| // Copyright 2018 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. |
| |
| #ifndef SRC_DAWN_NATIVE_DAWN_PLATFORM_H_ |
| #define SRC_DAWN_NATIVE_DAWN_PLATFORM_H_ |
| |
| // Use webgpu_cpp to have the enum and bitfield definitions |
| #include "dawn/webgpu_cpp.h" |
| |
| #include "dawn/native/dawn_platform_autogen.h" |
| |
| namespace dawn::native { |
| |
| // kEnumCount is a constant specifying the number of enums in a WebGPU enum type, |
| // if the enums are contiguous, making it suitable for iteration. |
| // It is defined in dawn_platform_autogen.h |
| template <typename T> |
| constexpr uint32_t kEnumCount = EnumCount<T>::value; |
| |
| // Extra buffer usages |
| // Add an extra buffer usage and an extra binding type for binding the buffers with QueryResolve |
| // usage as storage buffer in the internal pipeline. |
| static constexpr wgpu::BufferUsage kInternalStorageBuffer = |
| static_cast<wgpu::BufferUsage>(0x40000000); |
| |
| // Add an extra buffer usage (readonly storage buffer usage) for render pass resource tracking |
| static constexpr wgpu::BufferUsage kReadOnlyStorageBuffer = |
| static_cast<wgpu::BufferUsage>(0x80000000); |
| |
| static constexpr wgpu::BufferUsage kAllInternalBufferUsages = |
| kInternalStorageBuffer | kReadOnlyStorageBuffer; |
| |
| // Extra texture usages |
| // Add an extra texture usage for textures that will be presented, for use in backends |
| // that needs to transition to present usage. |
| static constexpr wgpu::TextureUsage kPresentTextureUsage = |
| static_cast<wgpu::TextureUsage>(0x20000000); |
| |
| // Add an extra texture usage (readonly render attachment usage) for render pass resource |
| // tracking |
| static constexpr wgpu::TextureUsage kReadOnlyRenderAttachment = |
| static_cast<wgpu::TextureUsage>(0x40000000); |
| |
| // Internal usage to help tracking when a subresource is used as render attachment usage |
| // more than once in a render pass. |
| static constexpr wgpu::TextureUsage kAgainAsRenderAttachment = |
| static_cast<wgpu::TextureUsage>(0x80000001); |
| |
| // Add an extra texture usage (load resolve texture to MSAA) for render pass resource tracking |
| static constexpr wgpu::TextureUsage kResolveAttachmentLoadingUsage = |
| static_cast<wgpu::TextureUsage>(0x10000000); |
| |
| static constexpr wgpu::BufferBindingType kInternalStorageBufferBinding = |
| static_cast<wgpu::BufferBindingType>(0xFFFFFFFF); |
| |
| // Extra TextureSampleType for sampling from a resolve attachment. |
| static constexpr wgpu::TextureSampleType kInternalResolveAttachmentSampleType = |
| static_cast<wgpu::TextureSampleType>(0xFFFFFFFF); |
| } // namespace dawn::native |
| |
| #endif // SRC_DAWN_NATIVE_DAWN_PLATFORM_H_ |