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shader: Implement FSWZADD

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This commit is contained in:
ameerj 2021-03-28 22:23:45 -04:00
parent 34aba9627a
commit 6c51f49632
14 changed files with 87 additions and 4 deletions
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8
src/shader_recompiler/backend/spirv/emit_context.cpp
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@ -393,6 +393,14 @@ void EmitContext::DefineInputs(const Info& info) {
subgroup_local_invocation_id =
DefineInput(*this, U32[1], spv::BuiltIn::SubgroupLocalInvocationId);
}
if (info.uses_fswzadd) {
const Id f32_one{Constant(F32[1], 1.0f)};
const Id f32_minus_one{Constant(F32[1], -1.0f)};
const Id f32_zero{Constant(F32[1], 0.0f)};
fswzadd_lut_a = ConstantComposite(F32[4], f32_minus_one, f32_one, f32_minus_one, f32_zero);
fswzadd_lut_b =
ConstantComposite(F32[4], f32_minus_one, f32_minus_one, f32_one, f32_minus_one);
}
if (info.loads_position) {
const bool is_fragment{stage != Stage::Fragment};
const spv::BuiltIn built_in{is_fragment ? spv::BuiltIn::Position : spv::BuiltIn::FragCoord};