Is there some way to do this in Resolume already? Basically I want an effect that I can activate that will tell the graphics card not to clear the screen. Watch this video: www.youtube.com/watch?v=KGOzT6zxKOM You'll notice at 16:35 notice that the logos leave a trail. I want to do something like that, It's kind of similar to the internal feedback in Resolume but it's not.
did you tried the Trails effect? :p
i think you should be happy with it... also can freeze the screen completely (without trail) if you set the trail from 0 to 100 (with midi/keyboard/osc mapping for example)