73122aa45f
Fixes another instance of anglebug.com/2098 with advanced blend functions. Change-Id: I91863723d8b4c33ab2f5a527fe0374e8947bba16 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368813 Reviewed-by: Michael Ludwig <michaelludwig@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
44 lines
1.5 KiB
Metal
44 lines
1.5 KiB
Metal
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct Inputs {
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float4 src;
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float4 dst;
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};
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struct Outputs {
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float4 sk_FragColor [[color(0)]];
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};
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fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
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Outputs _out;
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(void)_out;
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float _1_alpha = _in.dst.w * _in.src.w;
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float3 _2_sda = _in.src.xyz * _in.dst.w;
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float3 _3_dsa = _in.dst.xyz * _in.src.w;
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float3 _4_blend_set_color_luminance;
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float _5_lum = dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _2_sda);
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float3 _6_result = (_5_lum - dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _3_dsa)) + _3_dsa;
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float _7_minComp = min(min(_6_result.x, _6_result.y), _6_result.z);
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float _8_maxComp = max(max(_6_result.x, _6_result.y), _6_result.z);
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if (_7_minComp < 0.0 && _5_lum != _7_minComp) {
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float _9_d = _5_lum - _7_minComp;
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_6_result = _5_lum + (_6_result - _5_lum) * (_5_lum / _9_d);
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}
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if (_8_maxComp > _1_alpha && _8_maxComp != _5_lum) {
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float3 _10_n = (_6_result - _5_lum) * (_1_alpha - _5_lum);
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float _11_d = _8_maxComp - _5_lum;
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_4_blend_set_color_luminance = _5_lum + _10_n / _11_d;
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} else {
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_4_blend_set_color_luminance = _6_result;
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}
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_out.sk_FragColor = float4((((_4_blend_set_color_luminance + _in.dst.xyz) - _3_dsa) + _in.src.xyz) - _2_sda, (_in.src.w + _in.dst.w) - _1_alpha);
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return _out;
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}
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