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shader: drop inactive pixel values under whole-quad masks

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This commit is contained in:
nmzik
2026-09-06 14:38:32 +04:00
parent 66c1663495
commit 533176f9ff
2 changed files with 29 additions and 6 deletions
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src/graphics/shader/recompiler/ir/passes/ConstantPropagation.cpp
+9 -1
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@@ -125,9 +125,17 @@ bool IsSelect(ValueOpcode opcode) {
bool Implies(Value condition, Value required, uint32_t depth = 0) {
condition = condition.Resolve();
required = required.Resolve();
if (condition == required) return true;
if (depth >= 64u) return false;
const auto* target = required.TryInstruction();
if (target != nullptr && target->GetOpcode() == ValueOpcode::LogicalOr &&
(Implies(condition, target->Arg(0), depth + 1u) ||
Implies(condition, target->Arg(1), depth + 1u))) {
return true;
}
const auto* inst = condition.TryInstruction();
return depth < 64u && inst != nullptr && inst->GetOpcode() == ValueOpcode::LogicalAnd &&
return inst != nullptr && inst->GetOpcode() == ValueOpcode::LogicalAnd &&
(Implies(inst->Arg(0), required, depth + 1u) ||
Implies(inst->Arg(1), required, depth + 1u));
}