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graphics: preserve logical alpha when blending reordered targets (PPSA02721)

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Co-authored-by: EmK530 <admin@emk530.net>
This commit is contained in:
nmzik
2026-09-29 19:48:07 +04:00
parent 6799ecbc5b
commit 73615c31ff
10 changed files with 280 additions and 20 deletions
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src/graphics/shader/recompiler/ir/passes/ShaderInfoCollection.cpp
+8
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@@ -326,6 +326,8 @@ void CollectBuiltinInputs(const Program& program, ShaderInfo& info) {
}
void CollectOutputs(const Program& program, ShaderStageInputInfo input_info, ShaderInfo& info) {
const bool alpha_remap = program.stage == ShaderType::Pixel && input_info.pixel != nullptr &&
input_info.pixel->alpha_blend_source_remap;
for (const auto* block: program.blocks) {
for (const auto& inst: *block) {
if (inst.GetOpcode() != ValueOpcode::SetAttribute) {
@@ -385,8 +387,14 @@ void CollectOutputs(const Program& program, ShaderStageInputInfo input_info, Sha
export_info.index, fmt::format("out_param_{}", export_info.index));
break;
case ExportTargetKind::Mrt:
if (alpha_remap && export_info.index != 0) {
break;
}
AddOutput(info, StageOutputKind::Mrt, export_info.index, export_info.index,
fmt::format("out_mrt_{}", export_info.index));
if (alpha_remap) {
AddOutput(info, StageOutputKind::Mrt, 1, 1, "out_mrt_1");
}
break;
default: break;
}