Use mix for vector types in switch node in the visual shader

scene/resources/visual_shader_nodes.cpp

@@ -6923,15 +6923,34 @@ void VisualShaderNodeSwitch::_bind_methods() { // static
 }
 
 String VisualShaderNodeSwitch::generate_code(Shader::Mode p_mode, VisualShader::Type p_type, int p_id, const String *p_input_vars, const String *p_output_vars, bool p_for_preview) const {
+	bool use_mix = false;
+	switch (op_type) {
+		case OP_TYPE_FLOAT: {
+			use_mix = true;
+		} break;
+		case OP_TYPE_VECTOR_2D: {
+			use_mix = true;
+		} break;
+		case OP_TYPE_VECTOR_3D: {
+			use_mix = true;
+		} break;
+		case OP_TYPE_VECTOR_4D: {
+			use_mix = true;
+		} break;
+		default: {
+		} break;
+	}
+
 	String code;
-	code += "	if(" + p_input_vars[0] + ")\n";
-	code += "	{\n";
-	code += "		" + p_output_vars[0] + " = " + p_input_vars[1] + ";\n";
-	code += "	}\n";
-	code += "	else\n";
-	code += "	{\n";
-	code += "		" + p_output_vars[0] + " = " + p_input_vars[2] + ";\n";
-	code += "	}\n";
+	if (use_mix) {
+		code += "	" + p_output_vars[0] + " = mix(" + p_input_vars[2] + ", " + p_input_vars[1] + ", float(" + p_input_vars[0] + "));\n";
+	} else {
+		code += "	if (" + p_input_vars[0] + ") {\n";
+		code += "		" + p_output_vars[0] + " = " + p_input_vars[1] + ";\n";
+		code += "	} else {\n";
+		code += "		" + p_output_vars[0] + " = " + p_input_vars[2] + ";\n";
+		code += "	}\n";
+	}
 	return code;
 }