Quote:

and would possibly allow the entire process to be done without GlowCamerap


Yes that's exactly my point. The original scene is already rendered, so it should not be necessary to re-render it just to blend it with the post-processed texture.

Not having to render the scene twice sounds like it would improve performance quite significantly. I have no experience in writting plugins (or C++ at all, although I have read some tutorials here and there). Would this be a suitable first project or would it be too complicated? Not that I have time for it soon anyway..

shader tutorial