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-rw-r--r--gfx/angle/checkout/src/libANGLE/Caps.cpp1371
1 files changed, 1371 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/Caps.cpp b/gfx/angle/checkout/src/libANGLE/Caps.cpp
new file mode 100644
index 0000000000..d0b27ebbc2
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/Caps.cpp
@@ -0,0 +1,1371 @@
+//
+// 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 "libANGLE/Caps.h"
+
+#include "common/angleutils.h"
+#include "common/debug.h"
+
+#include "libANGLE/formatutils.h"
+
+#include "angle_gl.h"
+
+#include <algorithm>
+#include <sstream>
+
+static void InsertExtensionString(const std::string &extension,
+ bool supported,
+ std::vector<std::string> *extensionVector)
+{
+ if (supported)
+ {
+ extensionVector->push_back(extension);
+ }
+}
+
+namespace gl
+{
+
+TextureCaps::TextureCaps() = default;
+
+TextureCaps::TextureCaps(const TextureCaps &other) = default;
+
+TextureCaps &TextureCaps::operator=(const TextureCaps &other) = default;
+
+TextureCaps::~TextureCaps() = default;
+
+GLuint TextureCaps::getMaxSamples() const
+{
+ return !sampleCounts.empty() ? *sampleCounts.rbegin() : 0;
+}
+
+GLuint TextureCaps::getNearestSamples(GLuint requestedSamples) const
+{
+ if (requestedSamples == 0)
+ {
+ return 0;
+ }
+
+ for (SupportedSampleSet::const_iterator i = sampleCounts.begin(); i != sampleCounts.end(); i++)
+ {
+ GLuint samples = *i;
+ if (samples >= requestedSamples)
+ {
+ return samples;
+ }
+ }
+
+ return 0;
+}
+
+TextureCaps GenerateMinimumTextureCaps(GLenum sizedInternalFormat,
+ const Version &clientVersion,
+ const Extensions &extensions)
+{
+ TextureCaps caps;
+
+ const InternalFormat &internalFormatInfo = GetSizedInternalFormatInfo(sizedInternalFormat);
+ caps.texturable = internalFormatInfo.textureSupport(clientVersion, extensions);
+ caps.filterable = internalFormatInfo.filterSupport(clientVersion, extensions);
+ caps.textureAttachment = internalFormatInfo.textureAttachmentSupport(clientVersion, extensions);
+ caps.renderbuffer = internalFormatInfo.renderbufferSupport(clientVersion, extensions);
+ caps.blendable = internalFormatInfo.blendSupport(clientVersion, extensions);
+
+ caps.sampleCounts.insert(0);
+ if (internalFormatInfo.isRequiredRenderbufferFormat(clientVersion))
+ {
+ if ((clientVersion.major >= 3 && clientVersion.minor >= 1) ||
+ (clientVersion.major >= 3 && !internalFormatInfo.isInt()))
+ {
+ caps.sampleCounts.insert(4);
+ }
+ }
+
+ return caps;
+}
+
+TextureCapsMap::TextureCapsMap() {}
+
+TextureCapsMap::~TextureCapsMap() {}
+
+void TextureCapsMap::insert(GLenum internalFormat, const TextureCaps &caps)
+{
+ angle::FormatID formatID = angle::Format::InternalFormatToID(internalFormat);
+ get(formatID) = caps;
+}
+
+void TextureCapsMap::clear()
+{
+ mFormatData.fill(TextureCaps());
+}
+
+const TextureCaps &TextureCapsMap::get(GLenum internalFormat) const
+{
+ angle::FormatID formatID = angle::Format::InternalFormatToID(internalFormat);
+ return get(formatID);
+}
+
+const TextureCaps &TextureCapsMap::get(angle::FormatID formatID) const
+{
+ return mFormatData[formatID];
+}
+
+TextureCaps &TextureCapsMap::get(angle::FormatID formatID)
+{
+ return mFormatData[formatID];
+}
+
+void TextureCapsMap::set(angle::FormatID formatID, const TextureCaps &caps)
+{
+ get(formatID) = caps;
+}
+
+void InitMinimumTextureCapsMap(const Version &clientVersion,
+ const Extensions &extensions,
+ TextureCapsMap *capsMap)
+{
+ for (GLenum internalFormat : GetAllSizedInternalFormats())
+ {
+ capsMap->insert(internalFormat,
+ GenerateMinimumTextureCaps(internalFormat, clientVersion, extensions));
+ }
+}
+
+Extensions::Extensions() = default;
+
+Extensions::Extensions(const Extensions &other) = default;
+
+Extensions &Extensions::operator=(const Extensions &other) = default;
+
+std::vector<std::string> Extensions::getStrings() const
+{
+ std::vector<std::string> extensionStrings;
+
+ for (const auto &extensionInfo : GetExtensionInfoMap())
+ {
+ if (this->*(extensionInfo.second.ExtensionsMember))
+ {
+ extensionStrings.push_back(extensionInfo.first);
+ }
+ }
+
+ return extensionStrings;
+}
+
+Limitations::Limitations() = default;
+Limitations::Limitations(const Limitations &other) = default;
+
+Limitations &Limitations::operator=(const Limitations &other) = default;
+
+static bool GetFormatSupportBase(const TextureCapsMap &textureCaps,
+ const GLenum *requiredFormats,
+ size_t requiredFormatsSize,
+ bool requiresTexturing,
+ bool requiresFiltering,
+ bool requiresAttachingTexture,
+ bool requiresRenderbufferSupport,
+ bool requiresBlending)
+{
+ for (size_t i = 0; i < requiredFormatsSize; i++)
+ {
+ const TextureCaps &cap = textureCaps.get(requiredFormats[i]);
+ if (requiresTexturing && !cap.texturable)
+ {
+ return false;
+ }
+
+ if (requiresFiltering && !cap.filterable)
+ {
+ return false;
+ }
+
+ if (requiresAttachingTexture && !cap.textureAttachment)
+ {
+ return false;
+ }
+
+ if (requiresRenderbufferSupport && !cap.renderbuffer)
+ {
+ return false;
+ }
+
+ if (requiresBlending && !cap.blendable)
+ {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+template <size_t N>
+static bool GetFormatSupport(const TextureCapsMap &textureCaps,
+ const GLenum (&requiredFormats)[N],
+ bool requiresTexturing,
+ bool requiresFiltering,
+ bool requiresAttachingTexture,
+ bool requiresRenderbufferSupport,
+ bool requiresBlending)
+{
+ return GetFormatSupportBase(textureCaps, requiredFormats, N, requiresTexturing,
+ requiresFiltering, requiresAttachingTexture,
+ requiresRenderbufferSupport, requiresBlending);
+}
+
+// Check for GL_OES_packed_depth_stencil support
+static bool DeterminePackedDepthStencilSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_DEPTH24_STENCIL8,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, false, true, true, false);
+}
+
+// Checks for GL_NV_read_depth support
+static bool DetermineReadDepthSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_DEPTH_COMPONENT16,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, false, false);
+}
+
+// Checks for GL_NV_read_stencil support
+static bool DetermineReadStencilSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_STENCIL_INDEX8,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, false, true, false, false);
+}
+
+// Checks for GL_NV_depth_buffer_float2 support
+static bool DetermineDepthBufferFloat2Support(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_DEPTH_COMPONENT32F,
+ GL_DEPTH32F_STENCIL8,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, false, false);
+}
+
+// Checks for GL_OES_rgb8_rgba8 support
+static bool DetermineRGB8AndRGBA8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_RGB8,
+ GL_RGBA8,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, false, false, true, false);
+}
+
+// Checks for GL_EXT_texture_format_BGRA8888 support
+static bool DetermineBGRA8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_BGRA8_EXT,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, true, true, false);
+}
+
+// Checks for GL_EXT_read_format_bgra support
+static bool DetermineBGRAReadFormatSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_BGRA8_EXT,
+ // TODO(http://anglebug.com/4302): GL_EXT_read_format_bgra specifies 2 more types, which are
+ // currently ignored. The equivalent formats would be: GL_BGRA4_ANGLEX, GL_BGR5_A1_ANGLEX
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, true, false);
+}
+
+// Checks for GL_OES_color_buffer_half_float support
+static bool DetermineColorBufferHalfFloatSupport(const TextureCapsMap &textureCaps)
+{
+ // EXT_color_buffer_half_float issue #2 states that an implementation doesn't need to support
+ // rendering to any of the formats but is expected to be able to render to at least one. WebGL
+ // requires that at least RGBA16F is renderable so we make the same requirement.
