ece1d794b9
This will be implemented in Metal and SPIR-V in followup CLs. Change-Id: I397b4db40b15dd54cf1d8a17f414c3fe184b48d2 Bug: skia:10851 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/387638 Auto-Submit: John Stiles <johnstiles@google.com> Commit-Queue: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
21 lines
956 B
GLSL
21 lines
956 B
GLSL
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out vec4 sk_FragColor;
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uniform vec4 src;
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uniform vec4 dst;
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float _soft_light_component_hh2h2(vec2 s, vec2 d) {
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if (2.0 * s.x <= s.y) {
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return (((d.x * d.x) * (s.y - 2.0 * s.x)) / d.y + (1.0 - d.y) * s.x) + d.x * ((-s.y + 2.0 * s.x) + 1.0);
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} else if (4.0 * d.x <= d.y) {
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float DSqd = d.x * d.x;
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float DCub = DSqd * d.x;
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float DaSqd = d.y * d.y;
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float DaCub = DaSqd * d.y;
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return (((DaSqd * (s.x - d.x * ((3.0 * s.y - 6.0 * s.x) - 1.0)) + ((12.0 * d.y) * DSqd) * (s.y - 2.0 * s.x)) - (16.0 * DCub) * (s.y - 2.0 * s.x)) - DaCub * s.x) / DaSqd;
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} else {
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return ((d.x * ((s.y - 2.0 * s.x) + 1.0) + s.x) - sqrt(d.y * d.x) * (s.y - 2.0 * s.x)) - d.y * s.x;
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}
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}
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void main() {
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sk_FragColor = dst.w == 0.0 ? src : vec4(_soft_light_component_hh2h2(src.xw, dst.xw), _soft_light_component_hh2h2(src.yw, dst.yw), _soft_light_component_hh2h2(src.zw, dst.zw), src.w + (1.0 - src.w) * dst.w);
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}
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