| // |
| // Copyright (c) 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. |
| // |
| |
| #include "libGLESv2/Caps.h" |
| #include "common/debug.h" |
| #include "common/angleutils.h" |
| |
| #include "angle_gl.h" |
| |
| #include <algorithm> |
| #include <sstream> |
| |
| namespace gl |
| { |
| |
| TextureCaps::TextureCaps() |
| : texturable(false), |
| filterable(false), |
| renderable(false), |
| sampleCounts() |
| { |
| } |
| |
| GLuint TextureCaps::getMaxSamples() const |
| { |
| return !sampleCounts.empty() ? *sampleCounts.rbegin() : 0; |
| } |
| |
| GLuint TextureCaps::getNearestSamples(GLuint requestedSamples) const |
| { |
| if (requestedSamples == 0) |
| { |
| return 0; |
| } |
| |
| for (SupportedSampleSet::const_iterator i = sampleCounts.begin(); i != sampleCounts.end(); i++) |
| { |
| GLuint samples = *i; |
| if (samples >= requestedSamples) |
| { |
| return samples; |
| } |
| } |
| |
| return 0; |
| } |
| |
| void TextureCapsMap::insert(GLenum internalFormat, const TextureCaps &caps) |
| { |
| mCapsMap.insert(std::make_pair(internalFormat, caps)); |
| } |
| |
| void TextureCapsMap::remove(GLenum internalFormat) |
| { |
| InternalFormatToCapsMap::iterator i = mCapsMap.find(internalFormat); |
| if (i != mCapsMap.end()) |
| { |
| mCapsMap.erase(i); |
| } |
| } |
| |
| const TextureCaps &TextureCapsMap::get(GLenum internalFormat) const |
| { |
| static TextureCaps defaultUnsupportedTexture; |
| InternalFormatToCapsMap::const_iterator iter = mCapsMap.find(internalFormat); |
| return (iter != mCapsMap.end()) ? iter->second : defaultUnsupportedTexture; |
| } |
| |
| TextureCapsMap::const_iterator TextureCapsMap::begin() const |
| { |
| return mCapsMap.begin(); |
| } |
| |
| TextureCapsMap::const_iterator TextureCapsMap::end() const |
| { |
| return mCapsMap.end(); |
| } |
| |
| size_t TextureCapsMap::size() const |
| { |
| return mCapsMap.size(); |
| } |
| |
| Extensions::Extensions() |
| : elementIndexUint(false), |
| packedDepthStencil(false), |
| getProgramBinary(false), |
| rgb8rgba8(false), |
| textureFormatBGRA8888(false), |
| readFormatBGRA(false), |
| pixelBufferObject(false), |
| mapBuffer(false), |
| mapBufferRange(false), |
| textureHalfFloat(false), |
| textureHalfFloatLinear(false), |
| textureFloat(false), |
| textureFloatLinear(false), |
| textureRG(false), |
| textureCompressionDXT1(false), |
| textureCompressionDXT3(false), |
| textureCompressionDXT5(false), |
| depthTextures(false), |
| textureNPOT(false), |
| drawBuffers(false), |
| textureStorage(false), |
| textureFilterAnisotropic(false), |
| maxTextureAnisotropy(false), |
| occlusionQueryBoolean(false), |
| fence(false), |
| timerQuery(false), |
| robustness(false), |
| blendMinMax(false), |
| framebufferBlit(false), |
| framebufferMultisample(false), |
| instancedArrays(false), |
| packReverseRowOrder(false), |
| standardDerivatives(false), |
| shaderTextureLOD(false), |
| fragDepth(false), |
| textureUsage(false), |
| translatedShaderSource(false), |
| colorBufferFloat(false) |
| { |
| } |
| |
| static void InsertExtensionString(const std::string &extension, bool supported, std::vector<std::string> *extensionVector) |
| { |
| if (supported) |
| { |
| extensionVector->push_back(extension); |
| } |
| } |
| |
| std::vector<std::string> Extensions::getStrings() const |
| { |
| std::vector<std::string> extensionStrings; |
| |
| // | Extension name | Supported flag | Output vector | |
| InsertExtensionString("GL_OES_element_index_uint", elementIndexUint, &extensionStrings); |