+ constexpr GLenum requiredFormats[] = {
+ GL_RGBA16F,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, false, true, true, false);
+}
+
+// Checks for GL_OES_texture_half_float support
+static bool DetermineHalfFloatTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_RGBA16F, GL_RGB16F, GL_LUMINANCE_ALPHA16F_EXT, GL_LUMINANCE16F_EXT, GL_ALPHA16F_EXT,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, false, false, false);
+}
+
+// Checks for GL_OES_texture_half_float_linear support
+static bool DetermineHalfFloatTextureFilteringSupport(const TextureCapsMap &textureCaps,
+ bool checkLegacyFormats)
+{
+ constexpr GLenum requiredFormats[] = {GL_RGBA16F, GL_RGB16F};
+ // If GL_OES_texture_half_float is present, this extension must also support legacy formats
+ // introduced by that extension
+ constexpr GLenum requiredFormatsES2[] = {GL_LUMINANCE_ALPHA16F_EXT, GL_LUMINANCE16F_EXT,
+ GL_ALPHA16F_EXT};
+
+ if (checkLegacyFormats &&
+ !GetFormatSupport(textureCaps, requiredFormatsES2, false, true, false, false, false))
+ {
+ return false;
+ }
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, true, false, false, false);
+}
+
+// Checks for GL_OES_texture_float support
+static bool DetermineFloatTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_RGBA32F, GL_RGB32F, GL_LUMINANCE_ALPHA32F_EXT, GL_LUMINANCE32F_EXT, GL_ALPHA32F_EXT,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, false, false, false);
+}
+
+// Checks for GL_OES_texture_float_linear support
+static bool DetermineFloatTextureFilteringSupport(const TextureCapsMap &textureCaps,
+ bool checkLegacyFormats)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_RGBA32F,
+ GL_RGB32F,
+ };
+ // If GL_OES_texture_float is present, this extension must also support legacy formats
+ // introduced by that extension
+ constexpr GLenum requiredFormatsES2[] = {
+ GL_LUMINANCE_ALPHA32F_EXT,
+ GL_LUMINANCE32F_EXT,
+ GL_ALPHA32F_EXT,
+ };
+
+ if (checkLegacyFormats &&
+ !GetFormatSupport(textureCaps, requiredFormatsES2, false, true, false, false, false))
+ {
+ return false;
+ }
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, true, false, false, false);
+}
+
+// Checks for GL_EXT_texture_rg support
+static bool DetermineRGTextureSupport(const TextureCapsMap &textureCaps,
+ bool checkHalfFloatFormats,
+ bool checkFloatFormats)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_R8,
+ GL_RG8,
+ };
+ constexpr GLenum requiredHalfFloatFormats[] = {
+ GL_R16F,
+ GL_RG16F,
+ };
+ constexpr GLenum requiredFloatFormats[] = {
+ GL_R32F,
+ GL_RG32F,
+ };
+
+ if (checkHalfFloatFormats &&
+ !GetFormatSupport(textureCaps, requiredHalfFloatFormats, true, false, false, false, false))
+ {
+ return false;
+ }
+
+ if (checkFloatFormats &&
+ !GetFormatSupport(textureCaps, requiredFloatFormats, true, false, false, false, false))
+ {
+ return false;
+ }
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, true, true, false);
+}
+
+static bool DetermineTextureFormat2101010Support(const TextureCapsMap &textureCaps)
+{
+ // GL_EXT_texture_type_2_10_10_10_REV specifies both RGBA and RGB support whereas desktop GL
+ // only specifies RGBA support, so check both RGBA and RGB before marking as supported.
