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shader: preserve RDNA2 DLC coherence for flat address loads

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This commit is contained in:
Claxten
2026-10-06 03:28:30 +04:00
committed by nmzik
parent cdb64bfd4f
commit 9caec9f2c8
5 changed files with 75 additions and 14 deletions
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src/graphics/shader/recompiler/backend/spirv/SpirvEmitter.cpp
+5 -1
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@@ -205,7 +205,8 @@ Emitter::SpirvRequirements Emitter::AnalyzeProgramRequirements(const IR::Program
if (memory_index >= program.memory_info.size()) {
Fail(program, "address operation has invalid memory metadata");
}
const auto kind = program.memory_info[memory_index].kind;
const auto& memory = program.memory_info[memory_index];
const auto kind = memory.kind;
if (kind == IR::ResourceKind::Scratch || kind == IR::ResourceKind::FlatLocal) {
if (program.scratch_dwords == 0) {
Fail(program, "scratch operation has no per-thread storage");
@@ -217,6 +218,9 @@ Emitter::SpirvRequirements Emitter::AnalyzeProgramRequirements(const IR::Program
}
} else if (address_access == IR::AddressAccess::Write) {
Fail(program, "writable FLAT/GLOBAL addresses require GPU ownership tracking");
} else {
// Descriptor stores can alias coherent physical-address loads.
requirements.coherent_buffers |= memory.coherent;
}
}
if (IR::BufferAccessOf(inst.GetOpcode()) != IR::BufferAccess::None) {