Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 365 insertions, 0 deletions

diff --git a/gfx/angle/checkout/src/libANGLE/ImageIndex.cpp b/gfx/angle/checkout/src/libANGLE/ImageIndex.cpp
new file mode 100644
index 0000000000..bdeedcd9a5
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/ImageIndex.cpp
@@ -0,0 +1,365 @@
+//
+// 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.
+//
+
+// ImageIndex.cpp: Implementation for ImageIndex methods.
+
+#include "libANGLE/ImageIndex.h"
+
+#include "common/utilities.h"
+#include "libANGLE/Constants.h"
+#include "libANGLE/angletypes.h"
+
+#include <tuple>
+
+namespace gl
+{
+namespace
+{
+GLint TextureTargetToLayer(TextureTarget target)
+{
+    switch (target)
+    {
+        case TextureTarget::CubeMapPositiveX:
+            return 0;
+        case TextureTarget::CubeMapNegativeX:
+            return 1;
+        case TextureTarget::CubeMapPositiveY:
+            return 2;
+        case TextureTarget::CubeMapNegativeY:
+            return 3;
+        case TextureTarget::CubeMapPositiveZ:
+            return 4;
+        case TextureTarget::CubeMapNegativeZ:
+            return 5;
+        case TextureTarget::External:
+            return ImageIndex::kEntireLevel;
+        case TextureTarget::Rectangle:
+            return ImageIndex::kEntireLevel;
+        case TextureTarget::_2D:
+            return ImageIndex::kEntireLevel;
+        case TextureTarget::_2DArray:
+            return ImageIndex::kEntireLevel;
+        case TextureTarget::_2DMultisample:
+            return ImageIndex::kEntireLevel;
+        case TextureTarget::_2DMultisampleArray:
+            return ImageIndex::kEntireLevel;
+        case TextureTarget::_3D:
+            return ImageIndex::kEntireLevel;
+        default:
+            UNREACHABLE();
+            return 0;
+    }
+}
+
+TextureTarget TextureTypeToTarget(TextureType type, GLint layerIndex)
+{
+    if (type == TextureType::CubeMap)
+    {
+        // As GL_TEXTURE_CUBE_MAP cannot be a texture target in texImage*D APIs, so we don't allow
+        // an entire cube map to have a texture target.
+        ASSERT(layerIndex != ImageIndex::kEntireLevel);
+        return CubeFaceIndexToTextureTarget(layerIndex);
+    }
+    else
+    {
+        return NonCubeTextureTypeToTarget(type);
+    }
+}
+
+bool IsArrayTarget(TextureTarget target)
+{
+    switch (target)
+    {
+        case TextureTarget::_2DArray:
+        case TextureTarget::_2DMultisampleArray:
+            return true;
+        default:
+            return false;
+    }
+}
+}  // anonymous namespace
+
+ImageIndex::ImageIndex()
+    : mType(TextureType::InvalidEnum), mLevelIndex(0), mLayerIndex(0), mLayerCount(kEntireLevel)
+{}
+
+ImageIndex::ImageIndex(const ImageIndex &other) = default;
+
+ImageIndex &ImageIndex::operator=(const ImageIndex &other) = default;
+
+bool ImageIndex::hasLayer() const
+{
+    return mLayerIndex != kEntireLevel;
+}
+
+bool ImageIndex::isLayered() const
+{
+    switch (mType)
+    {
+        case TextureType::_2DArray:
+        case TextureType::_2DMultisampleArray:
+        case TextureType::CubeMap:
+        case TextureType::_3D:
+            return mLayerIndex == kEntireLevel;
+        default:
+            return false;
+    }
+}
+
+bool ImageIndex::has3DLayer() const
+{
+    // It's quicker to check != CubeMap than calling usesTex3D, which checks multiple types. This
+    // ASSERT validates the check gives the same result.
