diff --git a/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.cpp b/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.cpp
index 7afbf4bab5..be52bab93a 100644
--- a/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.cpp
+++ b/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.cpp
@@ -51,6 +51,27 @@ std::string D3D12VertexProgramDecompiler::getFunction(enum class FUNCTION f)
 	}
 }
 
+std::string D3D12VertexProgramDecompiler::compareFunction(COMPARE f, const std::string &Op0, const std::string &Op1)
+{
+	switch (f)
+	{
+	default:
+		abort();
+	case COMPARE::FUNCTION_SEQ:
+		return "(" + Op0 + " == " + Op1 + ".xxxx";
+	case COMPARE::FUNCTION_SGE:
+		return "(" + Op0 + " >= " + Op1 + ").xxxx";
+	case COMPARE::FUNCTION_SGT:
+		return "(" + Op0 + " > " + Op1 + ").xxxx";
+	case COMPARE::FUNCTION_SLE:
+		return "(" + Op0 + " <= " + Op1 + ").xxxx";
+	case COMPARE::FUNCTION_SLT:
+		return "(" + Op0 + " < " + Op1 + ").xxxx";
+	case COMPARE::FUNCTION_SNE:
+		return "(" + Op0 + " != " + Op1 + ").xxxx";
+	}
+}
+
 void D3D12VertexProgramDecompiler::insertHeader(std::stringstream &OS)
 {
 	OS << "cbuffer SCALE_OFFSET : register(b0)" << std::endl;
diff --git a/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.h b/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.h
index 0c5fcdce52..d61642c18b 100644
--- a/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.h
+++ b/rpcs3/Emu/RSX/D3D12/D3D12VertexProgramDecompiler.h
@@ -9,6 +9,7 @@ struct D3D12VertexProgramDecompiler : public VertexProgramDecompiler
 protected:
 	virtual std::string getFloatTypeName(size_t elementCount) override;
 	virtual std::string getFunction(enum class FUNCTION) override;
+	virtual std::string compareFunction(enum class COMPARE, const std::string &, const std::string &) override;
 
 	virtual void insertHeader(std::stringstream &OS);
 	virtual void insertInputs(std::stringstream &OS, const std::vector<ParamType> &inputs);