+ constexpr GLenum requiredFormats[] = {
+ GL_RGB10_A2,
+ GL_RGB10_UNORM_ANGLEX,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_EXT_texture_compression_dxt1 support
+static bool DetermineDXT1TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
+ GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_ANGLE_texture_compression_dxt3 support
+static bool DetermineDXT3TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_ANGLE_texture_compression_dxt5 support
+static bool DetermineDXT5TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_EXT_texture_compression_s3tc_srgb support
+static bool DetermineS3TCsRGBTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_SRGB_S3TC_DXT1_EXT,
+ GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT,
+ GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT,
+ GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_KHR_texture_compression_astc_ldr support
+static bool DetermineASTCLDRTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGBA_ASTC_4x4_KHR, GL_COMPRESSED_RGBA_ASTC_5x4_KHR,
+ GL_COMPRESSED_RGBA_ASTC_5x5_KHR, GL_COMPRESSED_RGBA_ASTC_6x5_KHR,
+ GL_COMPRESSED_RGBA_ASTC_6x6_KHR, GL_COMPRESSED_RGBA_ASTC_8x5_KHR,
+ GL_COMPRESSED_RGBA_ASTC_8x6_KHR, GL_COMPRESSED_RGBA_ASTC_8x8_KHR,
+ GL_COMPRESSED_RGBA_ASTC_10x5_KHR, GL_COMPRESSED_RGBA_ASTC_10x6_KHR,
+ GL_COMPRESSED_RGBA_ASTC_10x8_KHR, GL_COMPRESSED_RGBA_ASTC_10x10_KHR,
+ GL_COMPRESSED_RGBA_ASTC_12x10_KHR, GL_COMPRESSED_RGBA_ASTC_12x12_KHR,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_OES_texture_compression_astc support
+static bool DetermineASTCOESTExtureSupport(const TextureCapsMap &textureCaps)
+{
+ if (!DetermineASTCLDRTextureSupport(textureCaps))
+ {
+ return false;
+ }
+
+ // The OES version of the extension also requires the 3D ASTC formats
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGBA_ASTC_3x3x3_OES, GL_COMPRESSED_RGBA_ASTC_4x3x3_OES,
+ GL_COMPRESSED_RGBA_ASTC_4x4x3_OES, GL_COMPRESSED_RGBA_ASTC_4x4x4_OES,
+ GL_COMPRESSED_RGBA_ASTC_5x4x4_OES, GL_COMPRESSED_RGBA_ASTC_5x5x4_OES,
+ GL_COMPRESSED_RGBA_ASTC_5x5x5_OES, GL_COMPRESSED_RGBA_ASTC_6x5x5_OES,
+ GL_COMPRESSED_RGBA_ASTC_6x6x5_OES, GL_COMPRESSED_RGBA_ASTC_6x6x6_OES,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES,
+ GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_ETC1_RGB8_OES support
+static bool DetermineETC1RGB8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_ETC1_RGB8_OES,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_ETC2_RGB8_texture support
+static bool DetermineETC2RGB8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGB8_ETC2,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_ETC2_sRGB8_texture support
+static bool DetermineETC2sRGB8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_SRGB8_ETC2,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_ETC2_punchthroughA_RGBA8_texture support
+static bool DetermineETC2PunchthroughARGB8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture support
+static bool DetermineETC2PunchthroughAsRGB8AlphaTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_ETC2_RGBA8_texture support
+static bool DetermineETC2RGBA8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGBA8_ETC2_EAC,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_ETC2_sRGB8_alpha8_texture support
+static bool DetermineETC2sRGB8Alpha8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_EAC_R11_unsigned_texture support
+static bool DetermineEACR11UnsignedTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_R11_EAC,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_EAC_R11_signed_texture support
+static bool DetermineEACR11SignedTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_SIGNED_R11_EAC,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_EAC_RG11_unsigned_texture support
+static bool DetermineEACRG11UnsignedTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RG11_EAC,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for OES_compressed_EAC_RG11_signed_texture support
+static bool DetermineEACRG11SignedTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_SIGNED_RG11_EAC,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_EXT_sRGB support
+static bool DetermineSRGBTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFilterFormats[] = {
+ GL_SRGB8,
+ GL_SRGB8_ALPHA8,
+ };
+
+ constexpr GLenum requiredRenderFormats[] = {
+ GL_SRGB8_ALPHA8,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFilterFormats, true, true, false, false, false) &&
+ GetFormatSupport(textureCaps, requiredRenderFormats, true, false, true, true, false);
+}
+
+// Check for GL_EXT_texture_sRGB_R8 support
+static bool DetermineSRGBR8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFilterFormats[] = {GL_SR8_EXT};
+
+ return GetFormatSupport(textureCaps, requiredFilterFormats, true, true, false, false, false);
+}
+
+// Check for GL_EXT_texture_sRGB_RG8 support
+static bool DetermineSRGBRG8TextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFilterFormats[] = {GL_SRG8_EXT};
+
+ return GetFormatSupport(textureCaps, requiredFilterFormats, true, true, false, false, false);
+}
+
+// Check for GL_ANGLE_depth_texture support
+static bool DetermineDepthTextureANGLESupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_DEPTH_COMPONENT16,
+#if !defined(ANGLE_PLATFORM_IOS) && \
+ (!defined(ANGLE_PLATFORM_MACCATALYST) || !defined(ANGLE_CPU_ARM64))
+ // anglebug.com/6082
+ // TODO(dino): Temporarily Removing the need for GL_DEPTH_COMPONENT32_OES
+ // because it is not supported on iOS.
+ // TODO(dino): I think this needs to be a runtime check when running an iOS app on Mac.
+ GL_DEPTH_COMPONENT32_OES,
+#endif
+ GL_DEPTH24_STENCIL8_OES,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, false, false);
+}
+
+// Check for GL_OES_depth_texture support
+static bool DetermineDepthTextureOESSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_DEPTH_COMPONENT16,
+#if !defined(ANGLE_PLATFORM_IOS) && \
+ (!defined(ANGLE_PLATFORM_MACCATALYST) || !defined(ANGLE_CPU_ARM64))
+ // anglebug.com/6082
+ // TODO(dino): Temporarily Removing the need for GL_DEPTH_COMPONENT32_OES
+ // because it is not supported on iOS.
+ // TODO(dino): I think this needs to be a runtime check when running an iOS app on Mac.
