#include #include using namespace metal; struct Uniforms { half4 src; half4 dst; }; struct Inputs { }; struct Outputs { half4 sk_FragColor [[color(0)]]; }; fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { Outputs _out; (void)_out; _out.sk_FragColor = _uniforms.dst.w * _uniforms.src + (1.0h - _uniforms.src.w) * _uniforms.dst; return _out; }