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Diffstat (limited to 'gfx/angle/src/libANGLE/formatutils.cpp')
| -rwxr-xr-x | gfx/angle/src/libANGLE/formatutils.cpp | 1656 |
1 files changed, 1656 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/formatutils.cpp b/gfx/angle/src/libANGLE/formatutils.cpp new file mode 100755 index 000000000..2aa2e75d4 --- /dev/null +++ b/gfx/angle/src/libANGLE/formatutils.cpp @@ -0,0 +1,1656 @@ +// +// Copyright (c) 2013-2014 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. +// + +// formatutils.cpp: Queries for GL image formats. + +#include "common/mathutil.h" +#include "libANGLE/formatutils.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 the implementation +// can decide the true, sized, internal format. The ES2FormatMap determines the internal format for all valid +// format and type combinations. +GLenum GetSizedFormatInternal(GLenum format, GLenum type); + +namespace +{ +typedef std::pair<GLenum, InternalFormat> InternalFormatInfoPair; +typedef std::map<GLenum, InternalFormat> InternalFormatInfoMap; + +} // 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; +} + +Type::Type() + : bytes(0), + bytesShift(0), + specialInterpretation(false) +{ +} + +static Type GenTypeInfo(GLuint bytes, bool specialInterpretation) +{ + Type info; + info.bytes = bytes; + GLuint i = 0; + while ((1u << i) < bytes) + { + ++i; + } + info.bytesShift = i; + ASSERT((1u << info.bytesShift) == bytes); + info.specialInterpretation = specialInterpretation; + return info; +} + +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; +} + +template <GLuint minCoreGLMajorVersion, GLuint minCoreGLMinorVersion> +static bool RequireES(const Version &clientVersion, const Extensions &) +{ + return clientVersion >= Version(minCoreGLMajorVersion, minCoreGLMinorVersion); +} + +// Pointer to a boolean memeber of the Extensions struct +typedef bool(Extensions::*ExtensionBool); + +// 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 bool1> +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; +} + +// Special function for half float formats with three or four channels. +static bool HalfFloatSupport(const Version &clientVersion, const Extensions &extensions) +{ + return clientVersion >= Version(3, 0) || extensions.textureHalfFloat; +} + +static bool HalfFloatRenderableSupport(const Version &clientVersion, const Extensions &extensions) +{ + return HalfFloatSupport(clientVersion, extensions) && extensions.colorBufferHalfFloat; +} + +// Special function for half float formats with one or two channels. +static bool HalfFloatSupportRG(const Version &clientVersion, const Extensions &extensions) +{ + return clientVersion >= Version(3, 0) || (extensions.textureHalfFloat && extensions.textureRG); +} + +static bool HalfFloatRenderableSupportRG(const Version &clientVersion, const Extensions &extensions) +{ + return HalfFloatSupportRG(clientVersion, extensions) && extensions.colorBufferHalfFloat; +} + +// Special function for float formats with three or four channels. +static bool FloatSupport(const Version &clientVersion, const Extensions &extensions) +{ + return clientVersion >= Version(3, 0) || extensions.textureFloat; +} + +static bool FloatRenderableSupport(const Version &clientVersion, const Extensions &extensions) +{ + // We don't expose colorBufferFloat in ES2, but we silently support rendering to float. + return FloatSupport(clientVersion, extensions) && + (extensions.colorBufferFloat || clientVersion == Version(2, 0)); +} + +// Special function for float formats with one or two channels. +static bool FloatSupportRG(const Version &clientVersion, const Extensions &extensions) +{ + return clientVersion >= Version(3, 0) || (extensions.textureFloat && extensions.textureRG); +} + +static bool FloatRenderableSupportRG(const Version &clientVersion, const Extensions &extensions) +{ + // We don't expose colorBufferFloat in ES2, but we silently support rendering to float. + return FloatSupportRG(clientVersion, extensions) && + (extensions.colorBufferFloat || clientVersion == Version(2, 0)); +} + +InternalFormat::InternalFormat() + : internalFormat(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), + format(GL_NONE), + type(GL_NONE), + componentType(GL_NONE), + colorEncoding(GL_NONE), + textureSupport(NeverSupported), + renderSupport(NeverSupported), + filterSupport(NeverSupported) +{ +} + +bool InternalFormat::isLUMA() const +{ + return ((redBits + greenBits + blueBits + depthBits + stencilBits) == 0 && + (luminanceBits + alphaBits) > 0); +} + +GLenum InternalFormat::getReadPixelsFormat() const +{ + return format; +} + +GLenum InternalFormat::getReadPixelsType() const +{ + switch (type) + { + case GL_HALF_FLOAT: + // 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 + return GL_HALF_FLOAT_OES; + + default: + return type; + } +} + +Format::Format(GLenum internalFormat) : Format(GetInternalFormatInfo(internalFormat)) +{ +} + +Format::Format(const InternalFormat &internalFormat) + : info(&internalFormat), format(info->format), type(info->type), sized(true) +{ + ASSERT((info->pixelBytes > 0 && format != GL_NONE && type != GL_NONE) || + internalFormat.format == GL_NONE); +} + +Format::Format(GLenum internalFormat, GLenum format, GLenum type) + : info(nullptr), format(format), type(type), sized(false) +{ + const auto &plainInfo = GetInternalFormatInfo(internalFormat); + sized = plainInfo.pixelBytes > 0; + info = (sized ? &plainInfo : &GetInternalFormatInfo(GetSizedFormatInternal(format, type))); + ASSERT(format == GL_NONE || info->pixelBytes > 0); +} + +Format::Format(const Format &other) = default; +Format &Format::operator=(const Format &other) = default; + +GLenum Format::asSized() const +{ + return sized ? info->internalFormat : GetSizedFormatInternal(format, type); +} + +bool Format::valid() const +{ + return info->format != GL_NONE; +} + +// static +bool Format::SameSized(const Format &a, const Format &b) +{ + return (a.info == b.info); +} + +// static +Format Format::Invalid() +{ + static Format invalid(GL_NONE, GL_NONE, GL_NONE); + return invalid; +} + +bool InternalFormat::operator==(const InternalFormat &other) const +{ + // We assume there are no duplicates. + ASSERT((this == &other) == (internalFormat == other.internalFormat)); + return internalFormat == other.internalFormat; +} + +bool InternalFormat::operator!