+ GL_DEPTH_COMPONENT32_OES,
+#endif
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, true, false);
+}
+
+// Check for GL_OES_depth24
+static bool DetermineDepth24OESSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_DEPTH_COMPONENT24_OES,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, false, false, true, false);
+}
+
+// Check for GL_OES_depth32 support
+static bool DetermineDepth32Support(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_DEPTH_COMPONENT32_OES,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, false, true, true, false);
+}
+
+// Check for GL_CHROMIUM_color_buffer_float_rgb support
+static bool DetermineColorBufferFloatRGBSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_RGB32F,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, false, false);
+}
+
+// Check for GL_CHROMIUM_color_buffer_float_rgba support
+static bool DetermineColorBufferFloatRGBASupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_RGBA32F,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, true, false);
+}
+
+// Check for GL_EXT_color_buffer_float support
+static bool DetermineColorBufferFloatSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum nonBlendableFormats[] = {
+ GL_R32F,
+ GL_RG32F,
+ GL_RGBA32F,
+ };
+
+ constexpr GLenum blendableFormats[] = {
+ GL_R16F,
+ GL_RG16F,
+ GL_RGBA16F,
+ GL_R11F_G11F_B10F,
+ };
+
+ return GetFormatSupport(textureCaps, nonBlendableFormats, true, false, true, true, false) &&
+ GetFormatSupport(textureCaps, blendableFormats, true, false, true, true, true);
+}
+
+// Check for GL_EXT_float_blend support
+static bool DetermineFloatBlendSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_R32F,
+ GL_RG32F,
+ GL_RGBA32F,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, false, true, true, true);
+}
+
+// Check for GL_EXT_texture_norm16 support
+static bool DetermineTextureNorm16Support(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFilterFormats[] = {
+ GL_R16_EXT, GL_RG16_EXT, GL_RGB16_EXT, GL_RGBA16_EXT,
+ GL_R16_SNORM_EXT, GL_RG16_SNORM_EXT, GL_RGB16_SNORM_EXT, GL_RGBA16_SNORM_EXT,
+ };
+
+ constexpr GLenum requiredRenderFormats[] = {
+ GL_R16_EXT,
+ GL_RG16_EXT,
+ GL_RGBA16_EXT,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFilterFormats, true, true, false, false, false) &&
+ GetFormatSupport(textureCaps, requiredRenderFormats, true, false, true, true, false);
+}
+
+// Check for EXT_texture_compression_rgtc support
+static bool DetermineRGTCTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RED_RGTC1_EXT, GL_COMPRESSED_SIGNED_RED_RGTC1_EXT,
+ GL_COMPRESSED_RED_GREEN_RGTC2_EXT, GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT};
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for EXT_texture_compression_bptc support
+static bool DetermineBPTCTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGBA_BPTC_UNORM_EXT, GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT,
+ GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT};
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_IMG_texture_compression_pvrtc support
+static bool DeterminePVRTCTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG, GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG,
+ GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG, GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG};
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Check for GL_EXT_pvrtc_sRGB support
+static bool DeterminePVRTCsRGBTextureSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT, GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT,
+ GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT, GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT};
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+bool DetermineCompressedTextureETCSupport(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {GL_COMPRESSED_R11_EAC,
+ GL_COMPRESSED_SIGNED_R11_EAC,
+ GL_COMPRESSED_RG11_EAC,
+ GL_COMPRESSED_SIGNED_RG11_EAC,
+ GL_COMPRESSED_RGB8_ETC2,
+ GL_COMPRESSED_SRGB8_ETC2,
+ GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
+ GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
+ GL_COMPRESSED_RGBA8_ETC2_EAC,
+ GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC};
+
+ return GetFormatSupport(textureCaps, requiredFormats, true, true, false, false, false);
+}
+
+// Checks for GL_OES_texture_stencil8 support
+static bool DetermineStencilIndex8Support(const TextureCapsMap &textureCaps)
+{
+ constexpr GLenum requiredFormats[] = {
+ GL_STENCIL_INDEX8,
+ };
+
+ return GetFormatSupport(textureCaps, requiredFormats, false, false, true, false, false);
+}
+
+void Extensions::setTextureExtensionSupport(const TextureCapsMap &textureCaps)
+{
+ // TODO(ynovikov): rgb8Rgba8OES, colorBufferHalfFloatEXT, textureHalfFloatOES,
+ // textureHalfFloatLinearOES, textureFloatOES, textureFloatLinearOES, textureRgEXT, sRGB,
+ // colorBufferFloatRgbCHROMIUM, colorBufferFloatRgbaCHROMIUM and colorBufferFloatEXT were
+ // verified. Verify the rest.
+ packedDepthStencilOES = DeterminePackedDepthStencilSupport(textureCaps);
+ rgb8Rgba8OES = DetermineRGB8AndRGBA8TextureSupport(textureCaps);
+ readDepthNV = DetermineReadDepthSupport(textureCaps);
+ readStencilNV = DetermineReadStencilSupport(textureCaps);
+ depthBufferFloat2NV = DetermineDepthBufferFloat2Support(textureCaps);
+ textureFormatBGRA8888EXT = DetermineBGRA8TextureSupport(textureCaps);
+ readFormatBgraEXT = DetermineBGRAReadFormatSupport(textureCaps);
+ textureHalfFloatOES = DetermineHalfFloatTextureSupport(textureCaps);
+ textureHalfFloatLinearOES =
+ DetermineHalfFloatTextureFilteringSupport(textureCaps, textureHalfFloatOES);
+ textureFloatOES = DetermineFloatTextureSupport(textureCaps);
+ textureFloatLinearOES = DetermineFloatTextureFilteringSupport(textureCaps, textureFloatOES);
+ textureRgEXT = DetermineRGTextureSupport(textureCaps, textureHalfFloatOES, textureFloatOES);
+ colorBufferHalfFloatEXT =
+ textureHalfFloatOES && DetermineColorBufferHalfFloatSupport(textureCaps);
+ textureType2101010REVEXT = DetermineTextureFormat2101010Support(textureCaps);
+ textureCompressionDxt1EXT = DetermineDXT1TextureSupport(textureCaps);
+ textureCompressionDxt3ANGLE = DetermineDXT3TextureSupport(textureCaps);
+ textureCompressionDxt5ANGLE = DetermineDXT5TextureSupport(textureCaps);
