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Quelle formatutils.cppSprache: C |
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// // Copyright 2013 The ANGLE Project Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // // formatutils.cpp: Queries for GL image formats. #include "libANGLE/formatutils.h" #include "anglebase/no_destructor.h" #include "common/mathutil.h" #include "gpu_info_util/SystemInfo.h" #include "libANGLE/Context.h" #include "libANGLE/Framebuffer.h" using namespace angle; namespace gl { // ES2 requires that format is equal to internal format at all glTex*Image2D entry points and th // implementation can decide the true, sized, internal format. The ES2FormatMap determines t // internal format for all valid format and type combinations. GLenum GetSizedFormatInternal(GLenum format, GLenum type); namespace { bool CheckedMathResult(const CheckedNumeric<GLuint> &value, GLuint *resultOut) { if (!value.IsValid()) { return false; } else { *resultOut = value.ValueOrDie(); return true; } } constexpr uint32_t PackTypeInfo(GLuint bytes, bool specialized) { // static_assert within constexpr requires c++17 // static_assert(isPow2(bytes)); return bytes | (rx::Log2(bytes) << 8) | (specialized << 16); } } // anonymous namespace FormatType::FormatType() : format(GL_NONE), type(GL_NONE) {} FormatType::FormatType(GLenum format_, GLenum type_) : format(format_), type(type_) {} bool FormatType::operator<(const FormatType &other) const { if (format != other.format) return format < other.format; return type < other.type; } bool operator<(const Type &a, const Type &b) { return memcmp(&a, &b, sizeof(Type)) < 0; } // Information about internal formats static bool AlwaysSupported(const Version &, const Extensions &) { return true; } static bool NeverSupported(const Version &, const Extensions &) { return false; } static bool RequireES1(const Version &clientVersion, const Extensions &extensions) { return clientVersion.major == 1; } template <GLuint minCoreGLMajorVersion, GLuint minCoreGLMinorVersion> static bool RequireES(const Version &clientVersion, const Extensions &) { return clientVersion >= Version(minCoreGLMajorVersion, minCoreGLMinorVersion); } // Check support for a single extension template <ExtensionBool bool1> static bool RequireExt(const Version &, const Extensions &extensions) { return extensions.*bool1; } // Check for a minimum client version or a single extension template <GLuint minCoreGLMajorVersion, GLuint minCoreGLMinorVersion, ExtensionBool boo static bool RequireESOrExt(const Version &clientVersion, const Extensions &extensions) { return clientVersion >= Version(minCoreGLMajorVersion, minCoreGLMinorVersion) || extensions.*bool1; } // Check for a minimum client version or two extensions template <GLuint minCoreGLMajorVersion, GLuint minCoreGLMinorVersion, ExtensionBool bool1, ExtensionBool bool2> static bool RequireESOrExtAndExt(const Version &clientVersion, const Extensions &extensions) { return clientVersion >= Version(minCoreGLMajorVersion, minCoreGLMinorVersion) || (extensions.*bool1 && extensions.*bool2); } // Check for a minimum client version or at least one of two extensions template <GLuint minCoreGLMajorVersion, GLuint minCoreGLMinorVersion, ExtensionBool bool1, ExtensionBool bool2> static bool RequireESOrExtOrExt(const Version &clientVersion, const Extensions &extensions) { return clientVersion >= Version(minCoreGLMajorVersion, minCoreGLMinorVersion) || extensions.*bool1 || extensions.*bool2; } // Check support for two extensions template <ExtensionBool bool1, ExtensionBool bool2> static bool RequireExtAndExt(const Version &, const Extensions &extensions) { return extensions.*bool1 && extensions.*bool2; } // Check support for either of two extensions template <ExtensionBool bool1, ExtensionBool bool2> static bool RequireExtOrExt(const Version &, const Extensions &extensions) { return extensions.*bool1 || extensions.*bool2; } // Check support for any of three extensions template <ExtensionBool bool1, ExtensionBool bool2, ExtensionBool bool3> static bool RequireExtOrExtOrExt(const Version &, const Extensions &extensions) { return extensions.*bool1 || extensions.*bool2 || extensions.*bool3; } // R8, RG8 static bool SizedRGSupport(const Version &clientVersion, const Extensions &extensions) { return clientVersion >= Version(3, 0) || (extensions.textureStorageEXT && extensions.textureRgEXT); } // R16F, RG16F with HALF_FLOAT_OES type static bool SizedHalfFloatOESRGSupport(const Version &clientVersion, const Extensions &extensions) { return extensions.textureStorageEXT && extensions.textureHalfFloatOES && extensions.textureRgEXT; } static bool SizedHalfFloatOESRGTextureAttachmentSupport(const Version &clientVersion, const Extensions &extensions) { return SizedHalfFloatOESRGSupport(clientVersion, extensions) && extensions.colorBufferHalfFloatEXT; } // R16F, RG16F with either HALF_FLOAT_OES or HALF_FLOAT types static bool SizedHalfFloatRGSupport(const Version &clientVersion, const Extensions &extensions) { // HALF_FLOAT if (clientVersion >= Version(3, 0)) { return true; } // HALF_FLOAT_OES else { return SizedHalfFloatOESRGSupport(clientVersion, extensions); } } static bool SizedHalfFloatRGTextureAttachmentSupport(const Version &clientVersion, const Extensions &extensions) { // HALF_FLOAT if (clientVersion >= Version(3, 0)) { // WebGL 2 supports EXT_color_buffer_half_float. return extensions.colorBufferFloatEXT || (extensions.webglCompatibilityANGLE && extensions.colorBufferHalfFloatEXT); } // HALF_FLOAT_OES else { return SizedHalfFloatOESRGTextureAttachmentSupport(clientVersion, extensions); } } static bool SizedHalfFloatRGRenderbufferSupport(const Version &clientVersion, const Extensions &extensions) { return (clientVersion >= Version(3, 0) || (extensions.textureHalfFloatOES && extensions.textureRgEXT)) && (extensions.colorBufferFloatEXT || extensions.colorBufferHalfFloatEXT); } // RGB16F, RGBA16F with HALF_FLOAT_OES type static bool SizedHalfFloatOESSupport(const Version &clientVersion, const Extensions &extensions) { return extensions.textureStorageEXT && extensions.textureHalfFloatOES; } static bool SizedHalfFloatOESTextureAttachmentSupport(const Version &clientVersion, const Extensions &extensions) { return SizedHalfFloatOESSupport(clientVersion, extensions) && extensions.colorBufferHalfFloatEXT; } // RGB16F, RGBA16F with either HALF_FLOAT_OES or