Merge pull request #6585 from ameerj/hades

Shader Decompiler Rewrite

1 files changed, 54 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/vote.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/vote.cpp
new file mode 100644
index 000000000..7ce370f09
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/vote.cpp
@@ -0,0 +1,54 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/bit_field.h"
+#include "common/common_types.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
+
+namespace Shader::Maxwell {
+namespace {
+enum class VoteOp : u64 {
+    ALL,
+    ANY,
+    EQ,
+};
+
+[[nodiscard]] IR::U1 VoteOperation(IR::IREmitter& ir, const IR::U1& pred, VoteOp vote_op) {
+    switch (vote_op) {
+    case VoteOp::ALL:
+        return ir.VoteAll(pred);
+    case VoteOp::ANY:
+        return ir.VoteAny(pred);
+    case VoteOp::EQ:
+        return ir.VoteEqual(pred);
+    default:
+        throw NotImplementedException("Invalid VOTE op {}", vote_op);
+    }
+}
+
+void Vote(TranslatorVisitor& v, u64 insn) {
+    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;
+        BitField<48, 2, VoteOp> vote_op;
+    } const vote{insn};
+
+    const IR::U1 vote_pred{v.ir.GetPred(vote.pred_a, vote.neg_pred_a != 0)};
+    v.ir.SetPred(vote.pred_b, VoteOperation(v.ir, vote_pred, vote.vote_op));
+    v.X(vote.dest_reg, v.ir.SubgroupBallot(vote_pred));
+}
+} // Anonymous namespace
+
+void TranslatorVisitor::VOTE(u64 insn) {
+    Vote(*this, insn);
+}
+
+void TranslatorVisitor::VOTE_vtg(u64) {
+    LOG_WARNING(Shader, "(STUBBED) called");
+}
+
+} // namespace Shader::Maxwell