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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/spirvEmitterFlow.cpp
+1 -1
View File
@@ -72,7 +72,7 @@ uint32_t EmitBuiltinU32(ValueEmitContext& ctx, IR::StageInputKind kind, uint32_t
return bits;
}
if (kind == IR::StageInputKind::VertexIndex || kind == IR::StageInputKind::InstanceIndex ||
kind == IR::StageInputKind::Layer) {
kind == IR::StageInputKind::Layer || kind == IR::StageInputKind::SampleId) {
const auto value = state.builder.AllocateId();
const auto bits = state.builder.AllocateId();
state.builder.AddFunction({OpLoad, TypeI32(state), value, variable});
src/graphics/shader/recompiler/backend/spirv/spirvEmitterInternal.h
+2
View File
@@ -43,6 +43,7 @@ enum : uint32_t {
CapabilityImageGatherExtended = 25,
CapabilityClipDistance = 32,
CapabilityCullDistance = 33,
CapabilitySampleRateShading = 35,
CapabilitySampled1D = 43,
CapabilityImage1D = 44,
CapabilityImageQuery = 50,
@@ -92,6 +93,7 @@ enum : uint32_t {
BuiltInLayer = 9,
BuiltInFragCoord = 15,
BuiltInFrontFacing = 17,
BuiltInSampleId = 18,
BuiltInSampleMask = 20,
BuiltInFragDepth = 22,
BuiltInWorkgroupId = 26,
src/graphics/shader/recompiler/backend/spirv/spirvEmitterModule.cpp
+6 -1
View File
@@ -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: