#include <metal_stdlib> | |
#include <simd/simd.h> | |
using namespace metal; | |
struct Inputs { | |
float4 src; | |
float4 dst; | |
}; | |
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; | |
_out.sk_FragColor = float4((_in.src.xyz + _in.dst.xyz) - 2.0 * min(_in.src.xyz * _in.dst.w, _in.dst.xyz * _in.src.w), _in.src.w + (1.0 - _in.src.w) * _in.dst.w); | |
return _out; | |
} |