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shader: bind bounded GPU-selected buffer store destinations

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Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
This commit is contained in:
nmzik
2026-10-03 23:04:51 +04:00
parent db17585277
commit 429d0af62b
15 changed files with 784 additions and 211 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterImage.cpp
+3 -51
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@@ -808,7 +808,7 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
const auto* source = image.source < state.program.descriptor_sources.size()
? &state.program.descriptor_sources[image.source]
: nullptr;
if (handle == nullptr || source == nullptr || !source->indirect_image.has_value() ||
if (handle == nullptr || source == nullptr || !source->indirect_descriptor.has_value() ||
handle->NumArgs() == 0u) {
ctx.Fail(inst, "has invalid indirect image key provenance");
return;
@@ -819,56 +819,8 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
ctx.Fail(inst, "has no indirect image runtime mapping");
return;
}
const auto LoadMapping = [&](uint32_t index) {
const auto pointer = state.builder.AllocateId();
state.builder.AddFunction(spv::OpAccessChain, TypeStorageBufferElementPointer(state),
pointer, state.flattened_srt_variable, ConstantU32(state, 0),
index);
const auto value = state.builder.AllocateId();
state.builder.AddFunction(spv::OpLoad, TypeU32(state), value, pointer);
return value;
};
const auto mapping = ConstantU32(state, image.indirect_mapping_offset);
auto low = ConstantU32(state, 0u);
auto high = LoadMapping(mapping);
auto selected = ConstantU32(state, 0u);
for (uint32_t iteration = 0; iteration < image.indirect_search_iterations;
iteration++) {
const auto active = Binary(state, spv::OpULessThan, TypeBool(state), low, high);
const auto mid = Binary(state, spv::OpShiftRightLogical, TypeU32(state),
Binary(state, spv::OpIAdd, TypeU32(state), low, high),
ConstantU32(state, 1u));
const auto probe = state.builder.AllocateId();
state.builder.AddFunction(spv::OpSelect, TypeU32(state), probe, active, mid,
ConstantU32(state, 0u));
const auto entry = Binary(state, spv::OpIAdd, TypeU32(state), mapping,
Binary(state, spv::OpIAdd, TypeU32(state),
Binary(state, spv::OpShiftLeftLogical, TypeU32(state),
probe, ConstantU32(state, 1u)),
ConstantU32(state, 1u)));
const auto mapped_key = LoadMapping(entry);
const auto candidate = LoadMapping(
Binary(state, spv::OpIAdd, TypeU32(state), entry, ConstantU32(state, 1u)));
const auto equal = Binary(state, spv::OpIEqual, TypeBool(state), mapped_key, key);
const auto match = Binary(state, spv::OpLogicalAnd, TypeBool(state), active, equal);
const auto next_selected = state.builder.AllocateId();
state.builder.AddFunction(spv::OpSelect, TypeU32(state), next_selected, match,
candidate, selected);
selected = next_selected;
const auto less = Binary(state, spv::OpULessThan, TypeBool(state), mapped_key, key);
const auto take_upper = Binary(state, spv::OpLogicalAnd, TypeBool(state), active, less);
const auto take_lower = Binary(state, spv::OpLogicalAnd, TypeBool(state), active,
Unary(state, spv::OpLogicalNot, TypeBool(state), less));
const auto next_low = state.builder.AllocateId();
state.builder.AddFunction(
spv::OpSelect, TypeU32(state), next_low, take_upper,
Binary(state, spv::OpIAdd, TypeU32(state), mid, ConstantU32(state, 1u)), low);
low = next_low;
const auto next_high = state.builder.AllocateId();
state.builder.AddFunction(spv::OpSelect, TypeU32(state), next_high, take_lower, mid,
high);
high = next_high;
}
const auto selected = EmitIndirectResourceIndex(
state, key, image.indirect_mapping_offset, image.indirect_search_iterations, 0u);
const auto default_label = state.builder.AllocateId();
const auto merge_label = state.builder.AllocateId();
std::vector<uint32_t> labels(image.indirect_resources.size() - 1u);