kc3-lang/angle/src/libANGLE/renderer/gl/formatutilsgl.cpp
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Hash : a4e00c64
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Date : 2022-06-30T00:00:00
Expose EXT_compressed_ETC1_RGB8_sub_texture on Metal and GL Updated the test to ensure that this extension is exposed on Apple GPUs when using Metal. Updated emulatedEtc1 limitation to hide this extension when the main ETC1 extension is hidden. Real WebGL apps cannot enable this extension because it is not exposed in WebIDL. Removed bogus entry from IsETC1Format and use the helper consistently in all validation functions. Simplified GetNativeCompressedFormat. Bug: angleproject:7471 Change-Id: I61321fadad7d962358d0fefecd08aaddaedd2ec2 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3737762 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
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src/libANGLE/renderer/gl/formatutilsgl.cpp
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// // Copyright 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 "anglebase/no_destructor.h" #include "common/string_utils.h" #include "libANGLE/formatutils.h" #include "platform/FeaturesGL_autogen.h" namespace rx { namespace nativegl { SupportRequirement::SupportRequirement() : version(std::numeric_limits<GLuint>::max(), std::numeric_limits<GLuint>::max()), versionExtensions(), requiredExtensions() {} SupportRequirement::SupportRequirement(const SupportRequirement &other) = default; SupportRequirement &SupportRequirement::operator=(const SupportRequirement &other) = default; SupportRequirement::~SupportRequirement() = default; InternalFormat::InternalFormat() : texture(), filter(), textureAttachment(), renderbuffer() {} InternalFormat::InternalFormat(const InternalFormat &other) = default; InternalFormat::~InternalFormat() {} // supported = version || vertexExt 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; } // supported = requiredExt && (version || requiredWithoutVersionExt) static inline SupportRequirement ExtAndVersionOrExt(const std::string &requiredExt, GLuint major, GLuint minor, const std::string &requiredWithoutVersionExt) { SupportRequirement requirement; requirement.requiredExtensions.resize(1); angle::SplitStringAlongWhitespace(requiredExt, &requirement.requiredExtensions[0]); requirement.version.major = major; requirement.version.minor = minor; angle::SplitStringAlongWhitespace(requiredWithoutVersionExt, &requirement.versionExtensions); return requirement; } // supported = version static inline SupportRequirement VersionOnly(GLuint major, GLuint minor) { SupportRequirement requirement; requirement.version.major = major; requirement.version.minor = minor; return requirement; } // supported = any one of sets in exts static inline SupportRequirement ExtsOnly(const std::vector<std::string> &exts) { SupportRequirement requirement; requirement.version.major = 0; requirement.version.minor = 0; requirement.requiredExtensions.resize(exts.size()); for (size_t i = 0; i < exts.size(); i++) { angle::SplitStringAlongWhitespace(exts[i], &requirement.requiredExtensions[i]); } return requirement; } // supported = ext static inline SupportRequirement ExtsOnly(const std::string &ext) { return ExtsOnly(std::vector<std::string>({ext})); } // supported = ext1 || ext2 static inline SupportRequirement ExtsOnly(const std::string &ext1, const std::string &ext2) { return ExtsOnly(std::vector<std::string>({ext1, ext2})); } // supported = true static inline SupportRequirement AlwaysSupported() { SupportRequirement requirement; requirement.version.major = 0; requirement.version.minor = 0; return requirement; } // supported = false static inline SupportRequirement NeverSupported() { 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 &esTextureAttachment, const SupportRequirement &esRenderbufferAttachment) { InternalFormatInfo formatInfo; formatInfo.glInfo.texture = desktopTexture; formatInfo.glInfo.filter = desktopFilter; // No difference spotted yet in Desktop GL texture attachment and renderbuffer capabilities formatInfo.glInfo.textureAttachment = desktopRender; formatInfo.glInfo.renderbuffer = desktopRender; formatInfo.glesInfo.texture = esTexture; formatInfo.glesInfo.filter = esFilter; formatInfo.glesInfo.textureAttachment = esTextureAttachment; formatInfo.glesInfo.renderbuffer = esRenderbufferAttachment; map->insert(std::make_pair(internalFormat, formatInfo)); } // Note 1: This map is used to determine extensions support, which is based on checking support for // sized formats (this is ANGLE implementation limitation - D3D backend supports only sized formats) // In order to determine support for extensions which introduce unsized formats, this map would say // that a corresponding sized format is supported, instead. Thus, if this map says that a sized // format is supported, this means that either the actual sized format or a corresponding unsized // format is supported by the native driver. // For example, GL_EXT_texture_rg provides support for RED_EXT format with UNSIGNED_BYTE type. // Therefore, DetermineRGTextureSupport checks for GL_R8 support. Therefore this map says that // GL_R8 (and not RED_EXT) is supported if GL_EXT_texture_rg is available. GL_R8 itself // is