HALF_FLOAT types static bool SizedHalfFloatSupport(const Version &clientVersion, const Extensions &extensions) { // HALF_FLOAT if (clientVersion >= Version(3, 0)) { return true; } // HALF_FLOAT_OES else { return SizedHalfFloatOESSupport(clientVersion, extensions); } } static bool SizedHalfFloatFilterSupport(const Version &clientVersion, const Extensions &extensions) { // HALF_FLOAT if (clientVersion >= Version(3, 0)) { return true; } // HALF_FLOAT_OES else { return extensions.textureHalfFloatLinearOES; } } static bool SizedHalfFloatRGBTextureAttachmentSupport(const Version &clientVersion, const Extensions &extensions) { // HALF_FLOAT if (clientVersion >= Version(3, 0)) { // It is unclear how EXT_color_buffer_half_float applies to ES3.0 and above, however, // dEQP GLES3 es3fFboColorbufferTests.cpp verifies that texture attachment of GL_RGB16F // is possible, so assume that all GLES implementations support it. // The WebGL version of the extension explicitly forbids RGB formats. return extensions.colorBufferHalfFloatEXT && !extensions.webglCompatibilityANGLE; } // HALF_FLOAT_OES else { return SizedHalfFloatOESTextureAttachmentSupport(clientVersion, extensions); } } static bool SizedHalfFloatRGBRenderbufferSupport(const Version &clientVersion, const Extensions &extensions) { return !extensions.webglCompatibilityANGLE && ((clientVersion >= Version(3, 0) || extensions.textureHalfFloatOES) && extensions.colorBufferHalfFloatEXT); } static bool SizedHalfFloatRGBATextureAttachmentSupport(const Version &clientVersion, const Extensions &extensions) { // HALF_FLOAT if (clientVersion >= Version(3, 0)) { // WebGL 2 supports EXT_color_buffer_half_float. return extensions.colorBufferFloatEXT || (extensions.webglCompatibilityANGLE && extensions.colorBufferHalfFloatEXT); } // HALF_FLOAT_OES else { return SizedHalfFloatOESTextureAttachmentSupport(clientVersion, extensions); } } static bool SizedHalfFloatRGBARenderbufferSupport(const Version &clientVersion, const Extensions &extensions) { return (clientVersion >= Version(3, 0) || extensions.textureHalfFloatOES) && (extensions.colorBufferFloatEXT || extensions.colorBufferHalfFloatEXT); } // R32F, RG32F static bool SizedFloatRGSupport(const Version &clientVersion, const Extensions &extensions) { return clientVersion >= Version(3, 0) || (extensions.textureStorageEXT && extensions.textureFloatOES && extensions.textureRgEXT); } // RGB32F static bool SizedFloatRGBSupport(const Version &clientVersion, const Extensions &extensions) { return clientVersion >= Version(3, 0) || (extensions.textureStorageEXT && extensions.textureFloatOES) || extensions.colorBufferFloatRgbCHROMIUM; } // RGBA32F static bool SizedFloatRGBASupport(const Version &clientVersion, const Extensions &extensions) { return clientVersion >= Version(3, 0) || (extensions.textureStorageEXT && extensions.textureFloatOES) || extensions.colorBufferFloatRgbaCHROMIUM; } static bool SizedFloatRGBARenderableSupport(const Version &clientVersion, const Extensions &extensions) { // This logic is the same for both Renderbuffers and TextureAttachment. return extensions.colorBufferFloatRgbaCHROMIUM || // ES2 extensions.colorBufferFloatEXT; // ES3 } static bool Float32BlendableSupport(const Version &clientVersion, const Extensions &extensions) { // EXT_float_blend may be exposed on ES2 client contexts. Ensure that RGBA32F is renderable. return (extensions.colorBufferFloatRgbaCHROMIUM || extensions.colorBufferFloatEXT) && extensions.floatBlendEXT; } template <ExtensionBool bool1> static bool ETC2EACSupport(const Version &clientVersion, const Extensions &extensions) { if (extensions.compressedTextureEtcANGLE) { return true; } // ETC2/EAC formats are always available in ES 3.0+ but require an extension (checked above) // in WebGL. If that extension is not available, hide these formats from WebGL contexts. return !extensions.webglCompatibilityANGLE && (clientVersion >= Version(3, 0) || extensions.*bool1); } InternalFormat::InternalFormat() : internalFormat(GL_NONE), sized(false), sizedInternalFormat(GL_NONE), redBits(0), greenBits(0), blueBits(0), luminanceBits(0), alphaBits(0), sharedBits(0), depthBits(0), stencilBits(0), pixelBytes(0), componentCount(0), compressed(false), compressedBlockWidth(0), compressedBlockHeight(0), compressedBlockDepth(0), paletted(false), paletteBits(0), format(GL_NONE), type(GL_NONE), componentType(GL_NONE), colorEncoding(GL_NONE), textureSupport(NeverSupported), filterSupport(NeverSupported), textureAttachmentSupport(NeverSupported), renderbufferSupport(NeverSupported), blendSupport(NeverSupported) {} InternalFormat::InternalFormat(const InternalFormat &other) = default; InternalFormat &InternalFormat::operator=(const InternalFormat &other) = default; bool InternalFormat::isLUMA() const { return ((redBits + greenBits + blueBits + depthBits + stencilBits) == 0 && (luminanceBits + alphaBits) > 0); } GLenum InternalFormat::getReadPixelsFormat(const Extensions &extensions) const { switch (format) { case GL_BGRA_EXT: // BGRA textures may be enabled but calling glReadPixels with BGRA is disallowed without // GL_EXT_texture_format_BGRA8888. Read as RGBA instead. if (!extensions.readFormatBgraEXT) { return GL_RGBA; } return GL_BGRA_EXT; default: return format; } } GLenum InternalFormat::getReadPixelsType(const Version &version) const { switch (type) { case GL_HALF_FLOAT: case GL_HALF_FLOAT_OES: if (version < Version(3, 0)) { // The internal format may have a type of GL_HALF_FLOAT but when exposing this type // as the IMPLEMENTATION_READ_TYPE, only HALF_FLOAT_OES is allowed by // OES_texture_half_float. HALF_FLOAT becomes core in ES3 and is acceptable to use // as an IMPLEMENTATION_READ_TYPE. return GL_HALF_FLOAT_OES; } return GL_HALF_FLOAT; default: return type; } } bool InternalFormat::supportSubImage() const { return !CompressedFormatRequiresWholeImage(internalFormat); } bool InternalFormat::isRequiredRenderbufferFormat(const Version &version) const { // GLES 3.0.5 section 4.4.2.2: // "Implementations are required to support the same internal formats for renderbuffers as th // required formats for textures enumerated in section 3.8.3.1, with the exception of the colo // formats labelled "texture-only"." if (!sized || compressed) { return false; } // Luma formats. if (isLUMA()) { return false; } // Depth/stencil formats. if (depthBits > 0 || stencilBits > 0) { // GLES 2.0.25 table 4.5. // GLES 