 				float maxv = Left ? 1 : 1;
 
 				return float2( lerp(minu,maxu,uv.x), lerp(minv,maxv,uv.y) );
+#else
+				return uv;
+#endif
 			}
 
 

			};

			sampler2D _MainTex;
			float4 _MainTex_ST;




			float2 MonoUvToStereoUv(float2 uv)
			{
#ifdef ENABLE_STERE0
				bool Left = IsStereoLeftEye();
				float minu = Left ? 0 : 0.5f;
				float maxu = Left ? 0.5f : 1.0f;
