| // |
| // 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 "libGLESv2/formatutils.h" |
| #include "libGLESv2/Context.h" |
| #include "libGLESv2/Framebuffer.h" |
| #include "libGLESv2/renderer/Renderer.h" |
| #include "libGLESv2/renderer/imageformats.h" |
| #include "libGLESv2/renderer/copyimage.h" |
| |
| 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. |
| |
| FormatType::FormatType() |
| : internalFormat(GL_NONE), |
| colorWriteFunction(NULL) |
| { |
| } |
| |
| typedef std::pair<GLenum, GLenum> FormatTypePair; |
| typedef std::pair<FormatTypePair, FormatType> FormatPair; |
| typedef std::map<FormatTypePair, FormatType> FormatMap; |
| |
| // A helper function to insert data into the format map with fewer characters. |
| static inline void InsertFormatMapping(FormatMap *map, GLenum format, GLenum type, GLenum internalFormat, ColorWriteFunction writeFunc) |
| { |
| FormatType info; |
| info.internalFormat = internalFormat; |
| info.colorWriteFunction = writeFunc; |
| map->insert(FormatPair(FormatTypePair(format, type), info)); |
| } |
| |
| FormatMap BuildFormatMap() |
| { |
| FormatMap map; |
| |
| using namespace rx; |
| |
| // | Format | Type | Internal format | Color write function | |
| InsertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_BYTE, GL_RGBA8, WriteColor<R8G8B8A8, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGBA, GL_BYTE, GL_RGBA8_SNORM, WriteColor<R8G8B8A8S, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, GL_RGBA4, WriteColor<R4G4B4A4, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, GL_RGB5_A1, WriteColor<R5G5B5A1, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, GL_RGB10_A2, WriteColor<R10G10B10A2, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGBA, GL_FLOAT, GL_RGBA32F, WriteColor<R32G32B32A32F, GLfloat>); |
| InsertFormatMapping(&map, GL_RGBA, GL_HALF_FLOAT, GL_RGBA16F, WriteColor<R16G16B16A16F, GLfloat>); |
| InsertFormatMapping(&map, GL_RGBA, GL_HALF_FLOAT_OES, GL_RGBA16F, WriteColor<R16G16B16A16F, GLfloat>); |
| |
| InsertFormatMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, GL_RGBA8UI, WriteColor<R8G8B8A8, GLuint> ); |
| InsertFormatMapping(&map, GL_RGBA_INTEGER, GL_BYTE, GL_RGBA8I, WriteColor<R8G8B8A8S, GLint> ); |
| InsertFormatMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, GL_RGBA16UI, WriteColor<R16G16B16A16, GLuint> ); |
| InsertFormatMapping(&map, GL_RGBA_INTEGER, GL_SHORT, GL_RGBA16I, WriteColor<R16G16B16A16S, GLint> ); |
| InsertFormatMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_INT, GL_RGBA32UI, WriteColor<R32G32B32A32, GLuint> ); |
| InsertFormatMapping(&map, GL_RGBA_INTEGER, GL_INT, GL_RGBA32I, WriteColor<R32G32B32A32S, GLint> ); |
| InsertFormatMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV, GL_RGB10_A2UI, WriteColor<R10G10B10A2, GLuint> ); |
| |
| InsertFormatMapping(&map, GL_RGB, GL_UNSIGNED_BYTE, GL_RGB8, WriteColor<R8G8B8, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGB, GL_BYTE, GL_RGB8_SNORM, WriteColor<R8G8B8S, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_RGB565, WriteColor<R5G6B5, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, GL_R11F_G11F_B10F, WriteColor<R11G11B10F, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, GL_RGB9_E5, WriteColor<R9G9B9E5, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGB, GL_FLOAT, GL_RGB32F, WriteColor<R32G32B32F, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGB, GL_HALF_FLOAT, GL_RGB16F, WriteColor<R16G16B16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_RGB, GL_HALF_FLOAT_OES, GL_RGB16F, WriteColor<R16G16B16F, GLfloat> ); |
| |
| InsertFormatMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_BYTE, GL_RGB8UI, WriteColor<R8G8B8, GLuint> ); |
| InsertFormatMapping(&map, GL_RGB_INTEGER, GL_BYTE, GL_RGB8I, WriteColor<R8G8B8S, GLint> ); |
| InsertFormatMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_SHORT, GL_RGB16UI, WriteColor<R16G16B16, GLuint> ); |
| InsertFormatMapping(&map, GL_RGB_INTEGER, GL_SHORT, GL_RGB16I, WriteColor<R16G16B16S, GLint> ); |
| InsertFormatMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_INT, GL_RGB32UI, WriteColor<R32G32B32, GLuint> ); |
| InsertFormatMapping(&map, GL_RGB_INTEGER, GL_INT, GL_RGB32I, WriteColor<R32G32B32S, GLint> ); |
| |