+ textureCompressionS3tcSrgbEXT = DetermineS3TCsRGBTextureSupport(textureCaps);
+ textureCompressionAstcLdrKHR = DetermineASTCLDRTextureSupport(textureCaps);
+ textureCompressionAstcOES = DetermineASTCOESTExtureSupport(textureCaps);
+ compressedETC1RGB8TextureOES = DetermineETC1RGB8TextureSupport(textureCaps);
+ compressedETC2RGB8TextureOES = DetermineETC2RGB8TextureSupport(textureCaps);
+ compressedETC2SRGB8TextureOES = DetermineETC2sRGB8TextureSupport(textureCaps);
+ compressedETC2PunchthroughARGBA8TextureOES =
+ DetermineETC2PunchthroughARGB8TextureSupport(textureCaps);
+ compressedETC2PunchthroughASRGB8AlphaTextureOES =
+ DetermineETC2PunchthroughAsRGB8AlphaTextureSupport(textureCaps);
+ compressedETC2RGBA8TextureOES = DetermineETC2RGBA8TextureSupport(textureCaps);
+ compressedETC2SRGB8Alpha8TextureOES = DetermineETC2sRGB8Alpha8TextureSupport(textureCaps);
+ compressedEACR11UnsignedTextureOES = DetermineEACR11UnsignedTextureSupport(textureCaps);
+ compressedEACR11SignedTextureOES = DetermineEACR11SignedTextureSupport(textureCaps);
+ compressedEACRG11UnsignedTextureOES = DetermineEACRG11UnsignedTextureSupport(textureCaps);
+ compressedEACRG11SignedTextureOES = DetermineEACRG11SignedTextureSupport(textureCaps);
+ sRGBEXT = DetermineSRGBTextureSupport(textureCaps);
+ textureSRGBR8EXT = DetermineSRGBR8TextureSupport(textureCaps);
+ textureSRGBRG8EXT = DetermineSRGBRG8TextureSupport(textureCaps);
+ depthTextureANGLE = DetermineDepthTextureANGLESupport(textureCaps);
+ depthTextureOES = DetermineDepthTextureOESSupport(textureCaps);
+ depth24OES = DetermineDepth24OESSupport(textureCaps);
+ depth32OES = DetermineDepth32Support(textureCaps);
+ colorBufferFloatRgbCHROMIUM = DetermineColorBufferFloatRGBSupport(textureCaps);
+ colorBufferFloatRgbaCHROMIUM = DetermineColorBufferFloatRGBASupport(textureCaps);
+ colorBufferFloatEXT = DetermineColorBufferFloatSupport(textureCaps);
+ floatBlendEXT = DetermineFloatBlendSupport(textureCaps);
+ textureNorm16EXT = DetermineTextureNorm16Support(textureCaps);
+ textureCompressionRgtcEXT = DetermineRGTCTextureSupport(textureCaps);
+ textureCompressionBptcEXT = DetermineBPTCTextureSupport(textureCaps);
+ textureCompressionPvrtcIMG = DeterminePVRTCTextureSupport(textureCaps);
+ pvrtcSRGBEXT = DeterminePVRTCsRGBTextureSupport(textureCaps);
+ textureStencil8OES = DetermineStencilIndex8Support(textureCaps);
+}
+
+TypePrecision::TypePrecision() = default;
+
+TypePrecision::TypePrecision(const TypePrecision &other) = default;
+
+TypePrecision &TypePrecision::operator=(const TypePrecision &other) = default;
+
+void TypePrecision::setIEEEFloat()
+{
+ range = {{127, 127}};
+ precision = 23;
+}
+
+void TypePrecision::setIEEEHalfFloat()
+{
+ range = {{15, 15}};
+ precision = 10;
+}
+
+void TypePrecision::setTwosComplementInt(unsigned int bits)
+{
+ range = {{static_cast<GLint>(bits) - 1, static_cast<GLint>(bits) - 2}};
+ precision = 0;
+}
+
+void TypePrecision::setSimulatedFloat(unsigned int r, unsigned int p)
+{
+ range = {{static_cast<GLint>(r), static_cast<GLint>(r)}};
+ precision = static_cast<GLint>(p);
+}
+
+void TypePrecision::setSimulatedInt(unsigned int r)
+{
+ range = {{static_cast<GLint>(r), static_cast<GLint>(r)}};
+ precision = 0;
+}
+
+void TypePrecision::get(GLint *returnRange, GLint *returnPrecision) const
+{
+ std::copy(range.begin(), range.end(), returnRange);
+ *returnPrecision = precision;
+}
+
+Caps::Caps() = default;
+Caps::Caps(const Caps &other) = default;
+Caps::~Caps() = default;
+Caps &Caps::operator=(const Caps &other) = default;
+
+Caps GenerateMinimumCaps(const Version &clientVersion, const Extensions &extensions)
+{
+ Caps caps;
+
+ // GLES1 emulation (Minimums taken from Table 6.20 / 6.22 (ES 1.1 spec))
+ if (clientVersion < Version(2, 0))
+ {
+ caps.maxMultitextureUnits = 2;
+ caps.maxLights = 8;
+ caps.maxClipPlanes = 1;
+
+ caps.maxModelviewMatrixStackDepth = 16;
+ caps.maxProjectionMatrixStackDepth = 2;
+ caps.maxTextureMatrixStackDepth = 2;
+
+ caps.minSmoothPointSize = 1.0f;
+ caps.maxSmoothPointSize = 1.0f;
+ }
+
+ if (clientVersion >= Version(2, 0))
+ {
+ // Table 6.18
+ caps.max2DTextureSize = 64;
+ caps.maxCubeMapTextureSize = 16;
+ caps.maxViewportWidth = caps.max2DTextureSize;
+ caps.maxViewportHeight = caps.max2DTextureSize;
+ caps.minAliasedPointSize = 1;
+ caps.maxAliasedPointSize = 1;
+ caps.minAliasedLineWidth = 1;
+ caps.maxAliasedLineWidth = 1;
+
+ // Table 6.19
+ caps.vertexHighpFloat.setSimulatedFloat(62, 16);
+ caps.vertexMediumpFloat.setSimulatedFloat(14, 10);
+ caps.vertexLowpFloat.setSimulatedFloat(1, 8);
+ caps.vertexHighpInt.setSimulatedInt(16);
+ caps.vertexMediumpInt.setSimulatedInt(10);
+ caps.vertexLowpInt.setSimulatedInt(8);
+ caps.fragmentHighpFloat.setSimulatedFloat(62, 16);
+ caps.fragmentMediumpFloat.setSimulatedFloat(14, 10);
+ caps.fragmentLowpFloat.setSimulatedFloat(1, 8);
+ caps.fragmentHighpInt.setSimulatedInt(16);
+ caps.fragmentMediumpInt.setSimulatedInt(10);
+ caps.fragmentLowpInt.setSimulatedInt(8);
+
+ // Table 6.20
+ caps.maxVertexAttributes = 8;
+ caps.maxVertexUniformVectors = 128;
+ caps.maxVaryingVectors = 8;
+ caps.maxCombinedTextureImageUnits = 8;
+ caps.maxShaderTextureImageUnits[ShaderType::Fragment] = 8;
+ caps.maxFragmentUniformVectors = 16;
+ caps.maxRenderbufferSize = 1;
+
+ // Table 3.35
+ caps.maxSamples = 4;
+ }
+
+ if (clientVersion >= Version(3, 0))
+ {
+ // Table 6.28
+ caps.maxElementIndex = (1 << 24) - 1;
+ caps.max3DTextureSize = 256;
+ caps.max2DTextureSize = 2048;
+ caps.maxArrayTextureLayers = 256;
+ caps.maxLODBias = 2.0f;
+ caps.maxCubeMapTextureSize = 2048;
+ caps.maxRenderbufferSize = 2048;
+ caps.maxDrawBuffers = 4;
+ caps.maxColorAttachments = 4;
+ caps.maxViewportWidth = caps.max2DTextureSize;
+ caps.maxViewportHeight = caps.max2DTextureSize;
+
+ // Table 6.29
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_R11_EAC);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_SIGNED_R11_EAC);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_RG11_EAC);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_SIGNED_RG11_EAC);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_RGB8_ETC2);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_SRGB8_ETC2);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_RGBA8_ETC2_EAC);
