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kc3-lang/angle/src/libANGLE/renderer/gl/formatutilsgl.cpp
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Author :
Geoff Lang
Date : 2015-05-27 16:12:30
Hash : fd216c41
Message : Support BGRA texture by remapping the internal format to RGBA. The format is still passed as BGRA to the driver so that the data can be properly unpacked. BUG=angleproject:884 Change-Id: I767626c818ce1a3c5a4739f07aa623bf8a9ae377 Reviewed-on: https://chromium-review.googlesource.com/273162 Reviewed-by: Brandon Jones <bajones@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>
- src/libANGLE/renderer/gl/formatutilsgl.cpp
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// // Copyright (c) 2015 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. // // formatutilsgl.cpp: Queries for GL image formats and their translations to native // GL formats. #include "libANGLE/renderer/gl/formatutilsgl.h" #include <limits> #include "common/string_utils.h" namespace rx { namespace nativegl { typedef std::map<GLenum, GLenum> InternalFormatConversionMap; static InternalFormatConversionMap BuildGLInternalFormatConversionMap() { InternalFormatConversionMap map; map[GL_BGRA8_EXT] = GL_RGBA8; map[GL_BGRA_EXT] = GL_RGBA; return map; } static InternalFormatConversionMap BuildGLESInternalFormatConversionMap() { InternalFormatConversionMap map; return map; } static const InternalFormatConversionMap &GetInternalFormatConversionMap(StandardGL standard) { if (standard == STANDARD_GL_DESKTOP) { static const InternalFormatConversionMap map = BuildGLInternalFormatConversionMap(); return map; } else if (standard == STANDARD_GL_ES) { static const InternalFormatConversionMap map = BuildGLESInternalFormatConversionMap(); return map; } else { UNREACHABLE(); static const InternalFormatConversionMap map; return map; } } static GLenum GetConvertedInternalFormat(GLenum format, StandardGL standard) { const InternalFormatConversionMap &map = GetInternalFormatConversionMap(standard); auto iter = map.find(format); return iter != map.end() ? iter->second : format; } SupportRequirement::SupportRequirement() : version(std::numeric_limits<GLuint>::max(), std::numeric_limits<GLuint>::max()), versionExtensions(), requiredExtensions() { } InternalFormat::InternalFormat() : texture(), filter(), renderbuffer(), framebufferAttachment() { } static inline SupportRequirement VersionOrExts(GLuint major, GLuint minor, const std::string &versionExt) { SupportRequirement requirement; requirement.version.major = major; requirement.version.minor = minor; angle::SplitStringAlongWhitespace(versionExt, &requirement.versionExtensions); return requirement; } static inline SupportRequirement VersionAndExts(GLuint major, GLuint minor, const std::string &requiredExt) { SupportRequirement requirement; requirement.version.major = major; requirement.version.minor = minor; angle::SplitStringAlongWhitespace(requiredExt, &requirement.requiredExtensions); return requirement; } static inline SupportRequirement VersionOrExtsAndExts(GLuint major, GLuint minor, const std::string &versionExt, const std::string &requiredExt) { SupportRequirement requirement; requirement.version.major = major; requirement.version.minor = minor; angle::SplitStringAlongWhitespace(versionExt, &requirement.versionExtensions); angle::SplitStringAlongWhitespace(requiredExt, &requirement.requiredExtensions); return requirement; } static inline SupportRequirement VersionOnly(GLuint major, GLuint minor) { SupportRequirement requirement; requirement.version.major = major; requirement.version.minor = minor; return requirement; } static inline SupportRequirement ExtsOnly(const std::string &ext) { SupportRequirement requirement; angle::SplitStringAlongWhitespace(ext, &requirement.requiredExtensions); return requirement; } static inline SupportRequirement Always() { SupportRequirement requirement; requirement.version.major = 0; requirement.version.minor = 0; return requirement; } static inline SupportRequirement Never() { SupportRequirement requirement; requirement.version.major = std::numeric_limits<GLuint>::max(); requirement.version.minor = std::numeric_limits<GLuint>::max(); return requirement; } struct InternalFormatInfo { InternalFormat glesInfo; InternalFormat glInfo; }; typedef std::pair<GLenum, InternalFormatInfo> InternalFormatInfoPair; typedef std::map<GLenum, InternalFormatInfo> InternalFormatInfoMap; // A helper function to insert data into the format map with fewer characters. static inline void InsertFormatMapping(InternalFormatInfoMap *map, GLenum internalFormat, const SupportRequirement &desktopTexture, const SupportRequirement &desktopFilter, const SupportRequirement &desktopRender, const SupportRequirement &esTexture, const