| InsertFormatMapping(&map, GL_RG, GL_UNSIGNED_BYTE, GL_RG8, WriteColor<R8G8, GLfloat> ); |
| InsertFormatMapping(&map, GL_RG, GL_BYTE, GL_RG8_SNORM, WriteColor<R8G8S, GLfloat> ); |
| InsertFormatMapping(&map, GL_RG, GL_FLOAT, GL_RG32F, WriteColor<R32G32F, GLfloat> ); |
| InsertFormatMapping(&map, GL_RG, GL_HALF_FLOAT, GL_RG16F, WriteColor<R16G16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_RG, GL_HALF_FLOAT_OES, GL_RG16F, WriteColor<R16G16F, GLfloat> ); |
| |
| InsertFormatMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_BYTE, GL_RG8UI, WriteColor<R8G8, GLuint> ); |
| InsertFormatMapping(&map, GL_RG_INTEGER, GL_BYTE, GL_RG8I, WriteColor<R8G8S, GLint> ); |
| InsertFormatMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_SHORT, GL_RG16UI, WriteColor<R16G16, GLuint> ); |
| InsertFormatMapping(&map, GL_RG_INTEGER, GL_SHORT, GL_RG16I, WriteColor<R16G16S, GLint> ); |
| InsertFormatMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_INT, GL_RG32UI, WriteColor<R32G32, GLuint> ); |
| InsertFormatMapping(&map, GL_RG_INTEGER, GL_INT, GL_RG32I, WriteColor<R32G32S, GLint> ); |
| |
| InsertFormatMapping(&map, GL_RED, GL_UNSIGNED_BYTE, GL_R8, WriteColor<R8, GLfloat> ); |
| InsertFormatMapping(&map, GL_RED, GL_BYTE, GL_R8_SNORM, WriteColor<R8S, GLfloat> ); |
| InsertFormatMapping(&map, GL_RED, GL_FLOAT, GL_R32F, WriteColor<R32F, GLfloat> ); |
| InsertFormatMapping(&map, GL_RED, GL_HALF_FLOAT, GL_R16F, WriteColor<R16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_RED, GL_HALF_FLOAT_OES, GL_R16F, WriteColor<R16F, GLfloat> ); |
| |
| InsertFormatMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_BYTE, GL_R8UI, WriteColor<R8, GLuint> ); |
| InsertFormatMapping(&map, GL_RED_INTEGER, GL_BYTE, GL_R8I, WriteColor<R8S, GLint> ); |
| InsertFormatMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_SHORT, GL_R16UI, WriteColor<R16, GLuint> ); |
| InsertFormatMapping(&map, GL_RED_INTEGER, GL_SHORT, GL_R16I, WriteColor<R16S, GLint> ); |
| InsertFormatMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_INT, GL_R32UI, WriteColor<R32, GLuint> ); |
| InsertFormatMapping(&map, GL_RED_INTEGER, GL_INT, GL_R32I, WriteColor<R32S, GLint> ); |
| |
| InsertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, GL_LUMINANCE8_ALPHA8_EXT, WriteColor<L8A8, GLfloat> ); |
| InsertFormatMapping(&map, GL_LUMINANCE, GL_UNSIGNED_BYTE, GL_LUMINANCE8_EXT, WriteColor<L8, GLfloat> ); |
| InsertFormatMapping(&map, GL_ALPHA, GL_UNSIGNED_BYTE, GL_ALPHA8_EXT, WriteColor<A8, GLfloat> ); |
| InsertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_FLOAT, GL_LUMINANCE_ALPHA32F_EXT, WriteColor<L32A32F, GLfloat> ); |
| InsertFormatMapping(&map, GL_LUMINANCE, GL_FLOAT, GL_LUMINANCE32F_EXT, WriteColor<L32F, GLfloat> ); |
| InsertFormatMapping(&map, GL_ALPHA, GL_FLOAT, GL_ALPHA32F_EXT, WriteColor<A32F, GLfloat> ); |
| InsertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT, GL_LUMINANCE_ALPHA16F_EXT, WriteColor<L16A16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES, GL_LUMINANCE_ALPHA16F_EXT, WriteColor<L16A16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT, GL_LUMINANCE16F_EXT, WriteColor<L16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT_OES, GL_LUMINANCE16F_EXT, WriteColor<L16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_ALPHA, GL_HALF_FLOAT, GL_ALPHA16F_EXT, WriteColor<A16F, GLfloat> ); |
| InsertFormatMapping(&map, GL_ALPHA, GL_HALF_FLOAT_OES, GL_ALPHA16F_EXT, WriteColor<A16F, GLfloat> ); |
| |
| InsertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_BYTE, GL_BGRA8_EXT, WriteColor<B8G8R8A8, GLfloat> ); |
| InsertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, GL_BGRA4_ANGLEX, WriteColor<B4G4R4A4, GLfloat> ); |
| InsertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, GL_BGR5_A1_ANGLEX, WriteColor<B5G5R5A1, GLfloat> ); |
| |
| InsertFormatMapping(&map, GL_SRGB_EXT, GL_UNSIGNED_BYTE, GL_SRGB8, WriteColor<R8G8B8, GLfloat> ); |
| InsertFormatMapping(&map, GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE, GL_SRGB8_ALPHA8, WriteColor<R8G8B8A8, GLfloat> ); |
| |
| InsertFormatMapping(&map, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, NULL ); |
| InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, NULL ); |
| InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, NULL ); |
| InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, NULL ); |
| |
| InsertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, GL_DEPTH_COMPONENT16, NULL ); |
| InsertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, GL_DEPTH_COMPONENT32_OES, NULL ); |
| InsertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_FLOAT, GL_DEPTH_COMPONENT32F, NULL ); |
| |
| InsertFormatMapping(&map, GL_STENCIL, GL_UNSIGNED_BYTE, GL_STENCIL_INDEX8, NULL ); |
| |
| InsertFormatMapping(&map, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, GL_DEPTH24_STENCIL8, NULL ); |
| InsertFormatMapping(&map, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, GL_DEPTH32F_STENCIL8, NULL ); |
| |
| return map; |
| } |
| |
| Type::Type() |
| : bytes(0), |
| specialInterpretation(false) |
| { |
| } |
| |
| // Map of sizes of input types |
| typedef std::pair<GLenum, Type> TypeInfoPair; |
| typedef std::map<GLenum, Type> TypeInfoMap; |
| |
| static inline void InsertTypeInfo(TypeInfoMap *map, GLenum type, GLuint bytes, bool specialInterpretation) |
| { |
| Type info; |
| info.bytes = bytes; |
| info.specialInterpretation = specialInterpretation; |
| |
| map->insert(std::make_pair(type, info)); |
| } |
| |
| bool operator<(const Type& a, const Type& b) |
| { |
| return memcmp(&a, &b, sizeof(Type)) < 0; |
| } |
| |
| static TypeInfoMap BuildTypeInfoMap() |
| { |
| TypeInfoMap map; |
| |
| InsertTypeInfo(&map, GL_UNSIGNED_BYTE, 1, false); |
| InsertTypeInfo(&map, GL_BYTE, 1, false); |
| InsertTypeInfo(&map, GL_UNSIGNED_SHORT, 2, false); |
| InsertTypeInfo(&map, GL_SHORT, 2, false); |
| InsertTypeInfo(&map, GL_UNSIGNED_INT, 4, false); |
| InsertTypeInfo(&map, GL_INT, 4, false); |
| InsertTypeInfo(&map, GL_HALF_FLOAT, 2, false); |
| InsertTypeInfo(&map, GL_HALF_FLOAT_OES, 2, false); |
| InsertTypeInfo(&map, GL_FLOAT, 4, false); |
| InsertTypeInfo(&map, GL_UNSIGNED_SHORT_5_6_5, 2, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_SHORT_4_4_4_4, 2, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_SHORT_5_5_5_1, 2, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, 2, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, 2, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_INT_2_10_10_10_REV, 4, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_INT_24_8, 4, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_INT_10F_11F_11F_REV, 4, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_INT_5_9_9_9_REV, 4, true ); |
| InsertTypeInfo(&map, GL_UNSIGNED_INT_24_8_OES, 4, true ); |
| InsertTypeInfo(&map, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, 8, true ); |
| |
| return map; |
| } |
| |
| // Information about internal formats |
| static bool AlwaysSupported(GLuint, const Extensions &) |
| { |
| return true; |
| } |
| |
| static bool UnimplementedSupport(GLuint, const Extensions &) |
| { |
| return false; |
| } |
| |
| static bool NeverSupported(GLuint, const Extensions &) |
| { |
| return false; |
| } |
| |
| template <GLuint minCoreGLVersion> |
| static bool RequireESVersion(GLuint clientVersion, const Extensions &) |
| { |
| return clientVersion >= minCoreGLVersion; |
| } |
| |
| // Pointer to a boolean memeber of the Extensions struct |
| typedef bool(Extensions::*ExtensionBool); |
| |
| // Check support for a single extension |
| template <ExtensionBool bool1> |
| static bool RequireExtension(GLuint, const Extensions & extensions) |
| { |
| return extensions.*bool1; |
| } |
| |
| // Check for a minimum client version or a single extension |
| template <GLuint minCoreGLVersion, ExtensionBool bool1> |
| static bool RequireESVersionOrExtension(GLuint clientVersion, const Extensions &extensions) |
| { |
| return clientVersion >= minCoreGLVersion || extensions.*bool1; |
| } |
| |
| // Check for a minimum client version or two extensions |
| template <GLuint minCoreGLVersion, ExtensionBool bool1, ExtensionBool bool2> |
| static bool RequireESVersionOrExtensions(GLuint clientVersion, const Extensions &extensions) |
| { |
| return clientVersion >= minCoreGLVersion || (extensions.*bool1 || extensions.*bool2); |
| } |
| |
| // Check support for two extensions |
| template <ExtensionBool bool1, ExtensionBool bool2> |
| static bool RequireExtensions(GLuint, const Extensions &extensions) |
| { |
| return extensions.*bool1 || extensions.*bool2; |
| } |
