Fixed the "paste object" action. It was a typo. Now it also uses an object's bounding box to cull instead of it's collision polygon.
Did the preliminaries for pasting objects with effects and transparency. Not working quite right for some reason, but it'll have to do for now. A side effect is paster object's now need twice as much vram.
The internal process is:
1. draw to a blank off-screen texture with an effect.
2. draw that texture to the paster's texture with opacity.