3.0.5 section 3.8.3.1. // GLES 3.1 table 8.14. // Required formats in all versions. switch (internalFormat) { case GL_DEPTH_COMPONENT16: case GL_STENCIL_INDEX8: // Note that STENCIL_INDEX8 is not mentioned in GLES 3.0.5 section 3.8.3.1, but it // is in section 4.4.2.2. return true; default: break; } if (version.major < 3) { return false; } // Required formats in GLES 3.0 and up. switch (internalFormat) { case GL_DEPTH_COMPONENT32F: case GL_DEPTH_COMPONENT24: case GL_DEPTH32F_STENCIL8: case GL_DEPTH24_STENCIL8: return true; default: return false; } } // RGBA formats. // GLES 2.0.25 table 4.5. // GLES 3.0.5 section 3.8.3.1. // GLES 3.1 table 8.13. // Required formats in all versions. switch (internalFormat) { case GL_RGBA4: case GL_RGB5_A1: case GL_RGB565: return true; default: break; } if (version.major < 3) { return false; } if (format == GL_BGRA_EXT) { return false; } switch (componentType) { case GL_SIGNED_NORMALIZED: case GL_FLOAT: return false; case GL_UNSIGNED_INT: case GL_INT: // Integer RGB formats are not required renderbuffer formats. if (alphaBits == 0 && blueBits != 0) { return false; } // All integer R and RG formats are required. // Integer RGBA formats including RGB10_A2_UI are required. return true; case GL_UNSIGNED_NORMALIZED: if (internalFormat == GL_SRGB8) { return false; } return true; default: UNREACHABLE(); return false; } } bool InternalFormat::isInt() const { return componentType == GL_INT || componentType == GL_UNSIGNED_INT; } bool InternalFormat::isDepthOrStencil() const { return depthBits != 0 || stencilBits != 0; } Format::Format(GLenum internalFormat) : Format(GetSizedInternalFormatInfo(internalF Format::Format(const InternalFormat &internalFormat) : info(&internalFormat) {} Format::Format(GLenum internalFormat, GLenum type) : info(&GetInternalFormatInfo(internalFormat, type)) {} Format::Format(const Format &other) = default; Format &Format::operator=(const Format &other) = default; bool Format::valid() const { return info->internalFormat != GL_NONE; } // static bool Format::SameSized(const Format &a, const Format &b) { return a.info->sizedInternalFormat == b.info->sizedInternalFormat; } static GLenum EquivalentBlitInternalFormat(GLenum internalformat) { // BlitFramebuffer works if the color channels are identically // sized, even if there is a swizzle (for example, blitting from a // multisampled RGBA8 renderbuffer to a BGRA8 texture). This could // be expanded and/or autogenerated if that is found necessary. if (internalformat == GL_BGRA8_EXT) { return GL_RGBA8; } // GL_ANGLE_rgbx_internal_format: Treat RGBX8 as RGB8, since the X channel is ignored. if (internalformat == GL_RGBX8_ANGLE) { return GL_RGB8; } // Treat ANGLE's BGRX8 as RGB8 since it's swizzled and the X channel is ignored. if (internalformat == GL_BGRX8_ANGLEX) { return GL_RGB8; } return internalformat; } // static bool Format::EquivalentForBlit(const Format &a, const Format &b) { return (EquivalentBlitInternalFormat(a.info->sizedInternalFormat) == EquivalentBlitInternalFormat(b.info->sizedInternalFormat)); } // static Format Format::Invalid() { static Format invalid(GL_NONE, GL_NONE); return invalid; } std::ostream &operator<<(std::ostream &os, const Format &fmt) { // TODO(ynovikov): return string representation when available return FmtHex(os, fmt.info->sizedInternalFormat); } bool InternalFormat::operator==(const InternalFormat &other) const { // We assume all internal formats are unique if they have the same internal format and type return internalFormat == other.internalFormat && type == other.type; } bool InternalFormat::operator!=(const InternalFormat &other) const { return !(*this == other); } void InsertFormatInfo(InternalFormatInfoMap *map, const InternalFormat &formatInfo) { ASSERT(!formatInfo.sized || (*map).count(formatInfo.internalFormat) == 0); ASSERT((*map)[formatInfo.internalFormat].count(formatInfo.type) == 0); (*map)[formatInfo.internalFormat][formatInfo.type] = formatInfo; } // YuvFormatInfo implementation YuvFormatInfo::YuvFormatInfo(GLenum internalFormat, const Extents &yPlaneExtent) { ASSERT(gl::IsYuvFormat(internalFormat)); ASSERT((gl::GetPlaneCount(internalFormat) > 0) && (gl::GetPlaneCount(internalFormat) <= 3) glInternalFormat = internalFormat; planeCount = gl::GetPlaneCount(internalFormat); // Chroma planes of a YUV format can be subsampled int horizontalSubsampleFactor = 0; int verticalSubsampleFactor = 0; gl::GetSubSampleFactor(internalFormat, &horizontalSubsampleFactor, &verticalSubsampleFactor); // Compute plane Bpp planeBpp[0] = gl::GetYPlaneBpp(internalFormat); planeBpp[1] = gl::GetChromaPlaneBpp(internalFormat); planeBpp[2] = (planeCount > 2) ? planeBpp[1] : 0; // Compute plane extent planeExtent[0] = yPlaneExtent; planeExtent[1] = {(yPlaneExtent.width / horizontalSubsampleFactor), (yPlaneExtent.height / verticalSubsampleFactor), yPlaneExtent.depth}; planeExtent[2] = (planeCount > 2) ? planeExtent[1] : Extents(); // Compute plane pitch planePitch[0] = planeExtent[0].width * planeBpp[0]; planePitch[1] = planeExtent[1].width * planeBpp[1]; planePitch[2] = planeExtent[2].width * planeBpp[2]; // Compute plane size planeSize[0] = planePitch[0] * planeExtent[0].height; planeSize[1] = planePitch[1] * planeExtent[1].height; planeSize[2] = planePitch[2] * planeExtent[2].height; // Compute plane offset planeOffset[0] = 0; planeOffset[1] = planeSize[0]; planeOffset[2] = planeSize[0] + planeSize[1]; } // YUV format related helpers bool IsYuvFormat(GLenum format) { switch (format) { case GL_G8_B8R8_2PLANE_420_UNORM_ANGLE: case GL_G8_B8_R8_3PLANE_420_UNORM_ANGLE: case GL_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G16_B16R16_2PLANE_420_UNORM_ANGLE: case GL_G16_B16_R16_3PLANE_420_UNORM_ANGLE: return true; default: return false; } } uint32_t GetPlaneCount(GLenum format) { switch (format) { case GL_G8_B8R8_2PLANE_420_UNORM_ANGLE: case GL_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G16_B16R16_2PLANE_420_UNORM_ANGLE: return 2; case GL_G8_B8_R8_3PLANE_420_UNORM_ANGLE: case GL_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G16_B16_R16_3PLANE_420_UNORM_ANGLE: return 3; default: UNREACHABLE(); return 0; } } uint32_t GetYPlaneBpp(GLenum format) { switch (format) { case GL_G8_B8R8_2PLANE_420_UNORM_ANGLE: case GL_G8_B8_R8_3PLANE_420_UNORM_ANGLE: return 1; case GL_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G16_B16R16_2PLANE_420_UNORM_ANGLE: case GL_G16_B16_R16_3PLANE_420_UNORM_ANGLE: return 2; default: UNREACHABLE(); return 0; } } uint32_t GetChromaPlaneBpp(GLenum format) { // 2 plane 420 YUV formats have CbCr channels interleaved. // 3 plane 420 YUV formats have separate Cb and Cr planes. switch (format) { case GL_G8_B8_R8_3PLANE_420_UNORM_ANGLE: return 1; case GL_G8_B8R8_2PLANE_420_UNORM_ANGLE: case GL_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G16_B16_R16_3PLANE_420_UNORM_ANGLE: return 2; case GL_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G16_B16R16_2PLANE_420_UNORM_ANGLE: return 4; default: UNREACHABLE(); return 0; } } void GetSubSampleFactor(GLenum format, int *horizontalSubsampleFactor, int *verticalSu { ASSERT(horizontalSubsampleFactor && verticalSubsampleFactor); switch (format) { case GL_G8_B8R8_2PLANE_420_UNORM_ANGLE: case GL_G8_B8_R8_3PLANE_420_UNORM_ANGLE: case GL_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16_ANGLE: case GL_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16_ANGLE: case GL_G16_B16R16_2PLANE_420_UNORM_ANGLE: case GL_G16_B16_R16_3PLANE_420_UNORM_ANGLE: *horizontalSubsampleFactor = 2; *verticalSubsampleFactor = 2; break; default: UNREACHABLE(); break; } } struct FormatBits { constexpr GLuint pixelBytes() const { return (red + green + blue + alpha + shared + unused) / 8; } constexpr GLuint componentCount() const { return ((red > 0) ? 1 : 0) + ((green > 0) ? 1 : 0) + ((blue > 0) ? 1 : 0) + ((alpha > 0) ? 1 : 0); } constexpr bool valid() const { return ((red + green + blue + alpha + shared + unused) % 8) == 0; } GLuint red; GLuint green; GLuint blue; GLuint alpha; GLuint unused; GLuint shared; }; template <GLuint red, GLuint green, GLuint blue, GLuint alpha, GLuint unused, GLuint shared> constexpr FormatBits FB() { constexpr FormatBits formatBits = {red, green, blue, alpha, unused, shared}; static_assert(formatBits.valid(), "Invalid FormatBits"); return formatBits; } void AddRGBAXFormat(InternalFormatInfoMap *map, GLenum internalFormat, bool sized, const FormatBits &formatBits, GLenum format, GLenum type, GLenum componentType, bool srgb, InternalFormat::SupportCheckFunction textureSupport, InternalFormat::SupportCheckFunction filterSupport, InternalFormat::SupportCheckFunction textureAttachmentSupport, InternalFormat::SupportCheckFunction renderbufferSupport, InternalFormat::SupportCheckFunction blendSupport) { ASSERT(formatBits.valid()); InternalFormat formatInfo; formatInfo.internalFormat = internalFormat; formatInfo.sized = sized; formatInfo.sizedInternalFormat = sized ? internalFormat : GetSizedFormatInternal(internalFormat, type); formatInfo.redBits = formatBits.red; formatInfo.greenBits = formatBits.green; formatInfo.blueBits = formatBits.blue; formatInfo.alphaBits = formatBits.alpha; formatInfo.sharedBits = formatBits.shared; formatInfo.pixelBytes = formatBits.pixelBytes(); formatInfo.componentCount = formatBits.componentCount(); formatInfo.format = format; formatInfo.type = type; formatInfo.componentType = componentType; formatInfo.colorEncoding = (srgb ? GL_SRGB : GL_LINEAR); formatInfo.textureSupport = textureSupport; formatInfo.filterSupport = filterSupport; formatInfo.textureAttachmentSupport = textureAttachmentSupport; formatInfo.renderbufferSupport = renderbufferSupport; formatInfo.blendSupport = blendSupport; InsertFormatInfo(map, formatInfo); } void AddRGBAFormat(InternalFormatInfoMap *map, GLenum internalFormat, bool sized, GLuint red, GLuint green, GLuint blue, GLuint alpha, GLuint shared, GLenum format, GLenum type, GLenum componentType, bool srgb, InternalFormat::SupportCheckFunction textureSupport, InternalFormat::SupportCheckFunction filterSupport, InternalFormat::SupportCheckFunction textureAttachmentSupport, InternalFormat::SupportCheckFunction renderbufferSupport, InternalFormat::SupportCheckFunction blendSupport) { return AddRGBAXFormat(map, internalFormat, sized, {red, green, blue, alpha, 0, shared}, fo type, componentType, srgb, textureSupport, filterSupport, textureAttachmentSupport, renderbufferSupport, blendSupport); } static void AddLUMAFormat(InternalFormatInfoMap *map, GLenum internalFormat, bool sized, GLuint luminance, GLuint alpha, GLenum format, GLenum type, GLenum componentType, InternalFormat::SupportCheckFunction textureSupport, InternalFormat::SupportCheckFunction filterSupport, InternalFormat::SupportCheckFunction textureAttachmentSupport, InternalFormat::SupportCheckFunction renderbufferSupport, InternalFormat::SupportCheckFunction blendSupport) { InternalFormat formatInfo; formatInfo.internalFormat = internalFormat; formatInfo.sized = sized; formatInfo.sizedInternalFormat = sized ? internalFormat : GetSizedFormatInternal(internalFormat, type); formatInfo.luminanceBits = luminance; formatInfo.alphaBits = alpha; formatInfo.pixelBytes = (luminance + alpha) / 8; formatInfo.componentCount = ((luminance > 0) ? 1 : 0) + ((alpha > 0) ? 1 : 0); formatInfo.format = format; formatInfo.type = type; formatInfo.componentType = componentType; formatInfo.colorEncoding = GL_LINEAR; formatInfo.textureSupport = textureSupport; formatInfo.filterSupport = filterSupport; formatInfo.textureAttachmentSupport = textureAttachmentSupport; formatInfo.renderbufferSupport = renderbufferSupport; formatInfo.blendSupport = blendSupport; InsertFormatInfo(map, formatInfo); } void AddDepthStencilFormat(InternalFormatInfoMap *map, GLenum internalFormat, bool sized, GLuint depthBits, GLuint stencilBits, GLuint unusedBits, GLenum format, GLenum type, GLenum componentType, InternalFormat::SupportCheckFunction textureSupport, InternalFormat::SupportCheckFunction filterSupport, InternalFormat::SupportCheckFunction textureAttachmentSupport, InternalFormat::SupportCheckFunction renderbufferSupport, InternalFormat::SupportCheckFunction blendSupport) { InternalFormat formatInfo; formatInfo.internalFormat = internalFormat; formatInfo.sized = sized; formatInfo.sizedInternalFormat = sized ? internalFormat : GetSizedFormatInternal(internalFormat, type); formatInfo.depthBits = depthBits; formatInfo.stencilBits = stencilBits; formatInfo.pixelBytes = (depthBits + stencilBits + unusedBits) / 8; formatInfo.componentCount = ((depthBits > 0) ? 1 : 0) + ((stencilBits > 0) ? 