA;
+
+    static void readColor(gl::ColorF *dst, const R4G4B4A4 *src);
+    static void writeColor(R4G4B4A4 *dst, const gl::ColorF *src);
+    static void average(R4G4B4A4 *dst, const R4G4B4A4 *src1, const R4G4B4A4 *src2);
+};
+
+struct A4R4G4B4
+{
+    uint16_t ARGB;
+
+    static void readColor(gl::ColorF *dst, const A4R4G4B4 *src);
+    static void writeColor(A4R4G4B4 *dst, const gl::ColorF *src);
+    static void average(A4R4G4B4 *dst, const A4R4G4B4 *src1, const A4R4G4B4 *src2);
+};
+
+struct R16
+{
+    uint16_t R;
+
+    static void readColor(gl::ColorF *dst, const R16 *src);
+    static void readColor(gl::ColorUI *dst, const R16 *src);
+    static void writeColor(R16 *dst, const gl::ColorF *src);
+    static void writeColor(R16 *dst, const gl::ColorUI *src);
+    static void average(R16 *dst, const R16 *src1, const R16 *src2);
+};
+
+struct R16G16
+{
+    uint16_t R;
+    uint16_t G;
+
+    static void readColor(gl::ColorF *dst, const R16G16 *src);
+    static void readColor(gl::ColorUI *dst, const R16G16 *src);
+    static void writeColor(R16G16 *dst, const gl::ColorF *src);
+    static void writeColor(R16G16 *dst, const gl::ColorUI *src);
+    static void average(R16G16 *dst, const R16G16 *src1, const R16G16 *src2);
+};
+
+struct R16G16B16
+{
+    uint16_t R;
+    uint16_t G;
+    uint16_t B;
+
+    static void readColor(gl::ColorF *dst, const R16G16B16 *src);
+    static void readColor(gl::ColorUI *dst, const R16G16B16 *src);
+    static void writeColor(R16G16B16 *dst, const gl::ColorF *src);
+    static void writeColor(R16G16B16 *dst, const gl::ColorUI *src);
+    static void average(R16G16B16 *dst, const R16G16B16 *src1, const R16G16B16 *src2);
+};
+
+struct R16G16B16A16
+{
+    uint16_t R;
+    uint16_t G;
+    uint16_t B;
+    uint16_t A;
+
+    static void readColor(gl::ColorF *dst, const R16G16B16A16 *src);
+    static void readColor(gl::ColorUI *dst, const R16G16B16A16 *src);
+    static void writeColor(R16G16B16A16 *dst, const gl::ColorF *src);
+    static void writeColor(R16G16B16A16 *dst, const gl::ColorUI *src);
+    static void average(R16G16B16A16 *dst, const R16G16B16A16 *src1, const R16G16B16A16 *src2);
+};
+
+struct R32
+{
+    uint32_t R;
+
+    static void readColor(gl::ColorF *dst, const R32 *src);
+    static void readColor(gl::ColorUI *dst, const R32 *src);
+    static void writeColor(R32 *dst, const gl::ColorF *src);
+    static void writeColor(R32 *dst, const gl::ColorUI *src);
+    static void average(R32 *dst, const R32 *src1, const R32 *src2);
+};
+
+struct R32G32
+{
+    uint32_t R;
+    uint32_t G;
+
+    static void readColor(gl::ColorF *dst, const R32G32 *src);
+    static void readColor(gl::ColorUI *dst, const R32G32 *src);
+    static void writeColor(R32G32 *dst, const gl::ColorF *src);
+    static void writeColor(R32G32 *dst, const gl::ColorUI *src);
+    static void average(R32G32 *dst, const R32G32 *src1, const R32G32 *src2);
+};
+
+struct R32G32B32
+{
+    uint32_t R;
+    uint32_t G;
+    uint32_t B;
+
+    static void readColor(gl::ColorF *dst, const R32G32B32 *src);
+    static void readColor(gl::ColorUI *dst, const R32G32B32 *src);
+    static void writeColor(R32G32B32 *dst, const gl::ColorF *src);
+    static void writeColor(R32G32B32 *dst, const gl::ColorUI *src);
+    static void average(R32G32B32 *dst, const R32G32B32 *src1, const R32G32B32 *src2);
+};
+
+struct R32G32B32A32
+{
+    uint32_t R;
+    uint32_t G;
+    uint32_t B;
+    uint32_t A;
+
+    static void readColor(gl::ColorF *dst, const R32G32B32A32 *src);
+    static void readColor(gl::ColorUI *dst, const R32G32B32A32 *src);
+    static void writeColor(R32G32B32A32 *dst, const gl::ColorF *src);
+    static void writeColor(R32G32B32A32 *dst, const gl::ColorUI *src);
+    static void average(R32G32B32A32 *dst, const R32G32B32A32 *src1, const R32G32B32A32 *src2);
+};
+
+struct R8S
+{
+    int8_t R;
+
+    static void readColor(gl::ColorF *dst, const R8S *src);
+    static void readColor(gl::ColorI *dst, const R8S *src);
+    static void writeColor(R8S *dst, const gl::ColorF *src);
+    static void writeColor(R8S *dst, const gl::ColorI *src);
+    static void average(R8S *dst, const R8S *src1, const R8S *src2);
+};
+
+struct R8G8S
+{
+    int8_t R;
+    int8_t G;
+
+    static void readColor(gl::ColorF *dst, const R8G8S *src);
+    static void readColor(gl::ColorI *dst, const R8G8S *src);
+    static void writeColor(R8G8S *dst, const gl::ColorF *src);
+    static void writeColor(R8G8S *dst, const gl::ColorI *src);
+    static void average(R8G8S *dst, const R8G8S *src1, const R8G8S *src2);
+};
+
+struct R8G8B8S
+{
+    int8_t R;
+    int8_t G;
+    int8_t B;
+
+    static void readColor(gl::ColorF *dst, const R8G8B8S *src);
+    static void readColor(gl::ColorI *dst, const R8G8B8S *src);
+    static void writeColor(R8G8B8S *dst, const gl::ColorF *src);
+    static void writeColor(R8G8B8S *dst, const gl::ColorI *src);
+    static void average(R8G8B8S *dst, const R8G8B8S *src1, const R8G8B8S *src2);
+};
+
+struct R8G8B8A8S
+{
+    int8_t R;
+    int8_t G;
+    int8_t B;
+    int8_t A;
+
+    static void readColor(gl::ColorF *dst, const R8G8B8A8S *src);
+    static void readColor(gl::ColorI *dst, const R8G8B8A8S *src);
+    static void writeColor(R8G8B8A8S *dst, const gl::ColorF *src);
+    static void writeColor(R8G8B8A8S *dst, const gl::ColorI *src);
+    static void average(R8G8B8A8S *dst, const R8G8B8A8S *src1, const R8G8B8A8S *src2);
+};
+
+struct R16S
+{
+    int16_t R;
+
+    static void readColor(gl::ColorF *dst, const R16S *src);
+    static void readColor(gl::ColorI *dst, const R16S *src);
+    static void writeColor(R16S *dst, const gl::ColorF *src);
+    static void writeColor(R16S *dst, const gl::ColorI *src);
+    static void average(R16S *dst, const R16S *src1, const R16S *src2);
+};
+
+struct R16G16S
+{
+    int16_t R;
+    int16_t G;
+
+    static void readColor(gl::ColorF *dst, const R16G16S *src);
+    static void readColor(gl::ColorI *dst, const R16G16S *src);
+    static void writeColor(R16G16S *dst, const gl::ColorF *src);
+    static void writeColor(R16G16S *dst, const gl::ColorI *src);
+    static void average(R16G16S *dst, const R16G16S *src1, const R16G16S *src2);
+};
+
+struct R16G16B16S
+{
+    int16_t R;
+    int16_t G;
+    int16_t B;
+
+    static void readColor(gl::ColorF *dst, const R16G16B16S *src);
+    static void readColor(gl::ColorI *dst, const R16G16B16S *src);
+    static void writeColor(R16G16B16S *dst, const gl::ColorF *src);
+    static void writeColor(R16G16B16S *dst, const gl::ColorI *src);
+    static void average(R16G16B16S *dst, const R16G16B16S *src1, const R16G16B16S *src2);
+};
+
+struct R16G16B16A16S
+{
+    int16_t R;
+    int16_t G;
+    int16_t B;
+    int16_t A;
+
+    static void readColor(gl::ColorF *dst, const R16G16B16A16S *src);
+    static void readColor(gl::ColorI *dst, const R16G16B16A16S *src);
+    static void writeColor(R16G16B16A16S *dst, const gl::ColorF *src);
+    static void writeColor(R16G16B16A16S *dst, const gl::ColorI *src);
+    static void average(R16G16B16A16S *dst, const R16G16B16A16S *src1, const R16G16B16A16S *src2);
+};
+
+struct R32S
+{
+    int32_t R;
+
+    static void readColor(gl::ColorF *dst, const R32S *src);
+    static void readColor(gl::ColorI *dst, const R32S *src);
+    static void writeColor(R32S *dst, const gl::ColorF *src);
+    static void writeColor(R32S *dst, const gl::ColorI *src);
+    static void average(R32S *dst, const R32S *src1, const R32S *src2);
+};
+
+struct R32G32S
+{
+    int32_t R;
+    int32_t G;
+
+    static void readColor(gl::ColorF *dst, const R32G32S *src);
+    static void readColor(gl::ColorI *dst, const R32G32S *src);
+    static void writeColor(R32G32S *dst, const gl::ColorF *src);
+    static void writeColor(R32G32S *dst, const gl::ColorI *src);
+    static void average(R32G32S *dst, const R32G32S *src1, const R32G32S *src2);
+};
+
+struct R32G32B32S
+{
+    int32_t R;
+    int32_t G;
+    int32_t B;
+
+    static void readColor(gl::ColorF *dst, const R32G32B32S *src);
+    static void readColor(gl::ColorI *dst, const R32G32B32S *src);
+    static void writeColor(R32G32B32S *dst, const gl::ColorF *src);
+    static void writeColor(R32G32B32S *dst, const gl::ColorI *src);
+    static void average(R32G32B32S *dst, const R32G32B32S *src1, const R32G32B32S *src2);
+};
+
+struct R32G32B32A32S
+{
+    int32_t R;
+    int32_t G;
+    int32_t B;
+    int32_t A;
+
+    static void readColor(gl::ColorF *dst, const R32G32B32A32S *src);
+    static void readColor(gl::ColorI *dst, const R32G32B32A32S *src);
+    static void writeColor(R32G32B32A32S *dst, const gl::ColorF *src);
+    static void writeColor(R32G32B32A32S *dst, const gl::ColorI *src);
+    static void average(R32G32B32A32S *dst, const R32G32B32A32S *src1, const R32G32B32A32S *src2);
+};
+
+struct A16B16G16R16F
+{
+    uint16_t A;
+    uint16_t R;
+    uint16_t G;
+    uint16_t B;
+
+    static void readColor(gl::ColorF *dst, const A16B16G16R16F *src);
+    static void writeColor(A16B16G16R16F *dst, const gl::ColorF *src);
+    static void average(A16B16G16R16F *dst, const A16B16G16R16F *src1, const A16B16G16R16F *src2);
+};
+
+struct R16G16B16A16F
+{
+    uint16_t R;
+    uint16_t G;
+    uint16_t B;
+    uint16_t A;
+
+    static void readColor(gl::ColorF *dst, const R16G16B16A16F *src);
+    static void writeColor(R16G16B16A16F *dst, const gl::ColorF *src);
+    static void average(R16G16B16A16F *dst, const R16G16B16A16F *src1, const R16G16B16A16F *src2);
+};
+
+struct R16F
+{
+    uint16_t R;
+
+    static void readColor(gl::ColorF *dst, const R16F *src);
+    static void writeColor(R16F *dst, const gl::ColorF *src);
+    static void average(R16F *dst, const R16F *src1, const R16F *src2);
+};
+
+struct A16F
+{
+    uint16_t A;
+
+    static void readColor(gl::ColorF *dst, const A16F *src);
+    static void writeColor(A16F *dst, const gl::ColorF *src);
+    static void average(A16F *dst, const A16F *src1, const A16F *src2);
+};
+
+struct L16F
+{
+    uint16_t L;
+
+    static void readColor(gl::ColorF *dst, const L16F *src);
+    static void writeColor(L16F *dst, const gl::ColorF *src);
+    static void average(L16F *dst, const L16F *src1, const L16F *src2);
+};
+
+struct L16A16F
+{
+    uint16_t L;
+    uint16_t A;
+
+    static void readColor(gl::ColorF *dst, const L16A16F *src);
+    static void writeColor(L16A16F *dst, const gl::ColorF *src);
+    static void average(L16A16F *dst, const L16A16F *src1, const L16A16F *src2);
+};
+
+struct R16G16F
+{
+    uint16_t R;
+    uint16_t G;
+
+    static void readColor(gl::ColorF *dst, const R16G16F *src);
+    static void writeColor(R16G16F *dst, const gl::ColorF *src);
+    static void average(R16G16F *dst, const R16G16F *src1, const R16G16F *src2);
+};
+
+struct R16G16B16F
+{
+    uint16_t R;
+    uint16_t G;
+    uint16_t B;
+
+    static void readColor(gl::ColorF *dst, const R16G16B16F *src);
+    static void writeColor(R16G16B16F *dst, const gl::ColorF *src);
+    static void average(R16G16B16F *dst, const R16G16B16F *src1, const R16G16B16F *src2);
+};
+
+struct A32B32G32R32F
+{
+    float A;
+    float R;
+    float G;
+    float B;
+
+    static void readColor(gl::ColorF *dst, const A32B32G32R32F *src);
+    static void writeColor(A32B32G32R32F *dst, const gl::ColorF *src);
+    static void average(A32B32G32R32F *dst, const A32B32G32R32F *src1, const A32B32G32R32F *src2);
+};
+
+struct R32G32B32A32F
+{
+    float R;
+    float G;
+    float B;
+    float A;
+
+    static void readColor(gl::ColorF *dst, const R32G32B32A32F *src);
+    static void writeColor(R32G32B32A32F *dst, const gl::ColorF *src);
+    static void average(R32G32B32A32F *dst, const R32G32B32A32F *src1, const R32G32B32A32F *src2);
+};
+
+struct R32F
+{
+    float R;
+
+    static void readColor(gl::ColorF *dst, const R32F *src);
+    static void writeColor(R32F *dst, const gl::ColorF *src);
+    static void average(R32F *dst, const R32F *src1, const R32F *src2);
+};
+
+struct A32F
+{
+    float A;
+
+    static void readColor(gl::ColorF *dst, const A32F *src);
+    static void writeColor(A32F *dst, const gl::ColorF *src);
+    static void average(A32F *dst, const A32F *src1, const A32F *src2);
+};
+
+struct L32F
+{
+    float L;
+
+    static void readColor(gl::ColorF *dst, const L32F *src);
+    static void writeColor(L32F *dst, const gl::ColorF *src);
+    static void average(L32F *dst, const L32F *src1, const L32F *src2);
+};
+
+struct L32A32F
+{
+    float L;
+    float A;
+
+    static void readColor(gl::ColorF *dst, const L32A32F *src);
+    static void writeColor(L32A32F *dst, const gl::ColorF *src);
+    static void average(L32A32F *dst, const L32A32F *src1, const L32A32F *src2);
+};
+
+struct R32G32F
+{
+    float R;
+    float G;
+
+    static void readColor(gl::ColorF *dst, const R32G32F *src);
+    static void writeColor(R32G32F *dst, const gl::ColorF *src);
+    static void average(R32G32F *dst, const R32G32F *src1, const R32G32F *src2);
+};
+
+struct R32G32B32F
+{
+    float R;
+    float G;
+    float B;
+
+    static void readColor(gl::ColorF *dst, const R32G32B32F *src);
+    static void writeColor(R32G32B32F *dst, const gl::ColorF *src);
+    static void average(R32G32B32F *dst, const R32G32B32F *src1, const R32G32B32F *src2);
+};
+
+struct R10G10B10A2
+{
+    uint32_t R : 10;
+    uint32_t G : 10;
+    uint32_t B : 10;
+    uint32_t A : 2;
+
+    static void readColor(gl::ColorF *dst, const R10G10B10A2 *src);
+    static void readColor(gl::ColorUI *dst, const R10G10B10A2 *src);
+    static void writeColor(R10G10B10A2 *dst, const gl::ColorF *src);
+    static void writeColor(R10G10B10A2 *dst, const gl::ColorUI *src);
+    static void average(R10G10B10A2 *dst, const R10G10B10A2 *src1, const R10G10B10A2 *src2);
+};
+static_assert(sizeof(R10G10B10A2) == 4, "R10G10B10A2 struct not 32-bits.");
+
+struct R10G10B10A2S
+{
+    int32_t R : 10;
+    int32_t G : 10;
+    int32_t B : 10;
+    int32_t A : 2;
+
+    static void readColor(gl::ColorF *dst, const R10G10B10A2S *src);
+    static void readColor(gl::ColorI *dst, const R10G10B10A2S *src);
+    static void writeColor(R10G10B10A2S *dst, const gl::ColorF *src);
+    static void writeColor(R10G10B10A2S *dst, const gl::ColorI *src);
+    static void average(R10G10B10A2S *dst, const R10G10B10A2S *src1, const R10G10B10A2S *src2);
+};
+static_assert(sizeof(R10G10B10A2S) == 4, "R10G10B10A2S struct not 32-bits.");
+
+struct R10G10B10X2
+{
+    uint32_t R : 10;
+    uint32_t G : 10;
+    uint32_t B : 10;
+
+    static void readColor(gl::ColorF *dst, const R10G10B10X2 *src);
+    static void readColor(gl::ColorUI *dst, const R10G10B10X2 *src);
+    static void writeColor(R10G10B10X2 *dst, const gl::ColorF *src);
+    static void writeColor(R10G10B10X2 *dst, const gl::ColorUI *src);
+    static void average(R10G10B10X2 *dst, const R10G10B10X2 *src1, const R10G10B10X2 *src2);
+};
+static_assert(sizeof(R10G10B10X2) == 4, "R10G10B10X2 struct not 32-bits.");
+
+struct B10G10R10A2
+{
+    uint32_t B : 10;
+    uint32_t G : 10;
+    uint32_t R : 10;
+    uint32_t A : 2;
+
+    static void readColor(gl::ColorF *dst, const B10G10R10A2 *src);
+    static void readColor(gl::ColorUI *dst, const B10G10R10A2 *src);
+    static void writeColor(B10G10R10A2 *dst, const gl::ColorF *src);
+    static void writeColor(B10G10R10A2 *dst, const gl::ColorUI *src);
+    static void average(B10G10R10A2 *dst, const B10G10R10A2 *src1, const B10G10R10A2 *src2);