=(const InternalFormat &other) const +{ + // We assume there are no duplicates. + ASSERT((this != &other) == (internalFormat != other.internalFormat)); + return internalFormat != other.internalFormat; +} + +static void AddUnsizedFormat(InternalFormatInfoMap *map, + GLenum internalFormat, + GLenum format, + InternalFormat::SupportCheckFunction textureSupport, + InternalFormat::SupportCheckFunction renderSupport, + InternalFormat::SupportCheckFunction filterSupport) +{ + InternalFormat formatInfo; + formatInfo.internalFormat = internalFormat; + formatInfo.format = format; + formatInfo.textureSupport = textureSupport; + formatInfo.renderSupport = renderSupport; + formatInfo.filterSupport = filterSupport; + ASSERT(map->count(internalFormat) == 0); + (*map)[internalFormat] = formatInfo; +} + +void AddRGBAFormat(InternalFormatInfoMap *map, + GLenum internalFormat, + GLuint red, + GLuint green, + GLuint blue, + GLuint alpha, + GLuint shared, + GLenum format, + GLenum type, + GLenum componentType, + bool srgb, + InternalFormat::SupportCheckFunction textureSupport, + InternalFormat::SupportCheckFunction renderSupport, + InternalFormat::SupportCheckFunction filterSupport) +{ + InternalFormat formatInfo; + formatInfo.internalFormat = internalFormat; + formatInfo.redBits = red; + formatInfo.greenBits = green; + formatInfo.blueBits = blue; + formatInfo.alphaBits = alpha; + formatInfo.sharedBits = shared; + formatInfo.pixelBytes = (red + green + blue + alpha + shared) / 8; + formatInfo.componentCount = ((red > 0) ? 1 : 0) + ((green > 0) ? 1 : 0) + ((blue > 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.renderSupport = renderSupport; + formatInfo.filterSupport = filterSupport; + ASSERT(map->count(internalFormat) == 0); + (*map)[internalFormat] = formatInfo; +} + +static InternalFormat LUMAFormat(GLuint luminance, GLuint alpha, GLenum format, GLenum type, GLenum componentType, + InternalFormat::SupportCheckFunction textureSupport, + InternalFormat::SupportCheckFunction renderSupport, + InternalFormat::SupportCheckFunction filterSupport) +{ + InternalFormat formatInfo; + formatInfo.internalFormat = GetSizedFormatInternal(format, 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.renderSupport = renderSupport; + formatInfo.filterSupport = filterSupport; + return formatInfo; +} + +void AddDepthStencilFormat(InternalFormatInfoMap *map, + GLenum internalFormat, + GLuint depthBits, + GLuint stencilBits, + GLuint unusedBits, + GLenum format, + GLenum type, + GLenum componentType, + InternalFormat::SupportCheckFunction textureSupport, + InternalFormat::SupportCheckFunction renderSupport, + InternalFormat::SupportCheckFunction filterSupport) +{ + InternalFormat formatInfo; + formatInfo.internalFormat = internalFormat; + 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.renderSupport = renderSupport; + formatInfo.filterSupport = filterSupport; + ASSERT(map->count(internalFormat) == 0); + (*map)[internalFormat] = formatInfo; +} + +static InternalFormat CompressedFormat(GLuint compressedBlockWidth, GLuint compressedBlockHeight, GLuint compressedBlockSize, + GLuint componentCount, GLenum format, GLenum type, bool srgb, + InternalFormat::SupportCheckFunction textureSupport, + InternalFormat::SupportCheckFunction renderSupport, + InternalFormat::SupportCheckFunction filterSupport) +{ + InternalFormat formatInfo; + formatInfo.internalFormat = format; + formatInfo.compressedBlockWidth = compressedBlockWidth; + formatInfo.compressedBlockHeight = compressedBlockHeight; + formatInfo.pixelBytes = compressedBlockSize / 8; + formatInfo.componentCount = componentCount; + formatInfo.format = format; + formatInfo.type = type; + formatInfo.componentType = GL_UNSIGNED_NORMALIZED; + formatInfo.colorEncoding = (srgb ? GL_SRGB : GL_LINEAR); + formatInfo.compressed = true; + formatInfo.textureSupport = textureSupport; + formatInfo.renderSupport = renderSupport; + formatInfo.filterSupport = filterSupport; + return formatInfo; +} + +static InternalFormatInfoMap BuildInternalFormatInfoMap() +{ + InternalFormatInfoMap map; + + // From ES 3.0.1 spec, table 3.12 + map.insert(InternalFormatInfoPair(GL_NONE, InternalFormat())); + + // clang-format off + + // | Internal format | R | G | B | A |S | Format | Type | Component type | SRGB | Texture supported | Renderable | Filterable | + AddRGBAFormat(&map, GL_R8, 8, 0, 0, 0, 0, GL_RED, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESOrExt<3, 0, &Extensions::textureRG>, RequireESOrExt<3, 0, &Extensions::textureRG>, AlwaysSupported); + AddRGBAFormat(&map, GL_R8_SNORM, 8, 0, 0, 0, 0, GL_RED, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireES<3, 0>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RG8, 8, 8, 0, 0, 0, GL_RG, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESOrExt<3, 0, &Extensions::textureRG>, RequireESOrExt<3, 0, &Extensions::textureRG>, AlwaysSupported); + AddRGBAFormat(&map, GL_RG8_SNORM, 8, 8, 0, 0, 0, GL_RG, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireES<3, 0>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB8, 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESOrExt<3, 0, &Extensions::rgb8rgba8>, RequireESOrExt<3, 0, &Extensions::rgb8rgba8>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB8_SNORM, 8, 8, 8, 0, 0, GL_RGB, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireES<3, 0>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB565, 5, 6, 5, 0, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_NORMALIZED, false, RequireES<2, 0>, RequireES<2, 0>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGBA4, 4, 4, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_NORMALIZED, false, RequireES<2, 0>, RequireES<2, 0>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB5_A1, 5, 5, 5, 1, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_NORMALIZED, false, RequireES<2, 0>, RequireES<2, 0>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGBA8, 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESOrExt<3, 0, &Extensions::rgb8rgba8>, RequireESOrExt<3, 0, &Extensions::rgb8rgba8>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGBA8_SNORM, 8, 8, 8, 8, 0, GL_RGBA, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireES<3, 0>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB10_A2, 10, 10, 10, 2, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, GL_UNSIGNED_NORMALIZED, false, RequireES<3, 0>, RequireES<3, 0>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB10_A2UI, 10, 10, 10, 2, 0, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_SRGB8, 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, true, RequireESOrExt<3, 0, &Extensions::sRGB>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_SRGB8_ALPHA8, 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, true, RequireESOrExt<3, 0, &Extensions::sRGB>, RequireESOrExt<3, 0, &Extensions::sRGB>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB9_E5, 9, 9, 9, 0, 5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, GL_FLOAT, false, RequireES<3, 0>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_R8I, 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_BYTE, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_R8UI, 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_R16I, 16, 0, 0, 0, 0, GL_RED_INTEGER, GL_SHORT, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_R16UI, 16, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_R32I, 32, 0, 0, 0, 0, GL_RED_INTEGER, GL_INT, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_R32UI, 32, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RG8I, 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_BYTE, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RG8UI, 