CheapContrast、CheapContrast_RGB
简易实现的对比度调节
原理：
// 简易实现的对比度调节
// float In 输入
// float Constrast 对比度
Out = Lerp(-Constrast, Constrast + 1.0, In)
Out = Clamp(Out, 0.0, 1.0);版权声明
作者: Chaim
链接: https://chaim.eu.org/posts/%E8%89%B2%E5%BD%A9-color/
许可证: CC BY-NC-SA 4.0
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Please attribute the source, use non-commercially, and maintain the same license.