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shader: execute PS5 BVH intersections and local FLAT stacks

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Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
Co-authored-by: Mac <me@itsmemac.com>
Co-authored-by: Senaxx <michelbeld@gmail.com>
Co-authored-by: Jean-Philippe <github@meunier.jp>
This commit is contained in:
nmzik
2026-10-01 07:55:28 +04:00
parent 581dad7dd3
commit 337f432016
22 changed files with 859 additions and 156 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+41
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@@ -44,6 +44,34 @@ uint32_t PossibleU32Bits(Value value) {
}
}
bool IsNoncanonicalFlatAddress(Value high, Value active) {
high = high.Resolve();
active = active.Resolve();
// A predicated VGPR write supplies its new value on exactly the lanes which
// execute this access. Do not discard a selection under a different mask.
while (const auto* select = high.TryInstruction()) {
if (select->GetOpcode() != ValueOpcode::SelectU32 || select->Arg(0).Resolve() != active) break;
high = select->Arg(1).Resolve();
}
uint32_t lower = 0, upper = UINT32_MAX;
if (high.IsImmediate() && high.GetType() == Type::U32) {
lower = upper = high.U32();
} else if (const auto* inst = high.TryInstruction();
inst != nullptr && inst->GetOpcode() == ValueOpcode::UMedTri32) {
// The median lies between any two constant inputs, regardless of the third.
uint32_t count = 0;
for (size_t index = 0; index < inst->NumArgs(); ++index) {
const auto value = inst->Arg(index).Resolve();
if (!value.IsImmediate() || value.GetType() != Type::U32) continue;
if (count++ == 0) lower = upper = value.U32();
else { lower = std::min(lower, value.U32()); upper = std::max(upper, value.U32()); }
}
if (count < 2) return false;
}
// Leave one high DWORD on each side for the signed instruction offset/carry.
return lower > 0x00008000u && upper < 0xffff7fffu;
}
Value CanonicalizeSampleAdjustDword3(Value value) {
for (;;) {
value = value.Resolve();
@@ -1649,6 +1677,10 @@ private:
void Collect(Inst& inst) {
const auto op = inst.GetOpcode();
if (op == ValueOpcode::BvhIntersect) {
m_info.uses_dma = true;
return;
}
const auto buffer = BufferAccessOf(op);
const auto address_info = AddressOpcodeInfoOf(op);
const auto image_info = ImageOpcodeInfoOf(op);
@@ -1695,6 +1727,15 @@ private:
if (!IsAddressResourceKind(memory.kind)) {
Fail(flags.pc, "address operation has invalid resource kind");
}
if (memory.kind == ResourceKind::Flat && memory.address_is_full &&
IsNoncanonicalFlatAddress(inst.Arg(2), inst.Arg(inst.NumArgs() - 1))) {
ValidateAddressHandle(inst.Arg(0), flags.pc);
if (memory.data_bits != 32u || m_program.scratch_dwords == 0) {
Fail(flags.pc, "local FLAT access requires DWORD data and per-thread scratch storage");
}
m_program.memory_info[flags.index].kind = ResourceKind::FlatLocal;
return;
}
if (memory.kind == ResourceKind::Scratch) {
handle = inst.Arg(0).Resolve().TryInstruction();
if (handle == nullptr || handle->GetOpcode() != ValueOpcode::GetScratchResource ||