| // 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/Format.h" |
| |
| #include "dawn_native/Device.h" |
| #include "dawn_native/Extensions.h" |
| #include "dawn_native/Texture.h" |
| |
| #include <bitset> |
| |
| namespace dawn_native { |
| |
| namespace { |
| |
| static const AspectInfo kStencil8AspectInfo = {{1, 1, 1}, |
| wgpu::TextureComponentType::Uint, |
| ComponentTypeBit::Uint}; |
| } |
| |
| // Format |
| |
| ComponentTypeBit ToComponentTypeBit(wgpu::TextureComponentType type) { |
| switch (type) { |
| case wgpu::TextureComponentType::Float: |
| case wgpu::TextureComponentType::Sint: |
| case wgpu::TextureComponentType::Uint: |
| case wgpu::TextureComponentType::DepthComparison: |
| // When the compiler complains that you need to add a case statement here, please |
| // also add a corresponding static assert below! |
| break; |
| } |
| |
| // Check that ComponentTypeBit bits are in the same position / order as the respective |
| // wgpu::TextureComponentType value. |
| static_assert(ComponentTypeBit::Float == |
| static_cast<ComponentTypeBit>( |
| 1 << static_cast<uint32_t>(wgpu::TextureComponentType::Float)), |
| ""); |
| static_assert(ComponentTypeBit::Uint == |
| static_cast<ComponentTypeBit>( |
| 1 << static_cast<uint32_t>(wgpu::TextureComponentType::Uint)), |
| ""); |
| static_assert(ComponentTypeBit::Sint == |
| static_cast<ComponentTypeBit>( |
| 1 << static_cast<uint32_t>(wgpu::TextureComponentType::Sint)), |
| ""); |
| static_assert( |
| ComponentTypeBit::DepthComparison == |
| static_cast<ComponentTypeBit>( |
| 1 << static_cast<uint32_t>(wgpu::TextureComponentType::DepthComparison)), |
| ""); |
| return static_cast<ComponentTypeBit>(1 << static_cast<uint32_t>(type)); |
| } |
| |
| bool Format::IsColor() const { |
| return aspects == Aspect::Color; |
| } |
| |
| bool Format::HasDepth() const { |
| return (aspects & Aspect::Depth) != 0; |
| } |
| |
| bool Format::HasStencil() const { |
| return (aspects & Aspect::Stencil) != 0; |
| } |
| |
| bool Format::HasDepthOrStencil() const { |
| return (aspects & (Aspect::Depth | Aspect::Stencil)) != 0; |
| } |
| |
| const AspectInfo& Format::GetAspectInfo(wgpu::TextureAspect aspect) const { |
| return GetAspectInfo(ConvertAspect(*this, aspect)); |
| } |
| |
| const AspectInfo& Format::GetAspectInfo(Aspect aspect) const { |
| ASSERT(HasOneBit(aspect)); |
| ASSERT(aspects & aspect); |
| |
| // The stencil aspect is the only aspect that's not the first aspect. Since it is always the |
| // same aspect information, special case it to return a constant AspectInfo. |
| if (aspect == Aspect::Stencil) { |
| return kStencil8AspectInfo; |
| } else { |
| return firstAspect; |
| } |
| } |
| |
| size_t Format::GetIndex() const { |
| return ComputeFormatIndex(format); |
| } |
| |
| // Implementation details of the format table of the DeviceBase |
| |
| // For the enum for formats are packed but this might change when we have a broader extension |
| // mechanism for webgpu.h. Formats start at 1 because 0 is the undefined format. |
| size_t ComputeFormatIndex(wgpu::TextureFormat format) { |
| // This takes advantage of overflows to make the index of TextureFormat::Undefined outside |
| // of the range of the FormatTable. |
| static_assert(static_cast<uint32_t>(wgpu::TextureFormat::Undefined) - 1 > kKnownFormatCount, |
| ""); |
| return static_cast<size_t>(static_cast<uint32_t>(format) - 1); |
| } |
| |
| FormatTable BuildFormatTable(const DeviceBase* device) { |
| FormatTable table; |
| std::bitset<kKnownFormatCount> formatsSet; |
| |
| using Type = wgpu::TextureComponentType; |
| |
| auto AddFormat = [&table, &formatsSet](Format format) { |
| size_t index = ComputeFormatIndex(format.format); |
| ASSERT(index < table.size()); |
| |
