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shader: preserve export vectors instead of rebuilding scalar components

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This commit is contained in:
nmzik
2026-10-09 02:42:43 +02:00
parent ee4dd90649
commit b4853a0e08
2 changed files with 35 additions and 38 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterFlow.cpp
+32 -36
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@@ -304,50 +304,46 @@ uint32_t ExportVector(ValueEmitContext& ctx, uint32_t data, const IR::ExportInfo
f32[0], f32[1], f32[2], f32[3]);
return vector;
}
uint32_t raw[4] = {
ConstantU32(state, 0),
ConstantU32(state, 0),
ConstantU32(state, 0),
ConstantU32(state, uint_output ? 1u : 0x3f800000u),
};
if (exp.compr) {
for (uint32_t pair = 0; pair < 2u; pair++) {
if ((exp.en & (3u << (pair * 2u))) == 0u) {
continue;
}
const auto packed = ExportRawComponent(ctx, data, pair);
for (uint32_t lane = 0; lane < 2u; lane++) {
const auto component = pair * 2u + lane;
if (((exp.en >> component) & 1u) == 0u) {
if (exp.compr || exp.en != 0xfu) {
uint32_t raw[4] = {
ConstantU32(state, 0),
ConstantU32(state, 0),
ConstantU32(state, 0),
ConstantU32(state, uint_output ? 1u : 0x3f800000u),
};
if (exp.compr) {
for (uint32_t pair = 0; pair < 2u; pair++) {
if ((exp.en & (3u << (pair * 2u))) == 0u) {
continue;
}
raw[component] = state.builder.AllocateId();
state.builder.AddFunction(spv::OpBitFieldUExtract, TypeU32(state), raw[component],
packed, ConstantU32(state, lane * 16u),
ConstantU32(state, 16));
}
}
} else {
for (uint32_t component = 0; component < 4u; component++) {
if (((exp.en >> component) & 1u) != 0u) {
raw[component] = ExportRawComponent(ctx, data, component);
const auto packed = ExportRawComponent(ctx, data, pair);
for (uint32_t lane = 0; lane < 2u; lane++) {
const auto component = pair * 2u + lane;
if (((exp.en >> component) & 1u) == 0u) {
continue;
}
raw[component] = state.builder.AllocateId();
state.builder.AddFunction(spv::OpBitFieldUExtract, TypeU32(state), raw[component],
packed, ConstantU32(state, lane * 16u),
ConstantU32(state, 16));
}
}
} else {
for (uint32_t component = 0; component < 4u; component++) {
if (((exp.en >> component) & 1u) != 0u) {
raw[component] = ExportRawComponent(ctx, data, component);
}
}
}
data = state.builder.AllocateId();
state.builder.AddFunction(spv::OpCompositeConstruct, TypeU32Vector(state, 4), data,
raw[0], raw[1], raw[2], raw[3]);
}
if (uint_output) {
const auto vector = state.builder.AllocateId();
state.builder.AddFunction(spv::OpCompositeConstruct, TypeU32Vector(state, 4), vector,
raw[0], raw[1], raw[2], raw[3]);
return vector;
}
uint32_t f32[4] {};
for (uint32_t component = 0; component < 4u; component++) {
f32[component] = state.builder.AllocateId();
state.builder.AddFunction(spv::OpBitcast, TypeF32(state), f32[component], raw[component]);
return data;
}
const auto vector = state.builder.AllocateId();
state.builder.AddFunction(spv::OpCompositeConstruct, TypeF32Vector(state, 4), vector, f32[0],
f32[1], f32[2], f32[3]);
state.builder.AddFunction(spv::OpBitcast, TypeF32Vector(state, 4), vector, data);
return vector;
}