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shader: replace CPU selector chains with direct image-table lookup

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This commit is contained in:
Claxten
2026-10-06 04:25:06 +04:00
committed by nmzik
parent c23de62184
commit cd06601022
8 changed files with 467 additions and 637 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterImage.cpp
+1 -1
View File
@@ -849,7 +849,7 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
return;
}
const auto key = ctx.Def(handle->Arg(0));
if (state.flattened_srt_variable == 0 || image.indirect_search_iterations == 0u ||
if (state.flattened_srt_variable == 0 ||
image.indirect_resources.size() < 2u) {
ctx.Fail(inst, "has no indirect image runtime mapping");
return;
src/graphics/shader/recompiler/backend/spirv/spirvEmitterMemoryHelpers.cpp
+10
View File
@@ -44,6 +44,16 @@ uint32_t EmitIndirectResourceIndex(EmitterState& state, uint32_t key, uint32_t m
};
const auto mapping = ConstantU32(state, mapping_offset);
const auto count = LoadMapping(mapping);
if (search_iterations == 0u) {
const auto index = Binary(state, spv::OpShiftRightLogical, TypeU32(state), key,
ConstantU32(state, 2u));
const auto valid = Binary(state, spv::OpULessThan, TypeBool(state), index, count);
const auto safe = Select(state, TypeU32(state), valid, index, ConstantU32(state, 0u));
const auto entry = Binary(state, spv::OpIAdd, TypeU32(state), safe,
ConstantU32(state, mapping_offset + 1u));
return Select(state, TypeU32(state), valid, LoadMapping(entry),
ConstantU32(state, default_resource));
}
const auto entry_at = [&](uint32_t index) {
return Binary(state, spv::OpIAdd, TypeU32(state), mapping,
Binary(state, spv::OpIAdd, TypeU32(state),