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shader: support packed D16 XYZW formatted buffer stores

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Co-authored-by: fxpw <fxpw@outlook.com>
This commit is contained in:
nmzik
2026-10-14 19:35:08 +02:00
parent c914435f20
commit 4843d8d942
8 changed files with 107 additions and 29 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterMemory.cpp
+7 -2
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@@ -815,18 +815,23 @@ void StoreFormattedPrepared(ValueEmitContext& ctx, const IR::Inst& inst,
uint32_t components) {
if (resource.object_pointer == 0u) return;
// RDNA2 formatted stores transfer the entire format, zero-filling missing VGPRs.
const auto count = mem.data_bits == 16u ? mem.component_count : components;
const auto plan = PrepareFormattedMemory(ctx, inst, mem, resource, info);
EmitIfCondition(ctx.state, plan.in_bounds, [&]() {
auto packed = ConstantU32(ctx.state, 0);
for (uint32_t component = 0; component < info.component_count; component++) {
auto value = ConstantU32(ctx.state, 0);
if (component < components) {
if (component < count) {
const auto word = mem.data_bits == 16u ? component / 2u : component;
value = data;
if (components != 1u) {
value = ctx.state.builder.AllocateId();
ctx.state.builder.AddFunction(spv::OpCompositeExtract, TypeU32(ctx.state),
value, data, component);
value, data, word);
}
if (mem.data_bits == 16u && (component & 1u) != 0u)
value = Binary(ctx.state, spv::OpShiftRightLogical, TypeU32(ctx.state), value,
ConstantU32(ctx.state, 16u));
}
value = EncodeFormattedStoreComponent(ctx.state, info, component, value, mem.data_bits);
const auto bits = info.component_bits[component];