10e21844a7
These functions were functionally almost identical, except:
- Sometimes sda/dsa are flipped
- Sometimes the saturation is not updated
We now have one method (blend_hslc) which can do all four blend
operations. It takes two new parameters ("flip" and "saturate") to
handle these four variations.
This reduces our shader count on some of our most shader-heavy slides
(e.g. aaxfermodes, xfermodeimagefilter) at a pretty reasonable cost.
Change-Id: Ifa8a48399851a9badb5d50038de1e25e60d44ebd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/527281
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
54 lines
2.5 KiB
GLSL
54 lines
2.5 KiB
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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vec3 blend_set_color_saturation_helper_Qh3h3h(vec3 minMidMax, float sat) {
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vec2 delta = minMidMax.yz - minMidMax.xx;
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return delta.y >= 9.9999997473787516e-06 ? vec3(0.0, (delta.x / delta.y) * sat, sat) : vec3(0.0);
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}
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vec4 blend_hslc_h4h4h4hb(vec4 src, vec4 dst, float flip, bool saturate) {
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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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vec3 l = mix(sda, dsa, flip);
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vec3 r = mix(dsa, sda, flip);
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if (saturate) {
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vec3 _1_blend_set_color_saturation;
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float _2_sat = max(max(r.x, r.y), r.z) - min(min(r.x, r.y), r.z);
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if (l.x <= l.y) {
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if (l.y <= l.z) {
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_1_blend_set_color_saturation = blend_set_color_saturation_helper_Qh3h3h(l, _2_sat);
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} else if (l.x <= l.z) {
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_1_blend_set_color_saturation = blend_set_color_saturation_helper_Qh3h3h(l.xzy, _2_sat).xzy;
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} else {
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_1_blend_set_color_saturation = blend_set_color_saturation_helper_Qh3h3h(l.zxy, _2_sat).yzx;
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}
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} else if (l.x <= l.z) {
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_1_blend_set_color_saturation = blend_set_color_saturation_helper_Qh3h3h(l.yxz, _2_sat).yxz;
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} else if (l.y <= l.z) {
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_1_blend_set_color_saturation = blend_set_color_saturation_helper_Qh3h3h(l.yzx, _2_sat).zxy;
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} else {
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_1_blend_set_color_saturation = blend_set_color_saturation_helper_Qh3h3h(l.zyx, _2_sat).zyx;
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}
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l = _1_blend_set_color_saturation;
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r = dsa;
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}
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vec3 _3_blend_set_color_luminance;
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float _4_lum = dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), r);
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vec3 _5_result = (_4_lum - dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), l)) + l;
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float _6_minComp = min(min(_5_result.x, _5_result.y), _5_result.z);
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float _7_maxComp = max(max(_5_result.x, _5_result.y), _5_result.z);
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if (_6_minComp < 0.0 && _4_lum != _6_minComp) {
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_5_result = _4_lum + (_5_result - _4_lum) * (_4_lum / (_4_lum - _6_minComp));
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}
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if (_7_maxComp > alpha && _7_maxComp != _4_lum) {
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_3_blend_set_color_luminance = _4_lum + ((_5_result - _4_lum) * (alpha - _4_lum)) / (_7_maxComp - _4_lum);
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} else {
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_3_blend_set_color_luminance = _5_result;
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}
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return vec4((((_3_blend_set_color_luminance + 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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sk_FragColor = blend_hslc_h4h4h4hb(src, dst, 1.0, true);
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}
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