+ caps.compressedTextureFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC);
+ caps.vertexHighpFloat.setIEEEFloat();
+ caps.vertexHighpInt.setTwosComplementInt(32);
+ caps.vertexMediumpInt.setTwosComplementInt(16);
+ caps.vertexLowpInt.setTwosComplementInt(8);
+ caps.fragmentHighpFloat.setIEEEFloat();
+ caps.fragmentHighpInt.setSimulatedInt(32);
+ caps.fragmentMediumpInt.setTwosComplementInt(16);
+ caps.fragmentLowpInt.setTwosComplementInt(8);
+ caps.maxServerWaitTimeout = 0;
+
+ // Table 6.31
+ caps.maxVertexAttributes = 16;
+ caps.maxShaderUniformComponents[ShaderType::Vertex] = 1024;
+ caps.maxVertexUniformVectors = 256;
+ caps.maxShaderUniformBlocks[ShaderType::Vertex] = limits::kMinimumShaderUniformBlocks;
+ caps.maxVertexOutputComponents = limits::kMinimumVertexOutputComponents;
+ caps.maxShaderTextureImageUnits[ShaderType::Vertex] = 16;
+
+ // Table 6.32
+ caps.maxShaderUniformComponents[ShaderType::Fragment] = 896;
+ caps.maxFragmentUniformVectors = 224;
+ caps.maxShaderUniformBlocks[ShaderType::Fragment] = limits::kMinimumShaderUniformBlocks;
+ caps.maxFragmentInputComponents = 60;
+ caps.maxShaderTextureImageUnits[ShaderType::Fragment] = 16;
+ caps.minProgramTexelOffset = -8;
+ caps.maxProgramTexelOffset = 7;
+
+ // Table 6.33
+ caps.maxUniformBufferBindings = 24;
+ caps.maxUniformBlockSize = 16384;
+ caps.uniformBufferOffsetAlignment = 256;
+ caps.maxCombinedUniformBlocks = 24;
+ caps.maxVaryingComponents = 60;
+ caps.maxVaryingVectors = 15;
+ caps.maxCombinedTextureImageUnits = 32;
+
+ // Table 6.34
+ caps.maxTransformFeedbackInterleavedComponents = 64;
+ caps.maxTransformFeedbackSeparateAttributes = 4;
+ caps.maxTransformFeedbackSeparateComponents = 4;
+ }
+
+ if (clientVersion >= Version(3, 1))
+ {
+ // Table 20.40
+ caps.maxFramebufferWidth = 2048;
+ caps.maxFramebufferHeight = 2048;
+ caps.maxFramebufferSamples = 4;
+ caps.maxSampleMaskWords = 1;
+ caps.maxColorTextureSamples = 1;
+ caps.maxDepthTextureSamples = 1;
+ caps.maxIntegerSamples = 1;
+
+ // Table 20.41
+ caps.maxVertexAttribRelativeOffset = 2047;
+ caps.maxVertexAttribBindings = 16;
+ caps.maxVertexAttribStride = 2048;
+
+ // Table 20.43
+ caps.maxShaderAtomicCounterBuffers[ShaderType::Vertex] = 0;
+ caps.maxShaderAtomicCounters[ShaderType::Vertex] = 0;
+ caps.maxShaderImageUniforms[ShaderType::Vertex] = 0;
+ caps.maxShaderStorageBlocks[ShaderType::Vertex] = 0;
+
+ // Table 20.44
+ caps.maxShaderUniformComponents[ShaderType::Fragment] = 1024;
+ caps.maxFragmentUniformVectors = 256;
+ caps.maxShaderAtomicCounterBuffers[ShaderType::Fragment] = 0;
+ caps.maxShaderAtomicCounters[ShaderType::Fragment] = 0;
+ caps.maxShaderImageUniforms[ShaderType::Fragment] = 0;
+ caps.maxShaderStorageBlocks[ShaderType::Fragment] = 0;
+ caps.minProgramTextureGatherOffset = 0;
+ caps.maxProgramTextureGatherOffset = 0;
+
+ // Table 20.45
+ caps.maxComputeWorkGroupCount = {{65535, 65535, 65535}};
+ caps.maxComputeWorkGroupSize = {{128, 128, 64}};
+ caps.maxComputeWorkGroupInvocations = 12;
+ caps.maxShaderUniformBlocks[ShaderType::Compute] = limits::kMinimumShaderUniformBlocks;
+ caps.maxShaderTextureImageUnits[ShaderType::Compute] = 16;
+ caps.maxComputeSharedMemorySize = 16384;
+ caps.maxShaderUniformComponents[ShaderType::Compute] = 1024;
+ caps.maxShaderAtomicCounterBuffers[ShaderType::Compute] = 1;
+ caps.maxShaderAtomicCounters[ShaderType::Compute] = 8;
+ caps.maxShaderImageUniforms[ShaderType::Compute] = 4;
+ caps.maxShaderStorageBlocks[ShaderType::Compute] = 4;
+
+ // Table 20.46
+ caps.maxUniformBufferBindings = 36;
+ caps.maxCombinedTextureImageUnits = 48;
+ caps.maxCombinedShaderOutputResources = 4;
+
+ // Table 20.47
+ caps.maxUniformLocations = 1024;
+ caps.maxAtomicCounterBufferBindings = 1;
+ caps.maxAtomicCounterBufferSize = 32;
+ caps.maxCombinedAtomicCounterBuffers = 1;
+ caps.maxCombinedAtomicCounters = 8;
+ caps.maxImageUnits = 4;
+ caps.maxCombinedImageUniforms = 4;
+ caps.maxShaderStorageBufferBindings = 4;
+ caps.maxShaderStorageBlockSize = 1 << 27;
+ caps.maxCombinedShaderStorageBlocks = 4;
+ caps.shaderStorageBufferOffsetAlignment = 256;
+ }
+
+ if (extensions.textureRectangleANGLE)
+ {
+ caps.maxRectangleTextureSize = 64;
+ }
+
+ if (extensions.geometryShaderAny())
+ {
+ // Table 20.40 (GL_EXT_geometry_shader)
+ caps.maxFramebufferLayers = 256;
+ caps.layerProvokingVertex = GL_LAST_VERTEX_CONVENTION_EXT;
+
+ // Table 20.43gs (GL_EXT_geometry_shader)
+ caps.maxShaderUniformComponents[ShaderType::Geometry] = 1024;
+ caps.maxShaderUniformBlocks[ShaderType::Geometry] = limits::kMinimumShaderUniformBlocks;
+ caps.maxGeometryInputComponents = 64;
+ caps.maxGeometryOutputComponents = 64;
+ caps.maxGeometryOutputVertices = 256;
+ caps.maxGeometryTotalOutputComponents = 1024;
+ caps.maxShaderTextureImageUnits[ShaderType::Geometry] = 16;
+ caps.maxShaderAtomicCounterBuffers[ShaderType::Geometry] = 0;
+ caps.maxShaderAtomicCounters[ShaderType::Geometry] = 0;
+ caps.maxShaderStorageBlocks[ShaderType::Geometry] = 0;
+ caps.maxGeometryShaderInvocations = 32;
+
+ // Table 20.46 (GL_EXT_geometry_shader)
+ caps.maxShaderImageUniforms[ShaderType::Geometry] = 0;
+
+ // Table 20.46 (GL_EXT_geometry_shader)
+ caps.maxUniformBufferBindings = 48;
+ caps.maxCombinedUniformBlocks = 36;
+ caps.maxCombinedTextureImageUnits = 64;
+ }
+
+ if (extensions.tessellationShaderEXT)
+ {
+ // Table 20.43 "Implementation Dependent Tessellation Shader Limits"
+ caps.maxTessControlInputComponents = 64;
+ caps.maxTessControlOutputComponents = 64;
+ caps.maxShaderTextureImageUnits[ShaderType::TessControl] = 16;
+ caps.maxShaderUniformComponents[ShaderType::TessControl] = 1024;
+ caps.maxTessControlTotalOutputComponents = 2048;
+ caps.maxShaderImageUniforms[ShaderType::TessControl] = 0;
+ caps.maxShaderAtomicCounters[ShaderType::TessControl] = 0;
+ caps.maxShaderAtomicCounterBuffers[ShaderType::TessControl] = 0;
+
+ caps.maxTessPatchComponents = 120;
+ caps.maxPatchVertices = 32;
+ caps.maxTessGenLevel = 64;
+
+ caps.maxTessEvaluationInputComponents = 64;
+ caps.maxTessEvaluationOutputComponents = 64;
+ caps.maxShaderTextureImageUnits[ShaderType::TessEvaluation] = 16;
+ caps.maxShaderUniformComponents[ShaderType::TessEvaluation] = 1024;
+ caps.maxShaderImageUniforms[ShaderType::TessEvaluation] = 0;
