Luminance()

void Luminance(float deltaLuminance)

Will increase/decrease the luminance of all pixels (exposure). deltaLuminance can be any value between -1.0 (make entire image black) and +1.0 (make entire image white). A value of 0.0 will result in no change at all.

In essence it does this:

newPixelColor = pixelColor + new Color(deltaLuminance, deltaLuminance, deltaLuminance);

Example:


if(GUI.Button(new Rect(0,0,200,25), "I'd rather go blind")) {
    myTexture.Luminance(0.7f);  // make image overexposed
}