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RG16I, 16, 16, 0, 0, 0, GL_RG_INTEGER, GL_SHORT, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RG16UI, 16, 16, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RG32I, 32, 32, 0, 0, 0, GL_RG_INTEGER, GL_INT, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_R11F_G11F_B10F, 11, 11, 10, 0, 0, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, GL_FLOAT, false, RequireES<3, 0>, RequireExt<&Extensions::colorBufferFloat>, AlwaysSupported); + AddRGBAFormat(&map, GL_RG32UI, 32, 32, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RGB8I, 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_BYTE, GL_INT, false, RequireES<3, 0>, NeverSupported, NeverSupported); + AddRGBAFormat(&map, GL_RGB8UI, 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireES<3, 0>, NeverSupported, NeverSupported); + AddRGBAFormat(&map, GL_RGB16I, 16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_SHORT, GL_INT, false, RequireES<3, 0>, NeverSupported, NeverSupported); + AddRGBAFormat(&map, GL_RGB16UI, 16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireES<3, 0>, NeverSupported, NeverSupported); + AddRGBAFormat(&map, GL_RGB32I, 32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_INT, GL_INT, false, RequireES<3, 0>, NeverSupported, NeverSupported); + AddRGBAFormat(&map, GL_RGB32UI, 32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireES<3, 0>, NeverSupported, NeverSupported); + AddRGBAFormat(&map, GL_RGBA8I, 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_BYTE, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RGBA8UI, 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RGBA16I, 16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_SHORT, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RGBA16UI, 16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RGBA32I, 32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_INT, GL_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + AddRGBAFormat(&map, GL_RGBA32UI, 32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireES<3, 0>, RequireES<3, 0>, NeverSupported); + + AddRGBAFormat(&map, GL_BGRA8_EXT, 8, 8, 8, 8, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireExt<&Extensions::textureFormatBGRA8888>, RequireExt<&Extensions::textureFormatBGRA8888>, AlwaysSupported); + AddRGBAFormat(&map, GL_BGRA4_ANGLEX, 4, 4, 4, 4, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, GL_UNSIGNED_NORMALIZED, false, RequireExt<&Extensions::textureFormatBGRA8888>, RequireExt<&Extensions::textureFormatBGRA8888>, AlwaysSupported); + AddRGBAFormat(&map, GL_BGR5_A1_ANGLEX, 5, 5, 5, 1, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, GL_UNSIGNED_NORMALIZED, false, RequireExt<&Extensions::textureFormatBGRA8888>, RequireExt<&Extensions::textureFormatBGRA8888>, AlwaysSupported); + + // Special format which is not really supported, so always false for all supports. + AddRGBAFormat(&map, GL_BGR565_ANGLEX, 5, 6, 5, 1, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_NORMALIZED, false, NeverSupported, NeverSupported, NeverSupported); + + // Floating point renderability and filtering is provided by OES_texture_float and OES_texture_half_float + // | Internal format | D |S | Format | Type | Comp | SRGB | Texture supported | Renderable | Filterable | + // | | | | | | type | | | | | + AddRGBAFormat(&map, GL_R16F, 16, 0, 0, 0, 0, GL_RED, GL_HALF_FLOAT, GL_FLOAT, false, HalfFloatSupportRG, HalfFloatRenderableSupportRG, RequireExt<&Extensions::textureHalfFloatLinear>); + AddRGBAFormat(&map, GL_RG16F, 16, 16, 0, 0, 0, GL_RG, GL_HALF_FLOAT, GL_FLOAT, false, HalfFloatSupportRG, HalfFloatRenderableSupportRG, RequireExt<&Extensions::textureHalfFloatLinear>); + AddRGBAFormat(&map, GL_RGB16F, 16, 16, 16, 0, 0, GL_RGB, GL_HALF_FLOAT, GL_FLOAT, false, HalfFloatSupport, HalfFloatRenderableSupport, RequireExt<&Extensions::textureHalfFloatLinear>); + AddRGBAFormat(&map, GL_RGBA16F, 16, 16, 16, 16, 0, GL_RGBA, GL_HALF_FLOAT, GL_FLOAT, false, HalfFloatSupport, HalfFloatRenderableSupport, RequireExt<&Extensions::textureHalfFloatLinear>); + AddRGBAFormat(&map, GL_R32F, 32, 0, 0, 0, 0, GL_RED, GL_FLOAT, GL_FLOAT, false, FloatSupportRG, FloatRenderableSupportRG, RequireExt<&Extensions::textureFloatLinear> ); + AddRGBAFormat(&map, GL_RG32F, 32, 32, 0, 0, 0, GL_RG, GL_FLOAT, GL_FLOAT, false, FloatSupportRG, FloatRenderableSupportRG, RequireExt<&Extensions::textureFloatLinear> ); + AddRGBAFormat(&map, GL_RGB32F, 32, 32, 32, 0, 0, GL_RGB, GL_FLOAT, GL_FLOAT, false, FloatSupport, FloatRenderableSupport, RequireExt<&Extensions::textureFloatLinear> ); + AddRGBAFormat(&map, GL_RGBA32F, 32, 32, 32, 32, 0, GL_RGBA, GL_FLOAT, GL_FLOAT, false, FloatSupport, FloatRenderableSupport, RequireExt<&Extensions::textureFloatLinear> ); + + // Depth stencil formats + // | Internal format | D |S | X | Format | Type | Component type | Supported | Renderable | Filterable | + AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT16, 16, 0, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, GL_UNSIGNED_NORMALIZED, RequireES<2, 0>, RequireES<2, 0>, RequireESOrExt<3, 0, &Extensions::depthTextures>); + AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT24, 24, 0, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, GL_UNSIGNED_NORMALIZED, RequireES<3, 0>, RequireES<3, 0>, RequireESOrExt<3, 0, &Extensions::depthTextures>); + AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT32F, 32, 0, 0, GL_DEPTH_COMPONENT, GL_FLOAT, GL_FLOAT, RequireES<3, 0>, RequireES<3, 0>, RequireESOrExt<3, 0, &Extensions::depthTextures>); + AddDepthStencilFormat(&map, GL_DEPTH_COMPONENT32_OES, 32, 0, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, GL_UNSIGNED_NORMALIZED, RequireExtOrExt<&Extensions::depthTextures, &Extensions::depth32>, RequireExtOrExt<&Extensions::depthTextures, &Extensions::depth32>, AlwaysSupported ); + AddDepthStencilFormat(&map, GL_DEPTH24_STENCIL8, 24, 8, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, GL_UNSIGNED_NORMALIZED, RequireESOrExt<3, 0, &Extensions::depthTextures>, RequireESOrExtOrExt<3, 0, &Extensions::depthTextures, &Extensions::packedDepthStencil>, AlwaysSupported ); + AddDepthStencilFormat(&map, GL_DEPTH32F_STENCIL8, 32, 8, 24, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, GL_FLOAT, RequireES<3, 0>, RequireES<3, 0>, AlwaysSupported ); + // STENCIL_INDEX8 is special-cased, see around the bottom of the list. + + // Luminance alpha formats + // | Internal format | | L | A | Format | Type | Component type | Supported | Renderable | Filterable | + map.insert(InternalFormatInfoPair(GL_ALPHA8_EXT, LUMAFormat( 0, 8, GL_ALPHA, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, RequireExt<&Extensions::textureStorage>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_LUMINANCE8_EXT, LUMAFormat( 8, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, RequireExt<&Extensions::textureStorage>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_ALPHA32F_EXT, LUMAFormat( 0, 