1 2out vec4 sk_FragColor; 3uniform vec4 color; 4vec4 main() { 5 float _1_c = color.x * color.y + color.z; 6 float a = _1_c; 7 float _2_c = color.y * color.z + color.w; 8 float b = _2_c; 9 float _3_c = color.z * color.w + color.x; 10 float c = _3_c; 11 return vec4(a, b, c * c, a * (b * c)); 12} 13