1uniform half4 pos1, pos2; 2uniform half4 colorGreen, colorRed; 3 4half4 main(float2 coords) { 5 const half4 constPos1 = half4(8, -3, 4, 14); 6 const half4 constPos2 = half4(5, -3, 0, 2); 7 half4 expected = half4(3, 3, 5, 13); 8 9 return (distance(pos1.x, pos2.x) == expected.x && 10 distance(pos1.xy, pos2.xy) == expected.y && 11 distance(pos1.xyz, pos2.xyz) == expected.z && 12 distance(pos1.xyzw, pos2.xyzw) == expected.w && 13 distance(constPos1.x, constPos2.x) == expected.x && 14 distance(constPos1.xy, constPos2.xy) == expected.y && 15 distance(constPos1.xyz, constPos2.xyz) == expected.z && 16 distance(constPos1.xyzw, constPos2.xyzw) == expected.w) ? colorGreen : colorRed; 17} 18