32, GL_ALPHA, GL_FLOAT, GL_FLOAT, RequireExtAndExt<&Extensions::textureStorage, &Extensions::textureFloat>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_LUMINANCE32F_EXT, LUMAFormat(32, 0, GL_LUMINANCE, GL_FLOAT, GL_FLOAT, RequireExtAndExt<&Extensions::textureStorage, &Extensions::textureFloat>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_ALPHA16F_EXT, LUMAFormat( 0, 16, GL_ALPHA, GL_HALF_FLOAT, GL_FLOAT, RequireExtAndExt<&Extensions::textureStorage, &Extensions::textureHalfFloat>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_LUMINANCE16F_EXT, LUMAFormat(16, 0, GL_LUMINANCE, GL_HALF_FLOAT, GL_FLOAT, RequireExtAndExt<&Extensions::textureStorage, &Extensions::textureHalfFloat>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_LUMINANCE8_ALPHA8_EXT, LUMAFormat( 8, 8, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, RequireExt<&Extensions::textureStorage>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA32F_EXT, LUMAFormat(32, 32, GL_LUMINANCE_ALPHA, GL_FLOAT, GL_FLOAT, RequireExtAndExt<&Extensions::textureStorage, &Extensions::textureFloat>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA16F_EXT, LUMAFormat(16, 16, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT, GL_FLOAT, RequireExtAndExt<&Extensions::textureStorage, &Extensions::textureHalfFloat>, NeverSupported, AlwaysSupported))); + + // Unsized formats + // | Internal format | Format | Supported | Renderable | Filterable | + AddUnsizedFormat(&map, GL_ALPHA, GL_ALPHA, RequireES<2, 0>, NeverSupported, AlwaysSupported); + AddUnsizedFormat(&map, GL_LUMINANCE, GL_LUMINANCE, RequireES<2, 0>, NeverSupported, AlwaysSupported); + AddUnsizedFormat(&map, GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, RequireES<2, 0>, NeverSupported, AlwaysSupported); + AddUnsizedFormat(&map, GL_RED, GL_RED, RequireESOrExt<3, 0, &Extensions::textureRG>, NeverSupported, AlwaysSupported); + AddUnsizedFormat(&map, GL_RG, GL_RG, RequireESOrExt<3, 0, &Extensions::textureRG>, NeverSupported, AlwaysSupported); + AddUnsizedFormat(&map, GL_RGB, GL_RGB, RequireES<2, 0>, RequireES<2, 0>, AlwaysSupported); + AddUnsizedFormat(&map, GL_RGBA, GL_RGBA, RequireES<2, 0>, RequireES<2, 0>, AlwaysSupported); + AddUnsizedFormat(&map, GL_RED_INTEGER, GL_RED_INTEGER, RequireES<3, 0>, NeverSupported, NeverSupported ); + AddUnsizedFormat(&map, GL_RG_INTEGER, GL_RG_INTEGER, RequireES<3, 0>, NeverSupported, NeverSupported ); + AddUnsizedFormat(&map, GL_RGB_INTEGER, GL_RGB_INTEGER, RequireES<3, 0>, NeverSupported, NeverSupported ); + AddUnsizedFormat(&map, GL_RGBA_INTEGER, GL_RGBA_INTEGER, RequireES<3, 0>, NeverSupported, NeverSupported ); + AddUnsizedFormat(&map, GL_BGRA_EXT, GL_BGRA_EXT, RequireExt<&Extensions::textureFormatBGRA8888>, RequireExt<&Extensions::textureFormatBGRA8888>, AlwaysSupported); + AddUnsizedFormat(&map, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, RequireES<2, 0>, RequireES<2, 0>, AlwaysSupported); + AddUnsizedFormat(&map, GL_DEPTH_STENCIL, GL_DEPTH_STENCIL, RequireESOrExt<3, 0, &Extensions::packedDepthStencil>, RequireESOrExt<3, 0, &Extensions::packedDepthStencil>, AlwaysSupported); + AddUnsizedFormat(&map, GL_SRGB_EXT, GL_RGB, RequireESOrExt<3, 0, &Extensions::sRGB>, NeverSupported, AlwaysSupported); + AddUnsizedFormat(&map, GL_SRGB_ALPHA_EXT, GL_RGBA, RequireESOrExt<3, 0, &Extensions::sRGB>, RequireESOrExt<3, 0, &Extensions::sRGB>, AlwaysSupported); + + // Compressed formats, From ES 3.0.1 spec, table 3.16 + // | Internal format | |W |H | BS |CC| Format | Type | SRGB | Supported | Renderable | Filterable | + map.insert(InternalFormatInfoPair(GL_COMPRESSED_R11_EAC, CompressedFormat(4, 4, 64, 1, GL_COMPRESSED_R11_EAC, GL_UNSIGNED_BYTE, false, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SIGNED_R11_EAC, CompressedFormat(4, 4, 64, 1, GL_COMPRESSED_SIGNED_R11_EAC, GL_UNSIGNED_BYTE, false, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RG11_EAC, CompressedFormat(4, 4, 128, 2, GL_COMPRESSED_RG11_EAC, GL_UNSIGNED_BYTE, false, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SIGNED_RG11_EAC, CompressedFormat(4, 4, 128, 2, GL_COMPRESSED_SIGNED_RG11_EAC, GL_UNSIGNED_BYTE, false, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB8_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB8_ETC2, GL_UNSIGNED_BYTE, false, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_SRGB8_ETC2, GL_UNSIGNED_BYTE, true, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE, false, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE, true, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA8_ETC2_EAC, CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA8_ETC2_EAC, GL_UNSIGNED_BYTE, false, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, GL_UNSIGNED_BYTE, true, RequireES<3, 0>, NeverSupported, AlwaysSupported))); + + // From GL_EXT_texture_compression_dxt1 + // | Internal format | |W |H | BS |CC| Format | Type | SRGB | Supported | Renderable | Filterable | + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB_S3TC_DXT1_EXT, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, false, RequireExt<&Extensions::textureCompressionDXT1>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, CompressedFormat(4, 4, 64, 4, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, false, RequireExt<&Extensions::textureCompressionDXT1>, NeverSupported, AlwaysSupported))); + + // From GL_ANGLE_texture_compression_dxt3 + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE, false, RequireExt<&Extensions::textureCompressionDXT5>, NeverSupported, AlwaysSupported))); + + // From GL_ANGLE_texture_compression_dxt5 + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE, false, RequireExt<&Extensions::textureCompressionDXT5>, NeverSupported, AlwaysSupported))); + + // From GL_OES_compressed_ETC1_RGB8_texture + map.insert(InternalFormatInfoPair(GL_ETC1_RGB8_OES, CompressedFormat(4, 4, 64, 3, GL_ETC1_RGB8_OES, GL_UNSIGNED_BYTE, false, RequireExt<&Extensions::compressedETC1RGB8Texture>, NeverSupported, AlwaysSupported))); + + // From KHR_texture_compression_astc_hdr + // | Internal format | | W | H | BS |CC| Format | Type | SRGB | Supported | Renderable | Filterable | + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_4x4_KHR, CompressedFormat( 4, 4, 128, 4, GL_COMPRESSED_RGBA_ASTC_4x4_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_5x4_KHR, CompressedFormat( 5, 4, 128, 4, GL_COMPRESSED_RGBA_ASTC_5x4_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_5x5_KHR, CompressedFormat( 5, 5, 128, 4, GL_COMPRESSED_RGBA_ASTC_5x5_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_6x5_KHR, CompressedFormat( 6, 5, 128, 4, GL_COMPRESSED_RGBA_ASTC_6x5_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_6x6_KHR, CompressedFormat( 6, 6, 128, 4, GL_COMPRESSED_RGBA_ASTC_6x6_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_8x5_KHR, CompressedFormat( 8, 5, 128, 4, GL_COMPRESSED_RGBA_ASTC_8x5_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_8x6_KHR, CompressedFormat( 8, 6, 128, 4, GL_COMPRESSED_RGBA_ASTC_8x6_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_8x8_KHR, CompressedFormat( 8, 8, 