How to disable 3d background rendering?

[jwo]

I'm using ubuntu 7.10 and I realize my video card has the 2048 size limit. I was wondering if it was possible to shrink the virtual screen size somehow to 2047 like to offset the screen or to simply disable background rendering only in compiz?

All the other effects work and are very cool.

[Deciare]

I'm not sure I understand the question. Which background are you talking about? The skydome background (the picture behind the cube that becomes visible as you rotate it)? Or do you mean the desktop wallpaper? Something else?

... And, out of curiosity, how does this background currently look?

[jwo]

Basically I have a dual monitor setup and with twinview or xinerama I basically increase the screen res to 2048x768. My nvidia card's texture size limit is 2048, and it just so happens that at 2048x768 it is not able to render the texture.

The result is that my wallpaper/background/desktop icons are not rendered. (It's white.) I was wondering if it were possible to essentially work around the issue by shaving off a pixel off the width or possibly by somehow telling compiz to not bother rendering the wallpaper and let gnome or whatever that compiz is partially replacing cover only the wallpaper?

[Deciare]

If I'm not mistaken, GNOME is already rendering the desktop, but to the off-screen buffer provided by the Composite extension. It's not displayed until Compiz has had a chance to composite it back onto your visible screen area, which probably means that Compiz will see a 2048-pixel wide texture as long as your display resolution is that high. In other words, I don't have a solution that will work with your current display resolution and hardware combination. ^^;

[jwo]

Would it be possible to write a plugin or something that is always the farthest away that displays a picture? Sorta like a psuedo fake background?

What libs would I need to do this?