I have an ortho cam capturing a garage door which is then placed on the scene. I’ve found that if I try to apply a posteffect from github (SSAO and FXAA have both done this) I get a pure black output:
In my experience doing something like this tends to introduce rounding errors and jittering when you do the trigonometry to fit the subject properly. Probably not a great solution
For what it’s worth, FXAA is the only one that I actually need and the main reason I posted this here. I just found it interesting that it had the same result as SSAO. Wasn’t very clear in the original post