+    ASSERT(!hasLayer() || ((mType != TextureType::CubeMap) == usesTex3D()));
+    return (hasLayer() && mType != TextureType::CubeMap);
+}
+
+bool ImageIndex::usesTex3D() const
+{
+    return mType == TextureType::_3D || mType == TextureType::_2DArray ||
+           mType == TextureType::_2DMultisampleArray;
+}
+
+TextureTarget ImageIndex::getTarget() const
+{
+    return TextureTypeToTarget(mType, mLayerIndex);
+}
+
+GLint ImageIndex::cubeMapFaceIndex() const
+{
+    ASSERT(mType == TextureType::CubeMap);
+    ASSERT(mLayerIndex == kEntireLevel || mLayerIndex < static_cast<GLint>(kCubeFaceCount));
+    return mLayerIndex;
+}
+
+bool ImageIndex::valid() const
+{
+    return mType != TextureType::InvalidEnum;
+}
+
+bool ImageIndex::isEntireLevelCubeMap() const
+{
+    return mType == TextureType::CubeMap && mLayerIndex == ImageIndex::kEntireLevel;
+}
+
+ImageIndex ImageIndex::Make2D(GLint levelIndex)
+{
+    return ImageIndex(TextureType::_2D, levelIndex, kEntireLevel, 1);
+}
+
+ImageIndex ImageIndex::MakeRectangle(GLint levelIndex)
+{
+    return ImageIndex(TextureType::Rectangle, levelIndex, kEntireLevel, 1);
+}
+
+ImageIndex ImageIndex::MakeCubeMapFace(TextureTarget target, GLint levelIndex)
+{
+    ASSERT(IsCubeMapFaceTarget(target));
+    return ImageIndex(TextureType::CubeMap, levelIndex, TextureTargetToLayer(target), 1);
+}
+
+ImageIndex ImageIndex::Make2DArray(GLint levelIndex, GLint layerIndex)
+{
+    return ImageIndex(TextureType::_2DArray, levelIndex, layerIndex, 1);
+}
+
+ImageIndex ImageIndex::Make2DArrayRange(GLint levelIndex, GLint layerIndex, GLint numLayers)
+{
+    return ImageIndex(TextureType::_2DArray, levelIndex, layerIndex, numLayers);
+}
+
+ImageIndex ImageIndex::Make3D(GLint levelIndex, GLint layerIndex)
+{
+    return ImageIndex(TextureType::_3D, levelIndex, layerIndex, 1);
+}
+
+ImageIndex ImageIndex::MakeFromTarget(TextureTarget target, GLint levelIndex, GLint depth)
+{
+    return ImageIndex(TextureTargetToType(target), levelIndex, TextureTargetToLayer(target),
+                      IsArrayTarget(target) ? depth : 1);
+}
+
+ImageIndex ImageIndex::MakeFromType(TextureType type,
+                                    GLint levelIndex,
+                                    GLint layerIndex,
+                                    GLint layerCount)
+{
+    GLint overrideLayerCount =
+        (type == TextureType::CubeMap && layerIndex == kEntireLevel ? kCubeFaceCount : layerCount);
+    return ImageIndex(type, levelIndex, layerIndex, overrideLayerCount);
+}
+
+ImageIndex ImageIndex::Make2DMultisample()
+{
+    return ImageIndex(TextureType::_2DMultisample, 0, kEntireLevel, 1);
+}
+
+ImageIndex ImageIndex::Make2DMultisampleArray(GLint layerIndex)
+{
+    return ImageIndex(TextureType::_2DMultisampleArray, 0, layerIndex, 1);
+}
+
+ImageIndex ImageIndex::Make2DMultisampleArrayRange(GLint layerIndex, GLint numLayers)
+{
+    return ImageIndex(TextureType::_2DMultisampleArray, 0, layerIndex, numLayers);
+}
+
+bool ImageIndex::operator<(const ImageIndex &b) const
+{
+    return std::tie(mType, mLevelIndex, mLayerIndex, mLayerCount) <
+           std::tie(b.mType, b.mLevelIndex, b.mLayerIndex, b.mLayerCount);
+}
+
+bool ImageIndex::operator==(const ImageIndex &b) const
+{
+    return std::tie(mType, mLevelIndex, mLayerIndex, mLayerCount) ==
+           std::tie(b.mType, b.mLevelIndex, b.mLayerIndex, b.mLayerCount);
+}
+
+bool ImageIndex::operator!=(const ImageIndex &b) const
+{
+    return !(*this == b);
+}
+
+ImageIndex::ImageIndex(TextureType type, GLint levelIndex, GLint layerIndex, GLint layerCount)
+    : mType(type), mLevelIndex(levelIndex), mLayerIndex(layerIndex), mLayerCount(layerCount)
+{}
+
+ImageIndexIterator ImageIndex::getLayerIterator(GLint layerCount) const
+{
+    ASSERT(mType != TextureType::_2D && !hasLayer());
+    return ImageIndexIterator::MakeGeneric(mType, mLevelIndex, mLevelIndex + 1, 0, layerCount);
+}
+
+ImageIndexIterator::ImageIndexIterator(const ImageIndexIterator &other) = default;
+
+ImageIndexIterator ImageIndexIterator::Make2D(GLint minMip, GLint maxMip)
+{
+    return ImageIndexIterator(TextureType::_2D, Range<GLint>(minMip, maxMip),
+                              Range<GLint>(ImageIndex::kEntireLevel, ImageIndex::kEntireLevel),
