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shaders: Some more changes in rgb2hsl. (#3834)

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Dickby 2023-11-12 17:20:23 +01:00 committed by GitHub
parent 47d46aa56c
commit e974d1fe98
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1 changed files with 5 additions and 4 deletions
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9
src/render/shaders/Textures.hpp
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@ -234,11 +234,11 @@ vec3 rgb2hsl(vec3 col) {
sat = delta / (mul * 2.0);
}
vec3 masks = vec3((maxc == red && maxc != green) ? 1.0 : 0.0, (maxc == green && maxc != blue) ? 1.0 : 0.0, (maxc == blue && maxc != red) ? 1.0 : 0.0);
vec3 adds = vec3(((green - blue) / delta), 2.0 + ((blue - red) / delta), 4.0 + ((red - green) / delta));
if (delta > 0.0) {
vec3 maxcVec = vec3(maxc);
vec3 masks = vec3(equal(maxcVec, col)) * vec3(notEqual(maxcVec, vec3(green, blue, red)));
vec3 adds = vec3(0.0, 2.0, 4.0) + vec3(green - blue, blue - red, red - green) / delta;
hue += dot(adds, masks);
hue /= 6.0;
@ -248,6 +248,7 @@ vec3 rgb2hsl(vec3 col) {
return vec3(hue, sat, lum);
}
vec3 hsl2rgb(vec3 col) {
const float onethird = 1.0 / 3.0;
const float twothird = 2.0 / 3.0;