| // This checks that each format is set at most once, the first part of checking that all |
| // formats are set exactly once. |
| ASSERT(!formatsSet[index]); |
| |
| table[index] = format; |
| formatsSet.set(index); |
| }; |
| |
| auto AddColorFormat = [&AddFormat](wgpu::TextureFormat format, bool renderable, |
| bool supportsStorageUsage, uint32_t byteSize, |
| Type type) { |
| Format internalFormat; |
| internalFormat.format = format; |
| internalFormat.isRenderable = renderable; |
| internalFormat.isCompressed = false; |
| internalFormat.isSupported = true; |
| internalFormat.supportsStorageUsage = supportsStorageUsage; |
| internalFormat.aspects = Aspect::Color; |
| internalFormat.firstAspect.block.byteSize = byteSize; |
| internalFormat.firstAspect.block.width = 1; |
| internalFormat.firstAspect.block.height = 1; |
| internalFormat.firstAspect.baseType = type; |
| internalFormat.firstAspect.supportedComponentTypes = ToComponentTypeBit(type); |
| AddFormat(internalFormat); |
| }; |
| |
| auto AddDepthStencilFormat = [&AddFormat](wgpu::TextureFormat format, Aspect aspects, |
| uint32_t byteSize, bool isDepthSampleable) { |
| Format internalFormat; |
| internalFormat.format = format; |
| internalFormat.isRenderable = true; |
| internalFormat.isCompressed = false; |
| internalFormat.isSupported = true; |
| internalFormat.supportsStorageUsage = false; |
| internalFormat.aspects = aspects; |
| internalFormat.firstAspect.block.byteSize = byteSize; |
| internalFormat.firstAspect.block.width = 1; |
| internalFormat.firstAspect.block.height = 1; |
| internalFormat.firstAspect.baseType = wgpu::TextureComponentType::Float; |
| if (isDepthSampleable) { |
| internalFormat.firstAspect.supportedComponentTypes = |
| ComponentTypeBit::Float | ComponentTypeBit::DepthComparison; |
| } else { |
| internalFormat.firstAspect.supportedComponentTypes = ComponentTypeBit::None; |
| } |
| AddFormat(internalFormat); |
| }; |
| |
| auto AddCompressedFormat = [&AddFormat](wgpu::TextureFormat format, uint32_t byteSize, |
| uint32_t width, uint32_t height, bool isSupported) { |
| Format internalFormat; |
| internalFormat.format = format; |
| internalFormat.isRenderable = false; |
| internalFormat.isCompressed = true; |
| internalFormat.isSupported = isSupported; |
| internalFormat.supportsStorageUsage = false; |
| internalFormat.aspects = Aspect::Color; |
| internalFormat.firstAspect.block.byteSize = byteSize; |
| internalFormat.firstAspect.block.width = width; |
| internalFormat.firstAspect.block.height = height; |
| internalFormat.firstAspect.baseType = wgpu::TextureComponentType::Float; |
| internalFormat.firstAspect.supportedComponentTypes = ComponentTypeBit::Float; |
| AddFormat(internalFormat); |
| }; |
| |
| // clang-format off |
| |
| // 1 byte color formats |
| AddColorFormat(wgpu::TextureFormat::R8Unorm, true, false, 1, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::R8Snorm, false, false, 1, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::R8Uint, true, false, 1, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::R8Sint, true, false, 1, Type::Sint); |
| |
| // 2 bytes color formats |
| AddColorFormat(wgpu::TextureFormat::R16Uint, true, false, 2, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::R16Sint, true, false, 2, Type::Sint); |
| AddColorFormat(wgpu::TextureFormat::R16Float, true, false, 2, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RG8Unorm, true, false, 2, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RG8Snorm, false, false, 2, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RG8Uint, true, false, 2, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::RG8Sint, true, false, 2, Type::Sint); |
| |
| // 4 bytes color formats |
| AddColorFormat(wgpu::TextureFormat::R32Uint, true, true, 4, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::R32Sint, true, true, 4, Type::Sint); |
