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Stencil8 support fixups 

Addressing issues that showed up after the initial stencil8 CL landed.

D3D12:
 - Selecting the `all` aspect of a `stencil8` texture was ASSERTing

Metal:
 - Using the `stencil` aspect of a `stencil8` texture was hitting an
   UNREACHABLE().

Bug: dawn:666
Change-Id: Ic2931dbb915e109727ca24e3216a661fba84e508
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/85021
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Brandon Jones <bajones@chromium.org>
This commit is contained in:
Brandon Jones 2022-03-29 23:01:54 +00:00 committed by Dawn LUCI CQ
parent 431926670f
commit bf0f2c1849
2 changed files with 17 additions and 2 deletions
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16
src/dawn/native/d3d12/TextureD3D12.cpp
View File

@ -1184,7 +1184,21 @@ namespace dawn::native::d3d12 {
case wgpu::TextureFormat::Depth16Unorm:
mSrvDesc.Format = DXGI_FORMAT_R16_UNORM;
break;
case wgpu::TextureFormat::Stencil8:
case wgpu::TextureFormat::Stencil8: {
// Stencil8 is always backed by a DXGI_FORMAT_R24G8_TYPELESS texture in D3D12,
// so always treat it as if the StencilOnly aspect of a Depth24UnormStencil8 was
// selected.
planeSlice = 1;
mSrvDesc.Format = DXGI_FORMAT_X24_TYPELESS_G8_UINT;
// Stencil is accessed using the .g component in the shader.
// Map it to the zeroth component to match other APIs.
mSrvDesc.Shader4ComponentMapping = D3D12_ENCODE_SHADER_4_COMPONENT_MAPPING(
D3D12_SHADER_COMPONENT_MAPPING_FROM_MEMORY_COMPONENT_1,
D3D12_SHADER_COMPONENT_MAPPING_FORCE_VALUE_0,
D3D12_SHADER_COMPONENT_MAPPING_FORCE_VALUE_0,
D3D12_SHADER_COMPONENT_MAPPING_FORCE_VALUE_1);
break;
}
case wgpu::TextureFormat::Depth24UnormStencil8:
switch (descriptor->aspect) {
case wgpu::TextureAspect::DepthOnly:

3
src/dawn/native/metal/TextureMTL.mm
View File

@ -1060,7 +1060,8 @@ namespace dawn::native::metal {
}
} else {
MTLPixelFormat format = MetalPixelFormat(descriptor->format);
if (descriptor->aspect == wgpu::TextureAspect::StencilOnly) {
if (descriptor->aspect == wgpu::TextureAspect::StencilOnly &&
format != MTLPixelFormatStencil8) {
if (@available(macOS 10.12, iOS 10.0, *)) {
if (format == MTLPixelFormatDepth32Float_Stencil8) {
format = MTLPixelFormatX32_Stencil8;