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>
75 lines
2.6 KiB
GLSL
75 lines
2.6 KiB
GLSL
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out vec4 sk_FragColor;
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uniform vec4 color;
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vec3 _blend_set_color_luminance(vec3 hueSatColor, float alpha, vec3 lumColor) {
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float lum = dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), lumColor);
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vec3 result = (lum - dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), hueSatColor)) + hueSatColor;
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float minComp = min(min(result.x, result.y), result.z);
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float maxComp = max(max(result.x, result.y), result.z);
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if (minComp < 0.0 && lum != minComp) {
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float _14_d = lum - minComp;
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result = lum + (result - lum) * (lum / _14_d);
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}
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if (maxComp > alpha && maxComp != lum) {
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vec3 _16_n = (result - lum) * (alpha - lum);
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float _17_d = maxComp - lum;
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return lum + _16_n / _17_d;
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} else {
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return result;
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}
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}
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vec3 _blend_set_color_saturation_helper(vec3 minMidMax, float sat) {
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if (minMidMax.x < minMidMax.z) {
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float _19_n = sat * (minMidMax.y - minMidMax.x);
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float _20_d = minMidMax.z - minMidMax.x;
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return vec3(0.0, _19_n / _20_d, sat);
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} else {
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return vec3(0.0);
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}
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}
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vec3 _blend_set_color_saturation(vec3 hueLumColor, vec3 satColor) {
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float sat = max(max(satColor.x, satColor.y), satColor.z) - min(min(satColor.x, satColor.y), satColor.z);
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if (hueLumColor.x <= hueLumColor.y) {
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if (hueLumColor.y <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor, sat);
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} else if (hueLumColor.x <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor.xzy, sat).xzy;
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} else {
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return _blend_set_color_saturation_helper(hueLumColor.zxy, sat).yzx;
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}
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} else if (hueLumColor.x <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor.yxz, sat).yxz;
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} else if (hueLumColor.y <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor.yzx, sat).zxy;
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} else {
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return _blend_set_color_saturation_helper(hueLumColor.zyx, sat).zyx;
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}
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}
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vec4 blend_hue(vec4 src, vec4 dst) {
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float alpha = dst.w * src.w;
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vec3 sda = src.xyz * dst.w;
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vec3 dsa = dst.xyz * src.w;
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return vec4((((_blend_set_color_luminance(_blend_set_color_saturation(sda, dsa), alpha, dsa) + dst.xyz) - dsa) + src.xyz) - sda, (src.w + dst.w) - alpha);
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}
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void main() {
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float _7_a = color.x * color.y;
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float _8_c = _7_a + color.z;
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sk_FragColor = vec4(_8_c);
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sk_FragColor *= 1.25;
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sk_FragColor *= color.xxyy * color.w;
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sk_FragColor *= color.zzww * color.y;
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sk_FragColor *= blend_hue(color, color.wwww);
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sk_FragColor *= blend_hue(color, color.wzyx);
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}
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