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shader: reuse dominating descriptor loads across image samples

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This commit is contained in:
nmzik
2026-10-13 00:42:31 +02:00
parent d70cbd4184
commit 7e884f55e0
3 changed files with 53 additions and 17 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+10 -8
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@@ -1596,7 +1596,7 @@ private:
return false;
}
bool InitializedBefore(const Inst& initial, const Inst& use, Value witness) const {
bool AvailableBefore(const Inst& initial, const Inst& use, Value witness = {}) const {
if (initial.Parent() == use.Parent()) return BeforeInBlock(initial, use);
std::vector<const Block*> pending {use.Parent()};
for (size_t index = 0; index < pending.size(); ++index) {
@@ -1604,10 +1604,12 @@ private:
if (current == initial.Parent()) continue;
if (current->ImmPredecessors().empty()) return false;
for (const auto* previous: current->ImmPredecessors()) {
const auto edge = ConditionalEdge(previous, current);
// The proven local-zero invocation makes an all-inactive bypass impossible.
if (edge && edge->lanes == LaneQuantifier::All && !edge->positive &&
Implies(witness, edge->condition)) continue;
if (!witness.IsEmpty()) {
const auto edge = ConditionalEdge(previous, current);
// The proven local-zero invocation makes an all-inactive bypass impossible.
if (edge && edge->lanes == LaneQuantifier::All && !edge->positive &&
Implies(witness, edge->condition)) continue;
}
if (std::ranges::find(pending, previous) == pending.end()) pending.push_back(previous);
}
}
@@ -1817,8 +1819,8 @@ private:
uint32_t initialized = 0;
for (const auto& initial: initializers) {
const auto witness = initial.inst->Arg(initial.inst->NumArgs() - 1u);
if (!InitializedBefore(*initial.inst, *append.atomic, witness) ||
!InitializedBefore(*initial.inst, *counter_read, witness)) return {};
if (!AvailableBefore(*initial.inst, *append.atomic, witness) ||
!AvailableBefore(*initial.inst, *counter_read, witness)) return {};
if (append.counter >= initial.address &&
uint64_t {append.counter} < uint64_t {initial.address} + initial.words * 4u) ++initialized;
}
@@ -2382,7 +2384,7 @@ private:
current_handle->GetOpcode() != (memory->kind == ResourceKind::ScalarAddress
? ValueOpcode::GetAddressResource
: ValueOpcode::GetBufferResource) ||
(memory->kind == ResourceKind::ScalarAddress && read->Parent() != handle.Parent()) ||
(memory->kind == ResourceKind::ScalarAddress && !AvailableBefore(*read, handle)) ||
(table_handle != nullptr &&
!EquivalentValue(m_program, Value(table_handle), Value(current_handle))) ||
(!indexed && !MatchTableOffset(read->Arg(1), current_key, offset, stride))) {