| |
| InternalFormat::InternalFormat() |
| : redBits(0), |
| greenBits(0), |
| blueBits(0), |
| luminanceBits(0), |
| alphaBits(0), |
| sharedBits(0), |
| depthBits(0), |
| stencilBits(0), |
| pixelBytes(0), |
| componentCount(0), |
| compressedBlockWidth(0), |
| compressedBlockHeight(0), |
| format(GL_NONE), |
| type(GL_NONE), |
| componentType(GL_NONE), |
| colorEncoding(GL_NONE), |
| compressed(false), |
| textureSupport(NeverSupported), |
| renderSupport(NeverSupported), |
| filterSupport(NeverSupported) |
| { |
| } |
| |
| static InternalFormat UnsizedFormat(GLenum format, InternalFormat::SupportCheckFunction textureSupport, |
| InternalFormat::SupportCheckFunction renderSupport, |
| InternalFormat::SupportCheckFunction filterSupport) |
| { |
| InternalFormat formatInfo; |
| formatInfo.format = format; |
| formatInfo.textureSupport = textureSupport; |
| formatInfo.renderSupport = renderSupport; |
| formatInfo.filterSupport = filterSupport; |
| return formatInfo; |
| } |
| |
| static InternalFormat RGBAFormat(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.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; |
| return 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.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; |
| } |
| |
| static InternalFormat DepthStencilFormat(GLuint depthBits, GLuint stencilBits, GLuint unusedBits, GLenum format, |
| GLenum type, GLenum componentType, InternalFormat::SupportCheckFunction textureSupport, |
| InternalFormat::SupportCheckFunction renderSupport, |
| InternalFormat::SupportCheckFunction filterSupport) |
| { |
| InternalFormat formatInfo; |
| 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; |
| return 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.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; |
| } |
| |
| typedef std::pair<GLenum, InternalFormat> InternalFormatInfoPair; |
| typedef std::map<GLenum, InternalFormat> InternalFormatInfoMap; |
| |
| static InternalFormatInfoMap BuildInternalFormatInfoMap() |
| { |
| InternalFormatInfoMap map; |
| |
| // From ES 3.0.1 spec, table 3.12 |
| map.insert(InternalFormatInfoPair(GL_NONE, InternalFormat())); |
| |
| // | Internal format | | R | G | B | A |S | Format | Type | Component type | SRGB | Texture supported | Renderable | Filterable | |
| map.insert(InternalFormatInfoPair(GL_R8, RGBAFormat( 8, 0, 0, 0, 0, GL_RED, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESVersionOrExtension<3, &Extensions::textureRG>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_R8_SNORM, RGBAFormat( 8, 0, 0, 0, 0, GL_RED, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireESVersion<3>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG8, RGBAFormat( 8, 8, 0, 0, 0, GL_RG, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESVersionOrExtension<3, &Extensions::textureRG>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG8_SNORM, RGBAFormat( 8, 8, 0, 0, 0, GL_RG, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireESVersion<3>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB8, RGBAFormat( 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESVersionOrExtension<3, &Extensions::rgb8rgba8>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB8_SNORM, RGBAFormat( 8, 8, 8, 0, 0, GL_RGB, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireESVersion<3>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB565, RGBAFormat( 5, 6, 5, 0, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_NORMALIZED, false, RequireESVersion<2>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA4, RGBAFormat( 4, 4, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_NORMALIZED, false, RequireESVersion<2>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB5_A1, RGBAFormat( 5, 5, 5, 1, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_NORMALIZED, false, RequireESVersion<2>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA8, RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireESVersionOrExtension<3, &Extensions::rgb8rgba8>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA8_SNORM, RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA, GL_BYTE, GL_SIGNED_NORMALIZED, false, RequireESVersion<3>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB10_A2, RGBAFormat(10, 10, 10, 2, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, GL_UNSIGNED_NORMALIZED, false, RequireESVersion<3>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB10_A2UI, RGBAFormat(10, 10, 10, 2, 0, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV, GL_UNSIGNED_INT, false, RequireESVersion<3>, NeverSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_SRGB8, RGBAFormat( 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, true, RequireESVersionOrExtension<3, &Extensions::sRGB>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_SRGB8_ALPHA8, RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, true, RequireESVersionOrExtension<3, &Extensions::sRGB>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_R11F_G11F_B10F, RGBAFormat(11, 11, 10, 0, 0, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, GL_FLOAT, false, RequireESVersion<3>, RequireExtension<&Extensions::colorBufferFloat>, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB9_E5, RGBAFormat( 9, 9, 9, 0, 5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, GL_FLOAT, false, RequireESVersion<3>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_R8I, RGBAFormat( 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_BYTE, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_R8UI, RGBAFormat( 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_R16I, RGBAFormat(16, 0, 0, 0, 0, GL_RED_INTEGER, GL_SHORT, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_R16UI, RGBAFormat(16, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_R32I, RGBAFormat(32, 0, 0, 0, 0, GL_RED_INTEGER, GL_INT, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_R32UI, RGBAFormat(32, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG8I, RGBAFormat( 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_BYTE, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG8UI, RGBAFormat( 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG16I, RGBAFormat(16, 16, 0, 0, 0, GL_RG_INTEGER, GL_SHORT, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG16UI, RGBAFormat(16, 16, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG32I, RGBAFormat(32, 32, 0, 0, 0, GL_RG_INTEGER, GL_INT, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG32UI, RGBAFormat(32, 32, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB8I, RGBAFormat( 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_BYTE, GL_INT, false, RequireESVersion<3>, NeverSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB8UI, RGBAFormat( 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireESVersion<3>, NeverSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB16I, RGBAFormat(16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_SHORT, GL_INT, false, RequireESVersion<3>, NeverSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB16UI, RGBAFormat(16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireESVersion<3>, NeverSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB32I, RGBAFormat(32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_INT, GL_INT, false, RequireESVersion<3>, NeverSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB32UI, RGBAFormat(32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireESVersion<3>, NeverSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA8I, RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_BYTE, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA8UI, RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA16I, RGBAFormat(16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_SHORT, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA16UI, RGBAFormat(16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA32I, RGBAFormat(32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_INT, GL_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA32UI, RGBAFormat(32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_UNSIGNED_INT, GL_UNSIGNED_INT, false, RequireESVersion<3>, AlwaysSupported, NeverSupported))); |
| |
| map.insert(InternalFormatInfoPair(GL_BGRA8_EXT, RGBAFormat( 8, 8, 8, 8, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, false, RequireExtension<&Extensions::textureFormatBGRA8888>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_BGRA4_ANGLEX, RGBAFormat( 4, 4, 4, 4, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, GL_UNSIGNED_NORMALIZED, false, RequireExtension<&Extensions::textureFormatBGRA8888>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_BGR5_A1_ANGLEX, RGBAFormat( 5, 5, 5, 1, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, GL_UNSIGNED_NORMALIZED, false, RequireExtension<&Extensions::textureFormatBGRA8888>, AlwaysSupported, AlwaysSupported))); |
