tests/sksl/blend/golden/BlendColorBurn.metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Inputs {
    float4 srcdst;
};
struct Outputs {
    float4 sk_FragColor [[color(0)]];
};

float _guarded_divide(float n, float d) {
    return n / d;
}
float _color_burn_component(float2 s, float2 d) {
    if (d.y == d.x) {
        return (s.y * d.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
    } else if (s.x == 0.0) {
        return d.x * (1.0 - s.y);
    } else {
        float _1_guarded_divide;
        float _2_n = (d.y - d.x) * s.y;
        float _3_d = s.x;
        {
            _1_guarded_divide = _2_n / _3_d;
        }
        float delta = max(0.0, d.y - _1_guarded_divide);

        return (delta * s.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
    }
}
float4 blend_color_burn(float4 src, float4 dst) {
    return float4(_color_burn_component(src.xw, dst.xw), _color_burn_component(src.yw, dst.yw), _color_burn_component(src.zw, dst.zw), src.w + (1.0 - src.w) * dst.w);
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
    Outputs _outputStruct;
    thread Outputs* _out = &_outputStruct;
    float4 _0_blend_color_burn;
    {
        _0_blend_color_burn = float4(_color_burn_component(_in.src.xw, _in.dst.xw), _color_burn_component(_in.src.yw, _in.dst.yw), _color_burn_component(_in.src.zw, _in.dst.zw), _in.src.w + (1.0 - _in.src.w) * _in.dst.w);
    }

    _out->sk_FragColor = _0_blend_color_burn;

    return *_out;
}