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shader: use the V_PERMLANE16 row directly instead of copying it

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nmzik committed 2026-10-25 02:20:44 +02:00
1 parent 59d8256b36
commit 72903bfce6
2 files changed
+16 -19
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterFlow.cpp
+15 -19
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@@ -843,27 +843,23 @@ uint32_t EmitWriteLane(ValueEmitContext& ctx, const IR::Inst& inst) {
}
uint32_t EmitPermlane16U32(ValueEmitContext& ctx, const IR::Inst& inst) {
auto& state = ctx.state;
const auto flags = inst.Flags<IR::PermlaneFlags>();
const auto subid = EmitSubgroupLocalInvocationId(state);
const auto row = state.builder.AllocateId();
const auto row_value = state.builder.AllocateId();
const auto lane = state.builder.AllocateId();
const auto lane8 = state.builder.AllocateId();
const auto shift = state.builder.AllocateId();
const auto upper = state.builder.AllocateId();
const auto selected = state.builder.AllocateId();
const auto shifted = state.builder.AllocateId();
const auto index = state.builder.AllocateId();
const auto target = state.builder.AllocateId();
auto& state = ctx.state;
const auto flags = inst.Flags<IR::PermlaneFlags>();
const auto subid = EmitSubgroupLocalInvocationId(state);
const auto row = state.builder.AllocateId();
const auto lane = state.builder.AllocateId();
const auto lane8 = state.builder.AllocateId();
const auto shift = state.builder.AllocateId();
const auto upper = state.builder.AllocateId();
const auto selected = state.builder.AllocateId();
const auto shifted = state.builder.AllocateId();
const auto index = state.builder.AllocateId();
const auto target = state.builder.AllocateId();
state.builder.AddFunction(spv::OpBitwiseAnd, TypeU32(state), row, subid,
ConstantU32(state, 0xfffffff0u));
if (flags.x16) {
state.builder.AddFunction(spv::OpBitwiseXor, TypeU32(state), row_value, row,
ConstantU32(state, 16));
} else {
state.builder.AddFunction(spv::OpCopyObject, TypeU32(state), row_value, row);
}
const auto row_value =
flags.x16 ? Binary(state, spv::OpBitwiseXor, TypeU32(state), row, ConstantU32(state, 16))
: row;
state.builder.AddFunction(spv::OpBitwiseAnd, TypeU32(state), lane, subid,
ConstantU32(state, 15));
state.builder.AddFunction(spv::OpBitwiseAnd, TypeU32(state), lane8, lane,