supported in ES3, thus the combined condition is VersionOrExts(3, 0, "GL_EXT_texture_rg"). // // Note 2: Texture Attachment support is checked also by SupportsNativeRendering(). // Unsized formats appear in this map for this reason. The assumption is // that SupportsNativeRendering() will not check sized formats in the ES2 frontend // and the information in unsized formats is correct, and not merged like for sized formats. // In the ES3 frontend, it could happen that SupportsNativeRendering() would be wrong, // but this will be mitigated by fall back to CPU-readback in TextureGL::copySubTextureHelper(). // // Note 3: Because creating renderbuffers with unsized formats is impossible, // the value of renderbuffer support is actually correct for the sized formats. // // Note 4: To determine whether a format is filterable, one must check both "Filter" and "Texture" // support, like it is done in GenerateTextureFormatCaps(). // On the other hand, "Texture Attachment" support formula is self-contained. // // TODO(ynovikov): http://anglebug.com/2846 Verify support fields of BGRA, depth, stencil and // compressed formats, and all formats for Desktop GL. static InternalFormatInfoMap BuildInternalFormatInfoMap() { InternalFormatInfoMap map; // clang-format off // | Format | OpenGL texture support | Filter | OpenGL render support | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_R8, VersionOrExts(3, 0, "GL_ARB_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_EXT_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg") ); InsertFormatMapping(&map, GL_R8_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), VersionOnly(3, 0), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RG8, VersionOrExts(3, 0, "GL_ARB_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_EXT_texture_rg"), VersionOrExts(3, 0, "GL_EXT_texture_rg") ); InsertFormatMapping(&map, GL_RG8_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), VersionOnly(3, 0), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB8, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), VersionOnly(2, 0), VersionOrExts(3, 0, "GL_OES_rgb8_rgba8") ); InsertFormatMapping(&map, GL_RGB8_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), VersionOnly(3, 0), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB565, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported() ); InsertFormatMapping(&map, GL_RGBA4, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported() ); InsertFormatMapping(&map, GL_RGB5_A1, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported() ); InsertFormatMapping(&map, GL_RGBA8, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), VersionOnly(2, 0), VersionOrExts(3, 0, "GL_OES_rgb8_rgba8") ); InsertFormatMapping(&map, GL_RGBA8_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), VersionOnly(3, 0), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB10_A2, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), VersionOnly(3, 0), AlwaysSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGB10_A2UI, VersionOrExts(3, 3, "GL_ARB_texture_rgb10_a2ui"), NeverSupported(), AlwaysSupported(), VersionOnly(3, 0), NeverSupported(), AlwaysSupported(), AlwaysSupported() ); InsertFormatMapping(&map, GL_SRGB8, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), VersionOrExts(3, 0, "GL_EXT_sRGB"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_SRGB8_ALPHA8, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), VersionOrExts(3, 0, "GL_EXT_sRGB"), AlwaysSupported(), VersionOrExts(3, 0, "GL_EXT_sRGB"), VersionOrExts(3, 0, "GL_EXT_sRGB") ); InsertFormatMapping(&map, GL_R8I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R8UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R16I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R16UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R32I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R32UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG8I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG8UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG16I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG16UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG32I, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RG32UI, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGB8I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), NeverSupported(), VersionOnly(3, 0), NeverSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB8UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), NeverSupported(), VersionOnly(3, 0), NeverSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB16I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), NeverSupported(), VersionOnly(3, 0), NeverSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB16UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), NeverSupported(), VersionOnly(3, 0), NeverSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB32I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), NeverSupported(), VersionOnly(3, 0), NeverSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB32UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), NeverSupported(), VersionOnly(3, 0), NeverSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGBA8I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA8UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA16I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA16UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA32I, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_RGBA32UI, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_R16, VersionOrExts(3, 0, "GL_ARB_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), ExtsOnly("GL_EXT_texture_norm16"), ExtsOnly("GL_EXT_texture_norm16") ); InsertFormatMapping(&map, GL_RG16, VersionOrExts(3, 0, "GL_ARB_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), ExtsOnly("GL_EXT_texture_norm16"), ExtsOnly("GL_EXT_texture_norm16") ); InsertFormatMapping(&map, GL_RGB16, AlwaysSupported(), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGBA16, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), ExtsOnly("GL_EXT_texture_norm16"), ExtsOnly("GL_EXT_texture_norm16") ); InsertFormatMapping(&map, GL_R16_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RG16_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGB16_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGBA16_SNORM, VersionOnly(3, 1), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_norm16"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // Unsized formats InsertFormatMapping(&map, GL_ALPHA, NeverSupported(), NeverSupported(), NeverSupported(), AlwaysSupported(), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE, NeverSupported(), NeverSupported(), NeverSupported(), AlwaysSupported(), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE_ALPHA, NeverSupported(), NeverSupported(), NeverSupported(), AlwaysSupported(), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RED, VersionOrExts(3, 0, "GL_ARB_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), ExtsOnly("GL_EXT_texture_rg"), AlwaysSupported(), ExtsOnly("GL_EXT_texture_rg"), NeverSupported() ); InsertFormatMapping(&map, GL_RG, VersionOrExts(3, 0, "GL_ARB_texture_rg"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), ExtsOnly("GL_EXT_texture_rg"), AlwaysSupported(), ExtsOnly("GL_EXT_texture_rg"), NeverSupported() ); InsertFormatMapping(&map, GL_RGB, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), VersionOnly(2, 0), NeverSupported() ); InsertFormatMapping(&map, GL_RGBA, AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), AlwaysSupported(), VersionOnly(2, 0), NeverSupported() ); InsertFormatMapping(&map, GL_RED_INTEGER, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), NeverSupported() ); InsertFormatMapping(&map, GL_RG_INTEGER, VersionOrExts(3, 0, "GL_ARB_texture_rg"), NeverSupported(), VersionOrExts(3, 0, "GL_ARB_texture_rg"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), NeverSupported() ); InsertFormatMapping(&map, GL_RGB_INTEGER, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), NeverSupported(), VersionOnly(3, 0), NeverSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGBA_INTEGER, VersionOrExts(3, 0, "GL_EXT_texture_integer"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_texture_integer"), VersionOnly(3, 0), NeverSupported(), VersionOnly(3, 0), NeverSupported() ); InsertFormatMapping(&map, GL_SRGB, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), ExtsOnly("GL_EXT_sRGB"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_SRGB_ALPHA, VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), VersionOrExts(2, 1, "GL_EXT_texture_sRGB"), ExtsOnly("GL_EXT_sRGB"), AlwaysSupported(), ExtsOnly("GL_EXT_sRGB"), NeverSupported() ); // From GL_EXT_texture_format_BGRA8888 InsertFormatMapping(&map, GL_BGRA8_EXT, VersionOrExts(1, 2, "GL_EXT_bgra"), AlwaysSupported(), VersionOrExts(1, 2, "GL_EXT_bgra"), ExtsOnly("GL_EXT_texture_format_BGRA8888"), AlwaysSupported(), ExtsOnly("GL_EXT_texture_format_BGRA8888"), ExtsOnly("GL_EXT_texture_format_BGRA8888") ); InsertFormatMapping(&map, GL_BGRA_EXT, VersionOrExts(1, 2, "GL_EXT_bgra"), AlwaysSupported(), VersionOrExts(1, 2, "GL_EXT_bgra"), ExtsOnly("GL_EXT_texture_format_BGRA8888"), AlwaysSupported(), ExtsOnly("GL_EXT_texture_format_BGRA8888"), ExtsOnly("GL_EXT_texture_format_BGRA8888") ); // From GL_EXT_texture_type_2_10_10_10_REV // Emulated with GL_RGB10_A2 on desktop GL InsertFormatMapping(&map, GL_RGB10_UNORM_ANGLEX,AlwaysSupported(), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_type_2_10_10_10_REV"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // Floating point formats // Note 1: GL_EXT_texture_shared_exponent and GL_ARB_color_buffer_float suggest that RGB9_E5 // would be renderable, but once support for renderable float textures got rolled into core GL // spec it wasn't intended to be renderable. In practice it's not reliably renderable even // with the extensions, there's a known bug in at least NVIDIA driver version 370. // // Note 2: It's a bit unclear whether texture attachments with GL_RGB16F should be supported // in ES3 with GL_EXT_color_buffer_half_float. Probably not, since in ES3 type is HALF_FLOAT, // but GL_EXT_color_buffer_half_float is applicable only to type HALF_FLOAT_OES. // // Note 3: GL_EXT_color_buffer_float implies that ES3.0 is supported, this simplifies the check. // // | Format | OpenGL texture support | Filter | OpenGL render support | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_R11F_G11F_B10F, VersionOrExts(3, 