// Runtime color filters require specific main signatures. Test that older signatures, or those
// intended for shaders don't work.

// Expect 4 errors

half4 main() { return half(1); }
half4 main(float2 coord) { return half4(1); }
half4 main(float2 coord, half4 color) { return color; }
half4 main(half4 color, half4 bonusColor) { return color; }

half4 main(half4 color) { return color; }  // the correct signature is allowed