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This commit is contained in:
Christopher Willis-Ford 2017-12-06 15:28:41 -08:00
parent 408b259055
commit 61c75172d0
1 changed files with 3 additions and 3 deletions
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6
src/shaders/sprite.frag
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@ -46,7 +46,7 @@ varying vec2 v_texCoord;
// See also: https://en.wikipedia.org/wiki/HSL_and_HSV#Formal_derivation
// Smaller values can cause problems with "color" and "brightness" effects on some mobile devices
const float kEpsilon = 1e-4;
const float epsilon = 1e-4;
// Convert an RGB color to Hue, Saturation, and Lightness.
// All components of input and output are expected to be in the [0,1] range.
@ -78,8 +78,8 @@ vec3 convertRGB2HSL(vec3 rgb)
float L = 0.5 * (temp2.x + m);
return vec3(
abs(temp2.z + (temp2.w - temp2.y) / (6.0 * C + kEpsilon)), // Hue
C / (1.0 - abs(2.0 * L - 1.0) + kEpsilon), // Saturation
abs(temp2.z + (temp2.w - temp2.y) / (6.0 * C + epsilon)), // Hue
C / (1.0 - abs(2.0 * L - 1.0) + epsilon), // Saturation
L); // Lightness
}