SupportRequirement &esFilter, const SupportRequirement &esRender) { InternalFormatInfo formatInfo; formatInfo.glInfo.internalFormat = GetConvertedInternalFormat(internalFormat, STANDARD_GL_DESKTOP); formatInfo.glInfo.texture = desktopTexture; formatInfo.glInfo.filter = desktopFilter; formatInfo.glInfo.renderbuffer = desktopRender; formatInfo.glInfo.framebufferAttachment = desktopRender; formatInfo.glesInfo.internalFormat = GetConvertedInternalFormat(internalFormat, STANDARD_GL_ES); formatInfo.glesInfo.texture = esTexture; formatInfo.glesInfo.filter = esTexture; formatInfo.glesInfo.renderbuffer = esFilter; formatInfo.glesInfo.framebufferAttachment = esRender; map->insert(std::make_pair(internalFormat, formatInfo)); } static InternalFormatInfoMap BuildInternalFormatInfoMap() { InternalFormatInfoMap map; // | Format | OpenGL texture support | Filter | OpenGL render support | OpenGL ES texture support | Filter | OpenGL ES render support | InsertFormatMapping(&map, GL_R8, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Always(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg"), Always(), VersionOrExts(3, 0, "GL_EXT_texture_rg") ); InsertFormatMapping(&map, GL_R8_SNORM, VersionOnly(3, 1), Always(), Never(), VersionOnly(3, 0), Always(), Never() ); InsertFormatMapping(&map, GL_RG8, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Always(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg"), Always(), VersionOrExts(3, 0, "GL_ARB_texture_rg") ); InsertFormatMapping(&map, GL_RG8_SNORM, VersionOnly(3, 1), Always(), Never(), VersionOnly(3, 0), Always(), Never() ); InsertFormatMapping(&map, GL_RGB8, Always(), Always(), Always(), VersionOrExts(3, 0, "GL_OES_rgb8_rgba8"), Always(), Always() ); InsertFormatMapping(&map, GL_RG8_SNORM, VersionOnly(3, 1), Always(), Never(), VersionOnly(3, 0), Always(), Never() ); InsertFormatMapping(&map, GL_RGB565, Always(), Always(), Always(), Always(), Always(), Always() ); InsertFormatMapping(&map, GL_RGBA4, Always(), Always(), Always(), Always(), Always(), Always() ); InsertFormatMapping(&map, GL_RGB5_A1, Always(), Always(), Always(), Always(), Always(), Always() ); InsertFormatMapping(&map, GL_RGBA8, Always(), Always(), Always(), VersionOrExts(3, 0, "GL_OES_rgb8_rgba8"), Always(), VersionOrExts(3, 0, "GL_OES_rgb8_rgba8") ); InsertFormatMapping(&map, GL_RGBA8_SNORM, VersionOnly(3, 1), Always(), Never(), VersionOnly(3, 0), Always(), Never() ); InsertFormatMapping(&map, GL_RGB10_A2, Always(), Always(), Always(), VersionOnly(3, 0), Always(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGB10_A2UI, VersionOrExts(3, 3, "GL_ARB_texture_rgb10_a2ui"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_SRGB8, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), VersionOrExts(3, 0, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(3, 0, "GL_EXT_texture_sRGB")); InsertFormatMapping(&map, GL_SRGB8_ALPHA8, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), VersionOrExts(3, 0, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(3, 0, "GL_EXT_texture_sRGB")); InsertFormatMapping(&map, GL_R8I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R8UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R16I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R16UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R32I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R32UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG8I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG8UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG16I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG16UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG32I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG32UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGB8I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_RGB8UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_RGB16I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_RGB16UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_RGB32I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_RGB32UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_RGBA8I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA8UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA16I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA16UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA32I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA32UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); // Unsized formats InsertFormatMapping(&map, GL_ALPHA, Never(), Never(), Never(), Never(), Never(), Never() ); InsertFormatMapping(&map, GL_LUMINANCE, Never(), Never(), Never(), Never(), Never(), Never() ); InsertFormatMapping(&map, GL_LUMINANCE_ALPHA, Never(), Never(), Never(), Never(), Never(), Never() ); InsertFormatMapping(&map, GL_RED, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Always(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg"), Always(), VersionOrExts(3, 