1uniform half4 colorGreen, colorRed; 2 3const float3x3 values = float3x3(1); 4 5inline float3 indexMatrix(int index) { 6 return values[index]; 7} 8 9half4 main(float2 coords) { 10 float3 ok = indexMatrix(0) + indexMatrix(1) + indexMatrix(2); 11 float3 undefined = indexMatrix(-1) + indexMatrix(3); 12 return colorGreen; 13} 14