| |
| // 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 | | | | | |
| map.insert(InternalFormatInfoPair(GL_R16F, RGBAFormat(16, 0, 0, 0, 0, GL_RED, GL_HALF_FLOAT, GL_FLOAT, false, RequireESVersionOrExtensions<3, &Extensions::textureHalfFloat, &Extensions::textureRG>, AlwaysSupported, RequireExtension<&Extensions::textureHalfFloatLinear>))); |
| map.insert(InternalFormatInfoPair(GL_RG16F, RGBAFormat(16, 16, 0, 0, 0, GL_RG, GL_HALF_FLOAT, GL_FLOAT, false, RequireESVersionOrExtensions<3, &Extensions::textureHalfFloat, &Extensions::textureRG>, AlwaysSupported, RequireExtension<&Extensions::textureHalfFloatLinear>))); |
| map.insert(InternalFormatInfoPair(GL_RGB16F, RGBAFormat(16, 16, 16, 0, 0, GL_RGB, GL_HALF_FLOAT, GL_FLOAT, false, RequireESVersionOrExtension<3, &Extensions::textureHalfFloat>, AlwaysSupported, RequireExtension<&Extensions::textureHalfFloatLinear>))); |
| map.insert(InternalFormatInfoPair(GL_RGBA16F, RGBAFormat(16, 16, 16, 16, 0, GL_RGBA, GL_HALF_FLOAT, GL_FLOAT, false, RequireESVersionOrExtension<3, &Extensions::textureHalfFloat>, AlwaysSupported, RequireExtension<&Extensions::textureHalfFloatLinear>))); |
| map.insert(InternalFormatInfoPair(GL_R32F, RGBAFormat(32, 0, 0, 0, 0, GL_RED, GL_FLOAT, GL_FLOAT, false, RequireESVersionOrExtensions<3, &Extensions::textureFloat, &Extensions::textureRG>, AlwaysSupported, RequireExtension<&Extensions::textureFloatLinear> ))); |
| map.insert(InternalFormatInfoPair(GL_RG32F, RGBAFormat(32, 32, 0, 0, 0, GL_RG, GL_FLOAT, GL_FLOAT, false, RequireESVersionOrExtensions<3, &Extensions::textureFloat, &Extensions::textureRG>, AlwaysSupported, RequireExtension<&Extensions::textureFloatLinear> ))); |
| map.insert(InternalFormatInfoPair(GL_RGB32F, RGBAFormat(32, 32, 32, 0, 0, GL_RGB, GL_FLOAT, GL_FLOAT, false, RequireESVersionOrExtension<3, &Extensions::textureFloat>, AlwaysSupported, RequireExtension<&Extensions::textureFloatLinear> ))); |
| map.insert(InternalFormatInfoPair(GL_RGBA32F, RGBAFormat(32, 32, 32, 32, 0, GL_RGBA, GL_FLOAT, GL_FLOAT, false, RequireESVersionOrExtension<3, &Extensions::textureFloat>, AlwaysSupported, RequireExtension<&Extensions::textureFloatLinear> ))); |
| |
| // Depth stencil formats |
| // | Internal format | | D |S | X | Format | Type | Component type | Supported | |
| map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT16, DepthStencilFormat(16, 0, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, GL_UNSIGNED_NORMALIZED, RequireESVersion<2>, AlwaysSupported, RequireESVersionOrExtension<3, &Extensions::depthTextures>))); |
| map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT24, DepthStencilFormat(24, 0, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, GL_UNSIGNED_NORMALIZED, RequireESVersion<3>, AlwaysSupported, RequireESVersionOrExtension<3, &Extensions::depthTextures>))); |
| map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT32F, DepthStencilFormat(32, 0, 0, GL_DEPTH_COMPONENT, GL_FLOAT, GL_FLOAT, RequireESVersion<3>, AlwaysSupported, RequireESVersionOrExtension<3, &Extensions::depthTextures>))); |
| map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT32_OES, DepthStencilFormat(32, 0, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, GL_UNSIGNED_NORMALIZED, RequireExtension<&Extensions::depthTextures>, AlwaysSupported, AlwaysSupported ))); |
| map.insert(InternalFormatInfoPair(GL_DEPTH24_STENCIL8, DepthStencilFormat(24, 8, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, GL_UNSIGNED_NORMALIZED, RequireESVersionOrExtension<2, &Extensions::depthTextures>, AlwaysSupported, AlwaysSupported ))); |
| map.insert(InternalFormatInfoPair(GL_DEPTH32F_STENCIL8, DepthStencilFormat(32, 8, 24, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, GL_FLOAT, RequireESVersion<3>, AlwaysSupported, AlwaysSupported ))); |
| map.insert(InternalFormatInfoPair(GL_STENCIL_INDEX8, DepthStencilFormat( 0, 8, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_BYTE, GL_UNSIGNED_INT, RequireESVersion<2>, AlwaysSupported, NeverSupported ))); |
| |
| // 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, RequireExtension<&Extensions::textureStorage>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_LUMINANCE8_EXT, LUMAFormat( 8, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, GL_UNSIGNED_NORMALIZED, RequireExtension<&Extensions::textureStorage>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_ALPHA32F_EXT, LUMAFormat( 0, 32, GL_ALPHA, GL_FLOAT, GL_FLOAT, RequireExtensions<&Extensions::textureStorage, &Extensions::textureFloat>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_LUMINANCE32F_EXT, LUMAFormat(32, 0, GL_LUMINANCE, GL_FLOAT, GL_FLOAT, RequireExtensions<&Extensions::textureStorage, &Extensions::textureFloat>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_ALPHA16F_EXT, LUMAFormat( 0, 16, GL_ALPHA, GL_HALF_FLOAT, GL_FLOAT, RequireExtensions<&Extensions::textureStorage, &Extensions::textureHalfFloat>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_LUMINANCE16F_EXT, LUMAFormat(16, 0, GL_LUMINANCE, GL_HALF_FLOAT, GL_FLOAT, RequireExtensions<&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, RequireExtension<&Extensions::textureStorage>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA32F_EXT, LUMAFormat(32, 32, GL_LUMINANCE_ALPHA, GL_FLOAT, GL_FLOAT, RequireExtensions<&Extensions::textureStorage, &Extensions::textureFloat>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA16F_EXT, LUMAFormat(16, 16, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT, GL_FLOAT, RequireExtensions<&Extensions::textureStorage, &Extensions::textureHalfFloat>, NeverSupported, AlwaysSupported))); |
| |
| // Unsized formats |
| // | Internal format | | Format | Supported | Renderable | Filterable | |
| map.insert(InternalFormatInfoPair(GL_ALPHA, UnsizedFormat(GL_ALPHA, RequireESVersion<2>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_LUMINANCE, UnsizedFormat(GL_LUMINANCE, RequireESVersion<2>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA, UnsizedFormat(GL_LUMINANCE_ALPHA, RequireESVersion<2>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RED, UnsizedFormat(GL_RED, RequireESVersionOrExtension<3, &Extensions::textureRG>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RG, UnsizedFormat(GL_RG, RequireESVersionOrExtension<3, &Extensions::textureRG>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGB, UnsizedFormat(GL_RGB, RequireESVersion<2>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RGBA, UnsizedFormat(GL_RGBA, RequireESVersion<2>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_RED_INTEGER, UnsizedFormat(GL_RED_INTEGER, RequireESVersion<3>, NeverSupported, NeverSupported ))); |
| map.insert(InternalFormatInfoPair(GL_RG_INTEGER, UnsizedFormat(GL_RG_INTEGER, RequireESVersion<3>, NeverSupported, NeverSupported ))); |
| map.insert(InternalFormatInfoPair(GL_RGB_INTEGER, UnsizedFormat(GL_RGB_INTEGER, RequireESVersion<3>, NeverSupported, NeverSupported ))); |
| map.insert(InternalFormatInfoPair(GL_RGBA_INTEGER, UnsizedFormat(GL_RGBA_INTEGER, RequireESVersion<3>, NeverSupported, NeverSupported ))); |
| map.insert(InternalFormatInfoPair(GL_BGRA_EXT, UnsizedFormat(GL_BGRA_EXT, RequireExtension<&Extensions::textureFormatBGRA8888>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT, UnsizedFormat(GL_DEPTH_COMPONENT, RequireESVersion<2>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_DEPTH_STENCIL, UnsizedFormat(GL_DEPTH_STENCIL, RequireESVersionOrExtension<3, &Extensions::packedDepthStencil>, AlwaysSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_SRGB_EXT, UnsizedFormat(GL_RGB, RequireESVersionOrExtension<3, &Extensions::sRGB>, NeverSupported, AlwaysSupported))); |