128, 4, GL_COMPRESSED_RGBA_ASTC_8x8_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_10x5_KHR, CompressedFormat(10, 5, 128, 4, GL_COMPRESSED_RGBA_ASTC_10x5_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_10x6_KHR, CompressedFormat(10, 6, 128, 4, GL_COMPRESSED_RGBA_ASTC_10x6_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_10x8_KHR, CompressedFormat(10, 8, 128, 4, GL_COMPRESSED_RGBA_ASTC_10x8_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_10x10_KHR, CompressedFormat(10, 10, 128, 4, GL_COMPRESSED_RGBA_ASTC_10x10_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_12x10_KHR, CompressedFormat(12, 10, 128, 4, GL_COMPRESSED_RGBA_ASTC_12x10_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_ASTC_12x12_KHR, CompressedFormat(12, 12, 128, 4, GL_COMPRESSED_RGBA_ASTC_12x12_KHR, GL_UNSIGNED_BYTE, false, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, CompressedFormat( 4, 4, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, CompressedFormat( 5, 4, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, CompressedFormat( 5, 5, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, CompressedFormat( 6, 5, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, CompressedFormat( 6, 6, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, CompressedFormat( 8, 5, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, CompressedFormat( 8, 6, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, CompressedFormat( 8, 8, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, CompressedFormat(10, 5, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, CompressedFormat(10, 6, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, CompressedFormat(10, 8, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, CompressedFormat(10, 10, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, CompressedFormat(12, 10, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, CompressedFormat(12, 12, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, GL_UNSIGNED_BYTE, true, RequireExtOrExt<&Extensions::textureCompressionASTCHDR, &Extensions::textureCompressionASTCLDR>, NeverSupported, AlwaysSupported))); + + // 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 want to support it for STENCIL_INDEX8 + // - All other stencil formats (all depth-stencil) are either float or normalized + // - It affects only validation of internalformat in RenderbufferStorageMultisample. + // | Internal format |D |S |X | Format | Type | Component type | Supported | Renderable | Filterable | + AddDepthStencilFormat(&map, GL_STENCIL_INDEX8, 0, 8, 0, GL_STENCIL, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, RequireES<2, 0>, RequireES<2, 0>, NeverSupported); + + // From GL_ANGLE_lossy_etc_decode + map.insert(InternalFormatInfoPair(GL_ETC1_RGB8_LOSSY_DECODE_ANGLE, CompressedFormat(4, 4, 64, 3, GL_ETC1_RGB8_LOSSY_DECODE_ANGLE, GL_UNSIGNED_BYTE, false, RequireExt<&Extensions::lossyETCDecode>, NeverSupported, AlwaysSupported))); + + // From GL_EXT_texture_norm16 + // | Internal format | R | G | B | A |S | Format | Type | Component type | SRGB | Texture supported | Renderable | Filterable | + AddRGBAFormat(&map, GL_R16_EXT, 16, 0, 0, 0, 0, GL_RED, GL_UNSIGNED_SHORT, GL_UNSIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, RequireExt<&Extensions::textureNorm16>, AlwaysSupported); + AddRGBAFormat(&map, GL_R16_SNORM_EXT, 16, 0, 0, 0, 0, GL_RED, GL_SHORT, GL_SIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RG16_EXT, 16, 16, 0, 0, 0, GL_RG, GL_UNSIGNED_SHORT, GL_UNSIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, RequireExt<&Extensions::textureNorm16>, AlwaysSupported); + AddRGBAFormat(&map, GL_RG16_SNORM_EXT, 16, 16, 0, 0, 0, GL_RG, GL_SHORT, GL_SIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB16_EXT, 16, 16, 16, 0, 0, GL_RGB, GL_UNSIGNED_SHORT, GL_UNSIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RGB16_SNORM_EXT, 16, 16, 16, 0, 0, GL_RGB, GL_SHORT, GL_SIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, NeverSupported, AlwaysSupported); + AddRGBAFormat(&map, GL_RGBA16_EXT, 16, 16, 16, 16, 0, GL_RGBA, GL_UNSIGNED_SHORT, GL_UNSIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, RequireExt<&Extensions::textureNorm16>, AlwaysSupported); + AddRGBAFormat(&map, GL_RGBA16_SNORM_EXT, 16, 16, 16, 16, 0, GL_RGBA, GL_SHORT, GL_SIGNED_NORMALIZED, false, RequireExt<&Extensions::textureNorm16>, NeverSupported, AlwaysSupported); + + // clang-format on + + return map; +} + +static const InternalFormatInfoMap &GetInternalFormatMap() +{ + static const InternalFormatInfoMap formatMap = BuildInternalFormatInfoMap(); + return formatMap; +} + +static FormatSet BuildAllSizedInternalFormatSet() +{ + FormatSet result; + + for (auto iter : GetInternalFormatMap()) + { + if (iter.second.pixelBytes > 0) + { + // TODO(jmadill): Fix this hack. + if (iter.first == GL_BGR565_ANGLEX) + continue; + + result.insert(iter.first); + } + } + + return result; +} + +const Type &GetTypeInfo(GLenum type) +{ + switch (type) + { + case GL_UNSIGNED_BYTE: + case GL_BYTE: + { + static const Type info = GenTypeInfo(1, false); + return info; + } + case GL_UNSIGNED_SHORT: + case GL_SHORT: + case GL_HALF_FLOAT: + case GL_HALF_FLOAT_OES: + { + static const Type info = GenTypeInfo(2, false); + return info; + } + case GL_UNSIGNED_INT: + case GL_INT: + case GL_FLOAT: + { + static const Type info = GenTypeInfo(4, false); + return info; + } + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT: + case GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT: + { + static const Type info = GenTypeInfo(2, true); + return info; + } + case GL_UNSIGNED_INT_2_10_10_10_REV: + case GL_UNSIGNED_INT_24_8: + case GL_UNSIGNED_INT_10F_11F_11F_REV: + case GL_UNSIGNED_INT_5_9_9_9_REV: + { + ASSERT(GL_UNSIGNED_INT_24_8_OES == GL_UNSIGNED_INT_24_8); + static const Type info = GenTypeInfo(4, true); + return info; + } + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + { + static const Type info = GenTypeInfo(8, true); + return info; + } + default: + { + static const Type defaultInfo; + return defaultInfo; + } + } +} + +const InternalFormat &GetInternalFormatInfo(GLenum internalFormat) +{ + const InternalFormatInfoMap &formatMap = GetInternalFormatMap(); + auto iter = formatMap.find(internalFormat); + if (iter != formatMap.end()) + { + return iter->second; + } + else + { + static const InternalFormat defaultInternalFormat; + return defaultInternalFormat; + } +} + +ErrorOrResult<GLuint> InternalFormat::computeRowPitch(GLsizei width, + GLint alignment, + GLint rowLength) const +{ + // Compressed images do not use pack/unpack parameters. + if (compressed) + { + ASSERT(rowLength == 0); + return computeCompressedImageSize(Extents(width, 1, 1)); + } + + CheckedNumeric<GLuint> checkedWidth(rowLength > 0 ? rowLength : width); + CheckedNumeric<GLuint> checkedRowBytes = checkedWidth * pixelBytes; + + ASSERT(alignment > 0 && isPow2(alignment)); + CheckedNumeric<GLuint> checkedAlignment(alignment); + auto aligned = rx::roundUp(checkedRowBytes, checkedAlignment); + ANGLE_TRY_CHECKED_MATH(aligned); + return