| /* |
| * Copyright 2019 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "src/gpu/dawn/GrDawnUtil.h" |
| |
| size_t GrDawnBytesPerBlock(wgpu::TextureFormat format) { |
| switch (format) { |
| case wgpu::TextureFormat::RGBA8Unorm: |
| case wgpu::TextureFormat::BGRA8Unorm: |
| return 4; |
| case wgpu::TextureFormat::R8Unorm: |
| return 1; |
| case wgpu::TextureFormat::Depth24PlusStencil8: |
| return 4; |
| default: |
| SkUNREACHABLE; |
| } |
| } |
| |
| int GrDawnFormatStencilBits(wgpu::TextureFormat format) { |
| switch (format) { |
| case wgpu::TextureFormat::RGBA8Unorm: |
| case wgpu::TextureFormat::BGRA8Unorm: |
| case wgpu::TextureFormat::R8Unorm: |
| return 0; |
| case wgpu::TextureFormat::Depth24PlusStencil8: |
| return 8; |
| default: |
| SkUNREACHABLE; |
| } |
| } |
| |
| bool GrDawnFormatIsRenderable(wgpu::TextureFormat format) { |
| // For now, all the formats above are renderable. If a non-renderable format is added |
| // (see dawn/src/dawn_native/Format.cpp), an exception should be added here. |
| return true; |
| } |
| |
| bool GrColorTypeToDawnFormat(GrColorType ct, wgpu::TextureFormat* format) { |
| switch (ct) { |
| case GrColorType::kRGBA_8888: |
| *format = wgpu::TextureFormat::RGBA8Unorm; |
| return true; |
| case GrColorType::kBGRA_8888: |
| *format = wgpu::TextureFormat::BGRA8Unorm; |
| return true; |
| case GrColorType::kAlpha_8: |
| case GrColorType::kGray_8: |
| *format = wgpu::TextureFormat::R8Unorm; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| bool GrDawnFormatToGrColorType(wgpu::TextureFormat format, GrColorType* colorType) { |
| switch (format) { |
| case wgpu::TextureFormat::RGBA8Unorm: |
| *colorType = GrColorType::kRGBA_8888; |
| return true; |
| case wgpu::TextureFormat::BGRA8Unorm: |
| *colorType = GrColorType::kBGRA_8888; |
| return true; |
| case wgpu::TextureFormat::R8Unorm: |
| *colorType = GrColorType::kR_8; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| size_t GrDawnRoundRowBytes(size_t rowBytes) { |
| // Dawn requires that rowBytes be a multiple of 256. (This is actually imposed by D3D12.) |
| return (rowBytes + 0xFF) & ~0xFF; |
| } |
| |
| #if defined(SK_DEBUG) || GR_TEST_UTILS |
| const char* GrDawnFormatToStr(wgpu::TextureFormat format) { |
| switch (format) { |
| case wgpu::TextureFormat::RGBA8Unorm: |
| return "RGBA8Unorm"; |
| case wgpu::TextureFormat::BGRA8Unorm: |
| return "BGRA8Unorm"; |
| case wgpu::TextureFormat::R8Unorm: |
| return "R8Unorm"; |
| case wgpu::TextureFormat::Depth24PlusStencil8: |
| return "Depth24PlusStencil8"; |
| default: |
| SkUNREACHABLE; |
| } |
| } |
| #endif |