1 files changed, 48 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/common_funcs.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/common_funcs.cpp
index 9d4ac2e36..af9a8f82c 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/common_funcs.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/common_funcs.cpp
@@ -58,4 +58,52 @@ IR::U1 PredicateOperation(IR::IREmitter& ir, const IR::U32& result, PredicateOp
     }
 }
 
+bool IsCompareOpOrdered(FPCompareOp op) {
+    switch (op) {
+    case FPCompareOp::LTU:
+    case FPCompareOp::EQU:
+    case FPCompareOp::LEU:
+    case FPCompareOp::GTU:
+    case FPCompareOp::NEU:
+    case FPCompareOp::GEU:
+        return false;
+    default:
+        return true;
+    }
+}
+
+IR::U1 FloatingPointCompare(IR::IREmitter& ir, const IR::F32& operand_1, const IR::F32& operand_2,
+                            FPCompareOp compare_op, IR::FpControl control) {
+    const bool ordered{IsCompareOpOrdered(compare_op)};
+    switch (compare_op) {
+    case FPCompareOp::F:
+        return ir.Imm1(false);
+    case FPCompareOp::LT:
+    case FPCompareOp::LTU:
+        return ir.FPLessThan(operand_1, operand_2, control, ordered);
+    case FPCompareOp::EQ:
+    case FPCompareOp::EQU:
+        return ir.FPEqual(operand_1, operand_2, control, ordered);
+    case FPCompareOp::LE:
+    case FPCompareOp::LEU:
+        return ir.FPLessThanEqual(operand_1, operand_2, control, ordered);
+    case FPCompareOp::GT:
+    case FPCompareOp::GTU:
+        return ir.FPGreaterThan(operand_1, operand_2, control, ordered);
+    case FPCompareOp::NE:
+    case FPCompareOp::NEU:
+        return ir.FPNotEqual(operand_1, operand_2, control, ordered);
+    case FPCompareOp::GE:
+    case FPCompareOp::GEU:
+        return ir.FPGreaterThanEqual(operand_1, operand_2, control, ordered);
+    case FPCompareOp::NUM:
+        return ir.FPOrdered(operand_1, operand_2);
+    case FPCompareOp::Nan:
+        return ir.FPUnordered(operand_1, operand_2);
+    case FPCompareOp::T:
+        return ir.Imm1(true);
+    default:
+        throw NotImplementedException("Invalid FP compare op {}", compare_op);
+    }
+}
 } // namespace Shader::Maxwell