| #include <metal_stdlib> |
| #include <simd/simd.h> |
| using namespace metal; |
| struct Inputs { |
| float a; |
| float b; |
| float c; |
| float4 d; |
| float4 e; |
| }; |
| struct Outputs { |
| float4 sk_FragColor [[color(0)]]; |
| }; |
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| fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { |
| Outputs _outputStruct; |
| thread Outputs* _out = &_outputStruct; |
| _out->sk_FragColor.x = (refract(float2(_in.a, 0), float2(_in.b, 0), _in.c).x); |
| _out->sk_FragColor = refract(_in.d, _in.e, _in.c); |
| return *_out; |
| } |