| #include <metal_stdlib> |
| #include <simd/simd.h> |
| using namespace metal; |
| struct Inputs { |
| float4 src; |
| float4 dst; |
| }; |
| struct Outputs { |
| float4 sk_FragColor [[color(0)]]; |
| }; |
| |
| |
| fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { |
| Outputs _outputStruct; |
| thread Outputs* _out = &_outputStruct; |
| float4 _0_blend_saturation; |
| { |
| 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_17_blend_color_saturation; |
| { |
| _5_17_blend_color_saturation = max(max(_2_sda.x, _2_sda.y), _2_sda.z) - min(min(_2_sda.x, _2_sda.y), _2_sda.z); |
| } |
| float _6_sat = _5_17_blend_color_saturation; |
| |
| if (_3_dsa.x <= _3_dsa.y) { |
| if (_3_dsa.y <= _3_dsa.z) { |
| float3 _7_18_blend_set_color_saturation_helper; |
| { |
| _7_18_blend_set_color_saturation_helper = _3_dsa.x < _3_dsa.z ? float3(0.0, (_6_sat * (_3_dsa.y - _3_dsa.x)) / (_3_dsa.z - _3_dsa.x), _6_sat) : float3(0.0); |
| } |
| _4_blend_set_color_saturation = _7_18_blend_set_color_saturation_helper; |
| |
| } else if (_3_dsa.x <= _3_dsa.z) { |
| float3 _8_19_blend_set_color_saturation_helper; |
| { |
| _8_19_blend_set_color_saturation_helper = _3_dsa.x < _3_dsa.y ? float3(0.0, (_6_sat * (_3_dsa.z - _3_dsa.x)) / (_3_dsa.y - _3_dsa.x), _6_sat) : float3(0.0); |
| } |
| _4_blend_set_color_saturation = _8_19_blend_set_color_saturation_helper.xzy; |
| |
| } else { |
| float3 _9_20_blend_set_color_saturation_helper; |
| { |
| _9_20_blend_set_color_saturation_helper = _3_dsa.z < _3_dsa.y ? float3(0.0, (_6_sat * (_3_dsa.x - _3_dsa.z)) / (_3_dsa.y - _3_dsa.z), _6_sat) : float3(0.0); |
| } |
| _4_blend_set_color_saturation = _9_20_blend_set_color_saturation_helper.yzx; |
| |
| } |
| } else if (_3_dsa.x <= _3_dsa.z) { |
| float3 _10_21_blend_set_color_saturation_helper; |
| { |
| _10_21_blend_set_color_saturation_helper = _3_dsa.y < _3_dsa.z ? float3(0.0, (_6_sat * (_3_dsa.x - _3_dsa.y)) / (_3_dsa.z - _3_dsa.y), _6_sat) : float3(0.0); |
| } |
| _4_blend_set_color_saturation = _10_21_blend_set_color_saturation_helper.yxz; |
| |
| } else if (_3_dsa.y <= _3_dsa.z) { |
| float3 _11_22_blend_set_color_saturation_helper; |
| { |
| _11_22_blend_set_color_saturation_helper = _3_dsa.y < _3_dsa.x ? float3(0.0, (_6_sat * (_3_dsa.z - _3_dsa.y)) / (_3_dsa.x - _3_dsa.y), _6_sat) : float3(0.0); |
| } |
| _4_blend_set_color_saturation = _11_22_blend_set_color_saturation_helper.zxy; |
| |
| } else { |
| float3 _12_23_blend_set_color_saturation_helper; |
| { |
| _12_23_blend_set_color_saturation_helper = _3_dsa.z < _3_dsa.x ? float3(0.0, (_6_sat * (_3_dsa.y - _3_dsa.z)) / (_3_dsa.x - _3_dsa.z), _6_sat) : float3(0.0); |
| } |
| _4_blend_set_color_saturation = _12_23_blend_set_color_saturation_helper.zyx; |
| |
| } |
| } |
| float3 _13_blend_set_color_luminance; |
| { |
| float _14_15_blend_color_luminance; |
| { |
| _14_15_blend_color_luminance = dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _3_dsa); |
| } |
| float _15_lum = _14_15_blend_color_luminance; |
| |
| float _16_16_blend_color_luminance; |
| { |
| _16_16_blend_color_luminance = dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _4_blend_set_color_saturation); |
| } |
| float3 _17_result = (_15_lum - _16_16_blend_color_luminance) + _4_blend_set_color_saturation; |
| |
| float _18_minComp = min(min(_17_result.x, _17_result.y), _17_result.z); |
| float _19_maxComp = max(max(_17_result.x, _17_result.y), _17_result.z); |
| if (_18_minComp < 0.0 && _15_lum != _18_minComp) { |
| _17_result = _15_lum + ((_17_result - _15_lum) * _15_lum) / (_15_lum - _18_minComp); |
| } |
| _13_blend_set_color_luminance = _19_maxComp > _1_alpha && _19_maxComp != _15_lum ? _15_lum + ((_17_result - _15_lum) * (_1_alpha - _15_lum)) / (_19_maxComp - _15_lum) : _17_result; |
| } |
| _0_blend_saturation = float4((((_13_blend_set_color_luminance + _in.dst.xyz) - _3_dsa) + _in.src.xyz) - _2_sda, (_in.src.w + _in.dst.w) - _1_alpha); |
| |
| |
| } |
| _out->sk_FragColor = _0_blend_saturation; |
| |
| return *_out; |
| } |