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Stub VOTE_vtg implementation with warning log

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Zephyron
2025-11-12 19:16:12 +10:00
parent 16f815a7b9
commit ba9dead3ee
1 changed files with 2 additions and 19 deletions
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21
src/shader_recompiler/frontend/maxwell/translate/impl/vote.cpp
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@@ -47,25 +47,8 @@ void TranslatorVisitor::VOTE(u64 insn) {
Vote(*this, insn);
}
void TranslatorVisitor::VOTE_vtg(u64 insn) {
// VOTE instruction in vertex/tessellation/geometry shaders
// These stages process vertices independently without warp/subgroup synchronization
// In these stages, vote operations are essentially no-ops or return conservative values
union {
u64 insn;
BitField<0, 8, IR::Reg> dest_reg;
BitField<39, 3, IR::Pred> pred_a;
BitField<42, 1, u64> neg_pred_a;
BitField<45, 3, IR::Pred> pred_b;
} const vote{insn};
// In VTG shaders, each thread is independent, so:
// - "All" votes return the predicate itself (all of one thread = itself)
// - Ballot returns 1 if predicate is true, 0 otherwise (only one thread)
const IR::U1 vote_pred{ir.GetPred(vote.pred_a, vote.neg_pred_a != 0)};
ir.SetPred(vote.pred_b, vote_pred);
// Ballot for single thread: 1 if true, 0 if false
X(vote.dest_reg, IR::U32{ir.Select(vote_pred, ir.Imm32(1), ir.Imm32(0))});
void TranslatorVisitor::VOTE_vtg(u64) {
LOG_WARNING(Shader, "(STUBBED) called");
}
} // namespace Shader::Maxwell