| // Copyright 2019 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn/native/opengl/GLFormat.h" |
| |
| namespace dawn::native::opengl { |
| |
| GLFormatTable BuildGLFormatTable(GLenum internalFormatForBGRA) { |
| GLFormatTable table; |
| |
| using Type = GLFormat::ComponentType; |
| |
| auto AddFormat = [&table](wgpu::TextureFormat dawnFormat, GLenum internalFormat, GLenum format, |
| GLenum type, Type componentType) { |
| FormatIndex index = ComputeFormatIndex(dawnFormat); |
| ASSERT(index < table.size()); |
| |
| table[index].internalFormat = internalFormat; |
| table[index].format = format; |
| table[index].type = type; |
| table[index].componentType = componentType; |
| table[index].isSupportedOnBackend = true; |
| }; |
| |
| // It's dangerous to go alone, take this: |
| // |
| // [ANGLE's formatutils.cpp] |
| // [ANGLE's formatutilsgl.cpp] |
| // |
| // The format tables in these files are extremely complete and the best reference on GL |
| // format support, enums, etc. |
| |
| // clang-format off |
| |
| // 1 byte color formats |
| AddFormat(wgpu::TextureFormat::R8Unorm, GL_R8, GL_RED, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::R8Snorm, GL_R8_SNORM, GL_RED, GL_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::R8Uint, GL_R8UI, GL_RED_INTEGER, GL_UNSIGNED_BYTE, Type::Uint); |
| AddFormat(wgpu::TextureFormat::R8Sint, GL_R8I, GL_RED_INTEGER, GL_BYTE, Type::Int); |
| |
| // 2 bytes color formats |
| AddFormat(wgpu::TextureFormat::R16Uint, GL_R16UI, GL_RED_INTEGER, GL_UNSIGNED_SHORT, Type::Uint); |
| AddFormat(wgpu::TextureFormat::R16Sint, GL_R16I, GL_RED_INTEGER, GL_SHORT, Type::Int); |
| AddFormat(wgpu::TextureFormat::R16Float, GL_R16F, GL_RED, GL_HALF_FLOAT, Type::Float); |
| AddFormat(wgpu::TextureFormat::RG8Unorm, GL_RG8, GL_RG, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::RG8Snorm, GL_RG8_SNORM, GL_RG, GL_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::RG8Uint, GL_RG8UI, GL_RG_INTEGER, GL_UNSIGNED_BYTE, Type::Uint); |
| AddFormat(wgpu::TextureFormat::RG8Sint, GL_RG8I, GL_RG_INTEGER, GL_BYTE, Type::Int); |
| |
| // 4 bytes color formats |
| AddFormat(wgpu::TextureFormat::R32Uint, GL_R32UI, GL_RED_INTEGER, GL_UNSIGNED_INT, Type::Uint); |
| AddFormat(wgpu::TextureFormat::R32Sint, GL_R32I, GL_RED_INTEGER, GL_INT, Type::Int); |
| AddFormat(wgpu::TextureFormat::R32Float, GL_R32F, GL_RED, GL_FLOAT, Type::Float); |
| AddFormat(wgpu::TextureFormat::RG16Uint, GL_RG16UI, GL_RG_INTEGER, GL_UNSIGNED_SHORT, Type::Uint); |
| AddFormat(wgpu::TextureFormat::RG16Sint, GL_RG16I, GL_RG_INTEGER, GL_SHORT, Type::Int); |
| AddFormat(wgpu::TextureFormat::RG16Float, GL_RG16F, GL_RG, GL_HALF_FLOAT, Type::Float); |
| AddFormat(wgpu::TextureFormat::RGBA8Unorm, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::RGBA8UnormSrgb, GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::RGBA8Snorm, GL_RGBA8_SNORM, GL_RGBA, GL_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::RGBA8Uint, GL_RGBA8UI, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, Type::Uint); |
| AddFormat(wgpu::TextureFormat::RGBA8Sint, GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE, Type::Int); |
| |
| AddFormat(wgpu::TextureFormat::BGRA8Unorm, internalFormatForBGRA, GL_BGRA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::RGB10A2Unorm, GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, Type::Float); |
