1#include <metal_stdlib> 2#include <simd/simd.h> 3#ifdef __clang__ 4#pragma clang diagnostic ignored "-Wall" 5#endif 6using namespace metal; 7constant const half sk_PrivkGuardedDivideEpsilon = half(false ? 1e-08 : 0.0); 8constant const half sk_PrivkMinNormalHalf = 6.10351562e-05h; 9struct Uniforms { 10 half4 src; 11 half4 dst; 12}; 13struct Inputs { 14}; 15struct Outputs { 16 half4 sk_FragColor [[color(0)]]; 17}; 18half guarded_divide_Qhhh(half n, half d); 19half color_dodge_component_Qhh2h2(half2 s, half2 d); 20half guarded_divide_Qhhh(half n, half d) { 21 return n / (d + sk_PrivkGuardedDivideEpsilon); 22} 23half color_dodge_component_Qhh2h2(half2 s, half2 d) { 24 half dxScale = half(d.x == 0.0h ? 0 : 1); 25 half delta = dxScale * min(d.y, abs(s.y - s.x) >= sk_PrivkMinNormalHalf ? guarded_divide_Qhhh(d.x * s.y, s.y - s.x) : d.y); 26 return (delta * s.y + s.x * (1.0h - d.y)) + d.x * (1.0h - s.y); 27} 28fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { 29 Outputs _out; 30 (void)_out; 31 _out.sk_FragColor = half4(color_dodge_component_Qhh2h2(_uniforms.src.xw, _uniforms.dst.xw), color_dodge_component_Qhh2h2(_uniforms.src.yw, _uniforms.dst.yw), color_dodge_component_Qhh2h2(_uniforms.src.zw, _uniforms.dst.zw), _uniforms.src.w + (1.0h - _uniforms.src.w) * _uniforms.dst.w); 32 return _out; 33} 34