aligned.ValueOrDie(); +} + +ErrorOrResult<GLuint> InternalFormat::computeDepthPitch(GLsizei height, + GLint imageHeight, + GLuint rowPitch) +{ + GLuint rows = + (imageHeight > 0 ? static_cast<GLuint>(imageHeight) : static_cast<GLuint>(height)); + CheckedNumeric<GLuint> checkedRowPitch(rowPitch); + + auto depthPitch = checkedRowPitch * rows; + ANGLE_TRY_CHECKED_MATH(depthPitch); + return depthPitch.ValueOrDie(); +} + +ErrorOrResult<GLuint> InternalFormat::computeDepthPitch(GLsizei width, + GLsizei height, + GLint alignment, + GLint rowLength, + GLint imageHeight) const +{ + GLuint rowPitch = 0; + ANGLE_TRY_RESULT(computeRowPitch(width, alignment, rowLength), rowPitch); + return computeDepthPitch(height, imageHeight, rowPitch); +} + +ErrorOrResult<GLuint> InternalFormat::computeCompressedImageSize(const Extents &size) const +{ + CheckedNumeric<GLuint> checkedWidth(size.width); + CheckedNumeric<GLuint> checkedHeight(size.height); + CheckedNumeric<GLuint> checkedDepth(size.depth); + CheckedNumeric<GLuint> checkedBlockWidth(compressedBlockWidth); + CheckedNumeric<GLuint> checkedBlockHeight(compressedBlockHeight); + + ASSERT(compressed); + auto numBlocksWide = (checkedWidth + checkedBlockWidth - 1u) / checkedBlockWidth; + auto numBlocksHigh = (checkedHeight + checkedBlockHeight - 1u) / checkedBlockHeight; + auto bytes = numBlocksWide * numBlocksHigh * pixelBytes * checkedDepth; + ANGLE_TRY_CHECKED_MATH(bytes); + return bytes.ValueOrDie(); +} + +ErrorOrResult<GLuint> InternalFormat::computeSkipBytes(GLuint rowPitch, + GLuint depthPitch, + const PixelStoreStateBase &state, + bool is3D) const +{ + CheckedNumeric<GLuint> checkedRowPitch(rowPitch); + CheckedNumeric<GLuint> checkedDepthPitch(depthPitch); + CheckedNumeric<GLuint> checkedSkipImages(static_cast<GLuint>(state.skipImages)); + CheckedNumeric<GLuint> checkedSkipRows(static_cast<GLuint>(state.skipRows)); + CheckedNumeric<GLuint> checkedSkipPixels(static_cast<GLuint>(state.skipPixels)); + CheckedNumeric<GLuint> checkedPixelBytes(pixelBytes); + auto checkedSkipImagesBytes = checkedSkipImages * checkedDepthPitch; + if (!is3D) + { + checkedSkipImagesBytes = 0; + } + auto skipBytes = checkedSkipImagesBytes + checkedSkipRows * checkedRowPitch + + checkedSkipPixels * checkedPixelBytes; + ANGLE_TRY_CHECKED_MATH(skipBytes); + return skipBytes.ValueOrDie(); +} + +ErrorOrResult<GLuint> InternalFormat::computePackUnpackEndByte(const Extents &size, + const PixelStoreStateBase &state, + bool is3D) const +{ + GLuint rowPitch = 0; + ANGLE_TRY_RESULT(computeRowPitch(size.width, state.alignment, state.rowLength), + rowPitch); + + GLuint depthPitch = 0; + if (is3D) + { + ANGLE_TRY_RESULT(computeDepthPitch(size.height, state.imageHeight, rowPitch), depthPitch); + } + + CheckedNumeric<GLuint> checkedCopyBytes = 0; + if (compressed) + { + ANGLE_TRY_RESULT(computeCompressedImageSize(size), checkedCopyBytes); + } + else if (size.height != 0 && (!is3D || size.depth != 0)) + { + CheckedNumeric<GLuint> bytes = pixelBytes; + checkedCopyBytes += size.width * bytes; + + CheckedNumeric<GLuint> heightMinusOne = size.height - 1; + checkedCopyBytes += heightMinusOne * rowPitch; + + if (is3D) + { + CheckedNumeric<GLuint> depthMinusOne = size.depth - 1; + checkedCopyBytes += depthMinusOne * depthPitch; + } + } + + CheckedNumeric<GLuint> checkedSkipBytes = 0; + ANGLE_TRY_RESULT(computeSkipBytes(rowPitch, depthPitch, state, is3D), + checkedSkipBytes); + + CheckedNumeric<GLuint> endByte = checkedCopyBytes + checkedSkipBytes; + + ANGLE_TRY_CHECKED_MATH(endByte); + return endByte.ValueOrDie(); +} + +GLenum GetSizedInternalFormat(GLenum internalFormat, GLenum type) +{ + const InternalFormat &formatInfo = GetInternalFormatInfo(internalFormat); + if (formatInfo.pixelBytes > 0) + { + return internalFormat; + } + return GetSizedFormatInternal(internalFormat, type); +} + +const FormatSet &GetAllSizedInternalFormats() +{ + static FormatSet formatSet = BuildAllSizedInternalFormatSet(); + return formatSet; +} + +AttributeType GetAttributeType(GLenum enumValue) +{ + switch (enumValue) + { + case GL_FLOAT: + return ATTRIBUTE_FLOAT; + case GL_FLOAT_VEC2: + return ATTRIBUTE_VEC2; + case GL_FLOAT_VEC3: + return ATTRIBUTE_VEC3; + case GL_FLOAT_VEC4: + return ATTRIBUTE_VEC4; + case GL_INT: + return ATTRIBUTE_INT; + case GL_INT_VEC2: + return ATTRIBUTE_IVEC2; + case GL_INT_VEC3: + return ATTRIBUTE_IVEC3; + case GL_INT_VEC4: + return ATTRIBUTE_IVEC4; + case GL_UNSIGNED_INT: + return ATTRIBUTE_UINT; + case GL_UNSIGNED_INT_VEC2: + return ATTRIBUTE_UVEC2; + case GL_UNSIGNED_INT_VEC3: + return ATTRIBUTE_UVEC3; + case GL_UNSIGNED_INT_VEC4: + return ATTRIBUTE_UVEC4; + case GL_FLOAT_MAT2: + return ATTRIBUTE_MAT2; + case GL_FLOAT_MAT3: + return ATTRIBUTE_MAT3; + case GL_FLOAT_MAT4: + return ATTRIBUTE_MAT4; + case GL_FLOAT_MAT2x3: + return ATTRIBUTE_MAT2x3; + case GL_FLOAT_MAT2x4: + return ATTRIBUTE_MAT2x4; + case GL_FLOAT_MAT3x2: + return ATTRIBUTE_MAT3x2; + case GL_FLOAT_MAT3x4: + return ATTRIBUTE_MAT3x4; + case GL_FLOAT_MAT4x2: + return ATTRIBUTE_MAT4x2; + case GL_FLOAT_MAT4x3: + return ATTRIBUTE_MAT4x3; + default: + UNREACHABLE(); + return ATTRIBUTE_FLOAT; + } +} + +VertexFormatType GetVertexFormatType(GLenum type, GLboolean normalized, GLuint components, bool pureInteger) +{ + switch (type) + { + case GL_BYTE: + switch (components) + { + case 1: + if (pureInteger) + return VERTEX_FORMAT_SBYTE1_INT; + if (normalized) + return VERTEX_FORMAT_SBYTE1_NORM; + return VERTEX_FORMAT_SBYTE1; + case 2: + if (pureInteger) + return VERTEX_FORMAT_SBYTE2_INT; + if (normalized) + return VERTEX_FORMAT_SBYTE2_NORM; + return VERTEX_FORMAT_SBYTE2; + case 3: + if (pureInteger) + return VERTEX_FORMAT_SBYTE3_INT; + if (normalized) + return VERTEX_FORMAT_SBYTE3_NORM; + return VERTEX_FORMAT_SBYTE3; + case 4: + if (pureInteger) + return VERTEX_FORMAT_SBYTE4_INT; + if (normalized) + return VERTEX_FORMAT_SBYTE4_NORM; + return VERTEX_FORMAT_SBYTE4; + default: + UNREACHABLE(); + break; + } + case GL_UNSIGNED_BYTE: + switch (components) + { + case 1: + if (pureInteger) + return VERTEX_FORMAT_UBYTE1_INT; + if (normalized) + return VERTEX_FORMAT_UBYTE1_NORM; + return VERTEX_FORMAT_UBYTE1; + case 2: + if (pureInteger) + return VERTEX_FORMAT_UBYTE2_INT; + if (normalized) + return VERTEX_FORMAT_UBYTE2_NORM; + return VERTEX_FORMAT_UBYTE2; + case 3: + if (pureInteger) + return VERTEX_FORMAT_UBYTE3_INT; + if (normalized) + return VERTEX_FORMAT_UBYTE3_NORM; + return VERTEX_FORMAT_UBYTE3; + case 4: + if (pureInteger) + return VERTEX_FORMAT_UBYTE4_INT; + if (normalized) + return VERTEX_FORMAT_UBYTE4_NORM; + return VERTEX_FORMAT_UBYTE4; + default: + UNREACHABLE(); + break; + } + case GL_SHORT: + switch (components) + { + case 1: + if (pureInteger) + return VERTEX_FORMAT_SSHORT1_INT; + if (normalized) + return VERTEX_FORMAT_SSHORT1_NORM; + return VERTEX_FORMAT_SSHORT1; + case 2: + if (pureInteger) + return VERTEX_FORMAT_SSHORT2_INT; + if (normalized) + return VERTEX_FORMAT_SSHORT2_NORM; + return VERTEX_FORMAT_SSHORT2; + case 