+};
+static_assert(sizeof(B10G10R10A2) == 4, "B10G10R10A2 struct not 32-bits.");
+
+struct R9G9B9E5
+{
+    uint32_t R : 9;
+    uint32_t G : 9;
+    uint32_t B : 9;
+    uint32_t E : 5;
+
+    static void readColor(gl::ColorF *dst, const R9G9B9E5 *src);
+    static void writeColor(R9G9B9E5 *dst, const gl::ColorF *src);
+    static void average(R9G9B9E5 *dst, const R9G9B9E5 *src1, const R9G9B9E5 *src2);
+};
+static_assert(sizeof(R9G9B9E5) == 4, "R9G9B9E5 struct not 32-bits.");
+
+struct R11G11B10F
+{
+    uint32_t R : 11;
+    uint32_t G : 11;
+    uint32_t B : 10;
+
+    static void readColor(gl::ColorF *dst, const R11G11B10F *src);
+    static void writeColor(R11G11B10F *dst, const gl::ColorF *src);
+    static void average(R11G11B10F *dst, const R11G11B10F *src1, const R11G11B10F *src2);
+};
+static_assert(sizeof(R11G11B10F) == 4, "R11G11B10F struct not 32-bits.");
+
+struct D24S8
+{
+    uint32_t S : 8;
+    uint32_t D : 24;
+
+    static void ReadDepthStencil(DepthStencil *dst, const D24S8 *src);
+    static void WriteDepthStencil(D24S8 *dst, const DepthStencil *src);
+};
+
+struct S8
+{
+    uint8_t S;
+
+    static void ReadDepthStencil(DepthStencil *dst, const S8 *src);
+    static void WriteDepthStencil(S8 *dst, const DepthStencil *src);
+};
+
+struct D16
+{
+    uint16_t D;
+
+    static void ReadDepthStencil(DepthStencil *dst, const D16 *src);
+    static void WriteDepthStencil(D16 *dst, const DepthStencil *src);
+};
+
+struct D24X8
+{
+    uint32_t D : 24;
+    uint32_t X : 8;
+
+    static void ReadDepthStencil(DepthStencil *dst, const D24X8 *src);
+    static void WriteDepthStencil(D24X8 *dst, const DepthStencil *src);
+};
+
+struct D32F
+{
+    float D;
+
+    static void ReadDepthStencil(DepthStencil *dst, const D32F *src);
+    static void WriteDepthStencil(D32F *dst, const DepthStencil *src);
+};
+
+struct D32
+{
+    uint32_t D;
+
+    static void ReadDepthStencil(DepthStencil *dst, const D32 *src);
+    static void WriteDepthStencil(D32 *dst, const DepthStencil *src);
+};
+
+struct D32FS8X24
+{
+    float D;
+    uint32_t S;
+
+    static void ReadDepthStencil(DepthStencil *dst, const D32FS8X24 *src);
+    static void WriteDepthStencil(D32FS8X24 *dst, const DepthStencil *src);
+};
+}  // namespace angle
+
+#endif  // IMAGEUTIL_IMAGEFORMATS_H_
diff --git a/gfx/angle/checkout/src/image_util/loadimage.cpp b/gfx/angle/checkout/src/image_util/loadimage.cpp
new file mode 100644
index 0000000000..97169c00f5
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/loadimage.cpp
@@ -0,0 +1,1796 @@
+//
+// Copyright 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// angle_loadimage.cpp: Defines image loading functions.
+
+#include "image_util/loadimage.h"
+
+#include "common/mathutil.h"
+#include "common/platform.h"
+#include "image_util/imageformats.h"
+
+namespace angle
+{
+
+void LoadA8ToRGBA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+#if defined(ANGLE_USE_SSE)
+    if (gl::supportsSSE2())
+    {
+        __m128i zeroWide = _mm_setzero_si128();
+
+        for (size_t z = 0; z < depth; z++)
+        {
+            for (size_t y = 0; y < height; y++)
+            {
+                const uint8_t *source =
+                    priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+                uint32_t *dest = priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch,
+                                                                   outputDepthPitch);
+
+                size_t x = 0;
+
+                // Make output writes aligned
+                for (; ((reinterpret_cast<intptr_t>(&dest[x]) & 0xF) != 0 && x < width); x++)
+                {
+                    dest[x] = static_cast<uint32_t>(source[x]) << 24;
+                }
+
+                for (; x + 7 < width; x += 8)
+                {
+                    __m128i sourceData =
+                        _mm_loadl_epi64(reinterpret_cast<const __m128i *>(&source[x]));
+                    // Interleave each byte to 16bit, make the lower byte to zero
+                    sourceData = _mm_unpacklo_epi8(zeroWide, sourceData);
+                    // Interleave each 16bit to 32bit, make the lower 16bit to zero
+                    __m128i lo = _mm_unpacklo_epi16(zeroWide, sourceData);
+                    __m128i hi = _mm_unpackhi_epi16(zeroWide, sourceData);
+
+                    _mm_store_si128(reinterpret_cast<__m128i *>(&dest[x]), lo);
+                    _mm_store_si128(reinterpret_cast<__m128i *>(&dest[x + 4]), hi);
+                }
+
+                // Handle the remainder
+                for (; x < width; x++)
+                {
+                    dest[x] = static_cast<uint32_t>(source[x]) << 24;
+                }
+            }
+        }
+
+        return;
+    }
+#endif
+
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *source =
+                priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = static_cast<uint32_t>(source[x]) << 24;
+            }
+        }
+    }
+}
+
+void LoadA8ToBGRA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+    // Same as loading to RGBA
+    LoadA8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                  outputRowPitch, outputDepthPitch);
+}
+
+void LoadA32FToRGBA32F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *dest =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = 0.0f;
+                dest[4 * x + 1] = 0.0f;
+                dest[4 * x + 2] = 0.0f;
+                dest[4 * x + 3] = source[x];
+            }
+        }
+    }
+}
+
+void LoadA16FToRGBA16F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = 0;
+                dest[4 * x + 1] = 0;
+                dest[4 * x + 2] = 0;
+                dest[4 * x + 3] = source[x];
+            }
+        }
+    }
+}
+
+void LoadL8ToRGBA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *source =
+                priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint8_t sourceVal = source[x];
+                dest[4 * x + 0]   = sourceVal;
+                dest[4 * x + 1]   = sourceVal;
+                dest[4 * x + 2]   = sourceVal;
+                dest[4 * x + 3]   = 0xFF;
+            }
+        }
+    }
+}
+
+void LoadL8ToBGRA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+    // Same as loading to RGBA
+    LoadL8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                  outputRowPitch, outputDepthPitch);
+}
+
+void LoadL32FToRGBA32F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *dest =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = source[x];
+                dest[4 * x + 1] = source[x];
+                dest[4 * x + 2] = source[x];
+                dest[4 * x + 3] = 1.0f;
+            }
+        }
+    }
+}
+
+void LoadL16FToRGBA16F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = source[x];
+                dest[4 * x + 1] = source[x];
+                dest[4 * x + 2] = source[x];
+                dest[4 * x + 3] = gl::Float16One;
+            }
+        }
+    }
+}
+
+void LoadLA8ToRGBA8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *source =
+                priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = source[2 * x + 0];
+                dest[4 * x + 1] = source[2 * x + 0];
+                dest[4 * x + 2] = source[2 * x + 0];
+                dest[4 * x + 3] = source[2 * x + 1];
+            }
+        }
+    }
+}
+
+void LoadLA8ToBGRA8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch)
+{
+    // Same as loading to RGBA
+    LoadLA8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                   outputRowPitch, outputDepthPitch);
+}
+
+void LoadLA32FToRGBA32F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *dest =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = source[2 * x + 0];
+                dest[4 * x + 1] = source[2 * x + 0];
+                dest[4 * x + 2] = source[2 * x + 0];
+                dest[4 * x + 3] = source[2 * x + 1];
+            }
+        }
+    }
+}
+
+void LoadLA16FToRGBA16F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = source[2 * x + 0];
+                dest[4 * x + 1] = source[2 * x + 0];
+                dest[4 * x + 2] = source[2 * x + 0];
+                dest[4 * x + 3] = source[2 * x + 1];
+            }
+        }
+    }
+}
+
+void LoadRGB8ToBGR565(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *source =
+                priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint8_t r8 = source[x * 3 + 0];
+                uint8_t g8 = source[x * 3 + 1];
+                uint8_t b8 = source[x * 3 + 2];
+                auto r5    = static_cast<uint16_t>(r8 >> 3);
+                auto g6    = static_cast<uint16_t>(g8 >> 2);
+                auto b5    = static_cast<uint16_t>(b8 >> 3);
+                dest[x]    = (r5 << 11) | (g6 << 5) | b5;
+            }
+        }
+    }
+}
+
+void LoadRGB565ToBGR565(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                // The GL type RGB is packed with with red in the MSB, while the D3D11 type BGR
+                // is packed with red in the LSB
+                auto rgb    = source[x];
+                uint16_t r5 = gl::getShiftedData<5, 11>(rgb);
+                uint16_t g6 = gl::getShiftedData<6, 5>(rgb);
+                uint16_t b5 = gl::getShiftedData<5, 0>(rgb);
+                dest[x]     = (r5 << 11) | (g6 << 5) | b5;
+            }
+        }
+    }
+}
+
+void LoadRGB8ToBGRX8(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *source =
+                priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = source[x * 3 + 2];
+                dest[4 * x + 1] = source[x * 3 + 1];
+                dest[4 * x + 2] = source[x * 3 + 0];
+                dest[4 * x + 3] = 0xFF;
+            }
+        }
+    }
+}
+
+void LoadRG8ToBGRX8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *source =
+                priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = 0x00;
+                dest[4 * x + 1] = source[x * 2 + 1];
+                dest[4 * x + 2] = source[x * 2 + 0];
+                dest[4 * x + 3] = 0xFF;
+            }
+        }
+    }
+}
+
+void LoadR8ToBGRX8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *source =
+                priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[4 * x + 0] = 0x00;
+                dest[4 * x + 1] = 0x00;
+                dest[4 * x + 2] = source[x];
+                dest[4 * x + 3] = 0xFF;
+            }
+        }
+    }
+}
+
+void LoadR5G6B5ToBGRA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t rgb = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((rgb & 0x001F) << 3) | ((rgb & 0x001F) >> 2));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((rgb & 0x07E0) >> 3) | ((rgb & 0x07E0) >> 9));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((rgb & 0xF800) >> 8) | ((rgb & 0xF800) >> 13));
+                dest[4 * x + 3] = 0xFF;
+            }
+        }
+    }
+}
+
+void LoadR5G6B5ToRGBA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t rgb = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((rgb & 0xF800) >> 8) | ((rgb & 0xF800) >> 13));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((rgb & 0x07E0) >> 3) | ((rgb & 0x07E0) >> 9));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((rgb & 0x001F) << 3) | ((rgb & 0x001F) >> 2));
+                dest[4 * x + 3] = 0xFF;
+            }
+        }
+    }
+}
+
+void LoadRGBA8ToBGRA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+#if defined(ANGLE_USE_SSE)
+    if (gl::supportsSSE2())
+    {
+        __m128i brMask = _mm_set1_epi32(0x00ff00ff);
+
+        for (size_t z = 0; z < depth; z++)
+        {
+            for (size_t y = 0; y < height; y++)
+            {
+                const uint32_t *source =
+                    priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+                uint32_t *dest = priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch,
+                                                                   outputDepthPitch);
+
+                size_t x = 0;
+
+                // Make output writes aligned
+                for (; ((reinterpret_cast<intptr_t>(&dest[x]) & 15) != 0) && x < width; x++)
+                {
+                    uint32_t rgba = source[x];
+                    dest[x]       = (ANGLE_ROTL(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00);
+                }
+
+                for (; x + 3 < width; x += 4)
+                {
+                    __m128i sourceData =
+                        _mm_loadu_si128(reinterpret_cast<const __m128i *>(&source[x]));
+                    // Mask out g and a, which don't change
+                    __m128i gaComponents = _mm_andnot_si128(brMask, sourceData);
+                    // Mask out b and r
+                    __m128i brComponents = _mm_and_si128(sourceData, brMask);
+                    // Swap b and r
+                    __m128i brSwapped = _mm_shufflehi_epi16(
+                        _mm_shufflelo_epi16(brComponents, _MM_SHUFFLE(2, 3, 0, 1)),
+                        _MM_SHUFFLE(2, 3, 0, 1));
+                    __m128i result = _mm_or_si128(gaComponents, brSwapped);
+                    _mm_store_si128(reinterpret_cast<__m128i *>(&dest[x]), result);
+                }
+
+                // Perform leftover writes
+                for (; x < width; x++)
+                {
+                    uint32_t rgba = source[x];
+                    dest[x]       = (ANGLE_ROTL(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00);
+                }
+            }
+        }
+
+        return;
+    }
+#endif
+
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t rgba = source[x];
+                dest[x]       = (ANGLE_ROTL(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00);
+            }
+        }
+    }
+}
+
+void LoadRGBA8ToBGRA4(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t rgba8 = source[x];
+                auto r4        = static_cast<uint16_t>((rgba8 & 0x000000FF) >> 4);
+                auto g4        = static_cast<uint16_t>((rgba8 & 0x0000FF00) >> 12);
+                auto b4        = static_cast<uint16_t>((rgba8 & 0x00FF0000) >> 20);
+                auto a4        = static_cast<uint16_t>((rgba8 & 0xFF000000) >> 28);
+                dest[x]        = (a4 << 12) | (r4 << 8) | (g4 << 4) | b4;
+            }
+        }
+    }
+}
+
+void LoadRGBA8ToRGBA4(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t rgba8 = source[x];
+                auto r4        = static_cast<uint16_t>((rgba8 & 0x000000FF) >> 4);
+                auto g4        = static_cast<uint16_t>((rgba8 & 0x0000FF00) >> 12);
+                auto b4        = static_cast<uint16_t>((rgba8 & 0x00FF0000) >> 20);
+                auto a4        = static_cast<uint16_t>((rgba8 & 0xFF000000) >> 28);
+                dest[x]        = (r4 << 12) | (g4 << 8) | (b4 << 4) | a4;
+            }
+        }
+    }
+}
+
+void LoadRGBA4ToARGB4(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = ANGLE_ROTR16(source[x], 4);
+            }
+        }
+    }
+}
+
+void LoadRGBA4ToBGRA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t rgba = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((rgba & 0x00F0) << 0) | ((rgba & 0x00F0) >> 4));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((rgba & 0x0F00) >> 4) | ((rgba & 0x0F00) >> 8));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((rgba & 0xF000) >> 8) | ((rgba & 0xF000) >> 12));
+                dest[4 * x + 3] =
