diff options
Diffstat (limited to 'gfx/angle/checkout/src/libANGLE/Caps.cpp')
| -rw-r--r-- | gfx/angle/checkout/src/libANGLE/Caps.cpp | 1371 |
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 |