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Fix PS5 front-face VGPR encoding to restore scene lighting

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This commit is contained in:
nmzik
2026-09-15 06:20:35 +04:00
parent ea092a9472
commit 7b5a33f878
1 changed files with 3 additions and 2 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterFlow.cpp
+3 -2
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@@ -46,8 +46,9 @@ uint32_t EmitBuiltinU32(EmitterState& state, IR::StageInputKind kind, uint32_t c
const auto value = state.builder.AllocateId(); const auto value = state.builder.AllocateId();
const auto bits = state.builder.AllocateId(); const auto bits = state.builder.AllocateId();
state.builder.AddFunction(spv::OpLoad, TypeBool(state), value, variable); state.builder.AddFunction(spv::OpLoad, TypeBool(state), value, variable);
state.builder.AddFunction(spv::OpSelect, TypeU32(state), bits, value, ConstantU32(state, 1), // PS5 initializes v_front_face with float +1.0/-1.0 bits.
ConstantU32(state, 0)); state.builder.AddFunction(spv::OpSelect, TypeU32(state), bits, value,
ConstantU32(state, 0x3f800000u), ConstantU32(state, 0xbf800000u));
return bits; return bits;
} }
if (kind == IR::StageInputKind::VertexIndex || kind == IR::StageInputKind::InstanceIndex || if (kind == IR::StageInputKind::VertexIndex || kind == IR::StageInputKind::InstanceIndex ||