+                    static_cast<uint8_t>(((rgba & 0x000F) << 4) | ((rgba & 0x000F) >> 0));
+            }
+        }
+    }
+}
+
+void LoadRGBA4ToRGBA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t rgba = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((rgba & 0xF000) >> 8) | ((rgba & 0xF000) >> 12));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((rgba & 0x0F00) >> 4) | ((rgba & 0x0F00) >> 8));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((rgba & 0x00F0) << 0) | ((rgba & 0x00F0) >> 4));
+                dest[4 * x + 3] =
+                    static_cast<uint8_t>(((rgba & 0x000F) << 4) | ((rgba & 0x000F) >> 0));
+            }
+        }
+    }
+}
+
+void LoadBGRA4ToBGRA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t bgra = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((bgra & 0xF000) >> 8) | ((bgra & 0xF000) >> 12));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((bgra & 0x0F00) >> 4) | ((bgra & 0x0F00) >> 8));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((bgra & 0x00F0) << 0) | ((bgra & 0x00F0) >> 4));
+                dest[4 * x + 3] =
+                    static_cast<uint8_t>(((bgra & 0x000F) << 4) | ((bgra & 0x000F) >> 0));
+            }
+        }
+    }
+}
+
+void LoadRGBA8ToBGR5A1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t rgba8 = source[x];
+                auto r5        = static_cast<uint16_t>((rgba8 & 0x000000FF) >> 3);
+                auto g5        = static_cast<uint16_t>((rgba8 & 0x0000FF00) >> 11);
+                auto b5        = static_cast<uint16_t>((rgba8 & 0x00FF0000) >> 19);
+                auto a1        = static_cast<uint16_t>((rgba8 & 0xFF000000) >> 31);
+                dest[x]        = (a1 << 15) | (r5 << 10) | (g5 << 5) | b5;
+            }
+        }
+    }
+}
+
+void LoadRGBA8ToRGB5A1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t rgba8 = source[x];
+                auto r5        = static_cast<uint16_t>((rgba8 & 0x000000FF) >> 3);
+                auto g5        = static_cast<uint16_t>((rgba8 & 0x0000FF00) >> 11);
+                auto b5        = static_cast<uint16_t>((rgba8 & 0x00FF0000) >> 19);
+                auto a1        = static_cast<uint16_t>((rgba8 & 0xFF000000) >> 31);
+                dest[x]        = (r5 << 11) | (g5 << 6) | (b5 << 1) | a1;
+            }
+        }
+    }
+}
+
+void LoadRGB10A2ToBGR5A1(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const R10G10B10A2 *source =
+                priv::OffsetDataPointer<R10G10B10A2>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                R10G10B10A2 rgb10a2 = source[x];
+
+                uint16_t r5 = static_cast<uint16_t>(rgb10a2.R >> 5u);
+                uint16_t g5 = static_cast<uint16_t>(rgb10a2.G >> 5u);
+                uint16_t b5 = static_cast<uint16_t>(rgb10a2.B >> 5u);
+                uint16_t a1 = static_cast<uint16_t>(rgb10a2.A >> 1u);
+
+                dest[x] = (a1 << 15) | (r5 << 10) | (g5 << 5) | b5;
+            }
+        }
+    }
+}
+
+void LoadRGB10A2ToRGB5A1(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const R10G10B10A2 *source =
+                priv::OffsetDataPointer<R10G10B10A2>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                R10G10B10A2 rgb10a2 = source[x];
+
+                uint16_t r5 = static_cast<uint16_t>(rgb10a2.R >> 5u);
+                uint16_t g5 = static_cast<uint16_t>(rgb10a2.G >> 5u);
+                uint16_t b5 = static_cast<uint16_t>(rgb10a2.B >> 5u);
+                uint16_t a1 = static_cast<uint16_t>(rgb10a2.A >> 1u);
+
+                dest[x] = (r5 << 11) | (g5 << 6) | (b5 << 1) | a1;
+            }
+        }
+    }
+}
+
+void LoadRGB5A1ToA1RGB5(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = ANGLE_ROTR16(source[x], 1);
+            }
+        }
+    }
+}
+
+void LoadRGB5A1ToBGR5A1(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t rgba = source[x];
+                auto r5       = static_cast<uint16_t>((rgba & 0xF800) >> 11);
+                auto g5       = static_cast<uint16_t>((rgba & 0x07c0) >> 6);
+                auto b5       = static_cast<uint16_t>((rgba & 0x003e) >> 1);
+                auto a1       = static_cast<uint16_t>((rgba & 0x0001));
+                dest[x]       = (b5 << 11) | (g5 << 6) | (r5 << 1) | a1;
+            }
+        }
+    }
+}
+
+void LoadRGB5A1ToBGRA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t rgba = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((rgba & 0x003E) << 2) | ((rgba & 0x003E) >> 3));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((rgba & 0x07C0) >> 3) | ((rgba & 0x07C0) >> 8));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((rgba & 0xF800) >> 8) | ((rgba & 0xF800) >> 13));
+                dest[4 * x + 3] = static_cast<uint8_t>((rgba & 0x0001) ? 0xFF : 0);
+            }
+        }
+    }
+}
+
+void LoadRGB5A1ToRGBA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t rgba = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((rgba & 0xF800) >> 8) | ((rgba & 0xF800) >> 13));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((rgba & 0x07C0) >> 3) | ((rgba & 0x07C0) >> 8));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((rgba & 0x003E) << 2) | ((rgba & 0x003E) >> 3));
+                dest[4 * x + 3] = static_cast<uint8_t>((rgba & 0x0001) ? 0xFF : 0);
+            }
+        }
+    }
+}
+
+void LoadBGR5A1ToBGRA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint16_t bgra = source[x];
+                dest[4 * x + 0] =
+                    static_cast<uint8_t>(((bgra & 0xF800) >> 8) | ((bgra & 0xF800) >> 13));
+                dest[4 * x + 1] =
+                    static_cast<uint8_t>(((bgra & 0x07C0) >> 3) | ((bgra & 0x07C0) >> 8));
+                dest[4 * x + 2] =
+                    static_cast<uint8_t>(((bgra & 0x003E) << 2) | ((bgra & 0x003E) >> 3));
+                dest[4 * x + 3] = static_cast<uint8_t>((bgra & 0x0001) ? 0xFF : 0);
+            }
+        }
+    }
+}
+
+void LoadRGB10A2ToRGBA8(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t rgba   = source[x];
+                dest[4 * x + 0] = static_cast<uint8_t>((rgba & 0x000003FF) >> 2);
+                dest[4 * x + 1] = static_cast<uint8_t>((rgba & 0x000FFC00) >> 12);
+                dest[4 * x + 2] = static_cast<uint8_t>((rgba & 0x3FF00000) >> 22);
+                dest[4 * x + 3] = static_cast<uint8_t>(((rgba & 0xC0000000) >> 30) * 0x55);
+            }
+        }
+    }
+}
+
+void LoadRGB10A2ToRGB10X2(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = source[x] | 0xC0000000;
+            }
+        }
+    }
+}
+
+void LoadRGB16FToRGB9E5(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = gl::convertRGBFloatsTo999E5(gl::float16ToFloat32(source[x * 3 + 0]),
+                                                      gl::float16ToFloat32(source[x * 3 + 1]),
+                                                      gl::float16ToFloat32(source[x * 3 + 2]));
+            }
+        }
+    }
+}
+
+void LoadRGB32FToRGB9E5(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = gl::convertRGBFloatsTo999E5(source[x * 3 + 0], source[x * 3 + 1],
+                                                      source[x * 3 + 2]);
+            }
+        }
+    }
+}
+
+void LoadRGB16FToRG11B10F(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = (gl::float32ToFloat11(gl::float16ToFloat32(source[x * 3 + 0])) << 0) |
+                          (gl::float32ToFloat11(gl::float16ToFloat32(source[x * 3 + 1])) << 11) |
+                          (gl::float32ToFloat10(gl::float16ToFloat32(source[x * 3 + 2])) << 22);
+            }
+        }
+    }
+}
+
+void LoadRGB32FToRG11B10F(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = (gl::float32ToFloat11(source[x * 3 + 0]) << 0) |
+                          (gl::float32ToFloat11(source[x * 3 + 1]) << 11) |
+                          (gl::float32ToFloat10(source[x * 3 + 2]) << 22);
+            }
+        }
+    }
+}
+
+void LoadG8R24ToR24G8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t d = source[x] >> 8;
+                uint8_t s  = source[x] & 0xFF;
+                dest[x]    = d | (s << 24);
+            }
+        }
+    }
+}
+
+void LoadD24S8ToD32FS8X24(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *destDepth =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            uint32_t *destStencil =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch) +
+                1;
+            for (size_t x = 0; x < width; x++)
+            {
+                destDepth[x * 2]   = (source[x] & 0xFFFFFF) / static_cast<float>(0xFFFFFF);
+                destStencil[x * 2] = source[x] & 0xFF000000;
+            }
+        }
+    }
+}
+
+void LoadD24S8ToD32F(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *destDepth =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t sourcePixel = (source[x] >> 8) & 0xFFFFFF;
+                destDepth[x]         = sourcePixel / static_cast<float>(0xFFFFFF);
+            }
+        }
+    }
+}
+
+void LoadD32ToD32FX32(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *destDepth =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                destDepth[x * 2] = source[x] / static_cast<float>(0xFFFFFFFF);
+            }
+        }
+    }
+}
+
+void LoadD32ToD32F(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *destDepth =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t sourcePixel = source[x];
+                destDepth[x]         = sourcePixel / static_cast<float>(0xFFFFFFFF);
+            }
+        }
+    }
+}
+
+void LoadD32FToD32F(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *dest =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = gl::clamp01(source[x]);
+            }
+        }
+    }
+}
+
+void LoadD32FS8X24ToD24S8(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *sourceDepth =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            const uint32_t *sourceStencil =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch) + 1;
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                uint32_t d = static_cast<uint32_t>(gl::clamp01(sourceDepth[x * 2]) * 0xFFFFFF);
+                uint32_t s = sourceStencil[x * 2] & 0xFF000000;
+                dest[x]    = d | s;
+            }
+        }
+    }
+}
+
+void LoadX24S8ToS8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source = reinterpret_cast<const uint32_t *>(
+                input + (y * inputRowPitch) + (z * inputDepthPitch));
+            uint8_t *destStencil =
+                reinterpret_cast<uint8_t *>(output + (y * outputRowPitch) + (z * outputDepthPitch));
+            for (size_t x = 0; x < width; x++)
+            {
+                destStencil[x] = (source[x] & 0xFF);
+            }
+        }
+    }
+}
+
+void LoadX32S8ToS8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source = reinterpret_cast<const uint32_t *>(
+                input + (y * inputRowPitch) + (z * inputDepthPitch));
+            uint8_t *destStencil =
+                reinterpret_cast<uint8_t *>(output + (y * outputRowPitch) + (z * outputDepthPitch));
+            for (size_t x = 0; x < width; x++)
+            {
+                destStencil[x] = (source[(x * 2) + 1] & 0xFF);
+            }
+        }
+    }
+}
+
+void LoadD32FS8X24ToD32F(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *sourceDepth =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *destDepth =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                destDepth[x] = gl::clamp01(sourceDepth[x * 2]);
+            }
+        }
+    }
+}
+
+void LoadD32FS8X24ToD32FS8X24(size_t width,
+                              size_t height,
+                              size_t depth,
+                              const uint8_t *input,
+                              size_t inputRowPitch,
+                              size_t inputDepthPitch,
+                              uint8_t *output,
+                              size_t outputRowPitch,
+                              size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *sourceDepth =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            const uint32_t *sourceStencil =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch) + 1;
+            float *destDepth =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            uint32_t *destStencil =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch) +
+                1;
+            for (size_t x = 0; x < width; x++)
+            {
+                destDepth[x * 2]   = gl::clamp01(sourceDepth[x * 2]);
+                destStencil[x * 2] = sourceStencil[x * 2] & 0xFF000000;
+            }
+        }
+    }
+}
+
+void LoadRGB32FToRGBA16F(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x * 4 + 0] = gl::float32ToFloat16(source[x * 3 + 0]);
+                dest[x * 4 + 1] = gl::float32ToFloat16(source[x * 3 + 1]);
+                dest[x * 4 + 2] = gl::float32ToFloat16(source[x * 3 + 2]);
+                dest[x * 4 + 3] = gl::Float16One;
+            }
+        }
+    }
+}
+
+void LoadRGB32FToRGB16F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source =
+                priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x * 3 + 0] = gl::float32ToFloat16(source[x * 3 + 0]);
+                dest[x * 3 + 1] = gl::float32ToFloat16(source[x * 3 + 1]);
+                dest[x * 3 + 2] = gl::float32ToFloat16(source[x * 3 + 2]);
+            }
+        }
+    }
+}
+
+void LoadR32ToR16(size_t width,
+                  size_t height,
+                  size_t depth,
+                  const uint8_t *input,
+                  size_t inputRowPitch,
+                  size_t inputDepthPitch,
+                  uint8_t *output,
+                  size_t outputRowPitch,
+                  size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = source[x] >> 16;
+            }
+        }
+    }
+}
+
+void LoadR32ToR24G8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint32_t *source =
+                priv::OffsetDataPointer<uint32_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint32_t *dest =
+                priv::OffsetDataPointer<uint32_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = source[x] >> 8;
+            }
+        }
+    }
+}
+
+// This conversion was added to support using a 32F depth buffer
+// as emulation for 16unorm depth buffer in Metal.
+// See angleproject:6597
+void LoadUNorm16To32F(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *dest =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = static_cast<float>(source[x]) / 0xFFFF;
+            }
+        }
+    }
+}
+
+// This conversion was added to support using a 32F depth buffer
+// as emulation for 16unorm depth buffer in Metal. In OpenGL ES 3.0
+// you're allowed to pass UNSIGNED_INT as input to texImage2D and
+// so this conversion is neccasary.
+//
+// See angleproject:6597
+void LoadUNorm32To32F(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint16_t *source =
+                priv::OffsetDataPointer<uint16_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            float *dest =
+                priv::OffsetDataPointer<float>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                dest[x] = static_cast<float>(source[x]) / static_cast<float>(0xFFFFFFFFU);
+            }
+        }
+    }
+}
+
+void LoadYuvToNative(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch)
+{
+    // For YUV formats it is assumed that source has tightly packed data.
