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[Fix] (DirectVulkan): narrow the blended depth-write quirk to order-independent accumulation blends, exempting sorted-transparency, gl_FragDepth writers and fully masked attachments

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swung0x48
2026-07-20 07:39:25 -04:00
parent f9f455144c
commit c158bfa584
9 changed files with 527 additions and 27 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/ProgramFactory.h
+13
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@@ -78,6 +78,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
ShaderStage rasterizationProducerStage = ShaderStage::Unknown;
Uint32 producerOutputComponentCount = 0;
Uint32 fragmentInputComponentCount = 0;
// The fragment module declares the DepthReplacing execution mode (writes
// gl_FragDepth); shader-computed depth is immune to the cross-pipeline
// position-invariance quirk (see PipelineFactory::ShouldSuppressDepthWrite).
Bool fragmentReplacesDepth = false;
static inline VkDevice s_device = VK_NULL_HANDLE;
@@ -111,6 +115,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
rasterizationProducerStage = other.rasterizationProducerStage;
producerOutputComponentCount = other.producerOutputComponentCount;
fragmentInputComponentCount = other.fragmentInputComponentCount;
fragmentReplacesDepth = other.fragmentReplacesDepth;
other.hash = 0;
other.descriptorSetLayout = VK_NULL_HANDLE;
other.pipelineLayout = VK_NULL_HANDLE;
@@ -121,6 +126,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
other.rasterizationProducerStage = ShaderStage::Unknown;
other.producerOutputComponentCount = 0;
other.fragmentInputComponentCount = 0;
other.fragmentReplacesDepth = false;
}
VkProgramObject& operator=(VkProgramObject&& other) noexcept {
if (this == &other) {
@@ -153,6 +159,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
rasterizationProducerStage = other.rasterizationProducerStage;
producerOutputComponentCount = other.producerOutputComponentCount;
fragmentInputComponentCount = other.fragmentInputComponentCount;
fragmentReplacesDepth = other.fragmentReplacesDepth;
other.hash = 0;
other.descriptorSetLayout = VK_NULL_HANDLE;
other.pipelineLayout = VK_NULL_HANDLE;
@@ -163,6 +170,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
other.rasterizationProducerStage = ShaderStage::Unknown;
other.producerOutputComponentCount = 0;
other.fragmentInputComponentCount = 0;
other.fragmentReplacesDepth = false;
return *this;
}
@@ -210,6 +218,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
static VkShaderStageFlagBits ToVkStage(ShaderStage stage);
static VkFormat ConvertSpirvImageFormatToVkFormat(SpvImageFormat format);
static SamplerNumericDomain UniformTypeToSamplerNumericDomain(GLenum glType);
// True when any entry point declares the DepthReplacing execution mode, i.e. the
// shader assigns gl_FragDepth. Exposed so the blended depth-write quirk's exemption
// can be pinned by tests. A false negative loses the exemption, so such a shader is
// stripped conservatively and forfeits its depth write.
static Bool ReflectedFragmentReplacesDepth(const SpvReflectShaderModule& reflectModule);
private:
struct ProgramLookupCache {