| AddFormat(wgpu::TextureFormat::RG11B10Ufloat, GL_R11F_G11F_B10F, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, Type::Float); |
| AddFormat(wgpu::TextureFormat::RGB9E5Ufloat, GL_RGB9_E5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, Type::Float); |
| |
| // 8 bytes color formats |
| AddFormat(wgpu::TextureFormat::RG32Uint, GL_RG32UI, GL_RG_INTEGER, GL_UNSIGNED_INT, Type::Uint); |
| AddFormat(wgpu::TextureFormat::RG32Sint, GL_RG32I, GL_RG_INTEGER, GL_INT, Type::Int); |
| AddFormat(wgpu::TextureFormat::RG32Float, GL_RG32F, GL_RG, GL_FLOAT, Type::Float); |
| AddFormat(wgpu::TextureFormat::RGBA16Uint, GL_RGBA16UI, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, Type::Uint); |
| AddFormat(wgpu::TextureFormat::RGBA16Sint, GL_RGBA16I, GL_RGBA_INTEGER, GL_SHORT, Type::Int); |
| AddFormat(wgpu::TextureFormat::RGBA16Float, GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT, Type::Float); |
| |
| // 16 bytes color formats |
| AddFormat(wgpu::TextureFormat::RGBA32Uint, GL_RGBA32UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT, Type::Uint); |
| AddFormat(wgpu::TextureFormat::RGBA32Sint, GL_RGBA32I, GL_RGBA_INTEGER, GL_INT, Type::Int); |
| AddFormat(wgpu::TextureFormat::RGBA32Float, GL_RGBA32F, GL_RGBA, GL_FLOAT, Type::Float); |
| |
| // Depth stencil formats |
| AddFormat(wgpu::TextureFormat::Depth32Float, GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT, Type::DepthStencil); |
| AddFormat(wgpu::TextureFormat::Depth24Plus, GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT, Type::DepthStencil); |
| AddFormat(wgpu::TextureFormat::Depth24PlusStencil8, GL_DEPTH32F_STENCIL8, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, Type::DepthStencil); |
| AddFormat(wgpu::TextureFormat::Depth16Unorm, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, Type::DepthStencil); |
| AddFormat(wgpu::TextureFormat::Stencil8, GL_STENCIL_INDEX8, GL_STENCIL, GL_UNSIGNED_BYTE, Type::DepthStencil); |
| |
| // Block compressed formats |
| AddFormat(wgpu::TextureFormat::BC1RGBAUnorm, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC1RGBAUnormSrgb, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC2RGBAUnorm, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC2RGBAUnormSrgb, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC3RGBAUnorm, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC3RGBAUnormSrgb, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC4RSnorm, GL_COMPRESSED_SIGNED_RED_RGTC1, GL_RED, GL_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC4RUnorm, GL_COMPRESSED_RED_RGTC1, GL_RED, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC5RGSnorm, GL_COMPRESSED_SIGNED_RG_RGTC2, GL_RG, GL_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC5RGUnorm, GL_COMPRESSED_RG_RGTC2, GL_RG, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC6HRGBFloat, GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT, GL_RGB, GL_HALF_FLOAT, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC6HRGBUfloat, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT, GL_RGB, GL_HALF_FLOAT, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC7RGBAUnorm, GL_COMPRESSED_RGBA_BPTC_UNORM, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| AddFormat(wgpu::TextureFormat::BC7RGBAUnormSrgb, GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM, GL_RGBA, GL_UNSIGNED_BYTE, Type::Float); |
| |
| // clang-format on |
| |
| return table; |
| } |
| |
| } // namespace dawn::native::opengl |