+    memcpy(output, input, inputDepthPitch);
+}
+
+}  // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/loadimage.h b/gfx/angle/checkout/src/image_util/loadimage.h
new file mode 100644
index 0000000000..5ae4d47938
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/loadimage.h
@@ -0,0 +1,976 @@
+//
+// Copyright 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// loadimage.h: Defines image loading functions
+
+#ifndef IMAGEUTIL_LOADIMAGE_H_
+#define IMAGEUTIL_LOADIMAGE_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace angle
+{
+
+void LoadA8ToRGBA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadA8ToBGRA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadA32FToRGBA32F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadA16FToRGBA16F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadL8ToRGBA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadL8ToBGRA8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadL32FToRGBA32F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadL16FToRGBA16F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadLA8ToRGBA8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch);
+
+void LoadLA8ToBGRA8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch);
+
+void LoadLA32FToRGBA32F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadLA16FToRGBA16F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB8ToBGR565(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGB565ToBGR565(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB8ToBGRX8(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch);
+
+void LoadRG8ToBGRX8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch);
+
+void LoadR8ToBGRX8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadR5G6B5ToBGRA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadR5G6B5ToRGBA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadRGBA8ToBGRA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGBA8ToBGRA4(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGBA8ToRGBA4(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGBA4ToARGB4(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGBA4ToRGBA4(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGBA4ToBGRA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGBA4ToRGBA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadBGRA4ToBGRA8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGBA8ToBGR5A1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadRGBA8ToRGB5A1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadRGB10A2ToBGR5A1(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadRGB10A2ToRGB5A1(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadRGB5A1ToRGB5A1(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB5A1ToBGR5A1(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB5A1ToA1RGB5(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB5A1ToBGRA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadRGB5A1ToRGBA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadBGR5A1ToBGRA8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadRGB10A2ToRGBA8(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB10A2ToRGB10X2(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadRGB16FToRGB9E5(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB32FToRGB9E5(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadRGB16FToRG11B10F(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadRGB32FToRG11B10F(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadG8R24ToR24G8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadD24S8ToD32FS8X24(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadD24S8ToD32F(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch);
+
+void LoadD32ToD32FX32(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadD32ToD32F(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadD32FToD32F(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch);
+
+void LoadD32FS8X24ToD24S8(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadX24S8ToS8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadX32S8ToS8(size_t width,
+                   size_t height,
+                   size_t depth,
+                   const uint8_t *input,
+                   size_t inputRowPitch,
+                   size_t inputDepthPitch,
+                   uint8_t *output,
+                   size_t outputRowPitch,
+                   size_t outputDepthPitch);
+
+void LoadD32FS8X24ToD32F(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadD32FS8X24ToD32FS8X24(size_t width,
+                              size_t height,
+                              size_t depth,
+                              const uint8_t *input,
+                              size_t inputRowPitch,
+                              size_t inputDepthPitch,
+                              uint8_t *output,
+                              size_t outputRowPitch,
+                              size_t outputDepthPitch);
+
+template <typename type, size_t componentCount>
+inline void LoadToNative(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+template <typename type, uint32_t fourthComponentBits>
+inline void LoadToNative3To4(size_t width,
+                             size_t height,
+                             size_t depth,
+                             const uint8_t *input,
+                             size_t inputRowPitch,
+                             size_t inputDepthPitch,
+                             uint8_t *output,
+                             size_t outputRowPitch,
+                             size_t outputDepthPitch);
+
+template <size_t componentCount>
+inline void Load32FTo16F(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadUNorm16To32F(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadUNorm32To32F(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadRGB32FToRGBA16F(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadRGB32FToRGB16F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+template <size_t blockWidth, size_t blockHeight, size_t blockDepth, size_t blockSize>
+inline void LoadCompressedToNative(size_t width,
+                                   size_t height,
+                                   size_t depth,
+                                   const uint8_t *input,
+                                   size_t inputRowPitch,
+                                   size_t inputDepthPitch,
+                                   uint8_t *output,
+                                   size_t outputRowPitch,
+                                   size_t outputDepthPitch);
+
+void LoadR32ToR16(size_t width,
+                  size_t height,
+                  size_t depth,
+                  const uint8_t *input,
+                  size_t inputRowPitch,
+                  size_t inputDepthPitch,
+                  uint8_t *output,
+                  size_t outputRowPitch,
+                  size_t outputDepthPitch);
+
+template <typename type,
+          uint32_t firstBits,
+          uint32_t secondBits,
+          uint32_t thirdBits,
+          uint32_t fourthBits>
+inline void Initialize4ComponentData(size_t width,
+                                     size_t height,
+                                     size_t depth,
+                                     uint8_t *output,
+                                     size_t outputRowPitch,
+                                     size_t outputDepthPitch);
+
+void LoadR32ToR24G8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch);
+
+void LoadETC1RGB8ToRGBA8(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadASTCToRGBA8Inner(size_t width,
+                          size_t height,
+                          size_t depth,
+                          uint32_t blockWidth,
+                          uint32_t blockHeight,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+template <size_t blockWidth, size_t blockHeight>
+inline void LoadASTCToRGBA8(size_t width,
+                            size_t height,
+                            size_t depth,
+                            const uint8_t *input,
+                            size_t inputRowPitch,
+                            size_t inputDepthPitch,
+                            uint8_t *output,
+                            size_t outputRowPitch,
+                            size_t outputDepthPitch);
+
+void LoadETC1RGB8ToBC1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadEACR11ToR8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch);
+
+void LoadEACR11SToR8(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch);
+
+void LoadEACRG11ToRG8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadEACRG11SToRG8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadEACR11ToR16(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch);
+
+void LoadEACR11SToR16(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadEACRG11ToRG16(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadEACRG11SToRG16(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadEACR11ToR16F(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch);
+
+void LoadEACR11SToR16F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadEACRG11ToRG16F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadEACRG11SToRG16F(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadETC2RGB8ToRGBA8(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadETC2RGB8ToBC1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch);
+
+void LoadETC2SRGB8ToRGBA8(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadETC2SRGB8ToBC1(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch);
+
+void LoadETC2RGB8A1ToRGBA8(size_t width,
+                           size_t height,
+                           size_t depth,
+                           const uint8_t *input,
+                           size_t inputRowPitch,
+                           size_t inputDepthPitch,
+                           uint8_t *output,
+                           size_t outputRowPitch,
+                           size_t outputDepthPitch);
+
+void LoadETC2RGB8A1ToBC1(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch);
+
+void LoadETC2SRGB8A1ToRGBA8(size_t width,
+                            size_t height,
+                            size_t depth,
+                            const uint8_t *input,
+                            size_t inputRowPitch,
+                            size_t inputDepthPitch,
+                            uint8_t *output,
+                            size_t outputRowPitch,
+                            size_t outputDepthPitch);
+
+void LoadETC2SRGB8A1ToBC1(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadETC2RGBA8ToRGBA8(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch);
+
+void LoadETC2SRGBA8ToSRGBA8(size_t width,
+                            size_t height,
+                            size_t depth,
+                            const uint8_t *input,
+                            size_t inputRowPitch,
+                            size_t inputDepthPitch,
+                            uint8_t *output,
+                            size_t outputRowPitch,
+                            size_t outputDepthPitch);
+
+void LoadYuvToNative(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch);
+
+void LoadPalettedToRGBA8Impl(size_t width,
+                             size_t height,
+                             size_t depth,
+                             uint32_t indexBits,
+                             uint32_t redBlueBits,
+                             uint32_t greenBits,
+                             uint32_t alphaBits,
+                             const uint8_t *input,
+                             size_t inputRowPitch,
+                             size_t inputDepthPitch,
+                             uint8_t *output,
+                             size_t outputRowPitch,
+                             size_t outputDepthPitch);
+
+template <uint32_t indexBits, uint32_t redBlueBits, uint32_t greenBits, uint32_t alphaBits>
+inline void LoadPalettedToRGBA8(size_t width,
+                                size_t height,
+                                size_t depth,
+                                const uint8_t *input,
+                                size_t inputRowPitch,
+                                size_t inputDepthPitch,
+                                uint8_t *output,
+                                size_t outputRowPitch,
+                                size_t outputDepthPitch);
+
+}  // namespace angle
+
+#include "loadimage.inc"
+
+#endif  // IMAGEUTIL_LOADIMAGE_H_
diff --git a/gfx/angle/checkout/src/image_util/loadimage.inc b/gfx/angle/checkout/src/image_util/loadimage.inc
new file mode 100644
index 0000000000..58c0b9faf5
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/loadimage.inc
@@ -0,0 +1,201 @@
+//
+// Copyright 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#include "common/mathutil.h"
+
+#include <string.h>
+
+namespace angle
+{
+
+namespace priv
+{
+
+template <typename T>
+inline T *OffsetDataPointer(uint8_t *data, size_t y, size_t z, size_t rowPitch, size_t depthPitch)
+{
+    return reinterpret_cast<T*>(data + (y * rowPitch) + (z * depthPitch));
+}
+
+template <typename T>
+inline const T *OffsetDataPointer(const uint8_t *data, size_t y, size_t z, size_t rowPitch, size_t depthPitch)
+{
+    return reinterpret_cast<const T*>(data + (y * rowPitch) + (z * depthPitch));
+}
+
+}  // namespace priv
+
+template <typename type, size_t componentCount>
+inline void LoadToNative(size_t width, size_t height, size_t depth,
+                         const uint8_t *input, size_t inputRowPitch, size_t inputDepthPitch,
+                         uint8_t *output, size_t outputRowPitch, size_t outputDepthPitch)
+{
+    const size_t rowSize = width * sizeof(type) * componentCount;
+    const size_t layerSize = rowSize * height;
+    const size_t imageSize = layerSize * depth;
+
+    if (layerSize == inputDepthPitch && layerSize == outputDepthPitch)
+    {
+        ASSERT(rowSize == inputRowPitch && rowSize == outputRowPitch);
+        memcpy(output, input, imageSize);
+    }
+    else if (rowSize == inputRowPitch && rowSize == outputRowPitch)
+    {
+        for (size_t z = 0; z < depth; z++)
+        {
+            const type *source = priv::OffsetDataPointer<type>(input, 0, z, inputRowPitch, inputDepthPitch);
+            type *dest = priv::OffsetDataPointer<type>(output, 0, z, outputRowPitch, outputDepthPitch);
+
+            memcpy(dest, source, layerSize);
+        }
+    }
+    else
+    {
+        for (size_t z = 0; z < depth; z++)
+        {
+            for (size_t y = 0; y < height; y++)
+            {
+                const type *source = priv::OffsetDataPointer<type>(input, y, z, inputRowPitch, inputDepthPitch);
+                type *dest = priv::OffsetDataPointer<type>(output, y, z, outputRowPitch, outputDepthPitch);
+                memcpy(dest, source, width * sizeof(type) * componentCount);
+            }
+        }
+    }
+}
+
+template <typename type, uint32_t fourthComponentBits>
+inline void LoadToNative3To4(size_t width, size_t height, size_t depth,
+                             const uint8_t *input, size_t inputRowPitch, size_t inputDepthPitch,
+                             uint8_t *output, size_t outputRowPitch, size_t outputDepthPitch)
+{
+    const type fourthValue = gl::bitCast<type>(fourthComponentBits);
+
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const type *source = priv::OffsetDataPointer<type>(input, y, z, inputRowPitch, inputDepthPitch);
+            type *dest = priv::OffsetDataPointer<type>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                memcpy(&dest[x * 4], &source[x * 3], sizeof(type) * 3);
+                dest[x * 4 + 3] = fourthValue;
+            }
+        }
+    }
+}
+
+template <size_t componentCount>
+inline void Load32FTo16F(size_t width, size_t height, size_t depth,
+                         const uint8_t *input, size_t inputRowPitch, size_t inputDepthPitch,
+                         uint8_t *output, size_t outputRowPitch, size_t outputDepthPitch)
+{
+    const size_t elementWidth = componentCount * width;
+
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const float *source = priv::OffsetDataPointer<float>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint16_t *dest = priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < elementWidth; x++)
+            {
+                dest[x] = gl::float32ToFloat16(source[x]);
+            }
+        }
+    }
+}
+
+template <size_t blockWidth, size_t blockHeight, size_t blockDepth, size_t blockSize>
+inline void LoadCompressedToNative(size_t width, size_t height, size_t depth,
+                                   const uint8_t *input, size_t inputRowPitch, size_t inputDepthPitch,
+                                   uint8_t *output, size_t outputRowPitch, size_t outputDepthPitch)
+{
+    const size_t columns = (width + (blockWidth - 1)) / blockWidth;
+    const size_t rows = (height + (blockHeight - 1)) / blockHeight;
+    const size_t layers = (depth + (blockDepth - 1)) / blockDepth;
+
+    for (size_t z = 0; z < layers; ++z)
+    {
+        for (size_t y = 0; y < rows; ++y)
+        {
+            const uint8_t *source = priv::OffsetDataPointer<uint8_t>(input, y, z, inputRowPitch, inputDepthPitch);
+            uint8_t *dest = priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+            memcpy(dest, source, columns * blockSize);
+        }
+    }
+}
+
+template <typename type, uint32_t firstBits, uint32_t secondBits, uint32_t thirdBits, uint32_t fourthBits>
+inline void Initialize4ComponentData(size_t width, size_t height, size_t depth,
+                                     uint8_t *output, size_t outputRowPitch, size_t outputDepthPitch)
+{
+    type writeValues[4] =
+    {
+        gl::bitCast<type>(firstBits),
+        gl::bitCast<type>(secondBits),
+        gl::bitCast<type>(thirdBits),
+        gl::bitCast<type>(fourthBits),
+    };
+
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            type *destRow = priv::OffsetDataPointer<type>(output, y, z, outputRowPitch, outputDepthPitch);
+            for (size_t x = 0; x < width; x++)
+            {
+                type* destPixel = destRow + x * 4;
+
+                // This could potentially be optimized by generating an entire row of initialization
+                // data and copying row by row instead of pixel by pixel.
+                memcpy(destPixel, writeValues, sizeof(type) * 4);
+            }
+        }
+    }
+}
+
+template <size_t blockWidth, size_t blockHeight>
+inline void LoadASTCToRGBA8(size_t width,
+                            size_t height,
+                            size_t depth,
+                            const uint8_t *input,
+                            size_t inputRowPitch,
+                            size_t inputDepthPitch,
+                            uint8_t *output,
+                            size_t outputRowPitch,
+                            size_t outputDepthPitch)
+{
+    LoadASTCToRGBA8Inner(width, height, depth, blockWidth, blockHeight, input, inputRowPitch,
+                         inputDepthPitch, output, outputRowPitch, outputDepthPitch);
+}
+
+template <uint32_t indexBits, uint32_t redBlueBits, uint32_t greenBits, uint32_t alphaBits>
+inline void LoadPalettedToRGBA8(size_t width,
+                                size_t height,
+                                size_t depth,
+                                const uint8_t *input,
+                                size_t inputRowPitch,
+                                size_t inputDepthPitch,
+                                uint8_t *output,
+                                size_t outputRowPitch,
+                                size_t outputDepthPitch)
+{
+    static_assert(indexBits == 4 || indexBits == 8);
+    static_assert(redBlueBits == 4 || redBlueBits == 5 || redBlueBits == 8);
+    static_assert(greenBits == 4 || greenBits == 5 || greenBits == 6 || greenBits == 8);
+    static_assert(alphaBits == 0 || alphaBits == 1 || alphaBits == 4 || alphaBits == 8);
+    constexpr uint32_t colorBits = 2 * redBlueBits + greenBits + alphaBits;
+    static_assert(colorBits == 16 || colorBits == 24 || colorBits == 32);
+
+    LoadPalettedToRGBA8Impl(width, height, depth,
+                            indexBits, redBlueBits, greenBits, alphaBits,
+                            input, inputRowPitch, inputDepthPitch,
+                            output, outputRowPitch, outputDepthPitch);
+}
+
+} // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/loadimage_astc.cpp b/gfx/angle/checkout/src/image_util/loadimage_astc.cpp
new file mode 100644
index 0000000000..34fd164322
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/loadimage_astc.cpp
@@ -0,0 +1,84 @@
+//
+// Copyright 2022 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// loadimage_astc.cpp: Decodes ASTC encoded textures.
+
+#ifdef ANGLE_HAS_ASTCENC
+#    include <astcenc.h>
+#endif
+
+#include "image_util/loadimage.h"
+
+namespace angle
+{
+
+void LoadASTCToRGBA8Inner(size_t width,
+                          size_t height,
+                          size_t depth,
+                          uint32_t blockWidth,
+                          uint32_t blockHeight,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+#ifdef ANGLE_HAS_ASTCENC
+    astcenc_config config;
+
+    constexpr unsigned int kBlockZ = 1;
+
+    const float kQuality               = ASTCENC_PRE_MEDIUM;
+    constexpr astcenc_profile kProfile = ASTCENC_PRF_LDR;
+
+    astcenc_error status;
+    status = astcenc_config_init(kProfile, blockWidth, blockHeight, kBlockZ, kQuality,
+                                 ASTCENC_FLG_DECOMPRESS_ONLY, &config);
+    if (status != ASTCENC_SUCCESS)
+    {
+        WARN() << "astcenc config init failed: " << astcenc_get_error_string(status);
+        return;
+    }
+
+    constexpr unsigned int kThreadCount = 1;
+
+    astcenc_context *context;
+    status = astcenc_context_alloc(&config, kThreadCount, &context);
+    if (status != ASTCENC_SUCCESS)
+    {
+        WARN() << "Could not allocate astcenc context: " << astcenc_get_error_string(status);
+        return;
+    }
+
+    // Compute the number of ASTC blocks in each dimension
+    uint32_t blockCountX = (static_cast<uint32_t>(width) + config.block_x - 1) / config.block_x;
+    uint32_t blockCountY = (static_cast<uint32_t>(height) + config.block_y - 1) / config.block_y;
+
+    // Space needed for 16 bytes of output per compressed block
+    size_t blockSize = blockCountX * blockCountY * 16;
+
+    astcenc_image image;
+    image.dim_x     = static_cast<uint32_t>(width);
+    image.dim_y     = static_cast<uint32_t>(height);
+    image.dim_z     = 1;
+    image.data_type = ASTCENC_TYPE_U8;
+    image.data      = reinterpret_cast<void **>(&output);
+
+    constexpr astcenc_swizzle swizzle{ASTCENC_SWZ_R, ASTCENC_SWZ_G, ASTCENC_SWZ_B, ASTCENC_SWZ_A};
+
+    status = astcenc_decompress_image(context, input, blockSize, &image, &swizzle, 0);
+    if (status != ASTCENC_SUCCESS)
+    {
+        WARN() << "astcenc decompress failed: " << astcenc_get_error_string(status);
+    }
+
+    astcenc_context_free(context);
+#else
+    ERR() << "Trying to decode ASTC without having ASTC support built.";
+#endif
+}
+}  // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/loadimage_etc.cpp b/gfx/angle/checkout/src/image_util/loadimage_etc.cpp
new file mode 100644
index 0000000000..5eca88ef04
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/loadimage_etc.cpp
@@ -0,0 +1,1994 @@
+//
+// Copyright 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// loadimage_etc.cpp: Decodes ETC and EAC encoded textures.
