Comment 14 for bug 788607

On 09/19/2011 05:04 PM, Michał Sawicz wrote:
> OK, got it on a netbook and 2048+ wide extended desktop. The terminal
> window is drawn without opacity (it's rectangular, the not-rounded-
> anymore corners are ~black).
>
> What's more, on unity-3d, when I get a screen that wide, the desktop
> basically breaks and plays dead.
>
> This is on a Atom netbook, Intel N10, so it seems consistent that this
> issue comes with lower end intel chips.
>
> @Colin can you confirm that U3D still works as expected? @Sabin, you
> too, please?
>
> To me it looks more and more as a hardware / driver issue.

Unity 3D (Compiz, actually) is unusable on dual monitors if the desktop
exceeds the maximum texture size (which, for Intel cards and a few
others, is 2048x2048); Unity 2D is ok if I don't use compositing (apart
from some artefacts that are drawn on the primary monitor when the
secondary/external one displays a menu), gnome terminal is drawn on top
of everything otherwise.

While it may be a hardware limitation (Intel seems to have made a habit
out of this, Atom chips can't use more than 2G of RAM, for instance), is
it really that hard to paint separate monitors in separate textures?
(disclaimer: I don't know what I'm talking about, I know nil about the
way compositing is done).