I suppose this ought to be posted under another topic in Blender General maybe, but what the heck… these are my attempts at a pure white background setup using Ambient Occlusion:
- A default lamp
- Suzanne with the default grey material
- A plane with material colour white
- A world with horizon colour white (zenith colour can be anything as long as you turn off “Blend” beside the preview which I did)
- “Ray” enabled in the render buttons area
Now the good stuff!
AO on. Plane’s material Amb set at default 0.5
AO on. Plane’s Amb set to 1.0
AO on. Plane’s Amb set to 0 (compare to AO off above)
AO on. Plane’s Amb set to 1.0. Plane using Ray Mirror set to 0.75
You can use any colour you want (white’s just the easiest to do) but you may have to play with the floor’s Amb slider or the energy of the lamps or the energy of the AO to ensure a smooth transition from floor to background. I find that a larger plane sometimes helps. For a single background colour, I find it best to match the floor and horizon as a start and tweak from there.
I haven’t tinkered yet with gradient world colours and I suspect it may be somewhat more difficult to achieve. I hope I’m wrong though. I’ve just realized that I did not try rendering Suzanne with a mirror material herself. I suspect that I would need to add stuff to the scene for her to reflect though, even if the objects themselves don’t appear in the render. Otherwise she may look pretty much white. Who knows?
Anyway, maybe my tests can inspire some ideas!