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gpu: address extended guest memory without widening dense cache tables

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nmzik committed 2026-09-28 18:01:49 +04:00
1 parent c91fe80d64
commit 2016f8e2fe
12 files changed
+81 -34
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterMemory.cpp
+8 -1
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@@ -975,7 +975,14 @@ void DefineGetBdaPointer(EmitterState& state) {
state.builder.AddFunction(spv::OpFunctionParameter, type, address);
EmitLabel(state, entry_label);
const auto page64 = Binary(state, spv::OpShiftRightLogical, type, address,
const auto extended = Binary(state, spv::OpUGreaterThanEqual, TypeBool(state), address,
ConstantDeviceAddress(state, LibKernel::Memory::kExtendedMemoryBase));
const auto packed = Select(state, type, extended,
Binary(state, spv::OpISub, type, address,
ConstantDeviceAddress(state,
LibKernel::Memory::kExtendedMemoryBase - LOWER_ADDRESS_SIZE)),
address);
const auto page64 = Binary(state, spv::OpShiftRightLogical, type, packed,
ConstantDeviceAddress(state, BufferCache::CACHING_PAGEBITS));
const auto page = Unary(state, spv::OpUConvert, TypeU32(state), page64);
const auto entry_pointer = state.builder.AllocateId();