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ShaderCompiler: Inline driver specific constants.

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This commit is contained in:
Fernando Sahmkow 2022-12-27 21:39:46 -05:00
parent b62ffb612d
commit a045e860dd
5 changed files with 39 additions and 3 deletions
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30
src/shader_recompiler/ir_opt/constant_propagation_pass.cpp
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@ -677,6 +677,30 @@ void FoldConstBuffer(Environment& env, IR::Block& block, IR::Inst& inst) {
}
}
void FoldDriverConstBuffer(Environment& env, IR::Block& block, IR::Inst& inst, u32 which_bank,
u32 offset_start = 0, u32 offset_end = std::numeric_limits<u16>::max()) {
const IR::Value bank{inst.Arg(0)};
const IR::Value offset{inst.Arg(1)};
if (!bank.IsImmediate() || !offset.IsImmediate()) {
return;
}
const auto bank_value = bank.U32();
if (bank_value != which_bank) {
return;
}
const auto offset_value = offset.U32();
if (offset_value < offset_start || offset_value >= offset_end) {
return;
}
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
if (inst.GetOpcode() == IR::Opcode::GetCbufU32) {
inst.ReplaceUsesWith(IR::Value{env.ReadCbufValue(bank_value, offset_value)});
} else {
inst.ReplaceUsesWith(
IR::Value{Common::BitCast<f32>(env.ReadCbufValue(bank_value, offset_value))});
}
}
void ConstantPropagation(Environment& env, IR::Block& block, IR::Inst& inst) {
switch (inst.GetOpcode()) {
case IR::Opcode::GetRegister:
@ -825,13 +849,17 @@ void ConstantPropagation(Environment& env, IR::Block& block, IR::Inst& inst) {
case IR::Opcode::GetCbufF32:
case IR::Opcode::GetCbufU32:
if (env.HasHLEMacroState()) {
return FoldConstBuffer(env, block, inst);
FoldConstBuffer(env, block, inst);
}
if (env.IsPropietaryDriver()) {
FoldDriverConstBuffer(env, block, inst, 1);
}
break;
default:
break;
}
}
} // Anonymous namespace
void ConstantPropagationPass(Environment& env, IR::Program& program) {