hue \ saturation \ brightness的着色器文件

Question

我是新編寫着色器文件（.fx），我如何編寫着色器文件來設置hue \ brigtness \ contrast。

Answer 1

看看

• http://www.nathanm.com/photoshop-blending-math/
• http://mouaif.wordpress.com/2009/01/05/photoshop-math-with-glsl-shaders/

Answer 2

也看到

• http://svetoslavsavov.blogspot.com/2009/07/using-gpu-accelerated-shader-effects-in.html