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Add validation on blend factors and blend operations 

This patch adds validations on blend factors and blend
operations according to the latest WebGPU SPEC:
If component.operation is "min" or "max":
component.srcFactor and component.dstFactor must both
be "one".

BUG=dawn:1257
TEST=dawn_unittests

Change-Id: Id17c06044900eb0fa8d2ebab6fd3132f9deb157a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/76480
Reviewed-by: Loko Kung <lokokung@google.com>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
This commit is contained in:
Jiawei Shao 2022-01-21 02:05:47 +00:00 committed by Dawn LUCI CQ
parent 18bad60adf
commit 3619a2b017
2 changed files with 63 additions and 0 deletions
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15
src/dawn_native/RenderPipeline.cpp
View File

@ -317,6 +317,18 @@ namespace dawn::native {
return {};
}
MaybeError ValidateBlendComponent(BlendComponent blendComponent) {
if (blendComponent.operation == wgpu::BlendOperation::Min ||
blendComponent.operation == wgpu::BlendOperation::Max) {
DAWN_INVALID_IF(blendComponent.srcFactor != wgpu::BlendFactor::One ||
blendComponent.dstFactor != wgpu::BlendFactor::One,
"Blend factor is not %s when blend operation is %s.",
wgpu::BlendFactor::One, blendComponent.operation);
}
return {};
}
MaybeError ValidateBlendState(DeviceBase* device, const BlendState* descriptor) {
DAWN_TRY(ValidateBlendOperation(descriptor->alpha.operation));
DAWN_TRY(ValidateBlendFactor(descriptor->alpha.srcFactor));
@ -324,6 +336,9 @@ namespace dawn::native {
DAWN_TRY(ValidateBlendOperation(descriptor->color.operation));
DAWN_TRY(ValidateBlendFactor(descriptor->color.srcFactor));
DAWN_TRY(ValidateBlendFactor(descriptor->color.dstFactor));
DAWN_TRY(ValidateBlendComponent(descriptor->alpha));
DAWN_TRY(ValidateBlendComponent(descriptor->color));
return {};
}

48
src/tests/unittests/validation/RenderPipelineValidationTests.cpp
View File

@ -403,6 +403,54 @@ TEST_F(RenderPipelineValidationTest, FragmentOutputComponentCountCompatibility)
}
}
// Tests that when blendOperationMinOrMax is "min" or "max", both srcBlendFactor and dstBlendFactor
// must be "one".
TEST_F(RenderPipelineValidationTest, BlendOperationAndBlendFactors) {
constexpr std::array<wgpu::BlendFactor, 8> kBlendFactors = {wgpu::BlendFactor::Zero,
wgpu::BlendFactor::One,
wgpu::BlendFactor::SrcAlpha,
wgpu::BlendFactor::OneMinusSrcAlpha,
wgpu::BlendFactor::Src,
wgpu::BlendFactor::DstAlpha,
wgpu::BlendFactor::OneMinusDstAlpha,
wgpu::BlendFactor::Dst};
constexpr std::array<wgpu::BlendOperation, 2> kBlendOperationsForTest = {
wgpu::BlendOperation::Max, wgpu::BlendOperation::Min};
for (wgpu::BlendOperation blendOperationMinOrMax : kBlendOperationsForTest) {
for (wgpu::BlendFactor srcFactor : kBlendFactors) {
for (wgpu::BlendFactor dstFactor : kBlendFactors) {
utils::ComboRenderPipelineDescriptor descriptor;
descriptor.vertex.module = vsModule;
descriptor.cFragment.module = fsModule;
descriptor.cTargets[0].format = wgpu::TextureFormat::RGBA8Unorm;
descriptor.cTargets[0].blend = &descriptor.cBlends[0];
descriptor.cBlends[0].color.srcFactor = srcFactor;
descriptor.cBlends[0].color.dstFactor = dstFactor;
descriptor.cBlends[0].alpha.srcFactor = srcFactor;
descriptor.cBlends[0].alpha.dstFactor = dstFactor;
descriptor.cBlends[0].color.operation = blendOperationMinOrMax;
descriptor.cBlends[0].alpha.operation = wgpu::BlendOperation::Add;
if (srcFactor == wgpu::BlendFactor::One && dstFactor == wgpu::BlendFactor::One) {
device.CreateRenderPipeline(&descriptor);
} else {
ASSERT_DEVICE_ERROR(device.CreateRenderPipeline(&descriptor));
}
descriptor.cBlends[0].color.operation = wgpu::BlendOperation::Add;
descriptor.cBlends[0].alpha.operation = blendOperationMinOrMax;
if (srcFactor == wgpu::BlendFactor::One && dstFactor == wgpu::BlendFactor::One) {
device.CreateRenderPipeline(&descriptor);
} else {
ASSERT_DEVICE_ERROR(device.CreateRenderPipeline(&descriptor));
}
}
}
}
}
/// Tests that the sample count of the render pipeline must be valid.
TEST_F(RenderPipelineValidationTest, SampleCount) {
{