| InsertExtensionString("GL_OES_packed_depth_stencil", packedDepthStencil, &extensionStrings); |
| InsertExtensionString("GL_OES_get_program_binary", getProgramBinary, &extensionStrings); |
| InsertExtensionString("GL_OES_rgb8_rgba8", rgb8rgba8, &extensionStrings); |
| InsertExtensionString("GL_EXT_texture_format_BGRA8888", textureFormatBGRA8888, &extensionStrings); |
| InsertExtensionString("GL_EXT_read_format_bgra", readFormatBGRA, &extensionStrings); |
| InsertExtensionString("GL_NV_pixel_buffer_object", pixelBufferObject, &extensionStrings); |
| InsertExtensionString("GL_OES_mapbuffer", mapBuffer, &extensionStrings); |
| InsertExtensionString("GL_EXT_map_buffer_range", mapBufferRange, &extensionStrings); |
| InsertExtensionString("GL_OES_texture_half_float", textureHalfFloat, &extensionStrings); |
| InsertExtensionString("GL_OES_texture_half_float_linear", textureHalfFloatLinear, &extensionStrings); |
| InsertExtensionString("GL_OES_texture_float", textureFloat, &extensionStrings); |
| InsertExtensionString("GL_OES_texture_float_linear", textureFloatLinear, &extensionStrings); |
| InsertExtensionString("GL_EXT_texture_rg", textureRG, &extensionStrings); |
| InsertExtensionString("GL_EXT_texture_compression_dxt1", textureCompressionDXT1, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_texture_compression_dxt3", textureCompressionDXT3, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_texture_compression_dxt5", textureCompressionDXT5, &extensionStrings); |
| InsertExtensionString("GL_EXT_sRGB", sRGB, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_depth_texture", depthTextures, &extensionStrings); |
| InsertExtensionString("GL_EXT_texture_storage", textureStorage, &extensionStrings); |
| InsertExtensionString("GL_OES_texture_npot", textureNPOT, &extensionStrings); |
| InsertExtensionString("GL_EXT_draw_buffers", drawBuffers, &extensionStrings); |
| InsertExtensionString("GL_EXT_texture_filter_anisotropic", textureFilterAnisotropic, &extensionStrings); |
| InsertExtensionString("GL_EXT_occlusion_query_boolean", occlusionQueryBoolean, &extensionStrings); |
| InsertExtensionString("GL_NV_fence", fence, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_timer_query", timerQuery, &extensionStrings); |
| InsertExtensionString("GL_EXT_robustness", robustness, &extensionStrings); |
| InsertExtensionString("GL_EXT_blend_minmax", blendMinMax, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_framebuffer_blit", framebufferBlit, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_framebuffer_multisample", framebufferMultisample, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_instanced_arrays", instancedArrays, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_pack_reverse_row_order", packReverseRowOrder, &extensionStrings); |
| InsertExtensionString("GL_OES_standard_derivatives", standardDerivatives, &extensionStrings); |
| InsertExtensionString("GL_EXT_shader_texture_lod", shaderTextureLOD, &extensionStrings); |
| InsertExtensionString("GL_EXT_frag_depth", fragDepth, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_texture_usage", textureUsage, &extensionStrings); |
| InsertExtensionString("GL_ANGLE_translated_shader_source", translatedShaderSource, &extensionStrings); |
| InsertExtensionString("GL_EXT_color_buffer_float", colorBufferFloat, &extensionStrings); |
| |
| return extensionStrings; |
| } |
| |
| static bool GetFormatSupport(const TextureCapsMap &textureCaps, const std::vector<GLenum> &requiredFormats, |