+
+#include "image_util/loadimage.h"
+
+#include <type_traits>
+#include "common/mathutil.h"
+
+#include "image_util/imageformats.h"
+
+namespace angle
+{
+namespace
+{
+
+using IntensityModifier = const int[4];
+
+// Table 3.17.2 sorted according to table 3.17.3
+// clang-format off
+static IntensityModifier intensityModifierDefault[] =
+{
+    {  2,   8,  -2,   -8 },
+    {  5,  17,  -5,  -17 },
+    {  9,  29,  -9,  -29 },
+    { 13,  42, -13,  -42 },
+    { 18,  60, -18,  -60 },
+    { 24,  80, -24,  -80 },
+    { 33, 106, -33, -106 },
+    { 47, 183, -47, -183 },
+};
+// clang-format on
+
+// Table C.12, intensity modifier for non opaque punchthrough alpha
+// clang-format off
+static IntensityModifier intensityModifierNonOpaque[] =
+{
+    { 0,   8, 0,   -8 },
+    { 0,  17, 0,  -17 },
+    { 0,  29, 0,  -29 },
+    { 0,  42, 0,  -42 },
+    { 0,  60, 0,  -60 },
+    { 0,  80, 0,  -80 },
+    { 0, 106, 0, -106 },
+    { 0, 183, 0, -183 },
+};
+// clang-format on
+
+static const int kNumPixelsInBlock = 16;
+
+struct ETC2Block
+{
+    // Decodes unsigned single or dual channel ETC2 block to 8-bit color
+    void decodeAsSingleETC2Channel(uint8_t *dest,
+                                   size_t x,
+                                   size_t y,
+                                   size_t w,
+                                   size_t h,
+                                   size_t destPixelStride,
+                                   size_t destRowPitch,
+                                   bool isSigned) const
+    {
+        for (size_t j = 0; j < 4 && (y + j) < h; j++)
+        {
+            uint8_t *row = dest + (j * destRowPitch);
+            for (size_t i = 0; i < 4 && (x + i) < w; i++)
+            {
+                uint8_t *pixel = row + (i * destPixelStride);
+                if (isSigned)
+                {
+                    *pixel = clampSByte(getSingleETC2Channel(i, j, isSigned));
+                }
+                else
+                {
+                    *pixel = clampByte(getSingleETC2Channel(i, j, isSigned));
+                }
+            }
+        }
+    }
+
+    // Decodes unsigned single or dual channel EAC block to 16-bit color
+    void decodeAsSingleEACChannel(uint16_t *dest,
+                                  size_t x,
+                                  size_t y,
+                                  size_t w,
+                                  size_t h,
+                                  size_t destPixelStride,
+                                  size_t destRowPitch,
+                                  bool isSigned,
+                                  bool isFloat) const
+    {
+        for (size_t j = 0; j < 4 && (y + j) < h; j++)
+        {
+            uint16_t *row = reinterpret_cast<uint16_t *>(reinterpret_cast<uint8_t *>(dest) +
+                                                         (j * destRowPitch));
+            for (size_t i = 0; i < 4 && (x + i) < w; i++)
+            {
+                uint16_t *pixel = row + (i * destPixelStride);
+                if (isSigned)
+                {
+                    int16_t tempPixel =
+                        renormalizeEAC<int16_t>(getSingleEACChannel(i, j, isSigned));
+                    *pixel =
+                        isFloat ? gl::float32ToFloat16(float(gl::normalize(tempPixel))) : tempPixel;
+                }
+                else
+                {
+                    uint16_t tempPixel =
+                        renormalizeEAC<uint16_t>(getSingleEACChannel(i, j, isSigned));
+                    *pixel =
+                        isFloat ? gl::float32ToFloat16(float(gl::normalize(tempPixel))) : tempPixel;
+                }
+            }
+        }
+    }
+
+    // Decodes RGB block to rgba8
+    void decodeAsRGB(uint8_t *dest,
+                     size_t x,
+                     size_t y,
+                     size_t w,
+                     size_t h,
+                     size_t destRowPitch,
+                     const uint8_t alphaValues[4][4],
+                     bool punchThroughAlpha) const
+    {
+        bool opaqueBit                  = u.idht.mode.idm.diffbit;
+        bool nonOpaquePunchThroughAlpha = punchThroughAlpha && !opaqueBit;
+        // Select mode
+        if (u.idht.mode.idm.diffbit || punchThroughAlpha)
+        {
+            const auto &block = u.idht.mode.idm.colors.diff;
+            int r             = (block.R + block.dR);
+            int g             = (block.G + block.dG);
+            int b             = (block.B + block.dB);
+            if (r < 0 || r > 31)
+            {
+                decodeTBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+                             nonOpaquePunchThroughAlpha);
+            }
+            else if (g < 0 || g > 31)
+            {
+                decodeHBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+                             nonOpaquePunchThroughAlpha);
+            }
+            else if (b < 0 || b > 31)
+            {
+                decodePlanarBlock(dest, x, y, w, h, destRowPitch, alphaValues);
+            }
+            else
+            {
+                decodeDifferentialBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+                                        nonOpaquePunchThroughAlpha);
+            }
+        }
+        else
+        {
+            decodeIndividualBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+                                  nonOpaquePunchThroughAlpha);
+        }
+    }
+
+    // Transcodes RGB block to BC1
+    void transcodeAsBC1(uint8_t *dest,
+                        size_t x,
+                        size_t y,
+                        size_t w,
+                        size_t h,
+                        const uint8_t alphaValues[4][4],
+                        bool punchThroughAlpha) const
+    {
+        bool opaqueBit                  = u.idht.mode.idm.diffbit;
+        bool nonOpaquePunchThroughAlpha = punchThroughAlpha && !opaqueBit;
+        // Select mode
+        if (u.idht.mode.idm.diffbit || punchThroughAlpha)
+        {
+            const auto &block = u.idht.mode.idm.colors.diff;
+            int r             = (block.R + block.dR);
+            int g             = (block.G + block.dG);
+            int b             = (block.B + block.dB);
+            if (r < 0 || r > 31)
+            {
+                transcodeTBlockToBC1(dest, x, y, w, h, alphaValues, nonOpaquePunchThroughAlpha);
+            }
+            else if (g < 0 || g > 31)
+            {
+                transcodeHBlockToBC1(dest, x, y, w, h, alphaValues, nonOpaquePunchThroughAlpha);
+            }
+            else if (b < 0 || b > 31)
+            {
+                transcodePlanarBlockToBC1(dest, x, y, w, h, alphaValues);
+            }
+            else
+            {
+                transcodeDifferentialBlockToBC1(dest, x, y, w, h, alphaValues,
+                                                nonOpaquePunchThroughAlpha);
+            }
+        }
+        else
+        {
+            transcodeIndividualBlockToBC1(dest, x, y, w, h, alphaValues,
+                                          nonOpaquePunchThroughAlpha);
+        }
+    }
+
+  private:
+    union
+    {
+        // Individual, differential, H and T modes
+        struct
+        {
+            union
+            {
+                // Individual and differential modes
+                struct
+                {
+                    union
+                    {
+                        struct  // Individual colors
+                        {
+                            unsigned char R2 : 4;
+                            unsigned char R1 : 4;
+                            unsigned char G2 : 4;
+                            unsigned char G1 : 4;
+                            unsigned char B2 : 4;
+                            unsigned char B1 : 4;
+                        } indiv;
+                        struct  // Differential colors
+                        {
+                            signed char dR : 3;
+                            unsigned char R : 5;
+                            signed char dG : 3;
+                            unsigned char G : 5;
+                            signed char dB : 3;
+                            unsigned char B : 5;
+                        } diff;
+                    } colors;
+                    bool flipbit : 1;
+                    bool diffbit : 1;
+                    unsigned char cw2 : 3;
+                    unsigned char cw1 : 3;
+                } idm;
+                // T mode
+                struct
+                {
+                    // Byte 1
+                    unsigned char TR1b : 2;
+                    unsigned char TunusedB : 1;
+                    unsigned char TR1a : 2;
+                    unsigned char TunusedA : 3;
+                    // Byte 2
+                    unsigned char TB1 : 4;
+                    unsigned char TG1 : 4;
+                    // Byte 3
+                    unsigned char TG2 : 4;
+                    unsigned char TR2 : 4;
+                    // Byte 4
+                    unsigned char Tdb : 1;
+                    bool Tflipbit : 1;
+                    unsigned char Tda : 2;
+                    unsigned char TB2 : 4;
+                } tm;
+                // H mode
+                struct
+                {
+                    // Byte 1
+                    unsigned char HG1a : 3;
+                    unsigned char HR1 : 4;
+                    unsigned char HunusedA : 1;
+                    // Byte 2
+                    unsigned char HB1b : 2;
+                    unsigned char HunusedC : 1;
+                    unsigned char HB1a : 1;
+                    unsigned char HG1b : 1;
+                    unsigned char HunusedB : 3;
+                    // Byte 3
+                    unsigned char HG2a : 3;
+                    unsigned char HR2 : 4;
+                    unsigned char HB1c : 1;
+                    // Byte 4
+                    unsigned char Hdb : 1;
+                    bool Hflipbit : 1;
+                    unsigned char Hda : 1;
+                    unsigned char HB2 : 4;
+                    unsigned char HG2b : 1;
+                } hm;
+            } mode;
+            unsigned char pixelIndexMSB[2];
+            unsigned char pixelIndexLSB[2];
+        } idht;
+        // planar mode
+        struct
+        {
+            // Byte 1
+            unsigned char GO1 : 1;
+            unsigned char RO : 6;
+            unsigned char PunusedA : 1;
+            // Byte 2
+            unsigned char BO1 : 1;
+            unsigned char GO2 : 6;
+            unsigned char PunusedB : 1;
+            // Byte 3
+            unsigned char BO3a : 2;
+            unsigned char PunusedD : 1;
+            unsigned char BO2 : 2;
+            unsigned char PunusedC : 3;
+            // Byte 4
+            unsigned char RH2 : 1;
+            bool Pflipbit : 1;
+            unsigned char RH1 : 5;
+            unsigned char BO3b : 1;
+            // Byte 5
+            unsigned char BHa : 1;
+            unsigned char GH : 7;
+            // Byte 6
+            unsigned char RVa : 3;
+            unsigned char BHb : 5;
+            // Byte 7
+            unsigned char GVa : 5;
+            unsigned char RVb : 3;
+            // Byte 8
+            unsigned char BV : 6;
+            unsigned char GVb : 2;
+        } pblk;
+        // Single channel block
+        struct
+        {
+            union
+            {
+                unsigned char us;
+                signed char s;
+            } base_codeword;
+            unsigned char table_index : 4;
+            unsigned char multiplier : 4;
+            unsigned char mc1 : 2;
+            unsigned char mb : 3;
+            unsigned char ma : 3;
+            unsigned char mf1 : 1;
+            unsigned char me : 3;
+            unsigned char md : 3;
+            unsigned char mc2 : 1;
+            unsigned char mh : 3;
+            unsigned char mg : 3;
+            unsigned char mf2 : 2;
+            unsigned char mk1 : 2;
+            unsigned char mj : 3;
+            unsigned char mi : 3;
+            unsigned char mn1 : 1;
+            unsigned char mm : 3;
+            unsigned char ml : 3;
+            unsigned char mk2 : 1;
+            unsigned char mp : 3;
+            unsigned char mo : 3;
+            unsigned char mn2 : 2;
+        } scblk;
+    } u;
+
+    static unsigned char clampByte(int value)
+    {
+        return static_cast<unsigned char>(gl::clamp(value, 0, 255));
+    }
+
+    static signed char clampSByte(int value)
+    {
+        return static_cast<signed char>(gl::clamp(value, -128, 127));
+    }
+
+    template <typename T>
+    static T renormalizeEAC(int value)
+    {
+        int upper = 0;
+        int lower = 0;
+        int shift = 0;
+
+        if (std::is_same<T, int16_t>::value)
+        {
+            // The spec states that -1024 invalid and should be clamped to -1023
+            upper = 1023;
+            lower = -1023;
+            shift = 5;
+        }
+        else if (std::is_same<T, uint16_t>::value)
+        {
+            upper = 2047;
+            lower = 0;
+            shift = 5;
+        }
+        else
+        {
+            // We currently only support renormalizing int16_t or uint16_t
+            UNREACHABLE();
+        }
+
+        return static_cast<T>(gl::clamp(value, lower, upper)) << shift;
+    }
+
+    static R8G8B8A8 createRGBA(int red, int green, int blue, int alpha)
+    {
+        R8G8B8A8 rgba;
+        rgba.R = clampByte(red);
+        rgba.G = clampByte(green);
+        rgba.B = clampByte(blue);
+        rgba.A = clampByte(alpha);
+        return rgba;
+    }
+
+    static R8G8B8A8 createRGBA(int red, int green, int blue)
+    {
+        return createRGBA(red, green, blue, 255);
+    }
+
+    static int extend_4to8bits(int x) { return (x << 4) | x; }
+    static int extend_5to8bits(int x) { return (x << 3) | (x >> 2); }
+    static int extend_6to8bits(int x) { return (x << 2) | (x >> 4); }
+    static int extend_7to8bits(int x) { return (x << 1) | (x >> 6); }
+
+    void decodeIndividualBlock(uint8_t *dest,
+                               size_t x,
+                               size_t y,
+                               size_t w,
+                               size_t h,
+                               size_t destRowPitch,
+                               const uint8_t alphaValues[4][4],
+                               bool nonOpaquePunchThroughAlpha) const
+    {
+        const auto &block = u.idht.mode.idm.colors.indiv;
+        int r1            = extend_4to8bits(block.R1);
+        int g1            = extend_4to8bits(block.G1);
+        int b1            = extend_4to8bits(block.B1);
+        int r2            = extend_4to8bits(block.R2);
+        int g2            = extend_4to8bits(block.G2);
+        int b2            = extend_4to8bits(block.B2);
+        decodeIndividualOrDifferentialBlock(dest, x, y, w, h, destRowPitch, r1, g1, b1, r2, g2, b2,
+                                            alphaValues, nonOpaquePunchThroughAlpha);
+    }
+
+    void decodeDifferentialBlock(uint8_t *dest,
+                                 size_t x,
+                                 size_t y,
+                                 size_t w,
+                                 size_t h,
+                                 size_t destRowPitch,
+                                 const uint8_t alphaValues[4][4],
+                                 bool nonOpaquePunchThroughAlpha) const
+    {
+        const auto &block = u.idht.mode.idm.colors.diff;
+        int b1            = extend_5to8bits(block.B);
+        int g1            = extend_5to8bits(block.G);
+        int r1            = extend_5to8bits(block.R);
+        int r2            = extend_5to8bits(block.R + block.dR);
+        int g2            = extend_5to8bits(block.G + block.dG);
+        int b2            = extend_5to8bits(block.B + block.dB);
+        decodeIndividualOrDifferentialBlock(dest, x, y, w, h, destRowPitch, r1, g1, b1, r2, g2, b2,
+                                            alphaValues, nonOpaquePunchThroughAlpha);
+    }
+
+    void decodeIndividualOrDifferentialBlock(uint8_t *dest,
+                                             size_t x,