3: + if (pureInteger) + return VERTEX_FORMAT_SSHORT3_INT; + if (normalized) + return VERTEX_FORMAT_SSHORT3_NORM; + return VERTEX_FORMAT_SSHORT3; + case 4: + if (pureInteger) + return VERTEX_FORMAT_SSHORT4_INT; + if (normalized) + return VERTEX_FORMAT_SSHORT4_NORM; + return VERTEX_FORMAT_SSHORT4; + default: + UNREACHABLE(); + break; + } + case GL_UNSIGNED_SHORT: + switch (components) + { + case 1: + if (pureInteger) + return VERTEX_FORMAT_USHORT1_INT; + if (normalized) + return VERTEX_FORMAT_USHORT1_NORM; + return VERTEX_FORMAT_USHORT1; + case 2: + if (pureInteger) + return VERTEX_FORMAT_USHORT2_INT; + if (normalized) + return VERTEX_FORMAT_USHORT2_NORM; + return VERTEX_FORMAT_USHORT2; + case 3: + if (pureInteger) + return VERTEX_FORMAT_USHORT3_INT; + if (normalized) + return VERTEX_FORMAT_USHORT3_NORM; + return VERTEX_FORMAT_USHORT3; + case 4: + if (pureInteger) + return VERTEX_FORMAT_USHORT4_INT; + if (normalized) + return VERTEX_FORMAT_USHORT4_NORM; + return VERTEX_FORMAT_USHORT4; + default: + UNREACHABLE(); + break; + } + case GL_INT: + switch (components) + { + case 1: + if (pureInteger) + return VERTEX_FORMAT_SINT1_INT; + if (normalized) + return VERTEX_FORMAT_SINT1_NORM; + return VERTEX_FORMAT_SINT1; + case 2: + if (pureInteger) + return VERTEX_FORMAT_SINT2_INT; + if (normalized) + return VERTEX_FORMAT_SINT2_NORM; + return VERTEX_FORMAT_SINT2; + case 3: + if (pureInteger) + return VERTEX_FORMAT_SINT3_INT; + if (normalized) + return VERTEX_FORMAT_SINT3_NORM; + return VERTEX_FORMAT_SINT3; + case 4: + if (pureInteger) + return VERTEX_FORMAT_SINT4_INT; + if (normalized) + return VERTEX_FORMAT_SINT4_NORM; + return VERTEX_FORMAT_SINT4; + default: + UNREACHABLE(); + break; + } + case GL_UNSIGNED_INT: + switch (components) + { + case 1: + if (pureInteger) + return VERTEX_FORMAT_UINT1_INT; + if (normalized) + return VERTEX_FORMAT_UINT1_NORM; + return VERTEX_FORMAT_UINT1; + case 2: + if (pureInteger) + return VERTEX_FORMAT_UINT2_INT; + if (normalized) + return VERTEX_FORMAT_UINT2_NORM; + return VERTEX_FORMAT_UINT2; + case 3: + if (pureInteger) + return VERTEX_FORMAT_UINT3_INT; + if (normalized) + return VERTEX_FORMAT_UINT3_NORM; + return VERTEX_FORMAT_UINT3; + case 4: + if (pureInteger) + return VERTEX_FORMAT_UINT4_INT; + if (normalized) + return VERTEX_FORMAT_UINT4_NORM; + return VERTEX_FORMAT_UINT4; + default: + UNREACHABLE(); + break; + } + case GL_FLOAT: + switch (components) + { + case 1: + return VERTEX_FORMAT_FLOAT1; + case 2: + return VERTEX_FORMAT_FLOAT2; + case 3: + return VERTEX_FORMAT_FLOAT3; + case 4: + return VERTEX_FORMAT_FLOAT4; + default: + UNREACHABLE(); + break; + } + case GL_HALF_FLOAT: + switch (components) + { + case 1: + return VERTEX_FORMAT_HALF1; + case 2: + return VERTEX_FORMAT_HALF2; + case 3: + return VERTEX_FORMAT_HALF3; + case 4: + return VERTEX_FORMAT_HALF4; + default: + UNREACHABLE(); + break; + } + case GL_FIXED: + switch (components) + { + case 1: + return VERTEX_FORMAT_FIXED1; + case 2: + return VERTEX_FORMAT_FIXED2; + case 3: + return VERTEX_FORMAT_FIXED3; + case 4: + return VERTEX_FORMAT_FIXED4; + default: + UNREACHABLE(); + break; + } + case GL_INT_2_10_10_10_REV: + if (pureInteger) + return VERTEX_FORMAT_SINT210_INT; + if (normalized) + return VERTEX_FORMAT_SINT210_NORM; + return VERTEX_FORMAT_SINT210; + case GL_UNSIGNED_INT_2_10_10_10_REV: + if (pureInteger) + return VERTEX_FORMAT_UINT210_INT; + if (normalized) + return VERTEX_FORMAT_UINT210_NORM; + return VERTEX_FORMAT_UINT210; + default: + UNREACHABLE(); + break; + } + return VERTEX_FORMAT_UBYTE1; +} + +VertexFormatType GetVertexFormatType(const VertexAttribute &attrib) +{ + return GetVertexFormatType(attrib.type, attrib.normalized, attrib.size, attrib.pureInteger); +} + +VertexFormatType GetVertexFormatType(const VertexAttribute &attrib, GLenum currentValueType) +{ + if (!attrib.enabled) + { + return GetVertexFormatType(currentValueType, GL_FALSE, 4, (currentValueType != GL_FLOAT)); + } + return GetVertexFormatType(attrib); +} + +const VertexFormat &GetVertexFormatFromType(VertexFormatType vertexFormatType) +{ + switch (vertexFormatType) + { + case VERTEX_FORMAT_SBYTE1: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_SBYTE1_NORM: + { + static const VertexFormat format(GL_BYTE, GL_TRUE, 1, false); + return format; + } + case VERTEX_FORMAT_SBYTE2: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_SBYTE2_NORM: + { + static const VertexFormat format(GL_BYTE, GL_TRUE, 2, false); + return format; + } + case VERTEX_FORMAT_SBYTE3: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_SBYTE3_NORM: + { + static const VertexFormat format(GL_BYTE, GL_TRUE, 3, false); + return format; + } + case VERTEX_FORMAT_SBYTE4: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_SBYTE4_NORM: + { + static const VertexFormat format(GL_BYTE, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_UBYTE1: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_UBYTE1_NORM: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_TRUE, 1, false); + return format; + } + case VERTEX_FORMAT_UBYTE2: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_UBYTE2_NORM: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_TRUE, 2, false); + return format; + } + case VERTEX_FORMAT_UBYTE3: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_UBYTE3_NORM: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_TRUE, 3, false); + return format; + } + case VERTEX_FORMAT_UBYTE4: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_UBYTE4_NORM: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_SSHORT1: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_SSHORT1_NORM: + { + static const VertexFormat format(GL_SHORT, GL_TRUE, 1, false); + return format; + } + case VERTEX_FORMAT_SSHORT2: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_SSHORT2_NORM: + { + static const VertexFormat format(GL_SHORT, GL_TRUE, 2, false); + return format; + } + case VERTEX_FORMAT_SSHORT3: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_SSHORT3_NORM: + { + static const VertexFormat format(GL_SHORT, GL_TRUE, 3, false); + return format; + } + case VERTEX_FORMAT_SSHORT4: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_SSHORT4_NORM: + { + static const VertexFormat format(GL_SHORT, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_USHORT1: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_USHORT1_NORM: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_TRUE, 1, false); + return format; + } + case VERTEX_FORMAT_USHORT2: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_USHORT2_NORM: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_TRUE, 2, false); + return format; + } + case VERTEX_FORMAT_USHORT3: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_USHORT3_NORM: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_TRUE, 3, false); + return format; + } + case VERTEX_FORMAT_USHORT4: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_USHORT4_NORM: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_SINT1: + { + static const VertexFormat