+                              nullptr);
+}
+
+ImageIndexIterator ImageIndexIterator::MakeRectangle(GLint minMip, GLint maxMip)
+{
+    return ImageIndexIterator(TextureType::Rectangle, Range<GLint>(minMip, maxMip),
+                              Range<GLint>(ImageIndex::kEntireLevel, ImageIndex::kEntireLevel),
+                              nullptr);
+}
+
+ImageIndexIterator ImageIndexIterator::MakeCube(GLint minMip, GLint maxMip)
+{
+    return ImageIndexIterator(TextureType::CubeMap, Range<GLint>(minMip, maxMip),
+                              Range<GLint>(0, 6), nullptr);
+}
+
+ImageIndexIterator ImageIndexIterator::Make3D(GLint minMip,
+                                              GLint maxMip,
+                                              GLint minLayer,
+                                              GLint maxLayer)
+{
+    return ImageIndexIterator(TextureType::_3D, Range<GLint>(minMip, maxMip),
+                              Range<GLint>(minLayer, maxLayer), nullptr);
+}
+
+ImageIndexIterator ImageIndexIterator::Make2DArray(GLint minMip,
+                                                   GLint maxMip,
+                                                   const GLsizei *layerCounts)
+{
+    return ImageIndexIterator(TextureType::_2DArray, Range<GLint>(minMip, maxMip),
+                              Range<GLint>(0, IMPLEMENTATION_MAX_2D_ARRAY_TEXTURE_LAYERS),
+                              layerCounts);
+}
+
+ImageIndexIterator ImageIndexIterator::Make2DMultisample()
+{
+    return ImageIndexIterator(TextureType::_2DMultisample, Range<GLint>(0, 1),
+                              Range<GLint>(ImageIndex::kEntireLevel, ImageIndex::kEntireLevel),
+                              nullptr);
+}
+
+ImageIndexIterator ImageIndexIterator::Make2DMultisampleArray(const GLsizei *layerCounts)
+{
+    return ImageIndexIterator(TextureType::_2DMultisampleArray, Range<GLint>(0, 1),
+                              Range<GLint>(0, IMPLEMENTATION_MAX_2D_ARRAY_TEXTURE_LAYERS),
+                              layerCounts);
+}
+
+ImageIndexIterator ImageIndexIterator::MakeGeneric(TextureType type,
+                                                   GLint minMip,
+                                                   GLint maxMip,
+                                                   GLint minLayer,
+                                                   GLint maxLayer)
+{
+    if (type == TextureType::CubeMap)
+    {
+        return MakeCube(minMip, maxMip);
+    }
+
+    return ImageIndexIterator(type, Range<GLint>(minMip, maxMip), Range<GLint>(minLayer, maxLayer),
+                              nullptr);
+}
+
+ImageIndexIterator::ImageIndexIterator(TextureType type,
+                                       const Range<GLint> &mipRange,
+                                       const Range<GLint> &layerRange,
+                                       const GLsizei *layerCounts)
+    : mMipRange(mipRange),
+      mLayerRange(layerRange),
+      mLayerCounts(layerCounts),
+      mCurrentIndex(type, mipRange.low(), layerRange.low(), 1)
+{}
+
+GLint ImageIndexIterator::maxLayer() const
+{
+    if (mLayerCounts)
+    {
+        ASSERT(mCurrentIndex.hasLayer());
+        return (mCurrentIndex.getLevelIndex() < mMipRange.high())
+                   ? mLayerCounts[mCurrentIndex.getLevelIndex()]
+                   : 0;
+    }
+    return mLayerRange.high();
+}
+
+ImageIndex ImageIndexIterator::next()
+{
+    ASSERT(hasNext());
+
+    // Make a copy of the current index to return
+    ImageIndex previousIndex = mCurrentIndex;
+
+    // Iterate layers in the inner loop for now. We can add switchable
+    // layer or mip iteration if we need it.
+
+    if (mCurrentIndex.hasLayer() && mCurrentIndex.getLayerIndex() < maxLayer() - 1)
+    {
+        mCurrentIndex.mLayerIndex++;
+    }
+    else if (mCurrentIndex.mLevelIndex < mMipRange.high() - 1)
+    {
+        mCurrentIndex.mLayerIndex = mLayerRange.low();
+        mCurrentIndex.mLevelIndex++;
+    }
+    else
+    {
+        mCurrentIndex = ImageIndex();
+    }
+
+    return previousIndex;
+}
+
+ImageIndex ImageIndexIterator::current() const
+{
+    return mCurrentIndex;
+}
+
+bool ImageIndexIterator::hasNext() const
+{
+    return mCurrentIndex.valid();
+}
+
+}  // namespace gl