Original Post
I have been working on a down-sampling pass for a bloom effect lately but I have a consistent problem. When I down-sample the image it comes out all pixelated and jagged which causes the bloom to flicker badly. It is as if I were not combining near pixels from the original render and rather just picking every fourth pixel. I think the way to solve the problem is a better method for rendering to a texture smaller than the screen. As of yet I have not been able to render the down sampled scene to a texture that is one fourth of the view size. Instead I have down-sampled the image and then repeated it across the normal size of the viewport in order for it to be smaller. I think this might be the problem because the texture filter is pixelating it. I don't know any way around this. Can I render to a smaller texture or is there another way to repeat the scene on a large texture that won't pixelate it? Thanks!