0, "GL_ARB_texture_rg") ); InsertFormatMapping(&map, GL_RG, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Always(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg"), Always(), VersionOrExts(3, 0, "GL_ARB_texture_rg") ); InsertFormatMapping(&map, GL_RGB, Always(), Always(), Always(), Always(), Always(), Always() ); InsertFormatMapping(&map, GL_RGBA, Always(), Always(), Always(), Always(), Always(), Always() ); InsertFormatMapping(&map, GL_RED_INTEGER, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG_INTEGER, VersionOrExts(3, 0, "GL_ARB_texture_rg"), Never(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGB_INTEGER, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), Never(), VersionOnly(3, 0), Never(), Never() ); InsertFormatMapping(&map, GL_RGBA_INTEGER, VersionOrExts(3, 0, "GL_EXT_texture_integer"), Never(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), Never(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_SRGB, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), VersionOrExts(3, 0, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(3, 0, "GL_EXT_texture_sRGB")); InsertFormatMapping(&map, GL_SRGB_ALPHA, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), VersionOrExts(3, 0, "GL_EXT_texture_sRGB"), Always(), VersionOrExts(3, 0, "GL_EXT_texture_sRGB")); // From GL_EXT_texture_format_BGRA8888 InsertFormatMapping(&map, GL_BGRA8_EXT, VersionOrExts(1, 2, "GL_EXT_bgra"), Always(), VersionOrExts(1, 2, "GL_EXT_bgra"), ExtsOnly("GL_EXT_texture_format_BGRA8888"), Always(), ExtsOnly("GL_EXT_texture_format_BGRA8888")); InsertFormatMapping(&map, GL_BGRA_EXT, VersionOrExts(1, 2, "GL_EXT_bgra"), Always(), VersionOrExts(1, 2, "GL_EXT_bgra"), ExtsOnly("GL_EXT_texture_format_BGRA8888"), Always(), ExtsOnly("GL_EXT_texture_format_BGRA8888")); // Floating point formats // | Format | OpenGL texture support | Filter | OpenGL render support | OpenGL ES texture support | Filter | OpenGL ES render support | InsertFormatMapping(&map, GL_R11F_G11F_B10F, VersionOrExts(3, 0, "GL_EXT_packed_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_EXT_packed_float", "GL_ARB_color_buffer_float"), VersionOnly(3, 0), Always(), VersionAndExts(3, 0, "GL_EXT_color_buffer_float") ); InsertFormatMapping(&map, GL_RGB9_E5, VersionOrExts(3, 0, "GL_EXT_texture_shared_exponent"), Always(), VersionOrExtsAndExts(3, 0, "GL_EXT_texture_shared_exponent", "GL_ARB_color_buffer_float"), VersionOnly(3, 0), Always(), VersionAndExts(3, 0, "GL_EXT_color_buffer_float") ); InsertFormatMapping(&map, GL_R16F, VersionOrExts(3, 0, "GL_ARB_texture_rg ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float GL_EXT_texture_rg"), VersionOrExts(3, 0, "GL_OES_texture_half_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_half_float GL_EXT_texture_rg")); InsertFormatMapping(&map, GL_RG16F, VersionOrExts(3, 0, "GL_ARB_texture_rg ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float GL_EXT_texture_rg"), VersionOrExts(3, 0, "GL_OES_texture_half_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_half_float GL_EXT_texture_rg")); InsertFormatMapping(&map, GL_RGB16F, VersionOrExts(3, 0, "GL_ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_half_float") ); InsertFormatMapping(&map, GL_RGBA16F, VersionOrExts(3, 0, "GL_ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_half_float") ); InsertFormatMapping(&map, GL_R32F, VersionOrExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_float GL_EXT_texture_rg"), VersionOrExts(3, 0, "GL_OES_texture_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_float GL_EXT_texture_rg") ); InsertFormatMapping(&map, GL_RG32F, VersionOrExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_float GL_EXT_texture_rg"), VersionOrExts(3, 0, "GL_OES_texture_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_float GL_EXT_texture_rg") ); InsertFormatMapping(&map, GL_RGB32F, VersionOrExts(3, 0, "GL_ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_float"), VersionOrExts(3, 0, "GL_OES_texture_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_float") ); InsertFormatMapping(&map, GL_RGBA32F, VersionOrExts(3, 0, "GL_ARB_texture_float"), Always(), VersionOrExtsAndExts(3, 0, "GL_ARB_texture_float", "GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_float"), VersionOrExts(3, 0, "GL_OES_texture_float_linear"), VersionOrExts(3, 0, "GL_OES_texture_float") ); // Depth stencil formats // | Format | OpenGL texture support | Filter | OpenGL render support | OpenGL ES texture support | Filter | OpenGL ES render support | InsertFormatMapping(&map, GL_DEPTH_COMPONENT16, VersionOnly(1, 5), VersionOrExts(1, 