Backups/Bliss-Shader
1
0
Fork 0
mirror of https://github.com/X0nk/Bliss-Shader.git synced 2025-06-26 02:12:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

improved tone curve

Browse Source
This commit is contained in:
Sasha
2023-07-07 16:57:21 +01:00
parent 3eb5f2116e
commit 35f8b6373b
2 changed files with 16 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
shaders/final.fsh
View File

@ -74,34 +74,22 @@ void applyContrast(inout vec3 color, float contrast){
color = (color - 0.5) * contrast + 0.5;
}
float lowerCurve(float x) {
float y = 16 * x * (0.5 - x) * 0.1;
return clamp(y, 0.0, 1.0);
}
float upperCurve(float x) {
float y = 16 * (0.5 - x) * (x - 1.0) * 0.1;
return clamp(y, 0.0, 1.0);
}
void applyLuminanceCurve(inout vec3 color, float darks, float brights){
// wash out darks
// brights = 2.77;
// darks = 2;
// neat curve
// brights = 3.16;
// darks = 1.44;
// neat curve
// brights = 2.27;
// darks = 5.0;
// SCKRUNKLE
// brights = 3.0;
// darks = 5.0;
vec3 darkCurve = pow(1.0 - pow(1.0 - color, vec3(darks)), vec3(1.0/darks));
vec3 brightCurve = pow(1.0 - pow(color, vec3(brights)), vec3(1.0/brights));
darkCurve = pow(darkCurve,vec3( 3 ));
brightCurve = pow(brightCurve,vec3( 3 ));
color = (darkCurve - brightCurve) * 0.5 + 0.5; // it goes -1 to 1 by default
color = clamp(color,0.0,1.0);
// color.r = color.r < 0.5 ? pow(2.0 * color.r, darks) / 2.0 : 1.0 - (pow(2.0 - 2.0 * color.r, brights) / 2.0);
// color.g = color.g < 0.5 ? pow(2.0 * color.g, darks) / 2.0 : 1.0 - (pow(2.0 - 2.0 * color.g, brights) / 2.0);
// color.b = color.b < 0.5 ? pow(2.0 * color.b, darks) / 2.0 : 1.0 - (pow(2.0 - 2.0 * color.b, brights) / 2.0);
color.r += darks * lowerCurve(color.r) + brights * upperCurve(color.r);
color.g += darks * lowerCurve(color.g) + brights * upperCurve(color.g);
color.b += darks * lowerCurve(color.b) + brights * upperCurve(color.b);
}
void main() {