+ caps.maxShaderAtomicCounters[ShaderType::TessEvaluation] = 0;
+ caps.maxShaderAtomicCounterBuffers[ShaderType::TessEvaluation] = 0;
+
+ // Table 20.46 "Implementation Dependent Aggregate Shader Limits"
+ caps.maxUniformBufferBindings = 72;
+ caps.maxCombinedUniformBlocks = 60;
+ caps.maxCombinedTextureImageUnits = 96;
+ }
+
+ for (ShaderType shaderType : AllShaderTypes())
+ {
+ caps.maxCombinedShaderUniformComponents[shaderType] =
+ caps.maxShaderUniformBlocks[shaderType] *
+ static_cast<GLuint>(caps.maxUniformBlockSize / 4) +
+ caps.maxShaderUniformComponents[shaderType];
+ }
+
+ return caps;
+}
+} // namespace gl
+
+namespace egl
+{
+
+Caps::Caps() = default;
+
+DisplayExtensions::DisplayExtensions() = default;
+
+std::vector<std::string> DisplayExtensions::getStrings() const
+{
+ std::vector<std::string> extensionStrings;
+
+ // clang-format off
+ // | Extension name | Supported flag | Output vector |
+ InsertExtensionString("EGL_EXT_create_context_robustness", createContextRobustness, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_d3d_share_handle_client_buffer", d3dShareHandleClientBuffer, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_d3d_texture_client_buffer", d3dTextureClientBuffer, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_surface_d3d_texture_2d_share_handle", surfaceD3DTexture2DShareHandle, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_query_surface_pointer", querySurfacePointer, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_window_fixed_size", windowFixedSize, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_keyed_mutex", keyedMutex, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_surface_orientation", surfaceOrientation, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_direct_composition", directComposition, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_windows_ui_composition", windowsUIComposition, &extensionStrings);
+ InsertExtensionString("EGL_NV_post_sub_buffer", postSubBuffer, &extensionStrings);
+ InsertExtensionString("EGL_KHR_create_context", createContext, &extensionStrings);
+ InsertExtensionString("EGL_KHR_image", image, &extensionStrings);
+ InsertExtensionString("EGL_KHR_image_base", imageBase, &extensionStrings);
+ InsertExtensionString("EGL_KHR_image_pixmap", imagePixmap, &extensionStrings);
+ InsertExtensionString("EGL_EXT_image_gl_colorspace", imageGlColorspace, &extensionStrings);
+ InsertExtensionString("EGL_KHR_gl_colorspace", glColorspace, &extensionStrings);
+ InsertExtensionString("EGL_EXT_gl_colorspace_scrgb", glColorspaceScrgb, &extensionStrings);
+ InsertExtensionString("EGL_EXT_gl_colorspace_scrgb_linear", glColorspaceScrgbLinear, &extensionStrings);
+ InsertExtensionString("EGL_EXT_gl_colorspace_display_p3", glColorspaceDisplayP3, &extensionStrings);
+ InsertExtensionString("EGL_EXT_gl_colorspace_display_p3_linear", glColorspaceDisplayP3Linear, &extensionStrings);
+ InsertExtensionString("EGL_EXT_gl_colorspace_display_p3_passthrough", glColorspaceDisplayP3Passthrough, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_colorspace_attribute_passthrough", eglColorspaceAttributePassthroughANGLE, &extensionStrings);
+ InsertExtensionString("EGL_KHR_gl_texture_2D_image", glTexture2DImage, &extensionStrings);
+ InsertExtensionString("EGL_KHR_gl_texture_cubemap_image", glTextureCubemapImage, &extensionStrings);
+ InsertExtensionString("EGL_KHR_gl_texture_3D_image", glTexture3DImage, &extensionStrings);
+ InsertExtensionString("EGL_KHR_gl_renderbuffer_image", glRenderbufferImage, &extensionStrings);
+ InsertExtensionString("EGL_KHR_get_all_proc_addresses", getAllProcAddresses, &extensionStrings);
+ InsertExtensionString("EGL_KHR_stream", stream, &extensionStrings);
+ InsertExtensionString("EGL_KHR_stream_consumer_gltexture", streamConsumerGLTexture, &extensionStrings);
+ InsertExtensionString("EGL_NV_stream_consumer_gltexture_yuv", streamConsumerGLTextureYUV, &extensionStrings);
+ InsertExtensionString("EGL_KHR_fence_sync", fenceSync, &extensionStrings);
+ InsertExtensionString("EGL_KHR_wait_sync", waitSync, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_stream_producer_d3d_texture", streamProducerD3DTexture, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_create_context_webgl_compatibility", createContextWebGLCompatibility, &extensionStrings);
+ InsertExtensionString("EGL_CHROMIUM_create_context_bind_generates_resource", createContextBindGeneratesResource, &extensionStrings);
+ InsertExtensionString("EGL_CHROMIUM_sync_control", syncControlCHROMIUM, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_sync_control_rate", syncControlRateANGLE, &extensionStrings);
+ InsertExtensionString("EGL_KHR_swap_buffers_with_damage", swapBuffersWithDamage, &extensionStrings);
+ InsertExtensionString("EGL_EXT_pixel_format_float", pixelFormatFloat, &extensionStrings);
+ InsertExtensionString("EGL_KHR_surfaceless_context", surfacelessContext, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_display_texture_share_group", displayTextureShareGroup, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_display_semaphore_share_group", displaySemaphoreShareGroup, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_create_context_client_arrays", createContextClientArrays, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_program_cache_control", programCacheControlANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_robust_resource_initialization", robustResourceInitializationANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_iosurface_client_buffer", iosurfaceClientBuffer, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_metal_texture_client_buffer", mtlTextureClientBuffer, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_create_context_extensions_enabled", createContextExtensionsEnabled, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_presentation_time", presentationTime, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_blob_cache", blobCache, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_framebuffer_target", framebufferTargetANDROID, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_image_native_buffer", imageNativeBuffer, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_get_frame_timestamps", getFrameTimestamps, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_timestamp_surface_attribute", timestampSurfaceAttributeANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_recordable", recordable, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_power_preference", powerPreference, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_image_d3d11_texture", imageD3D11Texture, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_create_native_client_buffer", createNativeClientBufferANDROID, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_get_native_client_buffer", getNativeClientBufferANDROID, &extensionStrings);
