1 files changed, 62 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp
new file mode 100644
index 000000000..b6a7b593d
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp
@@ -0,0 +1,62 @@
+// 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/common_funcs.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
+
+namespace Shader::Maxwell {
+namespace {
+void ISET(TranslatorVisitor& v, u64 insn, const IR::U32& src_a) {
+    union {
+        u64 insn;
+        BitField<0, 8, IR::Reg> dest_reg;
+        BitField<8, 8, IR::Reg> src_reg;
+        BitField<39, 3, IR::Pred> pred;
+        BitField<42, 1, u64> neg_pred;
+        BitField<43, 1, u64> x;
+        BitField<44, 1, u64> bf;
+        BitField<45, 2, BooleanOp> bop;
+        BitField<48, 1, u64> is_signed;
+        BitField<49, 3, ComparisonOp> compare_op;
+    } const iset{insn};
+
+    if (iset.x != 0) {
+        throw NotImplementedException("ISET.X");
+    }
+
+    const IR::U32 src_reg{v.X(iset.src_reg)};
+    const bool is_signed{iset.is_signed != 0};
+    IR::U1 pred{v.ir.GetPred(iset.pred)};
+    if (iset.neg_pred != 0) {
+        pred = v.ir.LogicalNot(pred);
+    }
+    const IR::U1 cmp_result{IntegerCompare(v, src_reg, src_a, iset.compare_op, is_signed)};
+    const IR::U1 bop_result{PredicateCombine(v, cmp_result, pred, iset.bop)};
+
+    const IR::U32 one_mask{v.ir.Imm32(-1)};
+    const IR::U32 fp_one{v.ir.Imm32(0x3f800000)};
+    const IR::U32 fail_result{v.ir.Imm32(0)};
+    const IR::U32 pass_result{iset.bf == 0 ? one_mask : fp_one};
+
+    const IR::U32 result{v.ir.Select(bop_result, pass_result, fail_result)};
+
+    v.X(iset.dest_reg, result);
+}
+} // Anonymous namespace
+
+void TranslatorVisitor::ISET_reg(u64 insn) {
+    ISET(*this, insn, GetReg20(insn));
+}
+
+void TranslatorVisitor::ISET_cbuf(u64 insn) {
+    ISET(*this, insn, GetCbuf(insn));
+}
+
+void TranslatorVisitor::ISET_imm(u64 insn) {
+    ISET(*this, insn, GetImm20(insn));
+}
+
+} // namespace Shader::Maxwell