| bool requiresFiltering, bool requiresRendering) |
| { |
| for (size_t i = 0; i < requiredFormats.size(); i++) |
| { |
| const TextureCaps &cap = textureCaps.get(requiredFormats[i]); |
| |
| if (requiresFiltering && !cap.filterable) |
| { |
| return false; |
| } |
| |
| if (requiresRendering && !cap.renderable) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| // Checks for GL_OES_rgb8_rgba8 support |
| static bool DetermineRGB8AndRGBA8TextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_RGB8); |
| requiredFormats.push_back(GL_RGBA8); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, true); |
| } |
| |
| // Checks for GL_EXT_texture_format_BGRA8888 support |
| static bool DetermineBGRA8TextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_BGRA8_EXT); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, true); |
| } |
| |
| // Checks for GL_OES_texture_half_float support |
| static bool DetermineHalfFloatTextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_RGB16F); |
| requiredFormats.push_back(GL_RGBA16F); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, false, true); |
| } |
| |
| // Checks for GL_OES_texture_half_float_linear support |
| static bool DetermineHalfFloatTextureFilteringSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_RGB16F); |
| requiredFormats.push_back(GL_RGBA16F); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, false); |
| } |
| |
| // Checks for GL_OES_texture_float support |
| static bool DetermineFloatTextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_RGB32F); |
| requiredFormats.push_back(GL_RGBA32F); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, false, true); |
| } |
| |
| // Checks for GL_OES_texture_float_linear support |
| static bool DetermineFloatTextureFilteringSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_RGB32F); |
| requiredFormats.push_back(GL_RGBA32F); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, false); |
| } |
| |
| // Checks for GL_EXT_texture_rg support |
| static bool DetermineRGTextureSupport(const TextureCapsMap &textureCaps, bool checkHalfFloatFormats, bool checkFloatFormats) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_R8); |
| requiredFormats.push_back(GL_RG8); |
| if (checkHalfFloatFormats) |
| { |
| requiredFormats.push_back(GL_R16F); |
| requiredFormats.push_back(GL_RG16F); |
| } |
| if (checkFloatFormats) |
| { |
| requiredFormats.push_back(GL_R32F); |
| requiredFormats.push_back(GL_RG32F); |
| } |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, false); |
| } |
| |
| // Check for GL_EXT_texture_compression_dxt1 |
| static bool DetermineDXT1TextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_COMPRESSED_RGB_S3TC_DXT1_EXT); |
| requiredFormats.push_back(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, false); |
| } |
| |
| // Check for GL_ANGLE_texture_compression_dxt3 |
| static bool DetermineDXT3TextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, false); |
| } |
| |
| // Check for GL_ANGLE_texture_compression_dxt5 |
| static bool DetermineDXT5TextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, false); |
| } |
| |
| // Check for GL_ANGLE_texture_compression_dxt5 |
| static bool DetermineSRGBTextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFilterFormats; |
| requiredFilterFormats.push_back(GL_SRGB8); |
| requiredFilterFormats.push_back(GL_SRGB8_ALPHA8); |
| |
| std::vector<GLenum> requiredRenderFormats; |
| requiredRenderFormats.push_back(GL_SRGB8_ALPHA8); |
| |