| AddColorFormat(wgpu::TextureFormat::R32Float, true, true, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RG16Uint, true, false, 4, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::RG16Sint, true, false, 4, Type::Sint); |
| AddColorFormat(wgpu::TextureFormat::RG16Float, true, false, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RGBA8Unorm, true, true, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RGBA8UnormSrgb, true, false, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RGBA8Snorm, false, true, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RGBA8Uint, true, true, 4, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::RGBA8Sint, true, true, 4, Type::Sint); |
| AddColorFormat(wgpu::TextureFormat::BGRA8Unorm, true, false, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::BGRA8UnormSrgb, true, false, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RGB10A2Unorm, true, false, 4, Type::Float); |
| |
| AddColorFormat(wgpu::TextureFormat::RG11B10Ufloat, false, false, 4, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RGB9E5Ufloat, false, false, 4, Type::Float); |
| |
| // 8 bytes color formats |
| AddColorFormat(wgpu::TextureFormat::RG32Uint, true, true, 8, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::RG32Sint, true, true, 8, Type::Sint); |
| AddColorFormat(wgpu::TextureFormat::RG32Float, true, true, 8, Type::Float); |
| AddColorFormat(wgpu::TextureFormat::RGBA16Uint, true, true, 8, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::RGBA16Sint, true, true, 8, Type::Sint); |
| AddColorFormat(wgpu::TextureFormat::RGBA16Float, true, true, 8, Type::Float); |
| |
| // 16 bytes color formats |
| AddColorFormat(wgpu::TextureFormat::RGBA32Uint, true, true, 16, Type::Uint); |
| AddColorFormat(wgpu::TextureFormat::RGBA32Sint, true, true, 16, Type::Sint); |
| AddColorFormat(wgpu::TextureFormat::RGBA32Float, true, true, 16, Type::Float); |
| |
| // Depth-stencil formats |
| AddDepthStencilFormat(wgpu::TextureFormat::Depth32Float, Aspect::Depth, 4, true); |
| AddDepthStencilFormat(wgpu::TextureFormat::Depth24Plus, Aspect::Depth, 4, false); |
| // TODO(cwallez@chromium.org): It isn't clear if this format should be copyable |
| // because its size isn't well defined, is it 4, 5 or 8? |
| AddDepthStencilFormat(wgpu::TextureFormat::Depth24PlusStencil8, |
| Aspect::Depth | Aspect::Stencil, 4, false); |
| |
| // BC compressed formats |
| bool isBCFormatSupported = device->IsExtensionEnabled(Extension::TextureCompressionBC); |
| AddCompressedFormat(wgpu::TextureFormat::BC1RGBAUnorm, 8, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC1RGBAUnormSrgb, 8, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC4RSnorm, 8, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC4RUnorm, 8, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC2RGBAUnorm, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC2RGBAUnormSrgb, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC3RGBAUnorm, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC3RGBAUnormSrgb, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC5RGSnorm, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC5RGUnorm, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC6HRGBFloat, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC6HRGBUfloat, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC7RGBAUnorm, 16, 4, 4, isBCFormatSupported); |
| AddCompressedFormat(wgpu::TextureFormat::BC7RGBAUnormSrgb, 16, 4, 4, isBCFormatSupported); |
| |
| // clang-format on |
| |
| // This checks that each format is set at least once, the second part of checking that all |
| // formats are checked exactly once. |
| ASSERT(formatsSet.all()); |
| |
| return table; |
| } |
| |
| } // namespace dawn_native |