+                                             size_t y,
+                                             size_t w,
+                                             size_t h,
+                                             size_t destRowPitch,
+                                             int r1,
+                                             int g1,
+                                             int b1,
+                                             int r2,
+                                             int g2,
+                                             int b2,
+                                             const uint8_t alphaValues[4][4],
+                                             bool nonOpaquePunchThroughAlpha) const
+    {
+        const IntensityModifier *intensityModifier =
+            nonOpaquePunchThroughAlpha ? intensityModifierNonOpaque : intensityModifierDefault;
+
+        R8G8B8A8 subblockColors0[4];
+        R8G8B8A8 subblockColors1[4];
+        for (size_t modifierIdx = 0; modifierIdx < 4; modifierIdx++)
+        {
+            const int i1                 = intensityModifier[u.idht.mode.idm.cw1][modifierIdx];
+            subblockColors0[modifierIdx] = createRGBA(r1 + i1, g1 + i1, b1 + i1);
+
+            const int i2                 = intensityModifier[u.idht.mode.idm.cw2][modifierIdx];
+            subblockColors1[modifierIdx] = createRGBA(r2 + i2, g2 + i2, b2 + i2);
+        }
+
+        if (u.idht.mode.idm.flipbit)
+        {
+            uint8_t *curPixel = dest;
+            for (size_t j = 0; j < 2 && (y + j) < h; j++)
+            {
+                R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+                for (size_t i = 0; i < 4 && (x + i) < w; i++)
+                {
+                    row[i]   = subblockColors0[getIndex(i, j)];
+                    row[i].A = alphaValues[j][i];
+                }
+                curPixel += destRowPitch;
+            }
+            for (size_t j = 2; j < 4 && (y + j) < h; j++)
+            {
+                R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+                for (size_t i = 0; i < 4 && (x + i) < w; i++)
+                {
+                    row[i]   = subblockColors1[getIndex(i, j)];
+                    row[i].A = alphaValues[j][i];
+                }
+                curPixel += destRowPitch;
+            }
+        }
+        else
+        {
+            uint8_t *curPixel = dest;
+            for (size_t j = 0; j < 4 && (y + j) < h; j++)
+            {
+                R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+                for (size_t i = 0; i < 2 && (x + i) < w; i++)
+                {
+                    row[i]   = subblockColors0[getIndex(i, j)];
+                    row[i].A = alphaValues[j][i];
+                }
+                for (size_t i = 2; i < 4 && (x + i) < w; i++)
+                {
+                    row[i]   = subblockColors1[getIndex(i, j)];
+                    row[i].A = alphaValues[j][i];
+                }
+                curPixel += destRowPitch;
+            }
+        }
+        if (nonOpaquePunchThroughAlpha)
+        {
+            decodePunchThroughAlphaBlock(dest, x, y, w, h, destRowPitch);
+        }
+    }
+
+    void decodeTBlock(uint8_t *dest,
+                      size_t x,
+                      size_t y,
+                      size_t w,
+                      size_t h,
+                      size_t destRowPitch,
+                      const uint8_t alphaValues[4][4],
+                      bool nonOpaquePunchThroughAlpha) const
+    {
+        // Table C.8, distance index for T and H modes
+        const auto &block = u.idht.mode.tm;
+
+        int r1 = extend_4to8bits(block.TR1a << 2 | block.TR1b);
+        int g1 = extend_4to8bits(block.TG1);
+        int b1 = extend_4to8bits(block.TB1);
+        int r2 = extend_4to8bits(block.TR2);
+        int g2 = extend_4to8bits(block.TG2);
+        int b2 = extend_4to8bits(block.TB2);
+
+        static int distance[8] = {3, 6, 11, 16, 23, 32, 41, 64};
+        const int d            = distance[block.Tda << 1 | block.Tdb];
+
+        const R8G8B8A8 paintColors[4] = {
+            createRGBA(r1, g1, b1),
+            createRGBA(r2 + d, g2 + d, b2 + d),
+            createRGBA(r2, g2, b2),
+            createRGBA(r2 - d, g2 - d, b2 - d),
+        };
+
+        uint8_t *curPixel = dest;
+        for (size_t j = 0; j < 4 && (y + j) < h; j++)
+        {
+            R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+            for (size_t i = 0; i < 4 && (x + i) < w; i++)
+            {
+                row[i]   = paintColors[getIndex(i, j)];
+                row[i].A = alphaValues[j][i];
+            }
+            curPixel += destRowPitch;
+        }
+
+        if (nonOpaquePunchThroughAlpha)
+        {
+            decodePunchThroughAlphaBlock(dest, x, y, w, h, destRowPitch);
+        }
+    }
+
+    void decodeHBlock(uint8_t *dest,
+                      size_t x,
+                      size_t y,
+                      size_t w,
+                      size_t h,
+                      size_t destRowPitch,
+                      const uint8_t alphaValues[4][4],
+                      bool nonOpaquePunchThroughAlpha) const
+    {
+        // Table C.8, distance index for T and H modes
+        const auto &block = u.idht.mode.hm;
+
+        int r1 = extend_4to8bits(block.HR1);
+        int g1 = extend_4to8bits(block.HG1a << 1 | block.HG1b);
+        int b1 = extend_4to8bits(block.HB1a << 3 | block.HB1b << 1 | block.HB1c);
+        int r2 = extend_4to8bits(block.HR2);
+        int g2 = extend_4to8bits(block.HG2a << 1 | block.HG2b);
+        int b2 = extend_4to8bits(block.HB2);
+
+        static const int distance[8] = {3, 6, 11, 16, 23, 32, 41, 64};
+        const int orderingTrickBit =
+            ((r1 << 16 | g1 << 8 | b1) >= (r2 << 16 | g2 << 8 | b2) ? 1 : 0);
+        const int d = distance[(block.Hda << 2) | (block.Hdb << 1) | orderingTrickBit];
+
+        const R8G8B8A8 paintColors[4] = {
+            createRGBA(r1 + d, g1 + d, b1 + d),
+            createRGBA(r1 - d, g1 - d, b1 - d),
+            createRGBA(r2 + d, g2 + d, b2 + d),
+            createRGBA(r2 - d, g2 - d, b2 - d),
+        };
+
+        uint8_t *curPixel = dest;
+        for (size_t j = 0; j < 4 && (y + j) < h; j++)
+        {
+            R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+            for (size_t i = 0; i < 4 && (x + i) < w; i++)
+            {
+                row[i]   = paintColors[getIndex(i, j)];
+                row[i].A = alphaValues[j][i];
+            }
+            curPixel += destRowPitch;
+        }
+
+        if (nonOpaquePunchThroughAlpha)
+        {
+            decodePunchThroughAlphaBlock(dest, x, y, w, h, destRowPitch);
+        }
+    }
+
+    void decodePlanarBlock(uint8_t *dest,
+                           size_t x,
+                           size_t y,
+                           size_t w,
+                           size_t h,
+                           size_t pitch,
+                           const uint8_t alphaValues[4][4]) const
+    {
+        int ro = extend_6to8bits(u.pblk.RO);
+        int go = extend_7to8bits(u.pblk.GO1 << 6 | u.pblk.GO2);
+        int bo =
+            extend_6to8bits(u.pblk.BO1 << 5 | u.pblk.BO2 << 3 | u.pblk.BO3a << 1 | u.pblk.BO3b);
+        int rh = extend_6to8bits(u.pblk.RH1 << 1 | u.pblk.RH2);
+        int gh = extend_7to8bits(u.pblk.GH);
+        int bh = extend_6to8bits(u.pblk.BHa << 5 | u.pblk.BHb);
+        int rv = extend_6to8bits(u.pblk.RVa << 3 | u.pblk.RVb);
+        int gv = extend_7to8bits(u.pblk.GVa << 2 | u.pblk.GVb);
+        int bv = extend_6to8bits(u.pblk.BV);
+
+        uint8_t *curPixel = dest;
+        for (size_t j = 0; j < 4 && (y + j) < h; j++)
+        {
+            R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+
+            int ry = static_cast<int>(j) * (rv - ro) + 2;
+            int gy = static_cast<int>(j) * (gv - go) + 2;
+            int by = static_cast<int>(j) * (bv - bo) + 2;
+            for (size_t i = 0; i < 4 && (x + i) < w; i++)
+            {
+                row[i] = createRGBA(((static_cast<int>(i) * (rh - ro) + ry) >> 2) + ro,
+                                    ((static_cast<int>(i) * (gh - go) + gy) >> 2) + go,
+                                    ((static_cast<int>(i) * (bh - bo) + by) >> 2) + bo,
+                                    alphaValues[j][i]);
+            }
+            curPixel += pitch;
+        }
+    }
+
+    // Index for individual, differential, H and T modes
+    size_t getIndex(size_t x, size_t y) const
+    {
+        size_t bitIndex  = x * 4 + y;
+        size_t bitOffset = bitIndex & 7;
+        size_t lsb       = (u.idht.pixelIndexLSB[1 - (bitIndex >> 3)] >> bitOffset) & 1;
+        size_t msb       = (u.idht.pixelIndexMSB[1 - (bitIndex >> 3)] >> bitOffset) & 1;
+        return (msb << 1) | lsb;
+    }
+
+    void decodePunchThroughAlphaBlock(uint8_t *dest,
+                                      size_t x,
+                                      size_t y,
+                                      size_t w,
+                                      size_t h,
+                                      size_t destRowPitch) const
+    {
+        uint8_t *curPixel = dest;
+        for (size_t j = 0; j < 4 && (y + j) < h; j++)
+        {
+            R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+            for (size_t i = 0; i < 4 && (x + i) < w; i++)
+            {
+                if (getIndex(i, j) == 2)  //  msb == 1 && lsb == 0
+                {
+                    row[i] = createRGBA(0, 0, 0, 0);
+                }
+            }
+            curPixel += destRowPitch;
+        }
+    }
+
+    uint16_t RGB8ToRGB565(const R8G8B8A8 &rgba) const
+    {
+        return (static_cast<uint16_t>(rgba.R >> 3) << 11) |
+               (static_cast<uint16_t>(rgba.G >> 2) << 5) |
+               (static_cast<uint16_t>(rgba.B >> 3) << 0);
+    }
+
+    uint32_t matchBC1Bits(const int *pixelIndices,
+                          const int *pixelIndexCounts,
+                          const R8G8B8A8 *subblockColors,
+                          size_t numColors,
+                          const R8G8B8A8 &minColor,
+                          const R8G8B8A8 &maxColor,
+                          bool nonOpaquePunchThroughAlpha) const
+    {
+        // Project each pixel on the (maxColor, minColor) line to decide which
+        // BC1 code to assign to it.
+
+        uint8_t decodedColors[2][3] = {{maxColor.R, maxColor.G, maxColor.B},
+                                       {minColor.R, minColor.G, minColor.B}};
+
+        int direction[3];
+        for (int ch = 0; ch < 3; ch++)
+        {
+            direction[ch] = decodedColors[0][ch] - decodedColors[1][ch];
+        }
+
+        int stops[2];
+        for (int i = 0; i < 2; i++)
+        {
+            stops[i] = decodedColors[i][0] * direction[0] + decodedColors[i][1] * direction[1] +
+                       decodedColors[i][2] * direction[2];
+        }
+
+        ASSERT(numColors <= kNumPixelsInBlock);
+
+        int encodedColors[kNumPixelsInBlock];
+        if (nonOpaquePunchThroughAlpha)
+        {
+            for (size_t i = 0; i < numColors; i++)
+            {
+                const int count = pixelIndexCounts[i];
+                if (count > 0)
+                {
+                    // In non-opaque mode, 3 is for tranparent pixels.
+
+                    if (0 == subblockColors[i].A)
+                    {
+                        encodedColors[i] = 3;
+                    }
+                    else
+                    {
+                        const R8G8B8A8 &pixel = subblockColors[i];
+                        const int dot         = pixel.R * direction[0] + pixel.G * direction[1] +
+                                        pixel.B * direction[2];
+                        const int factor = gl::clamp(
+                            static_cast<int>(
+                                (static_cast<float>(dot - stops[1]) / (stops[0] - stops[1])) * 2 +
+                                0.5f),
+                            0, 2);
+                        switch (factor)
+                        {
+                            case 0:
+                                encodedColors[i] = 0;
+                                break;
+                            case 1:
+                                encodedColors[i] = 2;
+                                break;
+                            case 2:
+                            default:
+                                encodedColors[i] = 1;
+                                break;
+                        }
+                    }
+                }
+            }
+        }
+        else
+        {
+            for (size_t i = 0; i < numColors; i++)
+            {
+                const int count = pixelIndexCounts[i];
+                if (count > 0)
+                {
+                    // In opaque mode, the code is from 0 to 3.
+
+                    const R8G8B8A8 &pixel = subblockColors[i];
+                    const int dot =
+                        pixel.R * direction[0] + pixel.G * direction[1] + pixel.B * direction[2];
+                    const int factor = gl::clamp(
+                        static_cast<int>(
+                            (static_cast<float>(dot - stops[1]) / (stops[0] - stops[1])) * 3 +
+                            0.5f),
+                        0, 3);
+                    switch (factor)
+                    {
+                        case 0:
+                            encodedColors[i] = 1;
+                            break;
+                        case 1:
+                            encodedColors[i] = 3;
+                            break;
+                        case 2:
+                            encodedColors[i] = 2;
+                            break;
+                        case 3:
+                        default:
+                            encodedColors[i] = 0;
+                            break;
+                    }
+                }
+            }
+        }
+
+        uint32_t bits = 0;
+        for (int i = kNumPixelsInBlock - 1; i >= 0; i--)
+        {
+            bits <<= 2;
+            bits |= encodedColors[pixelIndices[i]];
+        }
+
+        return bits;
+    }
+
+    void packBC1(void *bc1,
+                 const int *pixelIndices,
+                 const int *pixelIndexCounts,
+                 const R8G8B8A8 *subblockColors,
+                 size_t numColors,
+                 int minColorIndex,
+                 int maxColorIndex,
+                 bool nonOpaquePunchThroughAlpha) const
+    {
+        const R8G8B8A8 &minColor = subblockColors[minColorIndex];
+        const R8G8B8A8 &maxColor = subblockColors[maxColorIndex];
+
+        uint32_t bits;
+        uint16_t max16 = RGB8ToRGB565(maxColor);
+        uint16_t min16 = RGB8ToRGB565(minColor);
+        if (max16 != min16)
+        {
+            // Find the best BC1 code for each pixel
+            bits = matchBC1Bits(pixelIndices, pixelIndexCounts, subblockColors, numColors, minColor,
+                                maxColor, nonOpaquePunchThroughAlpha);
+        }
+        else
+        {
+            // Same colors, BC1 index 0 is the color in both opaque and transparent mode
+            bits = 0;
+            // BC1 index 3 is transparent
+            if (nonOpaquePunchThroughAlpha)
+            {
+                for (int i = 0; i < kNumPixelsInBlock; i++)
+                {
+                    if (0 == subblockColors[pixelIndices[i]].A)
+                    {
+                        bits |= (3 << (i * 2));
+                    }
+                }
+            }
+        }
+
+        if (max16 < min16)
+        {
+            std::swap(max16, min16);
+
+            uint32_t xorMask = 0;
+            if (nonOpaquePunchThroughAlpha)
+            {
+                // In transparent mode switching the colors is doing the
+                // following code swap: 0 <-> 1. 0xA selects the second bit of
+                // each code, bits >> 1 selects the first bit of the code when
+                // the seconds bit is set (case 2 and 3). We invert all the
+                // non-selected bits, that is the first bit when the code is
+                // 0 or 1.