0, "GL_EXT_packed_float"), AlwaysSupported(), VersionOrExts(3, 0, "GL_EXT_packed_float GL_ARB_color_buffer_float"), VersionOnly(3, 0), AlwaysSupported(), ExtsOnly("GL_EXT_color_buffer_float"), ExtsOnly("GL_EXT_color_buffer_float") ); InsertFormatMapping(&map, GL_RGB9_E5, VersionOrExts(3, 0, "GL_EXT_texture_shared_exponent"), AlwaysSupported(), NeverSupported(), VersionOnly(3, 0), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_R16F, VersionOrExts(3, 0, "GL_ARB_texture_rg ARB_texture_float"), AlwaysSupported(), VersionOrExts(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"), ExtsOnly("GL_EXT_texture_storage GL_OES_texture_half_float GL_EXT_texture_rg GL_EXT_color_buffer_half_float", "GL_EXT_color_buffer_float"), ExtsOnly("GL_EXT_texture_rg GL_OES_texture_half_float GL_EXT_color_buffer_half_float", "GL_EXT_color_buffer_float")); InsertFormatMapping(&map, GL_RG16F, VersionOrExts(3, 0, "GL_ARB_texture_rg ARB_texture_float"), AlwaysSupported(), VersionOrExts(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"), ExtsOnly("GL_EXT_texture_storage GL_OES_texture_half_float GL_EXT_texture_rg GL_EXT_color_buffer_half_float", "GL_EXT_color_buffer_float"), ExtsOnly("GL_EXT_texture_rg GL_OES_texture_half_float GL_EXT_color_buffer_half_float", "GL_EXT_color_buffer_float")); InsertFormatMapping(&map, GL_RGB16F, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), VersionOrExts(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"), ExtsOnly("GL_EXT_texture_storage GL_OES_texture_half_float GL_EXT_color_buffer_half_float"), ExtsOnly("GL_OES_texture_half_float GL_EXT_color_buffer_half_float") ); InsertFormatMapping(&map, GL_RGBA16F, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), VersionOrExts(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"), ExtsOnly("GL_EXT_color_buffer_half_float", "GL_EXT_color_buffer_float"), ExtsOnly("GL_EXT_color_buffer_half_float", "GL_EXT_color_buffer_float") ); InsertFormatMapping(&map, GL_R32F, VersionOrExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float"), AlwaysSupported(), VersionOrExts(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"), ExtsOnly("GL_OES_texture_float_linear"), ExtsOnly("GL_EXT_color_buffer_float"), ExtsOnly("GL_EXT_color_buffer_float") ); InsertFormatMapping(&map, GL_RG32F, VersionOrExts(3, 0, "GL_ARB_texture_rg GL_ARB_texture_float"), AlwaysSupported(), VersionOrExts(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"), ExtsOnly("GL_OES_texture_float_linear"), ExtsOnly("GL_EXT_color_buffer_float"), ExtsOnly("GL_EXT_color_buffer_float") ); InsertFormatMapping(&map, GL_RGB32F, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_float GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_float"), ExtsOnly("GL_OES_texture_float_linear"), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_RGBA32F, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_texture_float GL_ARB_color_buffer_float"), VersionOrExts(3, 0, "GL_OES_texture_float"), ExtsOnly("GL_OES_texture_float_linear"), ExtsOnly("GL_EXT_color_buffer_float"), ExtsOnly("GL_EXT_color_buffer_float") ); // Depth stencil formats // | Format | OpenGL texture support | Filter | OpenGL render support | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer 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), 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), 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"), AlwaysSupported(), ExtsOnly("GL_OES_depth_texture"), ExtsOnly("GL_OES_depth32") ); InsertFormatMapping(&map, GL_DEPTH_COMPONENT32F, VersionOrExts(3, 0, "GL_ARB_depth_buffer_float"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_depth_buffer_float"), VersionOnly(3, 0), VersionOrExts(3, 0, "GL_OES_depth_texture"), VersionOnly(3, 0), VersionOnly(3, 0) ); InsertFormatMapping(&map, GL_STENCIL_INDEX8, VersionOrExts(3, 0, "GL_EXT_packed_depth_stencil"), NeverSupported(), VersionOrExts(3, 0, "GL_EXT_packed_depth_stencil"), VersionOnly(2, 0), NeverSupported(), VersionOnly(2, 0), VersionOnly(2, 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"), AlwaysSupported(), VersionOrExts(3, 0, "GL_OES_depth_texture GL_OES_packed_depth_stencil"), 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"), AlwaysSupported(), VersionOrExts(3, 0, "GL_ARB_depth_buffer_float"), VersionOnly(3, 0), AlwaysSupported(), VersionOnly(3, 0), 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), 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), VersionOnly(2, 0) ); // Luminance alpha formats // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_ALPHA8_EXT, AlwaysSupported(), AlwaysSupported(), NeverSupported(), AlwaysSupported(), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE8_EXT, AlwaysSupported(), AlwaysSupported(), NeverSupported(), AlwaysSupported(), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE8_ALPHA8_EXT, AlwaysSupported(), AlwaysSupported(), NeverSupported(), AlwaysSupported(), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_ALPHA16F_EXT, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "GL_OES_texture_half_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float_linear"), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE16F_EXT, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "GL_OES_texture_half_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float_linear"), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE_ALPHA16F_EXT, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "GL_OES_texture_half_float"), VersionOrExts(3, 