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shader: preserve folded native constants for descriptor provenance

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This commit is contained in:
nmzik
2026-10-15 23:17:01 +02:00
parent e4019af522
commit c8caa27936
11 changed files with 111 additions and 43 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+15 -3
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@@ -604,9 +604,20 @@ private:
candidates.push_back(inst);
}
}
if (candidates.empty()) return value;
const auto source_at = [&](uint32_t pc) {
Value source;
bool dynamic = false;
for (auto write = std::ranges::lower_bound(m_scalar_writes, pc, {}, &Program::ScalarWrite::pc);
write != m_scalar_writes.end() && write->pc == pc; ++write) {
if (RegIndex(write->reg) != reg) continue;
if (!write->value.IsImmediate() || write->value.GetType() != Type::U32) {
dynamic = true;
continue;
}
if (!source.IsEmpty() && source != write->value) return Value {};
source = write->value;
}
if (!source.IsEmpty()) return dynamic ? Value {} : source;
const auto native = std::ranges::lower_bound(m_decoded.instructions, pc, {},
&Decoder::Instruction::pc);
for (const auto* candidate: candidates) {
@@ -644,8 +655,9 @@ private:
const auto source = source_at(pc);
if (source.IsEmpty()) return false;
if (!selected.IsEmpty()) {
const auto op = source.TryInstruction()->GetOpcode();
if ((op == ValueOpcode::LoadAddressU32 || op == ValueOpcode::ReadConstBuffer) &&
const auto* inst = source.TryInstruction();
if (inst != nullptr &&
(inst->GetOpcode() == ValueOpcode::LoadAddressU32 || inst->GetOpcode() == ValueOpcode::ReadConstBuffer) &&
selected_pc != pc) return false;
if (!EquivalentValue(m_program, selected, source)) return false;
}