1 : 0); formatInfo.format = format; formatInfo.type = type; formatInfo.componentType = componentType; formatInfo.colorEncoding = GL_LINEAR; formatInfo.textureSupport = textureSupport; formatInfo.filterSupport = filterSupport; formatInfo.textureAttachmentSupport = textureAttachmentSupport; formatInfo.renderbufferSupport = renderbufferSupport; formatInfo.blendSupport = blendSupport; InsertFormatInfo(map, formatInfo); } void AddCompressedFormat(InternalFormatInfoMap *map, GLenum internalFormat, GLuint compressedBlockWidth, GLuint compressedBlockHeight, GLuint compressedBlockDepth, GLuint compressedBlockSize, GLuint componentCount, bool srgb, InternalFormat::SupportCheckFunction textureSupport, InternalFormat::SupportCheckFunction filterSupport, InternalFormat::SupportCheckFunction textureAttachmentSupport, InternalFormat::SupportCheckFunction renderbufferSupport, InternalFormat::SupportCheckFunction blendSupport) { InternalFormat formatInfo; formatInfo.internalFormat = internalFormat; formatInfo.sized = true; formatInfo.sizedInternalFormat = internalFormat; formatInfo.compressedBlockWidth = compressedBlockWidth; formatInfo.compressedBlockHeight = compressedBlockHeight; formatInfo.compressedBlockDepth = compressedBlockDepth; formatInfo.pixelBytes = compressedBlockSize / 8; formatInfo.componentCount = componentCount; formatInfo.format = internalFormat; formatInfo.type = GL_UNSIGNED_BYTE; formatInfo.componentType = GL_UNSIGNED_NORMALIZED; formatInfo.colorEncoding = (srgb ? GL_SRGB : GL_LINEAR); formatInfo.compressed = true; formatInfo.textureSupport = textureSupport; formatInfo.filterSupport = filterSupport; formatInfo.textureAttachmentSupport = textureAttachmentSupport; formatInfo.renderbufferSupport = renderbufferSupport; formatInfo.blendSupport = blendSupport; InsertFormatInfo(map, formatInfo); } void AddPalettedFormat(InternalFormatInfoMap *map, GLenum internalFormat, GLuint paletteBits, GLuint pixelBytes, GLenum format, GLuint componentCount, InternalFormat::SupportCheckFunction textureSupport, InternalFormat::SupportCheckFunction filterSupport, InternalFormat::SupportCheckFunction textureAttachmentSupport, InternalFormat::SupportCheckFunction renderbufferSupport, InternalFormat::SupportCheckFunction blendSupport) { InternalFormat formatInfo; formatInfo.internalFormat = internalFormat; formatInfo.sized = true; formatInfo.sizedInternalFormat = internalFormat; formatInfo.paletteBits = paletteBits; formatInfo.pixelBytes = pixelBytes; formatInfo.componentCount = componentCount; formatInfo.format = format; formatInfo.type = GL_UNSIGNED_BYTE; formatInfo.componentType = GL_UNSIGNED_NORMALIZED; formatInfo.colorEncoding = GL_LINEAR; formatInfo.paletted = true; formatInfo.textureSupport = textureSupport; formatInfo.filterSupport = filterSupport; formatInfo.textureAttachmentSupport = textureAttachmentSupport; formatInfo.renderbufferSupport = renderbufferSupport; formatInfo.blendSupport = blendSupport; InsertFormatInfo(map, formatInfo); } void AddYUVFormat(InternalFormatInfoMap *map, GLenum internalFormat, bool sized, GLuint cr, GLuint y, GLuint cb, GLuint alpha, GLuint shared, GLenum format, GLenum type, GLenum componentType, bool srgb, InternalFormat::SupportCheckFunction textureSupport, InternalFormat::SupportCheckFunction filterSupport, InternalFormat::SupportCheckFunction textureAttachmentSupport, InternalFormat::SupportCheckFunction renderbufferSupport, InternalFormat::SupportCheckFunction blendSupport) { ASSERT(sized); InternalFormat formatInfo; formatInfo.internalFormat = internalFormat; formatInfo.sized = sized; formatInfo.sizedInternalFormat = internalFormat; formatInfo.redBits = cr; formatInfo.greenBits = y; formatInfo.blueBits = cb; formatInfo.alphaBits = alpha; formatInfo.sharedBits = shared; formatInfo.pixelBytes = (cr + y + cb + alpha + shared) / 8; formatInfo.componentCount = ((cr > 0) ? 1 : 0) + ((y > 0) ? 1 : 0) + ((cb > 0) ? 1 : 0) + ((alpha > 0) ? 1 : 0); formatInfo.format = format; formatInfo.type = type; formatInfo.componentType = componentType; formatInfo.colorEncoding = (srgb ? GL_SRGB : GL_LINEAR); formatInfo.textureSupport = textureSupport; formatInfo.filterSupport = filterSupport; formatInfo.textureAttachmentSupport = textureAttachmentSupport; formatInfo.renderbufferSupport = renderbufferSupport; formatInfo.blendSupport = blendSupport; InsertFormatInfo(map, formatInfo); } // Notes: // 1. "Texture supported" includes all the means by which texture can be created, however, // GL_EXT_texture_storage in ES2 is a special case, when only glTexStorage* is allowed. // The assumption is that ES2 validation will not check textureSupport for sized formats. // // 2. Sized half float types are a combination of GL_HALF_FLOAT and GL_HALF_FLOAT_OES support // due to a limitation that only one type for sized formats is allowed. // // TODO(ynovikov): http://anglebug.com/2846 Verify support fields of BGRA, depth, stencil // and compressed formats. Perform texturable check as part of filterable and attachment chec static InternalFormatInfoMap BuildInternalFormatInfoMap() { InternalFormatInfoMap map; // From ES 3.0.1 spec, table 3.12 map[GL_NONE][GL_NONE] = InternalFormat(); // clang-format off // | Internal format |sized| R | G | B | A |S | Format | Type | Component type | SRGB | Texture supporte AddRGBAFormat(&map, GL_R8, true, 8, 0, 0, 0, 0, GL_RED, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORM AddRGBAFormat(&map, GL_R8_SNORM, true, 8, 0, 0, 0, 0, GL_RED, GL_BYTE, GL_SIGNED_NORMALIZE AddRGBAFormat(&map, GL_RG8, true, 8, 8, 0, 0, 0, GL_RG, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORM AddRGBAFormat(&map, GL_RG8_SNORM, true, 8, 8, 0, 0, 0, GL_RG, GL_BYTE, GL_SIGNED_NORMALIZE AddRGBAFormat(&map, GL_RGB8, true, 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, GL_UNSIGNED_NO AddRGBAFormat(&map, GL_RGB8_SNORM, true, 8, 8, 8, 0, 0, GL_RGB, GL_BYTE, GL_SIGNED_NORMALI AddRGBAFormat(&map, GL_RGB565, true, 5, 6, 5, 0, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_UN AddRGBAFormat(&map, GL_RGBA4, true, 4, 4, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, GL_ AddRGBAFormat(&map, GL_RGB5_A1, true, 5, 5, 5, 1, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, G AddRGBAFormat(&map, GL_RGBA8, true, 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, GL_UNSIGNED_ AddRGBAFormat(&map, GL_RGBA8_SNORM, true, 8, 8, 8, 8, 0, GL_RGBA, GL_BYTE, GL_SIGNED_NORMA AddRGBAFormat(&map, GL_RGB10_A2UI, true, 10, 10, 10, 2, 0, GL_RGBA_INTEGER, GL_UNSIGNED_I AddRGBAFormat(&map, GL_SRGB8, true, 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, GL_UNSIGNED_N