0, "GL_OES_texture_half_float_linear"), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_ALPHA32F_EXT, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "GL_OES_texture_float"), ExtsOnly("GL_OES_texture_float_linear"), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE32F_EXT, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "GL_OES_texture_float"), ExtsOnly("GL_OES_texture_float_linear"), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_LUMINANCE_ALPHA32F_EXT, VersionOrExts(3, 0, "GL_ARB_texture_float"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "GL_OES_texture_float"), ExtsOnly("GL_OES_texture_float_linear"), NeverSupported(), NeverSupported() ); // GL_EXT_texture_sRGB_R8 and GL_EXT_texture_sRGB_RG8 formats // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_SR8_EXT, ExtsOnly("GL_EXT_texture_sRGB_R8"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_sRGB_R8"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_SRG8_EXT, ExtsOnly("GL_EXT_texture_sRGB_RG8"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_sRGB_RG8"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // EXT_texture_compression_rgtc formats // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_COMPRESSED_RED_RGTC1_EXT, VersionOrExts(3, 0, "GL_ARB_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SIGNED_RED_RGTC1_EXT, VersionOrExts(3, 0, "GL_ARB_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RED_GREEN_RGTC2_EXT, VersionOrExts(3, 0, "GL_ARB_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT, VersionOrExts(3, 0, "GL_ARB_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_rgtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // EXT_texture_compression_bptc formats // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_COMPRESSED_RGBA_BPTC_UNORM_EXT, VersionOrExts(4, 2, "GL_ARB_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT, VersionOrExts(4, 2, "GL_ARB_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT, VersionOrExts(4, 2, "GL_ARB_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT, VersionOrExts(4, 2, "GL_ARB_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_bptc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // Compressed formats, From ES 3.0.1 spec, table 3.16 // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_COMPRESSED_R11_EAC, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_EAC_R11_unsigned_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SIGNED_R11_EAC, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_EAC_R11_signed_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RG11_EAC, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_EAC_RG11_unsigned_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SIGNED_RG11_EAC, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_EAC_RG11_signed_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGB8_ETC2, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_ETC2_RGB8_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ETC2, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_ETC2_sRGB8_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_ETC2_punchthroughA_RGBA8_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGBA8_ETC2_EAC, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_ETC2_RGBA8_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "OES_compressed_ETC2_sRGB8_alpha8_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // From GL_EXT_texture_compression_dxt1 // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, ExtsOnly("GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_dxt1", "GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, ExtsOnly("GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_dxt1", "GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // From GL_ANGLE_texture_compression_dxt3 InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, ExtsOnly("GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_ANGLE_texture_compression_dxt3", "GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // From GL_ANGLE_texture_compression_dxt5 InsertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, ExtsOnly("GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_ANGLE_texture_compression_dxt5", "GL_EXT_texture_compression_s3tc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // From GL_EXT_texture_compression_s3tc_srgb // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, ExtAndVersionOrExt("GL_EXT_texture_compression_s3tc", 2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_s3tc_srgb", "GL_EXT_texture_compression_s3tc GL_NV_sRGB_formats"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, ExtAndVersionOrExt("GL_EXT_texture_compression_s3tc", 2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_s3tc_srgb", "GL_EXT_texture_compression_s3tc GL_NV_sRGB_formats"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, ExtAndVersionOrExt("GL_EXT_texture_compression_s3tc", 2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_s3tc_srgb", "GL_EXT_texture_compression_s3tc