fixed4 frag (v2f i) : SV_Target
            {
                float mainCamD = Linear01Depth(tex2D(_MainCamTex, i.uv).r);
                float outlineCamD = Linear01Depth(tex2D(_OutlineCamTex, i.uv).r);
                fixed4 c = fixed4(0.0,0.0,0.0,1.0);
                if (mainCamD != outlineCamD)
                {
                    c.r = 1.0;
                }
                return c;
            }