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Preserve vertex export locations for mixed pixel interpolation

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This commit is contained in:
nmzik
2026-10-08 20:05:32 +04:00
parent b65dc12208
commit b38b7454a6
7 changed files with 100 additions and 10 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterFlow.cpp
+13 -2
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@@ -177,6 +177,13 @@ uint32_t EmitAttribute(EmitterState& state, uint32_t attr, uint32_t chan) {
return value;
};
if (input->per_vertex) {
if (PixelParameterIsFlat(state, attr)) {
const auto value = load_per_vertex(
state.input_info.pixel->parameter_mode == ShaderPixelParameterMode::LastVertex ? 2u : 0u);
const auto bits = state.builder.AllocateId();
state.builder.AddFunction(spv::OpBitcast, TypeU32(state), bits, value);
return bits;
}
const auto barycentric_kind = state.input_info.pixel->ps_no_perspective
? IR::StageInputKind::BaryCoordNoPerspective
: IR::StageInputKind::BaryCoordSmooth;
@@ -231,8 +238,12 @@ uint32_t EmitInterpolationParameter(ValueEmitContext& ctx, uint32_t attr, uint32
return value;
};
const auto selected_vertex = (mode + 1u) % 3u;
uint32_t value = load_vertex(selected_vertex);
uint32_t selected_vertex = (mode + 1u) % 3u;
if (mode == 2u && PixelParameterIsFlat(state, attr)) {
selected_vertex =
state.input_info.pixel->parameter_mode == ShaderPixelParameterMode::LastVertex ? 2u : 0u;
}
uint32_t value = load_vertex(selected_vertex);
if (!PixelParameterIsCustom(state, attr) && mode < 2u) {
const auto delta = state.builder.AllocateId();
state.builder.AddFunction(spv::OpFSub, TypeF32(state), delta, value, load_vertex(0));