When I use CreateProceduralGabor or CreateProceduralSineGrating together with alpha blending enabled, I found I don't have a way to set backgroundColorOffset correctly. After I took a look at the shader, it seems that the alpha in backgroundColorOffset is also modulated sinusoidally. My understanding is that the alpha should be a constant. If it is a sine wave or gabor, the image will lose its mean luminance. Am I right?
-Xiangrui
-Xiangrui