txesmi@ man, I still hope that you will find some spare time to help me out with this
I am sorry, I wanted to do some tests before answering but forgot it in the way. Better late than never
The main idea was to set the largest render target from the beginning and modify the views size only, instead of rebuilding everything each resolution change. As spected, there is no need of deleting anything. The rendering chain, main cameras render target inclusive, survives to a resolution change, and also to a blank level load as long as I tested it. Very few changes were needed to acoplish the goal. I added two functions that build and remove the whole rendering chain too. I guess that the negative side-effect comes from the fact that the whole render targets are cleared before rendering, a bunch of not visible pixels are also cleared on windowed video modes. Nothing to worry about, I think. Maxime when you leave render targets in peace forever.
pixelation01.zip Salud!