AddRGBAFormat(&map, GL_SRGB8_ALPHA8, true, 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, GL_UN AddRGBAFormat(&map, GL_R11F_G11F_B10F, true, 11, 11, 10, 0, 0, GL_RGB, GL_UNSIGNED_INT_10 AddRGBAFormat(&map, GL_RGB9_E5, true, 9, 9, 9, 0, 5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, AddRGBAFormat(&map, GL_R8I, true, 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_BYTE, GL_INT, false, Req AddRGBAFormat(&map, GL_R8UI, true, 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_BYTE, GL_UNS AddRGBAFormat(&map, GL_R16I, true, 16, 0, 0, 0, 0, GL_RED_INTEGER, GL_SHORT, GL_INT, false, AddRGBAFormat(&map, GL_R16UI, true, 16, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_SHORT, GL_ AddRGBAFormat(&map, GL_R32I, true, 32, 0, 0, 0, 0, GL_RED_INTEGER, GL_INT, GL_INT, false, Re AddRGBAFormat(&map, GL_R32UI, true, 32, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_INT, GL_UN AddRGBAFormat(&map, GL_RG8I, true, 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_BYTE, GL_INT, false, Req AddRGBAFormat(&map, GL_RG8UI, true, 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_BYTE, GL_UNS AddRGBAFormat(&map, GL_RG16I, true, 16, 16, 0, 0, 0, GL_RG_INTEGER, GL_SHORT, GL_INT, false AddRGBAFormat(&map, GL_RG16UI, true, 16, 16, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_SHORT, GL AddRGBAFormat(&map, GL_RG32I, true, 32, 32, 0, 0, 0, GL_RG_INTEGER, GL_INT, GL_INT, false, R AddRGBAFormat(&map, GL_RG32UI, true, 32, 32, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_INT, GL_U AddRGBAFormat(&map, GL_RGB8I, true, 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_BYTE, GL_INT, false, R AddRGBAFormat(&map, GL_RGB8UI, true, 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_BYTE, GL_U AddRGBAFormat(&map, GL_RGB16I, true, 16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_SHORT, GL_INT, fa AddRGBAFormat(&map, GL_RGB16UI, true, 16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_SHORT AddRGBAFormat(&map, GL_RGB32I, true, 32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_INT, GL_INT, fals AddRGBAFormat(&map, GL_RGB32UI, true, 32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_INT, G AddRGBAFormat(&map, GL_RGBA8I, true, 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_BYTE, GL_INT, false AddRGBAFormat(&map, GL_RGBA8UI, true, 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, GL AddRGBAFormat(&map, GL_RGBA16I, true, 16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_SHORT, GL_INT AddRGBAFormat(&map, GL_RGBA16UI, true, 16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_UNSIGNED_SH AddRGBAFormat(&map, GL_RGBA32I, true, 32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_INT, GL_INT, f AddRGBAFormat(&map, GL_RGBA32UI, true, 32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_UNSIGNED_IN AddRGBAFormat(&map, GL_BGRA8_EXT, true, 8, 8, 8, 8, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, GL_U AddRGBAFormat(&map, GL_BGRA4_ANGLEX, true, 4, 4, 4, 4, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_ AddRGBAFormat(&map, GL_BGR5_A1_ANGLEX, true, 5, 5, 5, 1, 0, GL_BGRA_EXT, GL_UNSIGNED_SHOR // Special format that is used for D3D textures that are used within ANGLE via the // EGL_ANGLE_d3d_texture_client_buffer extension. We don't allow uploading texture image // this format, but textures in this format can be created from D3D textures, and filtering them // and rendering to them is allowed. AddRGBAFormat(&map, GL_BGRA8_SRGB_ANGLEX, true, 8, 8, 8, 8, 0, GL_BGRA_EXT, GL_UNSIGNED_B // Special format which is not really supported, so always false for all supports. AddRGBAFormat(&map, GL_BGR565_ANGLEX, true, 5, 6, 5, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT AddRGBAFormat(&map, GL_BGR10_A2_ANGLEX, true, 10, 10, 10, 2, 0, GL_BGRA_EXT, GL_UNSIGNED_ // Special format to emulate RGB8 with RGBA8 within ANGLE. AddRGBAFormat(&map, GL_RGBX8_ANGLE, true, 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, GL_UNSI // Special format to emulate BGR8 with BGRA8 within ANGLE. AddRGBAFormat(&map, GL_BGRX8_ANGLEX, true, 8, 8, 8, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, G // This format is supported on ES 2.0 with two extensions, so keep it out-of-line to not widen the // | Internal format |sized| R | G | B | A |S | Format | Type | Component type | SRGB | Texture supporte AddRGBAFormat(&map, GL_RGB10_A2, true, 10, 10, 10, 2, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10 // Floating point formats // | Internal format |sized| R | G | B | A |S | Format | Type | Component type | SRGB | Texture supporte // It's not possible to have two entries per sized format. // E.g. for GL_RG16F, one with GL_HALF_FLOAT type and the other with GL_HALF_FLOAT_OES type. // So, GL_HALF_FLOAT type formats conditions are merged with GL_HALF_FLOAT_OES type conditi AddRGBAFormat(&map, GL_R16F, true, 16, 0, 0, 0, 0, GL_RED, GL_HALF_FLOAT, GL_FLOAT, false, S AddRGBAFormat(&map, GL_RG16F, true, 16, 16, 0, 0, 0, GL_RG, GL_HALF_FLOAT, GL_FLOAT, false, AddRGBAFormat(&map, GL_RGB16F, true, 16, 16, 16, 0, 0, GL_RGB, GL_HALF_FLOAT, GL_FLOAT, fal AddRGBAFormat(&map, GL_RGBA16F, true, 16, 16, 16, 16, 0, GL_RGBA, GL_HALF_FLOAT, GL_FLOAT, AddRGBAFormat(&map, GL_R32F, true, 32, 0, 0, 0, 0, GL_RED, GL_FLOAT, GL_FLOAT, false, SizedF AddRGBAFormat(&map, GL_RG32F, true, 32, 32, 0, 0, 0, GL_RG, GL_FLOAT, GL_FLOAT, false, Sized AddRGBAFormat(&map, GL_RGB32F, true, 32, 32, 32, 0, 0, GL_RGB, GL_FLOAT, GL_FLOAT, false, Si AddRGBAFormat(&map, GL_RGBA32F, true, 32, 32, 32, 32, 0, GL_RGBA, GL_FLOAT, GL_FLOAT, false // ANGLE Depth stencil formats // | Internal format |sized| D |S | X | Format | Type | Component type | Texture supported | Filtera AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT16, true, 16, 0, 0, GL_DEPTH_COMPONENT, G AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT24, true, 24, 0, 8, GL_DEPTH_COMPONENT, G AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT32F, true, 32, 0, 0, GL_DEPTH_COMPONENT, AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT32_OES, true, 32, 0, 0, GL_DEPTH_COMPONE AddDepthStencilFormat(&map, GL_DEPTH24_STENCIL8, true, 24, 8, 0, GL_DEPTH_STENCIL, GL_U AddDepthStencilFormat(&map, GL_DEPTH32F_STENCIL8, true, 32, 8, 24, GL_DEPTH_STENCIL, GL // STENCIL_INDEX8 is special-cased, see around the bottom of the list. // Luminance alpha formats // | Internal format |sized| L | A | Format | Type | Component type | Texture supported | Filterabl AddLUMAFormat(&map, GL_ALPHA8_EXT, true, 0, 8, GL_ALPHA, GL_UNSIGNED_BYTE, GL_UNSIGNED_ AddLUMAFormat(&map, GL_LUMINANCE8_EXT, true, 8, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, GL_U AddLUMAFormat(&map, GL_LUMINANCE8_ALPHA8_EXT, true, 8, 8, GL_LUMINANCE_ALPHA, GL_UNSIG AddLUMAFormat(&map, GL_ALPHA16F_EXT, true, 0, 16, GL_ALPHA, GL_HALF_FLOAT_OES, GL_FLOAT AddLUMAFormat(&map, GL_LUMINANCE16F_EXT, true, 16, 0, GL_LUMINANCE, GL_HALF_FLOAT_OES, AddLUMAFormat(&map, GL_LUMINANCE_ALPHA16F_EXT, true, 16, 16, GL_LUMINANCE_ALPHA, GL_HA AddLUMAFormat(&map, GL_ALPHA32F_EXT, true, 0, 32, GL_ALPHA, GL_FLOAT, GL_FLOAT, RequireE AddLUMAFormat(&map, GL_LUMINANCE32F_EXT, true, 32, 0, GL_LUMINANCE, GL_FLOAT, GL_FLOAT, AddLUMAFormat(&map, GL_LUMINANCE_ALPHA32F_EXT, true, 32, 32, GL_LUMINANCE_ALPHA, GL_FL // Compressed formats, From ES 3.0.1 spec, table 3.16 // | Internal format |W |H |D | BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_R11_EAC, 4, 4, 1, 64, 1, false, ETC2EACSupport<&Extensions::compressedEACR11UnsignedTextureOES> AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_R11_EAC, 4, 4, 1, 64, 1, false, ETC2EACSu AddCompressedFormat(&map, GL_COMPRESSED_RG11_EAC, 4, 4, 1, 128, 2, false, ETC2EACSupport<&Extensions::compressedEACRG11UnsignedTextureOES& AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_RG11_EAC, 4, 4, 1, 128, 2, false, ETC2EAC AddCompressedFormat(&map, GL_COMPRESSED_RGB8_ETC2, 4, 4, 1, 64, 3, false, ETC2EACSupport<&Extensions::compressedETC2RGB8TextureOES& AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ETC2, 4, 4, 1, 64, 3, true, ETC2EACSupport<&Extensions::compressedETC2SRGB8TextureOES& AddCompressedFormat(&map, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 4, 4, 1, 64, 4, AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 4, 4, 1, 64, 4 AddCompressedFormat(&map, GL_COMPRESSED_RGBA8_ETC2_EAC, 4, 4, 1, 128, 4, false, ETC2EACS AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 4, 4, 1, 128, 4, true, ET // From GL_EXT_texture_compression_dxt1 // | Internal format |W |H |D | BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 1, 64, 3, false, Requir AddCompressedFormat(&map, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 4, 4, 1, 64, 4, false, Requi // From GL_ANGLE_texture_compression_dxt3 AddCompressedFormat(&map, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, 4, 4, 1, 128, 4, false, Re // From GL_ANGLE_texture_compression_dxt5 AddCompressedFormat(&map, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, 4, 4, 1, 128, 4, false, Re // From GL_OES_compressed_ETC1_RGB8_texture AddCompressedFormat(&map, GL_ETC1_RGB8_OES, 4, 4, 1, 64, 3, false, RequireExt<&Extensions::compressedETC1RGB8TextureOES>, AlwaysS // From GL_EXT_texture_compression_s3tc_srgb // | Internal format |W |H |D | BS |CC|SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 4, 4, 1, 64, 3, true, Requir AddCompressedFormat(&map, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 4, 4, 1, 64, 4, true, AddCompressedFormat(&map, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 4, 4, 1, 128, 4, true AddCompressedFormat(&map, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 4, 4, 1, 128, 4, true // From GL_KHR_texture_compression_astc_ldr and KHR_texture_compression_astc_hdr and G // | Internal format | W | H |D | BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_4x4_KHR, 4, 4, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_5x4_KHR, 5, 4, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_5x5_KHR, 5, 5, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_6x5_KHR, 6, 5, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_6x6_KHR, 6, 6, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_8x5_KHR, 8, 5, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_8x6_KHR, 8, 6, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_8x8_KHR, 8, 8, 1, 128, 4, false, Requi AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_10x5_KHR, 10, 5, 1, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_10x6_KHR, 10, 6, 1, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_10x8_KHR, 10, 8, 1, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_10x10_KHR, 10, 10, 1, 128, 4, false, R AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_12x10_KHR, 12, 10, 1, 128, 4, false, R AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_12x12_KHR, 12, 12, 1, 128, 4, false, R AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, 4, 4, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, 5, 4, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, 5, 5, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, 6, 5, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, 6, 6, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, 8, 5, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, 8, 6, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, 8, 8, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, 10, 5, 1, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, 10, 6, 1, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, 10, 8, 1, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, 10, 10, 1, 128, 4 AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, 12, 10, 1, 128, 4 AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, 12, 12, 1, 128, 4 AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_3x3x3_OES, 3, 3, 3, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_4x3x3_OES, 4, 3, 3, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_4x4x3_OES, 4, 4, 3, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_4x4x4_OES, 4, 4, 4, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_5x4x4_OES, 5, 4, 4, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_5x5x4_OES, 5, 5, 4, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_5x5x5_OES, 5, 5, 5, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_6x5x5_OES, 6, 5, 5, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_6x6x5_OES, 6, 6, 5, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_ASTC_6x6x6_OES, 6, 6, 6, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES, 3, 3, 3, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES, 4, 3, 3, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES, 4, 4, 3, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES, 4, 4, 4, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES, 5, 4, 4, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES, 