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shader: read sample IDs from pixel ancillary input

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This commit is contained in:
nmzik
2026-09-06 06:54:38 +04:00
parent ace877ce28
commit b346f58b73
8 changed files with 91 additions and 20 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterModule.cpp
+6 -1
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@@ -512,6 +512,7 @@ uint32_t BuiltInForInput(IR::StageInputKind kind) {
case IR::StageInputKind::FragCoord: return BuiltInFragCoord;
case IR::StageInputKind::FrontFacing: return BuiltInFrontFacing;
case IR::StageInputKind::Layer: return BuiltInLayer;
case IR::StageInputKind::SampleId: return BuiltInSampleId;
case IR::StageInputKind::BaryCoordSmooth: return BuiltInBaryCoordKHR;
case IR::StageInputKind::BaryCoordNoPerspective: return BuiltInBaryCoordNoPerspKHR;
case IR::StageInputKind::WorkgroupId: return BuiltInWorkgroupId;
@@ -535,7 +536,7 @@ void AddInputAnnotationsAndNames(EmitterState& state) {
}
for (const auto& input: state.inputs) {
state.builder.AddName(input.variable_id, input.debug_name.c_str());
if (input.kind == IR::StageInputKind::Layer) {
if (input.kind == IR::StageInputKind::Layer || input.kind == IR::StageInputKind::SampleId) {
state.builder.AddAnnotation({OpDecorate, input.variable_id, DecorationFlat});
}
if (input.kind == IR::StageInputKind::Parameter) {
@@ -711,6 +712,9 @@ void DefineModule(EmitterState& state) {
state.builder.RequireVersion(0x00010500u);
state.builder.RequireCapability(CapabilityShaderLayer);
}
if (InputVariableForKind(state, IR::StageInputKind::SampleId) != 0) {
state.builder.RequireCapability(CapabilitySampleRateShading);
}
if (state.requirements.image_gather_extended) {
state.builder.RequireCapability(CapabilityImageGatherExtended);
}
@@ -803,6 +807,7 @@ void DefineModule(EmitterState& state) {
case IR::StageInputKind::VertexIndex:
case IR::StageInputKind::InstanceIndex:
case IR::StageInputKind::Layer:
case IR::StageInputKind::SampleId:
ptr_type = TypePointer(state, StorageClassInput, TypeI32(state));
break;
case IR::StageInputKind::WorkgroupId: