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shader: keep GPU-derived scalar resource reads on the GPU

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Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
Co-authored-by: TheCruZ <thecruzwtf@gmail.com>
This commit is contained in:
nmzik
2026-10-04 03:18:09 +04:00
parent f18679e0cd
commit b4d32394b6
7 changed files with 169 additions and 21 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+7 -3
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@@ -736,12 +736,14 @@ private:
for (auto* read: m_scalar_reads) {
const auto flags = read->Flags<MemoryFlags>();
auto& memory = m_program.memory_info[flags.index];
memory.planning_only = true;
const auto* handle = read->Arg(0).Resolve().TryInstruction();
auto resolved = std::ranges::find_if(m_resolved_handles, [&](const auto& entry) {
return entry.handle == handle && entry.pc == flags.pc;
});
EXIT_IF(resolved == m_resolved_handles.end());
uint32_t bad_dword = 0;
if (!ValidateSource(resolved->source, bad_dword)) continue;
memory.planning_only = true;
uint32_t slot = 0;
for (; slot < m_program.srt_reads.size(); ++slot) {
const auto* other = m_program.srt_reads[slot].value.Resolve().TryInstruction();
@@ -2071,10 +2073,12 @@ private:
source = indirect->source;
} else if (!GetHandle(inst.Arg(0), ValueOpcode::GetBufferResource, 4, flags.pc,
memory.resource * 4u, handle, source)) {
if (memory.kind != ResourceKind::Buffer || !memory.SupportsIndirectBufferLoad(op)) {
if (memory.kind != (op == ValueOpcode::ReadConstBuffer ? ResourceKind::ScalarBuffer
: ResourceKind::Buffer) ||
!memory.SupportsIndirectBufferLoad(op)) {
Fail(flags.pc,
"buffer descriptor is not a valid runtime value; GPU-selected access "
"requires a raw DWORD x2/x3/x4 load");
"requires a scalar or raw DWORD x2/x3/x4 load");
}
m_program.memory_info[flags.index].kind = ResourceKind::IndirectBuffer;
m_info.uses_dma = true;