GL_NV_sRGB_formats"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, ExtAndVersionOrExt("GL_EXT_texture_compression_s3tc", 2, 1, "GL_EXT_texture_sRGB"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_EXT_texture_compression_s3tc_srgb", "GL_EXT_texture_compression_s3tc GL_NV_sRGB_formats"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // From GL_OES_compressed_ETC1_RGB8_texture InsertFormatMapping(&map, GL_ETC1_RGB8_OES, VersionOrExts(4, 3, "GL_ARB_ES3_compatibility"), AlwaysSupported(), NeverSupported(), VersionOrExts(3, 0, "GL_OES_compressed_ETC1_RGB8_texture"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // From GL_OES_texture_compression_astc // | Format | OpenGL texture | Filter | Render | OpenGL ES texture support | Filter | ES attachment | ES renderbuffer | InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_4x4_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_5x4_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_5x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_6x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_6x6_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_8x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_8x6_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_8x8_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_10x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_10x6_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_10x8_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_10x10_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_12x10_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_12x12_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_KHR_texture_compression_astc_ldr"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_3x3x3_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_4x3x3_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_4x4x3_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_4x4x4_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_5x4x4_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_5x5x4_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_5x5x5_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_6x5x5_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_6x6x5_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_ASTC_6x6x6_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); InsertFormatMapping(&map, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_OES_texture_compression_astc"), AlwaysSupported(), NeverSupported(), NeverSupported()); // From GL_IMG_texture_compression_pvrtc // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG, ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG, ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG, ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG, ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // From GL_EXT_pvrtc_sRGB // | Format | OpenGL texture support | Filter | Render | OpenGL ES texture support | Filter | OpenGL ES texture attachment support | OpenGL ES renderbuffer support | InsertFormatMapping(&map, GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc GL_EXT_pvrtc_sRGB"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc GL_EXT_pvrtc_sRGB"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc GL_EXT_pvrtc_sRGB"), AlwaysSupported(), NeverSupported(), NeverSupported() ); InsertFormatMapping(&map, GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT, NeverSupported(), NeverSupported(), NeverSupported(), ExtsOnly("GL_IMG_texture_compression_pvrtc GL_EXT_pvrtc_sRGB"), AlwaysSupported(), NeverSupported(), NeverSupported() ); // clang-format on return map; } static const InternalFormatInfoMap &GetInternalFormatMap() { static const angle::base::NoDestructor<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 angle::base::NoDestructor<InternalFormat> defaultInternalFormat; return *defaultInternalFormat; } static bool IsLUMAFormat(GLenum format) { return (format == GL_LUMINANCE || format == GL_ALPHA || format == GL_LUMINANCE_ALPHA); } static GLenum EmulateLUMAFormat(const GLenum format) { // This is needed separately from EmulateLUMA because some format/type combinations that come in // to GetNativeFormat don't have entries in the internal format map. ASSERT(IsLUMAFormat(format)); if (format == GL_LUMINANCE || format == GL_ALPHA) return GL_RED; return GL_RG; } static const gl::InternalFormat &EmulateLUMA(const gl::InternalFormat &internalFormat) { ASSERT(IsLUMAFormat(internalFormat.format)); // Work around deprecated luminance/alpha formats in the OpenGL core profile, and OpenGL ES 3.0 // and greater, by backing them with R or RG textures. return gl::GetInternalFormatInfo(EmulateLUMAFormat(internalFormat.format), internalFormat.type); } static GLenum GetNativeInternalFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, const gl::InternalFormat &internalFormat) { GLenum result = internalFormat.internalFormat; if (functions->standard == STANDARD_GL_DESKTOP) { // Use sized internal formats whenever possible to guarantee the requested precision. // On Desktop GL, passing an internal format of GL_RGBA will generate a GL_RGBA8 texture // even if the provided type is GL_FLOAT. result = internalFormat.sizedInternalFormat; if (features.avoid1BitAlphaTextureFormats.enabled && internalFormat.alphaBits == 1) { // Use an 8-bit format instead result = GL_RGBA8; } if (internalFormat.sizedInternalFormat == GL_RGBA4 && (features.RGBA4IsNotSupportedForColorRendering.enabled || features.promotePackedFormatsTo8BitPerChannel.enabled)) { // Use an 8-bit format instead result = GL_RGBA8; } if (internalFormat.sizedInternalFormat == GL_RGB565 && ((!functions->isAtLeastGL(gl::Version(4, 1)) && !functions->hasGLExtension("GL_ARB_ES2_compatibility")) || features.promotePackedFormatsTo8BitPerChannel.enabled)) { // GL_RGB565 is required for basic ES2 functionality but was not added to desktop GL // until 4.1. // Work around this by using an 8-bit format instead. result = GL_RGB8; } if (internalFormat.sizedInternalFormat == GL_BGRA8_EXT) { // GLES accepts GL_BGRA as an internal format but desktop GL only accepts it as a type. // Update the internal format to GL_RGBA. result = GL_RGBA8; } if ((functions->profile & GL_CONTEXT_CORE_PROFILE_BIT) != 0) { if (IsLUMAFormat(internalFormat.format)) { result = EmulateLUMA(internalFormat).sizedInternalFormat; } } if (internalFormat.sizedInternalFormat == GL_RGB10_UNORM_ANGLEX) { ASSERT(features.emulateRGB10.enabled); result = GL_RGB10_A2; } } else if (functions->isAtLeastGLES(gl::Version(3, 0))) { if (internalFormat.componentType == GL_FLOAT) { if (!internalFormat.isLUMA()) { // Use sized internal formats for floating point textures. Extensions such as // EXT_color_buffer_float require the sized formats to be renderable. result = internalFormat.sizedInternalFormat; } else if ((internalFormat.type == GL_FLOAT && !functions->hasGLESExtension("GL_OES_texture_float")) || (internalFormat.type == GL_HALF_FLOAT_OES && !functions->hasGLESExtension("GL_OES_texture_half_float"))) { // The legacy luminance/alpha formats from OES_texture_float are emulated with R/RG // textures. if (IsLUMAFormat(internalFormat.format)) { result = EmulateLUMA(internalFormat).sizedInternalFormat; } } } else if (internalFormat.format == GL_RED_EXT || internalFormat.format == GL_RG_EXT) { // Workaround Adreno driver not supporting unsized EXT_texture_rg formats result = internalFormat.sizedInternalFormat; } else if (internalFormat.colorEncoding == GL_SRGB) { if (features.unsizedSRGBReadPixelsDoesntTransform.enabled) { // Work around some Adreno driver bugs that don't read back SRGB data correctly when // it's in unsized SRGB texture formats. result = internalFormat.sizedInternalFormat; } else if (!functions->hasGLESExtension("GL_EXT_sRGB")) { // Unsized sRGB internal formats are unlikely to be supported by the // driver. Transform them to sized internal formats. if (internalFormat.internalFormat == GL_SRGB || internalFormat.internalFormat == GL_SRGB_ALPHA_EXT) { result = internalFormat.sizedInternalFormat; } } } else if ((internalFormat.internalFormat == GL_DEPTH_COMPONENT || internalFormat.internalFormat == GL_DEPTH_STENCIL) && !functions->hasGLESExtension("GL_OES_depth_texture")) { // Use ES 3.0 sized internal formats for depth/stencil textures when the driver doesn't // advertise GL_OES_depth_texture, since it's likely the driver will reject unsized // internal formats. if (internalFormat.internalFormat == GL_DEPTH_COMPONENT && internalFormat.type == GL_UNSIGNED_INT && !functions->hasGLESExtension("GL_OES_depth32")) { // Best-effort attempt to provide as many bits as possible. result = GL_DEPTH_COMPONENT24; // Note: could also consider promoting GL_DEPTH_COMPONENT / GL_UNSIGNED_SHORT to a // higher precision. } else { result = internalFormat.sizedInternalFormat; } } } return result; } static GLenum GetNativeFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum format, GLenum type) { GLenum result = format; if (functions->standard == STANDARD_GL_DESKTOP) { // The ES SRGB extensions require that the provided format is GL_SRGB or SRGB_ALPHA but // the desktop GL extensions only accept GL_RGB or GL_RGBA. Convert them. if (format == GL_SRGB) { result = GL_RGB; } if (format == GL_SRGB_ALPHA) { result = GL_RGBA; } if ((functions->profile & GL_CONTEXT_CORE_PROFILE_BIT) != 0) { // Work around deprecated luminance alpha formats in the OpenGL core profile by backing // them with R or RG textures. if (IsLUMAFormat(format)) { result = EmulateLUMAFormat(format); } } } else if (functions->isAtLeastGLES(gl::Version(3, 0))) { // Transform sRGB formats to RGB if either the GLES driver doesn't support GL_EXT_sRGB, or // to work around Adreno driver bugs reading back unsized sRGB texture data. if (!functions->hasGLESExtension("GL_EXT_sRGB") || features.unsizedSRGBReadPixelsDoesntTransform.enabled) { if (format == GL_SRGB) { result = GL_RGB; } if (format == GL_SRGB_ALPHA_EXT) { result = GL_RGBA; } } if ((type == GL_FLOAT && !functions->hasGLESExtension("GL_OES_texture_float")) || (type == GL_HALF_FLOAT_OES && !functions->hasGLESExtension("GL_OES_texture_half_float"))) { // On ES 3.0 systems that don't have GL_OES_texture_float or OES_texture_half_float, the // LUMINANCE/ALPHA formats from those extensions must be emulated with R/RG textures. if (IsLUMAFormat(format)) { result = EmulateLUMAFormat(format); } } } // Emulate RGB10 with RGB10_A2. if (type == GL_UNSIGNED_INT_2_10_10_10_REV && format == GL_RGB && features.emulateRGB10.enabled) { result = GL_RGBA; } return result; } static GLenum GetNativeCompressedFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum format) { GLenum result = format; if (gl::IsETC1Format(format)) { // GL_ETC1_RGB8_OES is not available in any desktop GL extension but the compression // format is forwards compatible so just use the ETC2 format. Pass GL_COMPRESSED_RGB8_ETC2 // as the target format in ES3 and higher because it becomes a core format. if (functions->standard == STANDARD_GL_DESKTOP || functions->isAtLeastGLES(gl::Version(3, 0))) { result = GL_COMPRESSED_RGB8_ETC2; } } return result; } static GLenum GetNativeType(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum format, GLenum type) { GLenum result = type; if (functions->standard == STANDARD_GL_DESKTOP) { if (type == GL_HALF_FLOAT_OES) { // The enums differ for the OES half float extensions and desktop GL spec. // Update it. result = GL_HALF_FLOAT; } } else if (functions->isAtLeastGLES(gl::Version(3, 0))) { if (type == GL_HALF_FLOAT_OES) { if (!IsLUMAFormat(format) || !functions->hasGLESExtension("GL_OES_texture_half_float")) { // In ES3, the luminance formats come from OES_texture_half_float, which uses // HALF_FLOAT_OES. Other formats (like RGBA) use HALF_FLOAT (non-OES) in ES3. // If they're emulated (see above), use HALF_FLOAT. result = GL_HALF_FLOAT; } } } else if (functions->isAtLeastGLES(gl::Version(2, 0))) { // On ES2, convert GL_HALF_FLOAT to GL_HALF_FLOAT_OES as a convenience for internal // functions. It should not be possible to get here by a normal glTexImage2D call. if (type == GL_HALF_FLOAT) { ASSERT(functions->hasGLESExtension("GL_OES_texture_half_float")); result = GL_HALF_FLOAT_OES; } } return result; } static GLenum GetNativeReadType(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum type) { GLenum result = type; if (functions->standard == STANDARD_GL_DESKTOP || functions->isAtLeastGLES(gl::Version(3, 0))) { if (type == GL_HALF_FLOAT_OES) { // The enums differ for the OES half float extensions and desktop GL spec. Update it. result = GL_HALF_FLOAT; } } return result; } static GLenum GetNativeReadFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum attachmentReadFormat, GLenum format, GLenum type) { GLenum result = format; if (features.readPixelsUsingImplementationColorReadFormatForNorm16.enabled && type == GL_UNSIGNED_SHORT && format == GL_RGBA && (attachmentReadFormat == GL_RED || attachmentReadFormat == GL_RG)) { result = attachmentReadFormat; } return result; } TexImageFormat GetTexImageFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum internalFormat, GLenum format, GLenum type) { TexImageFormat result; result.internalFormat = GetNativeInternalFormat( functions, features, gl::GetInternalFormatInfo(internalFormat, type)); result.format = GetNativeFormat(functions, features, format, type); result.type = GetNativeType(functions, features, format, type); return result; } TexSubImageFormat GetTexSubImageFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum format, GLenum type) { TexSubImageFormat result; result.format = GetNativeFormat(functions, features, format, type); result.type = GetNativeType(functions, features, format, type); return result; } CompressedTexImageFormat GetCompressedTexImageFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum internalFormat) { CompressedTexImageFormat result; result.internalFormat = GetNativeCompressedFormat(functions, features, internalFormat); return result; } CompressedTexSubImageFormat GetCompressedSubTexImageFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum format) { CompressedTexSubImageFormat result; result.format = GetNativeCompressedFormat(functions, features, format); return result; } CopyTexImageImageFormat GetCopyTexImageImageFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum internalFormat, GLenum framebufferType) { CopyTexImageImageFormat result; result.internalFormat = GetNativeInternalFormat( functions, features, gl::GetInternalFormatInfo(internalFormat, framebufferType)); return result; } TexStorageFormat GetTexStorageFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum internalFormat) { TexStorageFormat result; // TexStorage entrypoints accept both compressed and uncompressed formats. // All compressed formats are sized. gl::InternalFormat sizedFormatInfo = gl::GetSizedInternalFormatInfo(internalFormat); if (sizedFormatInfo.compressed) { result.internalFormat = GetNativeCompressedFormat(functions, features, internalFormat); } else { result.internalFormat = GetNativeInternalFormat(functions, features, sizedFormatInfo); } return result; } RenderbufferFormat GetRenderbufferFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum internalFormat) { RenderbufferFormat result; result.internalFormat = GetNativeInternalFormat(functions, features, gl::GetSizedInternalFormatInfo(internalFormat)); return result; } ReadPixelsFormat GetReadPixelsFormat(const FunctionsGL *functions, const angle::FeaturesGL &features, GLenum attachmentReadFormat, GLenum format, GLenum type) { ReadPixelsFormat result; result.format = GetNativeReadFormat(functions, features, attachmentReadFormat, format, type); result.type = GetNativeReadType(functions, features, type); return result; } } // namespace nativegl } // namespace rx