5, "GL_ARB_depth_texture"), VersionOnly(1, 5), VersionOnly(2, 0), VersionOrExts(3, 0, "GL_OES_depth_texture"), VersionOnly(2, 0) ); InsertFormatMapping(&map, GL_DEPTH_COMPONENT24, VersionOnly(1, 5), VersionOrExts(1, 5, "GL_ARB_depth_texture"), VersionOnly(1, 5), VersionOnly(2, 0), VersionOrExts(3, 0, "GL_OES_depth_texture"), VersionOnly(2, 0) ); InsertFormatMapping(&map, GL_DEPTH_COMPONENT32_OES, VersionOnly(1, 5), VersionOrExts(1, 5, "GL_ARB_depth_texture"), VersionOnly(1, 5), ExtsOnly("GL_OES_depth_texture"), Always(), ExtsOnly("GL_OES_depth_texture") ); InsertFormatMapping(&map, GL_DEPTH_COMPONENT32F, VersionOrExts(3, 0, "GL_ARB_depth_buffer_float"), Always(), VersionOrExts(3, 0, "GL_ARB_depth_buffer_float"), VersionOnly(3, 0), VersionOrExts(3, 0, "GL_OES_depth_texture"), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_DEPTH24_STENCIL8, VersionOrExts(3, 0, "GL_ARB_framebuffer_object"), VersionOrExts(3, 0, "GL_ARB_depth_texture"), VersionOrExts(3, 0, "GL_ARB_framebuffer_object"), VersionOrExts(3, 0, "GL_OES_depth_texture"), Always(), VersionOrExts(3, 0, "GL_OES_depth_texture GL_OES_packed_depth_stencil")); InsertFormatMapping(&map, GL_DEPTH32F_STENCIL8, VersionOrExts(3, 0, "GL_ARB_depth_buffer_float"), Always(), VersionOrExts(3, 0, "GL_ARB_depth_buffer_float"), VersionOnly(3, 0), Always(), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_DEPTH_COMPONENT, VersionOnly(1, 5), VersionOrExts(1, 5, "GL_ARB_depth_texture"), VersionOnly(1, 5), VersionOnly(2, 0), VersionOrExts(3, 0, "GL_OES_depth_texture"), VersionOnly(2, 0) ); InsertFormatMapping(&map, GL_DEPTH_STENCIL, VersionOnly(1, 5), VersionOrExts(1, 5, "GL_ARB_depth_texture"), VersionOnly(1, 5), VersionOnly(2, 0), VersionOrExts(3, 0, "GL_OES_depth_texture"), VersionOnly(2, 0) ); // Luminance alpha formats (TODO) InsertFormatMapping(&map, GL_ALPHA8_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_LUMINANCE8_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_ALPHA32F_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_LUMINANCE32F_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_ALPHA16F_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_LUMINANCE16F_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_LUMINANCE8_ALPHA8_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_LUMINANCE_ALPHA32F_EXT, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_LUMINANCE_ALPHA16F_EXT, Never(), Never(), Never(), Never(), Never(), Never()); // Compressed formats, From ES 3.0.1 spec, table 3.16 InsertFormatMapping(&map, GL_COMPRESSED_R11_EAC, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_SIGNED_R11_EAC, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_RG11_EAC, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_SIGNED_RG11_EAC, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_RGB8_ETC2, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ETC2, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA8_ETC2_EAC, Never(), Never(), Never(), Never(), Never(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, Never(), Never(), Never(), Never(), Never(), Never()); // From GL_EXT_texture_compression_dxt1 // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | Render | InsertFormatMapping(&map, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, ExtsOnly("GL_EXT_texture_compression_s3tc"), Always(), Never(), ExtsOnly("GL_EXT_texture_compression_dxt1"), Always(), Never()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, ExtsOnly("GL_EXT_texture_compression_s3tc"), Always(), Never(), ExtsOnly("GL_EXT_texture_compression_dxt1"), Always(), Never()); // From GL_ANGLE_texture_compression_dxt3 InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, ExtsOnly("GL_EXT_texture_compression_s3tc"), Always(), Never(), ExtsOnly("GL_ANGLE_texture_compression_dxt3"), Always(), Never()); // From GL_ANGLE_texture_compression_dxt5 InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, ExtsOnly("GL_EXT_texture_compression_s3tc"), Always(), Never(), ExtsOnly("GL_ANGLE_texture_compression_dxt5"), Always(), Never()); return map; } static const InternalFormatInfoMap &GetInternalFormatMap() { static const InternalFormatInfoMap formatMap = BuildInternalFormatInfoMap(); return formatMap; } const InternalFormat &GetInternalFormatInfo(GLenum internalFormat, StandardGL standard) { const InternalFormatInfoMap &formatMap = GetInternalFormatMap(); InternalFormatInfoMap::const_iterator iter = formatMap.find(internalFormat); if (iter != formatMap.end()) { const InternalFormatInfo &info = iter->second; switch (standard) { case STANDARD_GL_ES: return info.glesInfo; case STANDARD_GL_DESKTOP: return info.glInfo; default: UNREACHABLE(); break; } } static const InternalFormat defaultInternalFormat; return defaultInternalFormat; } } }