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graphics: render packed 11-11-10 UNorm targets with exact rounding

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Co-authored-by: fxpw <fxpw@outlook.com>
This commit is contained in:
nmzik
2026-10-15 04:35:56 +02:00
parent fb213e8ae5
commit b4406b0467
11 changed files with 291 additions and 10 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterFlow.cpp
+22
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@@ -567,6 +567,28 @@ void EmitSetAttribute(ValueEmitContext& ctx, const IR::Inst& inst) {
mapping.Map(3));
value = mapped;
}
if ((state.input_info.pixel->target_packed_unorm_mask & (1u << exp.index)) != 0u) {
if (exp.compr || MrtOutputMode(state, exp) != 9u ||
(mapping.ApplyMask(exp.en) & 7u) != 7u) {
EXIT("unsupported packed UNorm EXP: export=%u mode=%u en=0x%x compr=%u\n",
exp.index, MrtOutputMode(state, exp), exp.en, static_cast<uint32_t>(exp.compr));
}
const auto info = Format::GetFormatInfo(Prospero::BufferFormat::k11_11_10UNorm);
const auto rounding = (state.input_info.pixel->target_round_mode & (1u << exp.index)) != 0
? UnormRounding::Truncate : UnormRounding::HalfUp;
const auto raw = Unary(state, spv::OpBitcast, TypeU32Vector(state, 4), value);
auto packed = ConstantU32(state, 0);
for (uint32_t component = 0; component < info.component_count; component++) {
const auto encoded = EncodePackedColorComponent(
state, info, component, ExportRawComponent(ctx, raw, component), 32u, rounding);
packed = component == 0u ? encoded
: Binary(state, spv::OpBitwiseOr, TypeU32(state), packed, encoded);
}
value = state.builder.AllocateId();
state.builder.AddFunction(spv::OpCompositeConstruct, TypeU32Vector(state, 4), value,
packed, ConstantU32(state, 0), ConstantU32(state, 0),
ConstantU32(state, 0));
}
}
if (exp.kind == IR::ExportTargetKind::Position &&
state.input_info.vertex->clip_space.enabled) {