Il s'agit bien d'une discussion entre Cairo -> xrender -> xgl et Cairo -> glitz:
>If direct rendering turns out to be significantly faster than
>xrender->xgl rendering, (which I highly dough for this category of
>applications) then switching to glitz instead of xrender when DRI is available,
>might be interesting
>But so far my intentions with cairo's glitz backend have been
>that it would provide cairo output for applications that favor performance over
>quality
>Most applications still fall in the category of applications that favor quality
>over performance, and right now, I'd rather see them using xrender. Xgl will be
>able to provide maximum performance without loss of quality for these
>applications.
Donc, cela semble bien confirmer ce que je disais dans mon journal, tout le monde bénéficie de l'acceleration Xgl pourvu que l'application utilise Xlib (soit 100% des applis).
Par contre, la question à l'époque était de savoir si Xgl a d'aussi bonnes performance que Xorg.
>> Dave, how much faster would you say XGL is than the current X server?
>> Have any simple benchmarks from the parts of the system that work?
>> Even without benchmarks, how much faster does it feel, is the
>> difference obvious to a normal user?
> That's very hard to say. I don't know how well OpenGL's line drawing and
> bit blitting compares to a well accelerated XOrg driver, but I dought it's
> faster.However, if it's slower, I don't think it's so much slower that there's a
> problem.
[^] # Re: Petites notes joyeuses mi serieuses mi delirantes
Posté par gnumdk (site web personnel) . En réponse à la dépêche NLD 10 le poste du travail de demain par Novell (avec XGL et Compiz). Évalué à 2.
http://lists.freedesktop.org/archives/cairo/2004-November/00(...)
Il s'agit bien d'une discussion entre Cairo -> xrender -> xgl et Cairo -> glitz:
>If direct rendering turns out to be significantly faster than
>xrender->xgl rendering, (which I highly dough for this category of
>applications) then switching to glitz instead of xrender when DRI is available,
>might be interesting
>But so far my intentions with cairo's glitz backend have been
>that it would provide cairo output for applications that favor performance over
>quality
>Most applications still fall in the category of applications that favor quality
>over performance, and right now, I'd rather see them using xrender. Xgl will be
>able to provide maximum performance without loss of quality for these
>applications.
Donc, cela semble bien confirmer ce que je disais dans mon journal, tout le monde bénéficie de l'acceleration Xgl pourvu que l'application utilise Xlib (soit 100% des applis).
Par contre, la question à l'époque était de savoir si Xgl a d'aussi bonnes performance que Xorg.
>> Dave, how much faster would you say XGL is than the current X server?
>> Have any simple benchmarks from the parts of the system that work?
>> Even without benchmarks, how much faster does it feel, is the
>> difference obvious to a normal user?
> That's very hard to say. I don't know how well OpenGL's line drawing and
> bit blitting compares to a well accelerated XOrg driver, but I dought it's
> faster.However, if it's slower, I don't think it's so much slower that there's a
> problem.