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Implement vertex swizzle

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This commit is contained in:
nmzik
2026-07-18 03:36:09 +02:00
parent 18479daabd
commit f4b52cea2b
10 changed files with 282 additions and 195 deletions
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src/graphics/shader/recompiler/spirvEmitter/spirvEmitterValues.cpp
+20 -2
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@@ -450,7 +450,25 @@ uint32_t EmitVertexParameterComponentU32(EmitterState* state, const InputBinding
uint32_t component) {
const auto count = VertexParameterComponentCount(*state, input);
const auto kind = VertexParameterScalarKind(*state, input.location);
if (component >= count) {
uint32_t source_component = component;
if (input.location < ShaderVertexInputInfo::RES_MAX &&
input.location < static_cast<uint32_t>(state->vertex_input_info->resources_num)) {
const auto& descriptor = state->vertex_input_info->resources[input.location];
const auto selection =
DecodeVertexDstSelector(GetDstSel(descriptor.DstSelXYZW(), component & 3u));
if (selection.kind == VertexDstSelectKind::Zero) {
return ConstantU32(state, 0u);
}
if (selection.kind == VertexDstSelectKind::One) {
return ConstantU32(state,
kind == VertexInputScalarKind::Float ? 0x3f800000u : 1u);
}
if (selection.kind == VertexDstSelectKind::Reserved) {
EXIT("reserved vertex destination selector\n");
}
source_component = selection.source_component;
}
if (source_component >= count) {
return VertexInputDefaultComponentU32(state, kind, component);
}
@@ -462,7 +480,7 @@ uint32_t EmitVertexParameterComponentU32(EmitterState* state, const InputBinding
const auto pointer_type = VertexParameterScalarPointerType(*state, kind);
const auto pointer = state->builder.AllocateId();
state->builder.AddFunction({OpAccessChain, pointer_type, pointer, input.variable_id,
ConstantU32(state, component)});
ConstantU32(state, source_component)});
state->builder.AddFunction({OpLoad, scalar_type, raw, pointer});
}