| map.insert(InternalFormatInfoPair(GL_SRGB_ALPHA_EXT, UnsizedFormat(GL_RGBA, RequireESVersionOrExtension<3, &Extensions::sRGB>, AlwaysSupported, 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, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_SIGNED_R11_EAC, CompressedFormat(4, 4, 64, 1, GL_COMPRESSED_SIGNED_R11_EAC, GL_UNSIGNED_BYTE, false, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_RG11_EAC, CompressedFormat(4, 4, 128, 2, GL_COMPRESSED_RG11_EAC, GL_UNSIGNED_BYTE, false, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_SIGNED_RG11_EAC, CompressedFormat(4, 4, 128, 2, GL_COMPRESSED_SIGNED_RG11_EAC, GL_UNSIGNED_BYTE, false, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB8_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB8_ETC2, GL_UNSIGNED_BYTE, false, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_SRGB8_ETC2, GL_UNSIGNED_BYTE, true, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE, false, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE, true, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA8_ETC2_EAC, CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA8_ETC2_EAC, GL_UNSIGNED_BYTE, false, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, GL_UNSIGNED_BYTE, true, UnimplementedSupport, UnimplementedSupport, UnimplementedSupport))); |
| |
| // 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, RequireExtension<&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, RequireExtension<&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, RequireExtension<&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, RequireExtension<&Extensions::textureCompressionDXT5>, NeverSupported, AlwaysSupported ))); |
| |
| return map; |
| } |
| |
| static const InternalFormatInfoMap &GetInternalFormatMap() |
| { |
| static const InternalFormatInfoMap formatMap = BuildInternalFormatInfoMap(); |
| return formatMap; |
| } |
| |
| static FormatSet BuildAllSizedInternalFormatSet() |
| { |
| FormatSet result; |
| |
| const InternalFormatInfoMap &formats = GetInternalFormatMap(); |
| for (InternalFormatInfoMap::const_iterator i = formats.begin(); i != formats.end(); i++) |
| { |
| if (i->second.pixelBytes > 0) |
| { |
| result.insert(i->first); |
| } |
| } |
| |
| return result; |
| } |
| |
| const FormatType &GetFormatTypeInfo(GLenum format, GLenum type) |
| { |
| static const FormatMap formatMap = BuildFormatMap(); |
| FormatMap::const_iterator iter = formatMap.find(FormatTypePair(format, type)); |
| if (iter != formatMap.end()) |
| { |
| return iter->second; |
| } |
| else |
| { |
| static const FormatType defaultInfo; |
| return defaultInfo; |
| } |
| } |
| |
| const Type &GetTypeInfo(GLenum type) |
| { |
| static const TypeInfoMap infoMap = BuildTypeInfoMap(); |
| TypeInfoMap::const_iterator iter = infoMap.find(type); |
| if (iter != infoMap.end()) |
| { |
| return iter->second; |
| } |
| else |
| { |
| static const Type defaultInfo; |
| return defaultInfo; |
| } |
| } |
| |
| const InternalFormat &GetInternalFormatInfo(GLenum internalFormat) |
| { |
| const InternalFormatInfoMap &formatMap = GetInternalFormatMap(); |
| InternalFormatInfoMap::const_iterator iter = formatMap.find(internalFormat); |
| if (iter != formatMap.end()) |
| { |
| return iter->second; |
| } |
| else |
| { |
| static const InternalFormat defaultInternalFormat; |
| return defaultInternalFormat; |
| } |
| } |
| |
| GLuint InternalFormat::computeRowPitch(GLenum type, GLsizei width, GLint alignment) const |
| { |
| ASSERT(alignment > 0 && isPow2(alignment)); |
| return rx::roundUp(computeBlockSize(type, width, 1), static_cast<GLuint>(alignment)); |
| } |
| |
| GLuint InternalFormat::computeDepthPitch(GLenum type, GLsizei width, GLsizei height, GLint alignment) const |
| { |
| return computeRowPitch(type, width, alignment) * height; |
| } |
| |
| GLuint InternalFormat::computeBlockSize(GLenum type, GLsizei width, GLsizei height) const |
| { |
| if (compressed) |
| { |
| GLsizei numBlocksWide = (width + compressedBlockWidth - 1) / compressedBlockWidth; |
| GLsizei numBlocksHight = (height + compressedBlockHeight - 1) / compressedBlockHeight; |
| return (pixelBytes * numBlocksWide * numBlocksHight); |
| } |
| else |
| { |
| const Type &typeInfo = GetTypeInfo(type); |
| if (typeInfo.specialInterpretation) |
| { |
| return typeInfo.bytes * width * height; |
| } |
| else |
| { |
| return componentCount * typeInfo.bytes * width * height; |
| } |
| } |
| } |
| |
| GLenum GetSizedInternalFormat(GLenum internalFormat, GLenum type) |
| { |
| const InternalFormat& formatInfo = GetInternalFormatInfo(internalFormat); |
| return (formatInfo.pixelBytes > 0) ? internalFormat : GetFormatTypeInfo(internalFormat, type).internalFormat; |
| } |
| |
| const FormatSet &GetAllSizedInternalFormats() |
| { |
| static FormatSet formatSet = BuildAllSizedInternalFormatSet(); |
| return formatSet; |
| } |
| |
| } |