+ InsertExtensionString("EGL_ANDROID_native_fence_sync", nativeFenceSyncANDROID, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_create_context_backwards_compatible", createContextBackwardsCompatible, &extensionStrings);
+ InsertExtensionString("EGL_KHR_no_config_context", noConfigContext, &extensionStrings);
+ InsertExtensionString("EGL_IMG_context_priority", contextPriority, &extensionStrings);
+ InsertExtensionString("EGL_KHR_create_context_no_error", createContextNoError, &extensionStrings);
+ InsertExtensionString("EGL_EXT_image_dma_buf_import", imageDmaBufImportEXT, &extensionStrings);
+ InsertExtensionString("EGL_EXT_image_dma_buf_import_modifiers", imageDmaBufImportModifiersEXT, &extensionStrings);
+ InsertExtensionString("EGL_NOK_texture_from_pixmap", textureFromPixmapNOK, &extensionStrings);
+ InsertExtensionString("EGL_NV_robustness_video_memory_purge", robustnessVideoMemoryPurgeNV, &extensionStrings);
+ InsertExtensionString("EGL_KHR_reusable_sync", reusableSyncKHR, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_external_context_and_surface", externalContextAndSurface, &extensionStrings);
+ InsertExtensionString("EGL_EXT_buffer_age", bufferAgeEXT, &extensionStrings);
+ InsertExtensionString("EGL_KHR_mutable_render_buffer", mutableRenderBufferKHR, &extensionStrings);
+ InsertExtensionString("EGL_EXT_protected_content", protectedContentEXT, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_create_surface_swap_interval", createSurfaceSwapIntervalANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_context_virtualization", contextVirtualizationANGLE, &extensionStrings);
+ InsertExtensionString("EGL_KHR_lock_surface3", lockSurface3KHR, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_vulkan_image", vulkanImageANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_metal_create_context_ownership_identity", metalCreateContextOwnershipIdentityANGLE, &extensionStrings);
+ InsertExtensionString("EGL_KHR_partial_update", partialUpdateKHR, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_metal_shared_event_sync", mtlSyncSharedEventANGLE, &extensionStrings);
+ // clang-format on
+
+ return extensionStrings;
+}
+
+DeviceExtensions::DeviceExtensions() = default;
+
+std::vector<std::string> DeviceExtensions::getStrings() const
+{
+ std::vector<std::string> extensionStrings;
+
+ // clang-format off
+ // | Extension name | Supported flag | Output vector |
+ InsertExtensionString("EGL_ANGLE_device_d3d", deviceD3D, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_device_cgl", deviceCGL, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_device_eagl", deviceEAGL, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_device_metal", deviceMetal, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_device_vulkan", deviceVulkan, &extensionStrings);
+
+ // clang-format on
+
+ return extensionStrings;
+}
+
+ClientExtensions::ClientExtensions() = default;
+ClientExtensions::ClientExtensions(const ClientExtensions &other) = default;
+
+std::vector<std::string> ClientExtensions::getStrings() const
+{
+ std::vector<std::string> extensionStrings;
+
+ // clang-format off
+ // | Extension name | Supported flag | Output vector |
+ InsertExtensionString("EGL_EXT_client_extensions", clientExtensions, &extensionStrings);
+ InsertExtensionString("EGL_EXT_device_query", deviceQueryEXT, &extensionStrings);
+ InsertExtensionString("EGL_EXT_platform_base", platformBase, &extensionStrings);
+ InsertExtensionString("EGL_EXT_platform_device", platformDevice, &extensionStrings);
+ InsertExtensionString("EGL_KHR_platform_gbm", platformGbmKHR, &extensionStrings);
+ InsertExtensionString("EGL_EXT_platform_wayland", platformWaylandEXT, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle", platformANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_d3d", platformANGLED3D, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_d3d11on12", platformANGLED3D11ON12, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_device_type_egl_angle", platformANGLEDeviceTypeEGLANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_device_type_swiftshader", platformANGLEDeviceTypeSwiftShader, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_opengl", platformANGLEOpenGL, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_null", platformANGLENULL, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_vulkan", platformANGLEVulkan, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_metal", platformANGLEMetal, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_device_context_volatile_eagl", platformANGLEDeviceContextVolatileEagl, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_device_context_volatile_cgl", platformANGLEDeviceContextVolatileCgl, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_platform_angle_device_id", platformANGLEDeviceId, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_device_creation", deviceCreation, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_device_creation_d3d11", deviceCreationD3D11, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_x11_visual", x11Visual, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_experimental_present_path", experimentalPresentPath, &extensionStrings);
+ InsertExtensionString("EGL_KHR_client_get_all_proc_addresses", clientGetAllProcAddresses, &extensionStrings);
+ InsertExtensionString("EGL_KHR_debug", debug, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_feature_control", featureControlANGLE, &extensionStrings);
+ InsertExtensionString("EGL_ANGLE_display_power_preference", displayPowerPreferenceANGLE, &extensionStrings);
+ // clang-format on
+
+ return extensionStrings;
+}
+
+} // namespace egl