#include #include using namespace metal; struct Inputs { }; struct Outputs { float4 sk_FragColor [[color(0)]]; }; fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { Outputs _out; (void)_out; float4 x = float4(1.0, 1.0, 1.0, 1.0); while (x.w == 1.0) { x.x = x.x - 0.25; if (x.x <= 0.0) break; } while (x.z > 0.0) { x.z = x.z - 0.25; if (x.w == 1.0) continue; x.y = 0.0; } _out.sk_FragColor = x; return _out; }