+                xorMask = ~((bits >> 1) | 0xAAAAAAAA);
+            }
+            else
+            {
+                // In opaque mode switching the two colors is doing the
+                // following code swaps: 0 <-> 1 and 2 <-> 3. This is
+                // equivalent to flipping the first bit of each code
+                // (5 = 0b0101)
+                xorMask = 0x55555555;
+            }
+            bits ^= xorMask;
+        }
+
+        struct BC1Block
+        {
+            uint16_t color0;
+            uint16_t color1;
+            uint32_t bits;
+        };
+
+        // Encode the opaqueness in the order of the two BC1 colors
+        BC1Block *dest = reinterpret_cast<BC1Block *>(bc1);
+        if (nonOpaquePunchThroughAlpha)
+        {
+            dest->color0 = min16;
+            dest->color1 = max16;
+        }
+        else
+        {
+            dest->color0 = max16;
+            dest->color1 = min16;
+        }
+        dest->bits = bits;
+    }
+
+    void transcodeIndividualBlockToBC1(uint8_t *dest,
+                                       size_t x,
+                                       size_t y,
+                                       size_t w,
+                                       size_t h,
+                                       const uint8_t alphaValues[4][4],
+                                       bool nonOpaquePunchThroughAlpha) const
+    {
+        const auto &block = u.idht.mode.idm.colors.indiv;
+        int r1            = extend_4to8bits(block.R1);
+        int g1            = extend_4to8bits(block.G1);
+        int b1            = extend_4to8bits(block.B1);
+        int r2            = extend_4to8bits(block.R2);
+        int g2            = extend_4to8bits(block.G2);
+        int b2            = extend_4to8bits(block.B2);
+        transcodeIndividualOrDifferentialBlockToBC1(dest, x, y, w, h, r1, g1, b1, r2, g2, b2,
+                                                    alphaValues, nonOpaquePunchThroughAlpha);
+    }
+
+    void transcodeDifferentialBlockToBC1(uint8_t *dest,
+                                         size_t x,
+                                         size_t y,
+                                         size_t w,
+                                         size_t h,
+                                         const uint8_t alphaValues[4][4],
+                                         bool nonOpaquePunchThroughAlpha) const
+    {
+        const auto &block = u.idht.mode.idm.colors.diff;
+        int b1            = extend_5to8bits(block.B);
+        int g1            = extend_5to8bits(block.G);
+        int r1            = extend_5to8bits(block.R);
+        int r2            = extend_5to8bits(block.R + block.dR);
+        int g2            = extend_5to8bits(block.G + block.dG);
+        int b2            = extend_5to8bits(block.B + block.dB);
+        transcodeIndividualOrDifferentialBlockToBC1(dest, x, y, w, h, r1, g1, b1, r2, g2, b2,
+                                                    alphaValues, nonOpaquePunchThroughAlpha);
+    }
+
+    void extractPixelIndices(int *pixelIndices,
+                             int *pixelIndicesCounts,
+                             size_t x,
+                             size_t y,
+                             size_t w,
+                             size_t h,
+                             bool flipbit,
+                             size_t subblockIdx) const
+    {
+        size_t dxBegin = 0;
+        size_t dxEnd   = 4;
+        size_t dyBegin = subblockIdx * 2;
+        size_t dyEnd   = dyBegin + 2;
+        if (!flipbit)
+        {
+            std::swap(dxBegin, dyBegin);
+            std::swap(dxEnd, dyEnd);
+        }
+
+        for (size_t j = dyBegin; j < dyEnd; j++)
+        {
+            int *row = &pixelIndices[j * 4];
+            for (size_t i = dxBegin; i < dxEnd; i++)
+            {
+                const size_t pixelIndex = subblockIdx * 4 + getIndex(i, j);
+                row[i]                  = static_cast<int>(pixelIndex);
+                pixelIndicesCounts[pixelIndex]++;
+            }
+        }
+    }
+
+    void selectEndPointPCA(const int *pixelIndexCounts,
+                           const R8G8B8A8 *subblockColors,
+                           size_t numColors,
+                           int *minColorIndex,
+                           int *maxColorIndex) const
+    {
+        // determine color distribution
+        int mu[3], min[3], max[3];
+        for (int ch = 0; ch < 3; ch++)
+        {
+            int muv  = 0;
+            int minv = 255;
+            int maxv = 0;
+            for (size_t i = 0; i < numColors; i++)
+            {
+                const int count = pixelIndexCounts[i];
+                if (count > 0)
+                {
+                    const auto &pixel = subblockColors[i];
+                    if (pixel.A > 0)
+                    {
+                        // Non-transparent pixels
+                        muv += (&pixel.R)[ch] * count;
+                        minv = std::min<int>(minv, (&pixel.R)[ch]);
+                        maxv = std::max<int>(maxv, (&pixel.R)[ch]);
+                    }
+                }
+            }
+
+            mu[ch]  = (muv + kNumPixelsInBlock / 2) / kNumPixelsInBlock;
+            min[ch] = minv;
+            max[ch] = maxv;
+        }
+
+        // determine covariance matrix
+        int cov[6] = {0, 0, 0, 0, 0, 0};
+        for (size_t i = 0; i < numColors; i++)
+        {
+            const int count = pixelIndexCounts[i];
+            if (count > 0)
+            {
+                const auto &pixel = subblockColors[i];
+                if (pixel.A > 0)
+                {
+                    int r = pixel.R - mu[0];
+                    int g = pixel.G - mu[1];
+                    int b = pixel.B - mu[2];
+
+                    cov[0] += r * r * count;
+                    cov[1] += r * g * count;
+                    cov[2] += r * b * count;
+                    cov[3] += g * g * count;
+                    cov[4] += g * b * count;
+                    cov[5] += b * b * count;
+                }
+            }
+        }
+
+        // Power iteration algorithm to get the eigenvalues and eigenvector
+
+        // Starts with diagonal vector
+        float vfr        = static_cast<float>(max[0] - min[0]);
+        float vfg        = static_cast<float>(max[1] - min[1]);
+        float vfb        = static_cast<float>(max[2] - min[2]);
+        float eigenvalue = 0.0f;
+
+        constexpr size_t kPowerIterations = 4;
+        for (size_t i = 0; i < kPowerIterations; i++)
+        {
+            float r = vfr * cov[0] + vfg * cov[1] + vfb * cov[2];
+            float g = vfr * cov[1] + vfg * cov[3] + vfb * cov[4];
+            float b = vfr * cov[2] + vfg * cov[4] + vfb * cov[5];
+
+            vfr = r;
+            vfg = g;
+            vfb = b;
+
+            eigenvalue = sqrt(r * r + g * g + b * b);
+            if (eigenvalue > 0)
+            {
+                float invNorm = 1.0f / eigenvalue;
+                vfr *= invNorm;
+                vfg *= invNorm;
+                vfb *= invNorm;
+            }
+        }
+
+        int vr, vg, vb;
+
+        static const float kDefaultLuminanceThreshold = 4.0f * 255;
+        static const float kQuantizeRange             = 512.0f;
+        if (eigenvalue < kDefaultLuminanceThreshold)  // too small, default to luminance
+        {
+            // Luminance weights defined by ITU-R Recommendation BT.601, scaled by 1000
+            vr = 299;
+            vg = 587;
+            vb = 114;
+        }
+        else
+        {
+            // From the eigenvalue and eigenvector, choose the axis to project
+            // colors on. When projecting colors we want to do integer computations
+            // for speed, so we normalize the eigenvector to the [0, 512] range.
+            float magn = std::max(std::max(std::abs(vfr), std::abs(vfg)), std::abs(vfb));
+            magn       = kQuantizeRange / magn;
+            vr         = static_cast<int>(vfr * magn);
+            vg         = static_cast<int>(vfg * magn);
+            vb         = static_cast<int>(vfb * magn);
+        }
+
+        // Pick colors at extreme points
+        int minD        = INT_MAX;
+        int maxD        = 0;
+        size_t minIndex = 0;
+        size_t maxIndex = 0;
+        for (size_t i = 0; i < numColors; i++)
+        {
+            const int count = pixelIndexCounts[i];
+            if (count > 0)
+            {
+                const auto &pixel = subblockColors[i];
+                if (pixel.A > 0)
+                {
+                    int dot = pixel.R * vr + pixel.G * vg + pixel.B * vb;
+                    if (dot < minD)
+                    {
+                        minD     = dot;
+                        minIndex = i;
+                    }
+                    if (dot > maxD)
+                    {
+                        maxD     = dot;
+                        maxIndex = i;
+                    }
+                }
+            }
+        }
+
+        *minColorIndex = static_cast<int>(minIndex);
+        *maxColorIndex = static_cast<int>(maxIndex);
+    }
+
+    void transcodeIndividualOrDifferentialBlockToBC1(uint8_t *dest,
+                                                     size_t x,
+                                                     size_t y,
+                                                     size_t w,
+                                                     size_t h,
+                                                     int r1,
+                                                     int g1,
+                                                     int b1,
+                                                     int r2,
+                                                     int g2,
+                                                     int b2,
+                                                     const uint8_t alphaValues[4][4],
+                                                     bool nonOpaquePunchThroughAlpha) const
+    {
+        // A BC1 block has 2 endpoints, pixels is encoded as linear
+        // interpolations of them. A ETC1/ETC2 individual or differential block
+        // has 2 subblocks. Each subblock has one color and a modifier. We
+        // select axis by principal component analysis (PCA) to use as
+        // our two BC1 endpoints and then map pixels to BC1 by projecting on the
+        // line between the two endpoints and choosing the right fraction.
+
+        // The goal of this algorithm is make it faster than decode ETC to RGBs
+        //   and then encode to BC. To achieve this, we only extract subblock
+        //   colors, pixel indices, and counts of each pixel indices from ETC.
+        //   With those information, we can only encode used subblock colors
+        //   to BC1, and copy the bits to the right pixels.
+        // Fully decode and encode need to process 16 RGBA pixels. With this
+        //   algorithm, it's 8 pixels at maximum for a individual or
+        //   differential block. Saves us bandwidth and computations.
+
+        static const size_t kNumColors = 8;
+
+        const IntensityModifier *intensityModifier =
+            nonOpaquePunchThroughAlpha ? intensityModifierNonOpaque : intensityModifierDefault;
+
+        // Compute the colors that pixels can have in each subblock both for
+        // the decoding of the RGBA data and BC1 encoding
+        R8G8B8A8 subblockColors[kNumColors];
+        for (size_t modifierIdx = 0; modifierIdx < 4; modifierIdx++)
+        {
+            if (nonOpaquePunchThroughAlpha && (modifierIdx == 2))
+            {
+                // In ETC opaque punch through formats, individual and
+                // differential blocks take index 2 as transparent pixel.
+                // Thus we don't need to compute its color, just assign it
+                // as black.
+                subblockColors[modifierIdx]     = createRGBA(0, 0, 0, 0);
+                subblockColors[4 + modifierIdx] = createRGBA(0, 0, 0, 0);
+            }
+            else
+            {
+                const int i1                = intensityModifier[u.idht.mode.idm.cw1][modifierIdx];
+                subblockColors[modifierIdx] = createRGBA(r1 + i1, g1 + i1, b1 + i1);
+
+                const int i2 = intensityModifier[u.idht.mode.idm.cw2][modifierIdx];
+                subblockColors[4 + modifierIdx] = createRGBA(r2 + i2, g2 + i2, b2 + i2);
+            }
+        }
+
+        int pixelIndices[kNumPixelsInBlock];
+        int pixelIndexCounts[kNumColors] = {0};
+        // Extract pixel indices from a ETC block.
+        for (size_t blockIdx = 0; blockIdx < 2; blockIdx++)
+        {
+            extractPixelIndices(pixelIndices, pixelIndexCounts, x, y, w, h, u.idht.mode.idm.flipbit,
+                                blockIdx);
+        }
+
+        int minColorIndex, maxColorIndex;
+        selectEndPointPCA(pixelIndexCounts, subblockColors, kNumColors, &minColorIndex,
+                          &maxColorIndex);
+
+        packBC1(dest, pixelIndices, pixelIndexCounts, subblockColors, kNumColors, minColorIndex,
+                maxColorIndex, nonOpaquePunchThroughAlpha);
+    }
+
+    void transcodeTBlockToBC1(uint8_t *dest,
+                              size_t x,
+                              size_t y,
+                              size_t w,
+                              size_t h,
+                              const uint8_t alphaValues[4][4],
+                              bool nonOpaquePunchThroughAlpha) const
+    {
+        static const size_t kNumColors = 4;
+
+        // Table C.8, distance index for T and H modes
+        const auto &block = u.idht.mode.tm;
+
+        int r1 = extend_4to8bits(block.TR1a << 2 | block.TR1b);
+        int g1 = extend_4to8bits(block.TG1);
+        int b1 = extend_4to8bits(block.TB1);
+        int r2 = extend_4to8bits(block.TR2);
+        int g2 = extend_4to8bits(block.TG2);
+        int b2 = extend_4to8bits(block.TB2);
+
+        static int distance[8] = {3, 6, 11, 16, 23, 32, 41, 64};
+        const int d            = distance[block.Tda << 1 | block.Tdb];
+
+        // In ETC opaque punch through formats, index == 2 means transparent pixel.
+        // Thus we don't need to compute its color, just assign it as black.
+        const R8G8B8A8 paintColors[kNumColors] = {
+            createRGBA(r1, g1, b1),
+            createRGBA(r2 + d, g2 + d, b2 + d),
+            nonOpaquePunchThroughAlpha ? createRGBA(0, 0, 0, 0) : createRGBA(r2, g2, b2),
+            createRGBA(r2 - d, g2 - d, b2 - d),
+        };
+
+        int pixelIndices[kNumPixelsInBlock];
+        int pixelIndexCounts[kNumColors] = {0};
+        for (size_t j = 0; j < 4; j++)
+        {
+            int *row = &pixelIndices[j * 4];
+            for (size_t i = 0; i < 4; i++)
+            {
+                const size_t pixelIndex = getIndex(i, j);
+                row[i]                  = static_cast<int>(pixelIndex);
+                pixelIndexCounts[pixelIndex]++;
+            }
+        }
+
+        int minColorIndex, maxColorIndex;
+        selectEndPointPCA(pixelIndexCounts, paintColors, kNumColors, &minColorIndex,
+                          &maxColorIndex);
+
+        packBC1(dest, pixelIndices, pixelIndexCounts, paintColors, kNumColors, minColorIndex,
+                maxColorIndex, nonOpaquePunchThroughAlpha);
+    }
+
+    void transcodeHBlockToBC1(uint8_t *dest,
+                              size_t x,
+                              size_t y,
+                              size_t w,
+                              size_t h,
+                              const uint8_t alphaValues[4][4],
+                              bool nonOpaquePunchThroughAlpha) const
+    {
+        static const size_t kNumColors = 4;
+
+        // Table C.8, distance index for T and H modes
+        const auto &block = u.idht.mode.hm;
+
+        int r1 = extend_4to8bits(block.HR1);
+        int g1 = extend_4to8bits(block.HG1a << 1 | block.HG1b);
+        int b1 = extend_4to8bits(block.HB1a << 3 | block.HB1b << 1 | block.HB1c);
+        int r2 = extend_4to8bits(block.HR2);
+        int g2 = extend_4to8bits(block.HG2a << 1 | block.HG2b);
+        int b2 = extend_4to8bits(block.HB2);
+
+        static const int distance[8] = {3, 6, 11, 16, 23, 32, 41, 64};
+        const int orderingTrickBit =
+            ((r1 << 16 | g1 << 8 | b1) >= (r2 << 16 | g2 << 8 | b2) ? 1 : 0);
+        const int d = distance[(block.Hda << 2) | (block.Hdb << 1) | orderingTrickBit];
+
+        // In ETC opaque punch through formats, index == 2 means transparent pixel.
+        // Thus we don't need to compute its color, just assign it as black.
