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Convert formatted half-float buffer stores from F32

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Co-authored-by: TarkusR <90155059+TarkusR@users.noreply.github.com>
This commit is contained in:
nmzik
2026-09-24 07:07:31 +04:00
parent 3bd5de646d
commit a6248c7c7c
3 changed files with 57 additions and 5 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterMemory.cpp
+7 -3
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@@ -710,10 +710,14 @@ void StoreFormattedInBounds(ValueEmitContext& ctx, const IR::MemoryInfo& mem,
uint32_t data) {
if (component >= plan.info.component_count) return;
const auto bits = plan.info.component_bits[component];
if (plan.info.type == Format::ComponentType::Snorm && bits == 16u) {
if (bits == 16u && (plan.info.type == Format::ComponentType::Snorm ||
plan.info.type == Format::ComponentType::Float)) {
const auto value = EmitBitCastF32U32(ctx.state, data);
data = EmitPackSnorm2x16(
ctx.state, EmitCompositeConstructF32x2(ctx.state, value, ConstantF32Value(ctx.state, 0.0f)));
const auto pair = EmitCompositeConstructF32x2(ctx.state, value,
ConstantF32Value(ctx.state, 0.0f));
data = plan.info.type == Format::ComponentType::Float
? EmitPackHalf2x16(ctx.state, pair)
: EmitPackSnorm2x16(ctx.state, pair);
}
if (bits == 8u || bits == 16u) {
StoreSubwordInBounds(ctx, mem, plan.resource, plan.addresses[component],