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Just force reads on 8/16bits

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This commit is contained in:
CamilleLaVey
2026-09-29 17:46:53 -04:00
parent 2d6f28c50e
commit 213d9fb4a7
4 changed files with 144 additions and 35 deletions
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src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
+32 -17
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@@ -962,7 +962,7 @@ void EmitContext::DefineGlobalMemoryFunctions(const IR::Program& program) {
OpBranchConditional(cond, then_label, else_label);
AddLabel(then_label);
const Id word{OpShiftRightLogical(U32[1], offset, Const(2U))};
const Id result{callback(ssbos[index].U32, word, offset, value)};
const Id result{callback(ssbos[index], word, offset, value)};
if (returns_value) {
OpReturnValue(result);
} else {
@@ -978,11 +978,22 @@ void EmitContext::DefineGlobalMemoryFunctions(const IR::Program& program) {
OpFunctionEnd();
global_memory_funcs.emplace(opcode, func);
}};
const auto vector_pointer{[&](const StorageDefinitions& ssbo, Id word, u32 count) {
if (count == 2) {
return OpAccessChain(storage_types.U32x2.element, ssbo.U32x2, zero,
OpShiftRightLogical(U32[1], word, Const(1U)));
}
return OpAccessChain(storage_types.U32x4.element, ssbo.U32x4, zero,
OpShiftRightLogical(U32[1], word, Const(2U)));
}};
const auto load{[&](Id type, u32 count) {
return [&, type, count](Id ssbo, Id word, Id, Id) {
return [&, type, count](const StorageDefinitions& ssbo, Id word, Id, Id) {
if (count > 1 && profile.support_descriptor_aliasing) {
return OpLoad(type, vector_pointer(ssbo, word, count));
}
std::array<Id, 4> words{};
for (u32 element = 0; element < count; ++element) {
words[element] = OpLoad(U32[1], word_pointer(ssbo, word, element));
words[element] = OpLoad(U32[1], word_pointer(ssbo.U32, word, element));
}
if (count == 1) {
return words[0];
@@ -991,21 +1002,25 @@ void EmitContext::DefineGlobalMemoryFunctions(const IR::Program& program) {
};
}};
const auto store{[&](u32 count) {
return [&, count](Id ssbo, Id word, Id, Id value) {
return [&, count](const StorageDefinitions& ssbo, Id word, Id, Id value) {
if (count > 1 && profile.support_descriptor_aliasing) {
OpStore(vector_pointer(ssbo, word, count), value);
return Id{};
}
if (count == 1) {
OpStore(word_pointer(ssbo, word, 0), value);
OpStore(word_pointer(ssbo.U32, word, 0), value);
return Id{};
}
for (u32 element = 0; element < count; ++element) {
OpStore(word_pointer(ssbo, word, element),
OpStore(word_pointer(ssbo.U32, word, element),
OpCompositeExtract(U32[1], value, element));
}
return Id{};
};
}};
const auto extract{[&](bool is_signed, u32 count) {
return [&, is_signed, count](Id ssbo, Id word, Id offset, Id) {
const Id loaded{OpLoad(U32[1], word_pointer(ssbo, word, 0))};
return [&, is_signed, count](const StorageDefinitions& ssbo, Id word, Id offset, Id) {
const Id loaded{OpLoad(U32[1], word_pointer(ssbo.U32, word, 0))};
if (is_signed) {
return OpBitFieldSExtract(U32[1], loaded, bits(offset, count), Const(count));
}
@@ -1013,28 +1028,28 @@ void EmitContext::DefineGlobalMemoryFunctions(const IR::Program& program) {
};
}};
const auto insert{[&](u32 count) {
return [&, count](Id ssbo, Id word, Id offset, Id value) {
AtomicBitFieldInsert(word_pointer(ssbo, word, 0), value, bits(offset, count),
return [&, count](const StorageDefinitions& ssbo, Id word, Id offset, Id value) {
AtomicBitFieldInsert(word_pointer(ssbo.U32, word, 0), value, bits(offset, count),
Const(count));
return Id{};
};
}};
const auto atomic{[&](Id (Sirit::Module::*func)(Id, Id, Id, Id, Id)) {
return [&, func](Id ssbo, Id word, Id, Id value) {
return (this->*func)(U32[1], word_pointer(ssbo, word, 0), scope, zero, value);
return [&, func](const StorageDefinitions& ssbo, Id word, Id, Id value) {
return (this->*func)(U32[1], word_pointer(ssbo.U32, word, 0), scope, zero, value);
};
}};
const auto cas{[&](Id type, Id helper) {
return [&, type, helper](Id ssbo, Id word, Id, Id value) {
return OpFunctionCall(type, helper, word, value, ssbo);
return [&, type, helper](const StorageDefinitions& ssbo, Id word, Id, Id value) {
return OpFunctionCall(type, helper, word, value, ssbo.U32);
};
}};
const auto packed{[&](bool is_half, Id helper) {
return [&, is_half, helper](Id ssbo, Id word, Id, Id value) {
return [&, is_half, helper](const StorageDefinitions& ssbo, Id word, Id, Id value) {
if (is_half) {
return OpBitcast(U32[1], OpFunctionCall(F16[2], helper, word, value, ssbo));
return OpBitcast(U32[1], OpFunctionCall(F16[2], helper, word, value, ssbo.U32));
}
return OpPackHalf2x16(U32[1], OpFunctionCall(F32[2], helper, word, value, ssbo));
return OpPackHalf2x16(U32[1], OpFunctionCall(F32[2], helper, word, value, ssbo.U32));
};
}};
for (const IR::Block* const block : program.post_order_blocks) {