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shader: handle scalar guards for image bounds

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This commit is contained in:
nmzik
2026-09-28 05:30:22 +04:00
parent 720a0b5bbf
commit dacba43fcc
2 changed files with 33 additions and 22 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+14 -18
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@@ -705,22 +705,10 @@ private:
return false;
}
const auto* previous = block->ImmPredecessors()[0];
const auto current_it = std::ranges::find(m_program.blocks, block);
const auto previous_it = std::ranges::find(m_program.blocks, previous);
if (current_it == m_program.blocks.end() || previous_it == m_program.blocks.end()) {
return false;
}
const auto& info = m_program.block_info[previous_it - m_program.blocks.begin()];
const auto id = m_program.block_info[current_it - m_program.blocks.begin()].id;
const auto& term = info.terminator;
if (term.kind == CFG::TerminatorKind::ConditionalBranch &&
(term.true_block == id) != (term.false_block == id)) {
bool positive = term.true_block == id;
const auto* test = info.condition.Resolve().TryInstruction();
while (test != nullptr && test->GetOpcode() == ValueOpcode::LogicalNot) {
positive = !positive;
test = test->Arg(0).Resolve().TryInstruction();
}
Value condition;
bool positive = false;
if (ConditionalEdge(previous, block, condition, positive)) {
const auto* test = condition.TryInstruction();
if (test != nullptr && test->NumArgs() == 2u &&
((test->GetOpcode() == ValueOpcode::INotEqual32 && positive) ||
(test->GetOpcode() == ValueOpcode::IEqual32 && !positive))) {
@@ -801,9 +789,17 @@ private:
condition = info.condition;
positive = term.true_block == id;
while (const auto* inst = condition.Resolve().TryInstruction()) {
if (inst->GetOpcode() != ValueOpcode::LogicalNot) break;
if (inst->GetOpcode() == ValueOpcode::LogicalNot) {
positive = !positive;
} else if (inst->GetOpcode() == ValueOpcode::ConditionRef) {
// SCC is uniform across the guest wave; EXEC and VCC are lane predicates.
const auto kind = inst->Flags<CFG::BranchCondition>();
if (kind != CFG::BranchCondition::SccZero &&
kind != CFG::BranchCondition::SccNonZero) break;
} else {
break;
}
condition = inst->Arg(0);
positive = !positive;
}
condition = condition.Resolve();
return true;