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shader: eliminate retained SRT lookup aliases

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This commit is contained in:
nmzik
2026-10-09 00:55:36 +02:00
parent e1ac893a0c
commit dbe5353f3a
9 changed files with 239 additions and 116 deletions
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src/graphics/shader/recompiler/ir/passes/SrtWalker.cpp
+12 -25
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@@ -324,10 +324,9 @@ private:
} // namespace
SrtWalker::SrtWalker(const ResourcePlan& program, const SrtRuntime& runtime,
std::span<const uint8_t> clean_flat_slots, SrtWalker* clean_evaluator,
Value active_mask)
: m_program(program), m_runtime(runtime), m_clean_flat_slots(clean_flat_slots),
m_clean_evaluator(clean_evaluator), m_active_mask(active_mask.Resolve()),
SrtWalker* clean_evaluator, Value active_mask)
: m_program(program), m_runtime(runtime), m_clean_evaluator(clean_evaluator),
m_active_mask(active_mask.Resolve()),
m_context(AcquireContext(program)) {}
SrtWalker::~SrtWalker() { --m_program.evaluation_depth; }
@@ -455,7 +454,7 @@ bool SrtWalker::EvaluateExtract(const Inst& inst, uint64_t& result) {
}
bool SrtWalker::EvaluateRawRead(const Inst& inst, uint64_t& result) {
const auto flags = inst.Flags<MemoryFlags>();
const auto flags = inst.Flags<SrtReadFlags>();
if (flags.index >= m_program.memory_info.size()) {
return false;
}
@@ -557,9 +556,8 @@ bool SrtWalker::EvaluateInst(const Inst& inst, uint64_t& result) {
return EvaluateWide(inst.Arg(0), result);
}
const auto clean_runtime = CleanRuntime(m_runtime);
SrtWalker clean_active(m_program, clean_runtime, {}, nullptr, inst.Arg(1));
SrtWalker active(m_program, m_runtime, m_clean_flat_slots, &clean_active,
inst.Arg(1));
SrtWalker clean_active(m_program, clean_runtime, nullptr, inst.Arg(1));
SrtWalker active(m_program, m_runtime, &clean_active, inst.Arg(1));
return active.EvaluateWide(inst.Arg(0), result);
}
case ValueOpcode::BitCastU32F32:
@@ -573,25 +571,14 @@ bool SrtWalker::EvaluateInst(const Inst& inst, uint64_t& result) {
result = static_cast<uint32_t>(a) |
(static_cast<uint64_t>(static_cast<uint32_t>(b)) << 32u);
return true;
case ValueOpcode::ReadConst: {
const auto slot = inst.Arg(1).Resolve();
if (!slot.IsImmediate() || slot.GetType() != Type::U32 ||
slot.U32() >= m_program.srt_reads.size()) {
return false;
}
if (slot.U32() < m_clean_flat_slots.size() &&
m_clean_flat_slots[slot.U32()] != 0u && m_clean_evaluator != nullptr) {
return m_clean_evaluator->EvaluateWide(m_program.srt_reads[slot.U32()].value,
result);
}
return EvaluateWide(m_program.srt_reads[slot.U32()].value, result);
}
case ValueOpcode::LoadAddressU32:
case ValueOpcode::ReadConstBuffer:
case ValueOpcode::LoadBufferU32:
if (IsRawRead(m_program, inst)) {
if (inst.GetOpcode() == ValueOpcode::LoadBufferU32 && m_clean_evaluator != nullptr &&
m_clean_evaluator->m_active_mask == m_active_mask) {
if (m_clean_evaluator != nullptr &&
(inst.Flags<SrtReadFlags>().clean != 0u ||
(inst.GetOpcode() == ValueOpcode::LoadBufferU32 &&
m_clean_evaluator->m_active_mask == m_active_mask))) {
return m_clean_evaluator->EvaluateWide(Value(const_cast<Inst*>(&inst)), result);
}
return EvaluateRawRead(inst, result);
@@ -934,8 +921,8 @@ bool SrtWalker::RefreshFlatBuffer(std::vector<uint32_t>& flat) {
const auto refresh = [&](uint32_t slot) {
if (slot >= m_program.srt_reads.size()) return false;
const auto& read = m_program.srt_reads[slot];
const bool clean = read.flat_offset < m_clean_flat_slots.size() &&
m_clean_flat_slots[read.flat_offset] != 0u;
const auto* inst = read.value.ResolveInstruction();
const bool clean = inst != nullptr && inst->Flags<SrtReadFlags>().clean != 0u;
if (clean && (m_clean_evaluator == nullptr || m_runtime.read_specialization_memory == nullptr))
return false;
auto& evaluator = clean ? *m_clean_evaluator : *this;