1#include <metal_stdlib> 2#include <simd/simd.h> 3using namespace metal; 4constant const half sk_PrivkGuardedDivideEpsilon = half(false ? 1e-08 : 0.0); 5struct Uniforms { 6 half4 src; 7 half4 dst; 8}; 9struct Inputs { 10}; 11struct Outputs { 12 half4 sk_FragColor [[color(0)]]; 13}; 14half color_burn_component_Qhh2h2(half2 s, half2 d); 15half color_burn_component_Qhh2h2(half2 s, half2 d) { 16 if (d.y == d.x) { 17 return (s.y * d.y + s.x * (1.0h - d.y)) + d.x * (1.0h - s.y); 18 } else if (s.x == 0.0h) { 19 return d.x * (1.0h - s.y); 20 } else { 21 half delta = max(0.0h, d.y - ((d.y - d.x) * s.y) / (s.x + sk_PrivkGuardedDivideEpsilon)); 22 return (delta * s.y + s.x * (1.0h - d.y)) + d.x * (1.0h - s.y); 23 } 24} 25fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { 26 Outputs _out; 27 (void)_out; 28 _out.sk_FragColor = half4(color_burn_component_Qhh2h2(_uniforms.src.xw, _uniforms.dst.xw), color_burn_component_Qhh2h2(_uniforms.src.yw, _uniforms.dst.yw), color_burn_component_Qhh2h2(_uniforms.src.zw, _uniforms.dst.zw), _uniforms.src.w + (1.0h - _uniforms.src.w) * _uniforms.dst.w); 29 return _out; 30} 31