At the moment, the renders output flat image files. The background (whether a solid color or a picture) is blended with the render.
This is a problem for those who need renders on a transparent background. For instance, if you want to drop a render on a web page that already has a texture, or integrate a render in a brochure that already has a background picture, you need a transparent background.
Two possible solutions:
- a "Transparent Background" checkbox when saving to GIF or PNG
- layers when saving to PDF (so we can remove the BG layer).