Re: Problems with gtk-glarea

[Francis Montagnac <Francis Montagnac sophia inria fr>]

> >> We have experienced problems with gtkglarea-1.2.1 and
> >> gtk-1.2.10.
> >> When the X display resolution is high (eg 1600x1200) the glarea does
> >> not show any OpenGL primitives (black window). On lower resolutions,
> >> however,
> >> (eg 1280x1024) everything works fine (on the same machine).
 
> > This is almost certainly a limitation of your OpenGL card/driver and
> > not a gtk bug. Most likely your card does not have enough RAM on board
> > to support OpenGL rendering at high desktop resolutions. Anyway, take
> > this up with the appropriate OpenGL developers (the DRI developers if
> > you're using a DRI driver, 

Nos machines avec carte matrox (ex: samoa tahiti) n'utilisent pas
encore le DRI.

> and NVIDIA if you're using theirs). 
 
Oui, mais je viens de me rendre compte qu'une nouvelle version de ceux
ci est sortie le 5 Sept (helas, ils ont encore changé leur site et le
lien m'amenant a leur rep FTP est périmé: j'etais surpris de ne pas
avoir vu de nouvelles versions de ca cet ete).

Je la met en place cet aprem et vous previens. (pour mururoa et
tasmanie donc).

> Thank's for your answer... I suspected something like that.
> However, what is puzzling me is that some other OpenGL applications
> (much more complex) programmed using qt are working fine on the same
> computer with a high resolution screen. That tends to make me
> believe that there is also something related to gtk, is gtk much
> more memory demanding than qt in this regard ??? The application
> here is pretty simple, one menu, few items and just a sphere.... The
> qt application that works displays an image plus complex contours
> over it, which AFAICT seems to require more memory.

Semble suspect effectivement.

Quoi qu'il en soit, je pense qu'il faudra fournir un moyen simple de
permettre aux utilisateurs de lancer une seconde (voire 3 ou 4 :-)
session X11 avec resolutions differentes.

    Francis