+        const R8G8B8A8 paintColors[kNumColors] = {
+            createRGBA(r1 + d, g1 + d, b1 + d),
+            createRGBA(r1 - d, g1 - d, b1 - d),
+            nonOpaquePunchThroughAlpha ? createRGBA(0, 0, 0, 0)
+                                       : createRGBA(r2 + d, g2 + d, b2 + d),
+            createRGBA(r2 - d, g2 - d, b2 - d),
+        };
+
+        int pixelIndices[kNumPixelsInBlock];
+        int pixelIndexCounts[kNumColors] = {0};
+        for (size_t j = 0; j < 4; j++)
+        {
+            int *row = &pixelIndices[j * 4];
+            for (size_t i = 0; i < 4; i++)
+            {
+                const size_t pixelIndex = getIndex(i, j);
+                row[i]                  = static_cast<int>(pixelIndex);
+                pixelIndexCounts[pixelIndex]++;
+            }
+        }
+
+        int minColorIndex, maxColorIndex;
+        selectEndPointPCA(pixelIndexCounts, paintColors, kNumColors, &minColorIndex,
+                          &maxColorIndex);
+
+        packBC1(dest, pixelIndices, pixelIndexCounts, paintColors, kNumColors, minColorIndex,
+                maxColorIndex, nonOpaquePunchThroughAlpha);
+    }
+
+    void transcodePlanarBlockToBC1(uint8_t *dest,
+                                   size_t x,
+                                   size_t y,
+                                   size_t w,
+                                   size_t h,
+                                   const uint8_t alphaValues[4][4]) const
+    {
+        static const size_t kNumColors = kNumPixelsInBlock;
+
+        R8G8B8A8 rgbaBlock[kNumColors];
+        decodePlanarBlock(reinterpret_cast<uint8_t *>(rgbaBlock), x, y, w, h, sizeof(R8G8B8A8) * 4,
+                          alphaValues);
+
+        // Planar block doesn't have a color table, fill indices as full
+        int pixelIndices[kNumPixelsInBlock] = {0, 1, 2,  3,  4,  5,  6,  7,
+                                               8, 9, 10, 11, 12, 13, 14, 15};
+        int pixelIndexCounts[kNumColors]    = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+
+        int minColorIndex, maxColorIndex;
+        selectEndPointPCA(pixelIndexCounts, rgbaBlock, kNumColors, &minColorIndex, &maxColorIndex);
+
+        packBC1(dest, pixelIndices, pixelIndexCounts, rgbaBlock, kNumColors, minColorIndex,
+                maxColorIndex, false);
+    }
+
+    // Single channel utility functions
+    int getSingleEACChannel(size_t x, size_t y, bool isSigned) const
+    {
+        int codeword   = isSigned ? u.scblk.base_codeword.s : u.scblk.base_codeword.us;
+        int multiplier = (u.scblk.multiplier == 0) ? 1 : u.scblk.multiplier * 8;
+        return codeword * 8 + 4 + getSingleChannelModifier(x, y) * multiplier;
+    }
+
+    int getSingleETC2Channel(size_t x, size_t y, bool isSigned) const
+    {
+        int codeword = isSigned ? u.scblk.base_codeword.s : u.scblk.base_codeword.us;
+        return codeword + getSingleChannelModifier(x, y) * u.scblk.multiplier;
+    }
+
+    int getSingleChannelIndex(size_t x, size_t y) const
+    {
+        ASSERT(x < 4 && y < 4);
+
+        // clang-format off
+        switch (x * 4 + y)
+        {
+            case 0: return u.scblk.ma;
+            case 1: return u.scblk.mb;
+            case 2: return u.scblk.mc1 << 1 | u.scblk.mc2;
+            case 3: return u.scblk.md;
+            case 4: return u.scblk.me;
+            case 5: return u.scblk.mf1 << 2 | u.scblk.mf2;
+            case 6: return u.scblk.mg;
+            case 7: return u.scblk.mh;
+            case 8: return u.scblk.mi;
+            case 9: return u.scblk.mj;
+            case 10: return u.scblk.mk1 << 1 | u.scblk.mk2;
+            case 11: return u.scblk.ml;
+            case 12: return u.scblk.mm;
+            case 13: return u.scblk.mn1 << 2 | u.scblk.mn2;
+            case 14: return u.scblk.mo;
+            case 15: return u.scblk.mp;
+            default: UNREACHABLE(); return 0;
+        }
+        // clang-format on
+    }
+
+    int getSingleChannelModifier(size_t x, size_t y) const
+    {
+        // clang-format off
+        static const int modifierTable[16][8] =
+        {
+            { -3, -6,  -9, -15, 2, 5, 8, 14 },
+            { -3, -7, -10, -13, 2, 6, 9, 12 },
+            { -2, -5,  -8, -13, 1, 4, 7, 12 },
+            { -2, -4,  -6, -13, 1, 3, 5, 12 },
+            { -3, -6,  -8, -12, 2, 5, 7, 11 },
+            { -3, -7,  -9, -11, 2, 6, 8, 10 },
+            { -4, -7,  -8, -11, 3, 6, 7, 10 },
+            { -3, -5,  -8, -11, 2, 4, 7, 10 },
+            { -2, -6,  -8, -10, 1, 5, 7,  9 },
+            { -2, -5,  -8, -10, 1, 4, 7,  9 },
+            { -2, -4,  -8, -10, 1, 3, 7,  9 },
+            { -2, -5,  -7, -10, 1, 4, 6,  9 },
+            { -3, -4,  -7, -10, 2, 3, 6,  9 },
+            { -1, -2,  -3, -10, 0, 1, 2,  9 },
+            { -4, -6,  -8,  -9, 3, 5, 7,  8 },
+            { -3, -5,  -7,  -9, 2, 4, 6,  8 }
+        };
+        // clang-format on
+
+        return modifierTable[u.scblk.table_index][getSingleChannelIndex(x, y)];
+    }
+};
+
+// clang-format off
+static const uint8_t DefaultETCAlphaValues[4][4] =
+{
+    { 255, 255, 255, 255 },
+    { 255, 255, 255, 255 },
+    { 255, 255, 255, 255 },
+    { 255, 255, 255, 255 },
+};
+
+// clang-format on
+void LoadR11EACToR8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch,
+                    bool isSigned)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y += 4)
+        {
+            const ETC2Block *sourceRow =
+                priv::OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+            uint8_t *destRow =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x += 4)
+            {
+                const ETC2Block *sourceBlock = sourceRow + (x / 4);
+                uint8_t *destPixels          = destRow + x;
+
+                sourceBlock->decodeAsSingleETC2Channel(destPixels, x, y, width, height, 1,
+                                                       outputRowPitch, isSigned);
+            }
+        }
+    }
+}
+
+void LoadRG11EACToRG8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch,
+                      bool isSigned)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y += 4)
+        {
+            const ETC2Block *sourceRow =
+                priv::OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+            uint8_t *destRow =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x += 4)
+            {
+                uint8_t *destPixelsRed          = destRow + (x * 2);
+                const ETC2Block *sourceBlockRed = sourceRow + (x / 2);
+                sourceBlockRed->decodeAsSingleETC2Channel(destPixelsRed, x, y, width, height, 2,
+                                                          outputRowPitch, isSigned);
+
+                uint8_t *destPixelsGreen          = destPixelsRed + 1;
+                const ETC2Block *sourceBlockGreen = sourceBlockRed + 1;
+                sourceBlockGreen->decodeAsSingleETC2Channel(destPixelsGreen, x, y, width, height, 2,
+                                                            outputRowPitch, isSigned);
+            }
+        }
+    }
+}
+
+void LoadR11EACToR16(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch,
+                     bool isSigned,
+                     bool isFloat)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y += 4)
+        {
+            const ETC2Block *sourceRow =
+                priv::OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+            uint16_t *destRow =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x += 4)
+            {
+                const ETC2Block *sourceBlock = sourceRow + (x / 4);
+                uint16_t *destPixels         = destRow + x;
+
+                sourceBlock->decodeAsSingleEACChannel(destPixels, x, y, width, height, 1,
+                                                      outputRowPitch, isSigned, isFloat);
+            }
+        }
+    }
+}
+
+void LoadRG11EACToRG16(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch,
+                       bool isSigned,
+                       bool isFloat)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y += 4)
+        {
+            const ETC2Block *sourceRow =
+                priv::OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+            uint16_t *destRow =
+                priv::OffsetDataPointer<uint16_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x += 4)
+            {
+                uint16_t *destPixelsRed         = destRow + (x * 2);
+                const ETC2Block *sourceBlockRed = sourceRow + (x / 2);
+                sourceBlockRed->decodeAsSingleEACChannel(destPixelsRed, x, y, width, height, 2,
+                                                         outputRowPitch, isSigned, isFloat);
+
+                uint16_t *destPixelsGreen         = destPixelsRed + 1;
+                const ETC2Block *sourceBlockGreen = sourceBlockRed + 1;
+                sourceBlockGreen->decodeAsSingleEACChannel(destPixelsGreen, x, y, width, height, 2,
+                                                           outputRowPitch, isSigned, isFloat);
+            }
+        }
+    }
+}
+
+void LoadETC2RGB8ToRGBA8(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch,
+                         bool punchthroughAlpha)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y += 4)
+        {
+            const ETC2Block *sourceRow =
+                priv::OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+            uint8_t *destRow =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x += 4)
+            {
+                const ETC2Block *sourceBlock = sourceRow + (x / 4);
+                uint8_t *destPixels          = destRow + (x * 4);
+
+                sourceBlock->decodeAsRGB(destPixels, x, y, width, height, outputRowPitch,
+                                         DefaultETCAlphaValues, punchthroughAlpha);
+            }
+        }
+    }
+}
+
+void LoadETC2RGB8ToBC1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch,
+                       bool punchthroughAlpha)
+{
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y += 4)
+        {
+            const ETC2Block *sourceRow =
+                priv::OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+            uint8_t *destRow = priv::OffsetDataPointer<uint8_t>(output, y / 4, z, outputRowPitch,
+                                                                outputDepthPitch);
+
+            for (size_t x = 0; x < width; x += 4)
+            {
+                const ETC2Block *sourceBlock = sourceRow + (x / 4);
+                uint8_t *destPixels          = destRow + (x * 2);
+
+                sourceBlock->transcodeAsBC1(destPixels, x, y, width, height, DefaultETCAlphaValues,
+                                            punchthroughAlpha);
+            }
+        }
+    }
+}
+
+void LoadETC2RGBA8ToRGBA8(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch,
+                          bool srgb)
+{
+    uint8_t decodedAlphaValues[4][4];
+
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y += 4)
+        {
+            const ETC2Block *sourceRow =
+                priv::OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+            uint8_t *destRow =
+                priv::OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x += 4)
+            {
+                const ETC2Block *sourceBlockAlpha = sourceRow + (x / 2);
+                sourceBlockAlpha->decodeAsSingleETC2Channel(
+                    reinterpret_cast<uint8_t *>(decodedAlphaValues), x, y, width, height, 1, 4,
+                    false);
+
+                uint8_t *destPixels             = destRow + (x * 4);
+                const ETC2Block *sourceBlockRGB = sourceBlockAlpha + 1;
+                sourceBlockRGB->decodeAsRGB(destPixels, x, y, width, height, outputRowPitch,
+                                            decodedAlphaValues, false);
+            }
+        }
+    }
+}
+
+}  // anonymous namespace
+
+void LoadETC1RGB8ToRGBA8(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                        outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC1RGB8ToBC1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToBC1(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadEACR11ToR8(size_t width,
+                    size_t height,
+                    size_t depth,
+                    const uint8_t *input,
+                    size_t inputRowPitch,
+                    size_t inputDepthPitch,
+                    uint8_t *output,
+                    size_t outputRowPitch,
+                    size_t outputDepthPitch)
+{
+    LoadR11EACToR8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                   outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadEACR11SToR8(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch)
+{
+    LoadR11EACToR8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                   outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadEACRG11ToRG8(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    LoadRG11EACToRG8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                     outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadEACRG11SToRG8(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    LoadRG11EACToRG8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                     outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadEACR11ToR16(size_t width,
+                     size_t height,
+                     size_t depth,
+                     const uint8_t *input,
+                     size_t inputRowPitch,
+                     size_t inputDepthPitch,
+                     uint8_t *output,
+                     size_t outputRowPitch,
+                     size_t outputDepthPitch)
+{
+    LoadR11EACToR16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                    outputRowPitch, outputDepthPitch, false, false);
+}
+
+void LoadEACR11SToR16(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    LoadR11EACToR16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                    outputRowPitch, outputDepthPitch, true, false);
+}
+
+void LoadEACRG11ToRG16(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    LoadRG11EACToRG16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, false, false);
+}
+
+void LoadEACRG11SToRG16(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    LoadRG11EACToRG16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, true, false);
+}
+
+void LoadEACR11ToR16F(size_t width,
+                      size_t height,
+                      size_t depth,
+                      const uint8_t *input,
+                      size_t inputRowPitch,
+                      size_t inputDepthPitch,
+                      uint8_t *output,
+                      size_t outputRowPitch,
+                      size_t outputDepthPitch)
+{
+    LoadR11EACToR16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                    outputRowPitch, outputDepthPitch, false, true);
+}
+
+void LoadEACR11SToR16F(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    LoadR11EACToR16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                    outputRowPitch, outputDepthPitch, true, true);
+}
+
+void LoadEACRG11ToRG16F(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    LoadRG11EACToRG16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, false, true);
+}
+
+void LoadEACRG11SToRG16F(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    LoadRG11EACToRG16(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, true, true);
+}
+
+void LoadETC2RGB8ToRGBA8(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                        outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2RGB8ToBC1(size_t width,
+                       size_t height,
+                       size_t depth,
+                       const uint8_t *input,
+                       size_t inputRowPitch,
+                       size_t inputDepthPitch,
+                       uint8_t *output,
+                       size_t outputRowPitch,
+                       size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToBC1(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2SRGB8ToRGBA8(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                        outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2SRGB8ToBC1(size_t width,
+                        size_t height,
+                        size_t depth,
+                        const uint8_t *input,
+                        size_t inputRowPitch,
+                        size_t inputDepthPitch,
+                        uint8_t *output,
+                        size_t outputRowPitch,
+                        size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToBC1(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2RGB8A1ToRGBA8(size_t width,
+                           size_t height,
+                           size_t depth,
+                           const uint8_t *input,
+                           size_t inputRowPitch,
+                           size_t inputDepthPitch,
+                           uint8_t *output,
+                           size_t outputRowPitch,
+                           size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                        outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadETC2RGB8A1ToBC1(size_t width,
+                         size_t height,
+                         size_t depth,
+                         const uint8_t *input,
+                         size_t inputRowPitch,
+                         size_t inputDepthPitch,
+                         uint8_t *output,
+                         size_t outputRowPitch,
+                         size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToBC1(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadETC2SRGB8A1ToRGBA8(size_t width,
+                            size_t height,
+                            size_t depth,
+                            const uint8_t *input,
+                            size_t inputRowPitch,
+                            size_t inputDepthPitch,
+                            uint8_t *output,
+                            size_t outputRowPitch,
+                            size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                        outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadETC2SRGB8A1ToBC1(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    LoadETC2RGB8ToBC1(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                      outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadETC2RGBA8ToRGBA8(size_t width,
+                          size_t height,
+                          size_t depth,
+                          const uint8_t *input,
+                          size_t inputRowPitch,
+                          size_t inputDepthPitch,
+                          uint8_t *output,
+                          size_t outputRowPitch,
+                          size_t outputDepthPitch)
+{
+    LoadETC2RGBA8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                         outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2SRGBA8ToSRGBA8(size_t width,
+                            size_t height,
+                            size_t depth,
+                            const uint8_t *input,
+                            size_t inputRowPitch,
+                            size_t inputDepthPitch,
+                            uint8_t *output,
+                            size_t outputRowPitch,
+                            size_t outputDepthPitch)
+{
+    LoadETC2RGBA8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+                         outputRowPitch, outputDepthPitch, true);
+}
+
+}  // namespace angle
diff --git a/gfx/angle/checkout/src/image_util/loadimage_paletted.cpp b/gfx/angle/checkout/src/image_util/loadimage_paletted.cpp
new file mode 100644
index 0000000000..af36ce3cd6
--- /dev/null
+++ b/gfx/angle/checkout/src/image_util/loadimage_paletted.cpp
@@ -0,0 +1,158 @@
+//
+// Copyright 2022 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// loadimage_paletted.cpp: Decodes GL_PALETTE_* textures.
+
+#include "image_util/loadimage.h"
+
+#include <type_traits>
+#include "common/mathutil.h"
+
+#include "image_util/imageformats.h"
+
+namespace angle
+{
+
+namespace
+{
+
+template <typename T>
+R8G8B8A8 ReadColor(const T *src)
+{
+    gl::ColorF tmp;
+    T::readColor(&tmp, src);
+    R8G8B8A8 rgba;
+    R8G8B8A8::writeColor(&rgba, &tmp);
+    return rgba;
+}
+
+size_t DecodeIndexIntoPalette(const uint8_t *row, size_t i, uint32_t indexBits)
+{
+    switch (indexBits)
+    {
+        case 4:
+        {
+            // From OES_compressed_paletted_texture, section Additions to
+            // Chapter 3 of the OpenGL 1.3 Specification (Rasterization):
+            //
+            // Texel Data Formats for compressed paletted textures
+            //
+            // PALETTE4_xxx:
+            //
+            //      7 6 5 4 3 2 1 0
+            //      ---------------
+            //     |  1st  |  2nd  |
+            //     | texel | texel |
+            //      ---------------
+
+            bool even = i % 2 == 0;
+            return (row[i / 2] >> (even ? 4 : 0)) & 0x0f;
+        }
+
+        case 8:
+            return row[i];
+
+        default:
+            UNREACHABLE();
+            return 0;
+    }
+}
+
+R8G8B8A8 DecodeColor(const uint8_t *src,
+                     uint32_t redBlueBits,
+                     uint32_t greenBits,
+                     uint32_t alphaBits)
+{
+    switch (redBlueBits)
+    {
+        case 8:
+            ASSERT(greenBits == 8);
+            switch (alphaBits)
+            {
+                case 0:
+                    return ReadColor<>(reinterpret_cast<const R8G8B8 *>(src));
+                case 8:
+                    return ReadColor<>(reinterpret_cast<const R8G8B8A8 *>(src));
+                default:
+                    UNREACHABLE();
+                    break;
+            }
+            break;
+
+        case 5:
+            switch (greenBits)
+            {
+                case 6:
+                    ASSERT(alphaBits == 0);
+                    return ReadColor<>(reinterpret_cast<const R5G6B5 *>(src));
+                case 5:
+                    ASSERT(alphaBits == 1);
+                    return ReadColor<>(reinterpret_cast<const R5G5B5A1 *>(src));
+                default:
+                    UNREACHABLE();
+                    break;
+            }
+            break;
+
+        case 4:
+            ASSERT(greenBits == 4 && alphaBits == 4);
+            return ReadColor<>(reinterpret_cast<const R4G4B4A4 *>(src));
+
+        default:
+            UNREACHABLE();
+            break;
+    }
+
+    UNREACHABLE();
+    return R8G8B8A8{0, 0, 0, 255};
+}
+
+}  // namespace
+
+// See LoadPalettedToRGBA8.
+void LoadPalettedToRGBA8Impl(size_t width,
+                             size_t height,
+                             size_t depth,
+                             uint32_t indexBits,
+                             uint32_t redBlueBits,
+                             uint32_t greenBits,
+                             uint32_t alphaBits,
+                             const uint8_t *input,
+                             size_t inputRowPitch,
+                             size_t inputDepthPitch,
+                             uint8_t *output,
+                             size_t outputRowPitch,
+                             size_t outputDepthPitch)
+{
+    size_t colorBytes   = (redBlueBits + greenBits + redBlueBits + alphaBits) / 8;
+    size_t paletteSize  = 1 << indexBits;
+    size_t paletteBytes = paletteSize * colorBytes;
+
+    const uint8_t *palette = input;
+
+    const uint8_t *texels = input + paletteBytes;  // + TODO(http://anglebug.com/7688): mip levels
+
+    for (size_t z = 0; z < depth; z++)
+    {
+        for (size_t y = 0; y < height; y++)
+        {
+            const uint8_t *srcRow =
+                priv::OffsetDataPointer<uint8_t>(texels, y, z, inputRowPitch, inputDepthPitch);
+            R8G8B8A8 *dstRow =
+                priv::OffsetDataPointer<R8G8B8A8>(output, y, z, outputRowPitch, outputDepthPitch);
+
+            for (size_t x = 0; x < width; x++)
+            {
+                size_t indexIntoPalette = DecodeIndexIntoPalette(srcRow, x, indexBits);
+
+                dstRow[x] = DecodeColor(palette + indexIntoPalette * colorBytes, redBlueBits,
+                                        greenBits, alphaBits);
+            }
+        }
+    }
+}
+
+}  // namespace angle