| return GetFormatSupport(textureCaps, requiredFilterFormats, true, false) && |
| GetFormatSupport(textureCaps, requiredRenderFormats, false, true); |
| } |
| |
| // Check for GL_ANGLE_depth_texture |
| static bool DetermineDepthTextureSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_DEPTH_COMPONENT16); |
| requiredFormats.push_back(GL_DEPTH_COMPONENT32_OES); |
| requiredFormats.push_back(GL_DEPTH24_STENCIL8_OES); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, true, true); |
| } |
| |
| // Check for GL_EXT_color_buffer_float |
| static bool DetermineColorBufferFloatSupport(const TextureCapsMap &textureCaps) |
| { |
| std::vector<GLenum> requiredFormats; |
| requiredFormats.push_back(GL_R16F); |
| requiredFormats.push_back(GL_RG16F); |
| requiredFormats.push_back(GL_RGBA16F); |
| requiredFormats.push_back(GL_R32F); |
| requiredFormats.push_back(GL_RG32F); |
| requiredFormats.push_back(GL_RGBA32F); |
| requiredFormats.push_back(GL_R11F_G11F_B10F); |
| |
| return GetFormatSupport(textureCaps, requiredFormats, false, true); |
| } |
| |
| void Extensions::setTextureExtensionSupport(const TextureCapsMap &textureCaps) |
| { |
| rgb8rgba8 = DetermineRGB8AndRGBA8TextureSupport(textureCaps); |
| textureFormatBGRA8888 = DetermineBGRA8TextureSupport(textureCaps); |
| textureHalfFloat = DetermineHalfFloatTextureSupport(textureCaps); |
| textureHalfFloatLinear = DetermineHalfFloatTextureFilteringSupport(textureCaps); |
| textureFloat = DetermineFloatTextureSupport(textureCaps); |
| textureFloatLinear = DetermineFloatTextureFilteringSupport(textureCaps); |
| textureRG = DetermineRGTextureSupport(textureCaps, textureHalfFloat, textureFloat); |
| textureCompressionDXT1 = DetermineDXT1TextureSupport(textureCaps); |
| textureCompressionDXT3 = DetermineDXT3TextureSupport(textureCaps); |
| textureCompressionDXT5 = DetermineDXT5TextureSupport(textureCaps); |
| sRGB = DetermineSRGBTextureSupport(textureCaps); |
| depthTextures = DetermineDepthTextureSupport(textureCaps); |
| colorBufferFloat = DetermineColorBufferFloatSupport(textureCaps); |
| } |
| |
| Caps::Caps() |
| : maxElementIndex(0), |
| max3DTextureSize(0), |
| max2DTextureSize(0), |
| maxArrayTextureLayers(0), |
| maxLODBias(0), |
| maxCubeMapTextureSize(0), |
| maxRenderbufferSize(0), |
| maxDrawBuffers(0), |
| maxColorAttachments(0), |
| maxViewportWidth(0), |
| maxViewportHeight(0), |
| minAliasedPointSize(0), |
| maxAliasedPointSize(0), |
| minAliasedLineWidth(0), |
| // Table 6.29 |
| maxElementsIndices(0), |
| maxElementsVertices(0), |
| maxServerWaitTimeout(0), |
| // Table 6.31 |
| maxVertexAttributes(0), |
| maxVertexUniformComponents(0), |
| maxVertexUniformVectors(0), |
| maxVertexUniformBlocks(0), |
| maxVertexOutputComponents(0), |
| maxVertexTextureImageUnits(0), |
| // Table 6.32 |
| maxFragmentUniformComponents(0), |
| maxFragmentUniformVectors(0), |
| maxFragmentUniformBlocks(0), |
| maxFragmentInputComponents(0), |
| maxTextureImageUnits(0), |
| minProgramTexelOffset(0), |
| maxProgramTexelOffset(0), |
| |
| maxUniformBufferBindings(0), |
| maxUniformBlockSize(0), |
| uniformBufferOffsetAlignment(0), |
| maxCombinedUniformBlocks(0), |
| maxCombinedVertexUniformComponents(0), |
| maxCombinedFragmentUniformComponents(0), |
| maxVaryingComponents(0), |
| maxVaryingVectors(0), |
| maxCombinedTextureImageUnits(0), |
| |
| maxTransformFeedbackInterleavedComponents(0), |
| maxTransformFeedbackSeparateAttributes(0), |
| maxTransformFeedbackSeparateComponents(0) |
| { |
| } |
| |
| } |