format(GL_INT, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_SINT1_NORM: + { + static const VertexFormat format(GL_INT, GL_TRUE, 1, false); + return format; + } + case VERTEX_FORMAT_SINT2: + { + static const VertexFormat format(GL_INT, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_SINT2_NORM: + { + static const VertexFormat format(GL_INT, GL_TRUE, 2, false); + return format; + } + case VERTEX_FORMAT_SINT3: + { + static const VertexFormat format(GL_INT, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_SINT3_NORM: + { + static const VertexFormat format(GL_INT, GL_TRUE, 3, false); + return format; + } + case VERTEX_FORMAT_SINT4: + { + static const VertexFormat format(GL_INT, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_SINT4_NORM: + { + static const VertexFormat format(GL_INT, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_UINT1: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_UINT1_NORM: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_TRUE, 1, false); + return format; + } + case VERTEX_FORMAT_UINT2: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_UINT2_NORM: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_TRUE, 2, false); + return format; + } + case VERTEX_FORMAT_UINT3: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_UINT3_NORM: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_TRUE, 3, false); + return format; + } + case VERTEX_FORMAT_UINT4: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_UINT4_NORM: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_SBYTE1_INT: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 1, true); + return format; + } + case VERTEX_FORMAT_SBYTE2_INT: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 2, true); + return format; + } + case VERTEX_FORMAT_SBYTE3_INT: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 3, true); + return format; + } + case VERTEX_FORMAT_SBYTE4_INT: + { + static const VertexFormat format(GL_BYTE, GL_FALSE, 4, true); + return format; + } + case VERTEX_FORMAT_UBYTE1_INT: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 1, true); + return format; + } + case VERTEX_FORMAT_UBYTE2_INT: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 2, true); + return format; + } + case VERTEX_FORMAT_UBYTE3_INT: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 3, true); + return format; + } + case VERTEX_FORMAT_UBYTE4_INT: + { + static const VertexFormat format(GL_UNSIGNED_BYTE, GL_FALSE, 4, true); + return format; + } + case VERTEX_FORMAT_SSHORT1_INT: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 1, true); + return format; + } + case VERTEX_FORMAT_SSHORT2_INT: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 2, true); + return format; + } + case VERTEX_FORMAT_SSHORT3_INT: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 3, true); + return format; + } + case VERTEX_FORMAT_SSHORT4_INT: + { + static const VertexFormat format(GL_SHORT, GL_FALSE, 4, true); + return format; + } + case VERTEX_FORMAT_USHORT1_INT: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 1, true); + return format; + } + case VERTEX_FORMAT_USHORT2_INT: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 2, true); + return format; + } + case VERTEX_FORMAT_USHORT3_INT: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 3, true); + return format; + } + case VERTEX_FORMAT_USHORT4_INT: + { + static const VertexFormat format(GL_UNSIGNED_SHORT, GL_FALSE, 4, true); + return format; + } + case VERTEX_FORMAT_SINT1_INT: + { + static const VertexFormat format(GL_INT, GL_FALSE, 1, true); + return format; + } + case VERTEX_FORMAT_SINT2_INT: + { + static const VertexFormat format(GL_INT, GL_FALSE, 2, true); + return format; + } + case VERTEX_FORMAT_SINT3_INT: + { + static const VertexFormat format(GL_INT, GL_FALSE, 3, true); + return format; + } + case VERTEX_FORMAT_SINT4_INT: + { + static const VertexFormat format(GL_INT, GL_FALSE, 4, true); + return format; + } + case VERTEX_FORMAT_UINT1_INT: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 1, true); + return format; + } + case VERTEX_FORMAT_UINT2_INT: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 2, true); + return format; + } + case VERTEX_FORMAT_UINT3_INT: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 3, true); + return format; + } + case VERTEX_FORMAT_UINT4_INT: + { + static const VertexFormat format(GL_UNSIGNED_INT, GL_FALSE, 4, true); + return format; + } + case VERTEX_FORMAT_FIXED1: + { + static const VertexFormat format(GL_FIXED, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_FIXED2: + { + static const VertexFormat format(GL_FIXED, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_FIXED3: + { + static const VertexFormat format(GL_FIXED, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_FIXED4: + { + static const VertexFormat format(GL_FIXED, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_HALF1: + { + static const VertexFormat format(GL_HALF_FLOAT, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_HALF2: + { + static const VertexFormat format(GL_HALF_FLOAT, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_HALF3: + { + static const VertexFormat format(GL_HALF_FLOAT, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_HALF4: + { + static const VertexFormat format(GL_HALF_FLOAT, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_FLOAT1: + { + static const VertexFormat format(GL_FLOAT, GL_FALSE, 1, false); + return format; + } + case VERTEX_FORMAT_FLOAT2: + { + static const VertexFormat format(GL_FLOAT, GL_FALSE, 2, false); + return format; + } + case VERTEX_FORMAT_FLOAT3: + { + static const VertexFormat format(GL_FLOAT, GL_FALSE, 3, false); + return format; + } + case VERTEX_FORMAT_FLOAT4: + { + static const VertexFormat format(GL_FLOAT, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_SINT210: + { + static const VertexFormat format(GL_INT_2_10_10_10_REV, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_UINT210: + { + static const VertexFormat format(GL_UNSIGNED_INT_2_10_10_10_REV, GL_FALSE, 4, false); + return format; + } + case VERTEX_FORMAT_SINT210_NORM: + { + static const VertexFormat format(GL_INT_2_10_10_10_REV, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_UINT210_NORM: + { + static const VertexFormat format(GL_UNSIGNED_INT_2_10_10_10_REV, GL_TRUE, 4, false); + return format; + } + case VERTEX_FORMAT_SINT210_INT: + { + static const VertexFormat format(GL_INT_2_10_10_10_REV, GL_FALSE, 4, true); + return format; + } + case VERTEX_FORMAT_UINT210_INT: + { + static const VertexFormat format(GL_UNSIGNED_INT_2_10_10_10_REV, GL_FALSE, 4, true); + return format; + } + default: + { + static const VertexFormat format(GL_NONE, GL_FALSE, 0, false); + return format; + } + } +} + +VertexFormat::VertexFormat(GLenum typeIn, GLboolean normalizedIn, GLuint componentsIn, bool pureIntegerIn) + : type(typeIn), + normalized(normalizedIn), + components(componentsIn), + pureInteger(pureIntegerIn) +{ + // float -> !normalized + ASSERT(!(type == GL_FLOAT || type == GL_HALF_FLOAT || type == GL_FIXED) || normalized == GL_FALSE); +} + +} |