5, 5, 4, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES, 5, 5, 5, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES, 6, 5, 5, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES, 6, 6, 5, 128, 4, t AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES, 6, 6, 6, 128, 4, t // From EXT_texture_compression_rgtc // | Internal format | W | H |D | BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_RED_RGTC1_EXT, 4, 4, 1, 64, 1, false, RequireExt<&Extensions::textureCompressionRgtcEXT& AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_RED_RGTC1_EXT, 4, 4, 1, 64, 1, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RED_GREEN_RGTC2_EXT, 4, 4, 1, 128, 2, false, Req AddCompressedFormat(&map, GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT, 4, 4, 1, 128, 2, fa // From EXT_texture_compression_bptc // | Internal format | W | H |D | BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_RGBA_BPTC_UNORM_EXT, 4, 4, 1, 128, 4, false, Req AddCompressedFormat(&map, GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT, 4, 4, 1, 128, 4, tru AddCompressedFormat(&map, GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT, 4, 4, 1, 128, 4, fal AddCompressedFormat(&map, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT, 4, 4, 1, 128, 4, f // Paletted formats // | Internal format | | PS | Format | CC | Texture supported | Filterable | Texture attachment | Re AddPalettedFormat(&map, GL_PALETTE4_RGB8_OES, 4, 3, GL_RGB, 3, RequireES1, AlwaysSuppor AddPalettedFormat(&map, GL_PALETTE4_RGBA8_OES, 4, 4, GL_RGBA, 4, RequireES1, AlwaysSupp AddPalettedFormat(&map, GL_PALETTE4_R5_G6_B5_OES, 4, 2, GL_RGB, 3, RequireES1, AlwaysSu AddPalettedFormat(&map, GL_PALETTE4_RGBA4_OES, 4, 2, GL_RGBA, 4, RequireES1, AlwaysSupp AddPalettedFormat(&map, GL_PALETTE4_RGB5_A1_OES, 4, 2, GL_RGBA, 4, RequireES1, AlwaysSu AddPalettedFormat(&map, GL_PALETTE8_RGB8_OES, 8, 3, GL_RGB, 3, RequireES1, AlwaysSuppor AddPalettedFormat(&map, GL_PALETTE8_RGBA8_OES, 8, 4, GL_RGBA, 4, RequireES1, AlwaysSupp AddPalettedFormat(&map, GL_PALETTE8_R5_G6_B5_OES, 8, 2, GL_RGB, 3, RequireES1, AlwaysSu AddPalettedFormat(&map, GL_PALETTE8_RGBA4_OES, 8, 2, GL_RGBA, 4, RequireES1, AlwaysSupp AddPalettedFormat(&map, GL_PALETTE8_RGB5_A1_OES, 8, 2, GL_RGBA, 4, RequireES1, AlwaysSu // From GL_IMG_texture_compression_pvrtc // | Internal format | W | H | D | BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG, 4, 4, 1, 64, 3, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG, 8, 4, 1, 64, 3, false, Req AddCompressedFormat(&map, GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG, 4, 4, 1, 64, 4, false, Re AddCompressedFormat(&map, GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG, 8, 4, 1, 64, 4, false, Re // From GL_EXT_pvrtc_sRGB // | Internal format | W | H | D | BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT, 8, 4, 1, 64, 3, true, Req AddCompressedFormat(&map, GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT, 4, 4, 1, 64, 3, true, Req AddCompressedFormat(&map, GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT, 8, 4, 1, 64, 4, tr AddCompressedFormat(&map, GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT, 4, 4, 1, 64, 4, tr // For STENCIL_INDEX8 we chose a normalized component type for the following reasons: // - Multisampled buffer are disallowed for non-normalized integer component types and we wan // - All other stencil formats (all depth-stencil) are either float or normalized // - It affects only validation of internalformat in RenderbufferStorageMultisample. // | Internal format |sized|D |S |X | Format | Type | Component type | Texture supported | Filtera AddDepthStencilFormat(&map, GL_STENCIL_INDEX8, true, 0, 8, 0, GL_STENCIL_INDEX, GL_UNSI // From GL_ANGLE_lossy_etc_decode // | Internal format |W |H |D |BS |CC| SRGB | Texture supported | Filterable | Texture attachment AddCompressedFormat(&map, GL_ETC1_RGB8_LOSSY_DECODE_ANGLE, 4, 4, 1, 64, 3, false, Requir AddCompressedFormat(&map, GL_COMPRESSED_RGB8_LOSSY_DECODE_ETC2_ANGLE, 4, 4, 1, 64, 3, f AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_LOSSY_DECODE_ETC2_ANGLE, 4, 4, 1, 64, 3, AddCompressedFormat(&map, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_LOSSY_DECODE_ETC AddCompressedFormat(&map, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_LOSSY_DECODE_ET // From GL_EXT_texture_norm16 // | Internal format |sized| R | G | B | A |S | Format | Type | Component type | SRGB | Texture supporte AddRGBAFormat(&map, GL_R16_EXT, true, 16, 0, 0, 0, 0, GL_RED, GL_UNSIGNED_SHORT, GL_UNSIGN AddRGBAFormat(&map, GL_R16_SNORM_EXT, true, 16, 0, 0, 0, 0, GL_RED, GL_SHORT, GL_SIGNED_NO AddRGBAFormat(&map, GL_RG16_EXT, true, 16, 16, 0, 0, 0, GL_RG, GL_UNSIGNED_SHORT, GL_UNSIG AddRGBAFormat(&map, GL_RG16_SNORM_EXT, true, 16, 16, 0, 0, 0, GL_RG, GL_SHORT, GL_SIGNED_N AddRGBAFormat(&map, GL_RGB16_EXT, true, 16, 16, 16, 0, 0, GL_RGB, GL_UNSIGNED_SHORT, GL_UN AddRGBAFormat(&map, GL_RGB16_SNORM_EXT, true, 16, 16, 16, 0, 0, GL_RGB, GL_SHORT, GL_SIGNE AddRGBAFormat(&map, GL_RGBA16_EXT, true, 16, 16, 16, 16, 0, GL_RGBA, GL_UNSIGNED_SHORT, GL AddRGBAFormat(&map, GL_RGBA16_SNORM_EXT, true, 16, 16, 16, 16, 0, GL_RGBA, GL_SHORT, GL_SI // From EXT_texture_sRGB_R8 // | Internal format |sized| R | G | B | A |S | Format | Type | Component type | SRGB | Texture supporte AddRGBAFormat(&map, GL_SR8_EXT, true, 8, 0, 0, 0, 0, GL_RED, GL_UNSIGNED_BYTE, GL_UNSIGNED // From EXT_texture_sRGB_RG8 // | Internal format |sized| R | G | B | A |S | Format | Type | Component type | SRGB | Texture supporte AddRGBAFormat(&map, GL_SRG8_EXT, true, 8, 8, 0, 0, 0, GL_RG, GL_UNSIGNED_BYTE, GL_UNSIGNED // From GL_EXT_texture_type_2_10_10_10_REV // GL_RGB10_UNORM_ANGLEX is never used directly but needs to be in the list of all sized interna // | Internal format |sized| R | G | B | A |S |X | Format | Type | Component type | SRGB | Texture suppor AddRGBAXFormat(&map, GL_RGB10_UNORM_ANGLEX, true, FB<10, 10, 10, 0, 0, 2>(), GL_RGB, GL_UNSI // Unsized formats // | Internal format |sized | R | G | B | A |S |X | Format | Type | Component type | SRGB | Texture suppor AddRGBAXFormat(&map, GL_RED, false, FB< 8, 0, 0, 0, 0, 0>(), GL_RED, GL_UNSIGNED_BYTE, GL_UNSI AddRGBAXFormat(&map, GL_RED, false, FB< 8, 0, 0, 0, 0, 0>(), GL_RED, GL_BYTE, GL_SIGNED_NORMAL AddRGBAXFormat(&map, GL_RED, false, FB<16, 0, 0, 0, 0, 0>(), GL_RED, GL_UNSIGNED_SHORT, GL_UN |