| // Copyright 2020 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/Subresource.h" |
| |
| #include "common/Assert.h" |
| #include "dawn_native/Format.h" |
| |
| namespace dawn_native { |
| |
| Aspect ConvertSingleAspect(const Format& format, wgpu::TextureAspect aspect) { |
| Aspect aspectMask = ConvertAspect(format, aspect); |
| ASSERT(HasOneBit(aspectMask)); |
| return aspectMask; |
| } |
| |
| Aspect ConvertAspect(const Format& format, wgpu::TextureAspect aspect) { |
| Aspect aspectMask = TryConvertAspect(format, aspect); |
| ASSERT(aspectMask != Aspect::None); |
| return aspectMask; |
| } |
| |
| Aspect TryConvertAspect(const Format& format, wgpu::TextureAspect aspect) { |
| switch (aspect) { |
| case wgpu::TextureAspect::All: |
| return format.aspects; |
| case wgpu::TextureAspect::DepthOnly: |
| return format.aspects & Aspect::Depth; |
| case wgpu::TextureAspect::StencilOnly: |
| return format.aspects & Aspect::Stencil; |
| } |
| } |
| |
| uint8_t GetAspectIndex(Aspect aspect) { |
| ASSERT(HasOneBit(aspect)); |
| switch (aspect) { |
| case Aspect::Color: |
| return 0; |
| case Aspect::Depth: |
| return 0; |
| case Aspect::Stencil: |
| return 1; |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| uint8_t GetAspectCount(Aspect aspects) { |
| // TODO(cwallez@chromium.org): This should use popcount once Dawn has such a function. |
| // Note that we can't do a switch because compilers complain that Depth | Stencil is not |
| // a valid enum value. |
| if (aspects == Aspect::Color || aspects == Aspect::Depth) { |
| return 1; |
| } else { |
| ASSERT(aspects == (Aspect::Depth | Aspect::Stencil)); |
| return 2; |
| } |
| } |
| |
| // static |
| SubresourceRange SubresourceRange::SingleMipAndLayer(uint32_t baseMipLevel, |
| uint32_t baseArrayLayer, |
| Aspect aspects) { |
| return {baseMipLevel, 1, baseArrayLayer, 1, aspects}; |
| } |
| |
| } // namespace dawn_native |