tests/sksl/blend/BlendHue.metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Inputs {
    float4 src;
    float4 dst;
};
struct Outputs {
    float4 sk_FragColor [[color(0)]];
};
float3 _blend_set_color_saturation_helper(float3 minMidMax, float sat) {
    if (minMidMax.x < minMidMax.z) {
        float _19_n = sat * (minMidMax.y - minMidMax.x);
        float _20_d = minMidMax.z - minMidMax.x;
        return float3(0.0, _19_n / _20_d, sat);

    } else {
        return float3(0.0);
    }
}


fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
    Outputs _out;
    (void)_out;
    float _1_alpha = _in.dst.w * _in.src.w;
    float3 _2_sda = _in.src.xyz * _in.dst.w;
    float3 _3_dsa = _in.dst.xyz * _in.src.w;
    float3 _4_blend_set_color_saturation;
    float _5_sat = max(max(_3_dsa.x, _3_dsa.y), _3_dsa.z) - min(min(_3_dsa.x, _3_dsa.y), _3_dsa.z);

    if (_2_sda.x <= _2_sda.y) {
        if (_2_sda.y <= _2_sda.z) {
            _4_blend_set_color_saturation = _blend_set_color_saturation_helper(_2_sda, _5_sat);
        } else if (_2_sda.x <= _2_sda.z) {
            _4_blend_set_color_saturation = _blend_set_color_saturation_helper(_2_sda.xzy, _5_sat).xzy;
        } else {
            _4_blend_set_color_saturation = _blend_set_color_saturation_helper(_2_sda.zxy, _5_sat).yzx;
        }
    } else if (_2_sda.x <= _2_sda.z) {
        _4_blend_set_color_saturation = _blend_set_color_saturation_helper(_2_sda.yxz, _5_sat).yxz;
    } else if (_2_sda.y <= _2_sda.z) {
        _4_blend_set_color_saturation = _blend_set_color_saturation_helper(_2_sda.yzx, _5_sat).zxy;
    } else {
        _4_blend_set_color_saturation = _blend_set_color_saturation_helper(_2_sda.zyx, _5_sat).zyx;
    }
    float3 _6_blend_set_color_luminance;
    float _7_lum = dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _3_dsa);

    float3 _8_result = (_7_lum - dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _4_blend_set_color_saturation)) + _4_blend_set_color_saturation;

    float _9_minComp = min(min(_8_result.x, _8_result.y), _8_result.z);
    float _10_maxComp = max(max(_8_result.x, _8_result.y), _8_result.z);
    if (_9_minComp < 0.0 && _7_lum != _9_minComp) {
        float _11_d = _7_lum - _9_minComp;
        _8_result = _7_lum + (_8_result - _7_lum) * (_7_lum / _11_d);

    }
    if (_10_maxComp > _1_alpha && _10_maxComp != _7_lum) {
        float3 _12_n = (_8_result - _7_lum) * (_1_alpha - _7_lum);
        float _13_d = _10_maxComp - _7_lum;
        _6_blend_set_color_luminance = _7_lum + _12_n / _13_d;

    } else {
        _6_blend_set_color_luminance = _8_result;
    }
    _out.sk_FragColor = float4((((_6_blend_set_color_luminance + _in.dst.xyz) - _3_dsa) + _in.src.xyz) - _2_sda, (_in.src.w + _in.dst.w) - _1_alpha);



    return _out;
}