DGA vs openGL

SDL Development
1

Hi !

A little newbie question: Under X11 using DGA mode, is there any hardware
acceleration
or the DGA mode only gives a direct access to the framebuffer ? I want to
use SDL to
develop a little test which has to run in a VIA savage chipset platform and
i don’t want to
bypass the hardware acceleration capabilities. Which mode is better: DGA,
DRI or
openGL ?

Are there some good links to information related to this kind of stuff ?

Any comment is welcome!
Thanks,
Jorge________________________________________________________________________________
Este mensaje se dirige exclusivamente a su destinatario y puede contener
informaci?n CONFIDENCIAL sometida a secreto profesional o cuya divulgaci?n
est? prohibida en virtud de la legislaci?n vigente. Si ha recibido este
mensaje por error, le rogamos que nos lo comunique inmediatamente por esta
misma v?a o por tel?fono (34 93 739 67 00) y proceda a su destrucci?n.
N?tese que el correo electr?nico v?a Internet no permite asegurar ni la
confidencialidad de los mensajes que se transmiten ni la correcta recepci?n
de los mismos. En el caso de que el destinatario de este mensaje no
consintiera la utilizaci?n del correo electr?nico v?a Internet, rogamos lo
ponga en nuestro conocimiento de manera inmediata. This message is
intended exclusively for its addressee and may contain information that is
CONFIDENTIAL and protected by a professional privilege or which disclosure
is prohibited by law. If this message has been received in error, please
immediately notify us via e-mail or by telephone (34 93 739 67 00) and
delete it. Please note that Internet e-mail does not guarantee the
confidentiality or the proper receipt of the messages sent. If the
addressee of this message does not consent to the use of Internet e-mail,
please communicate it to us immediately.

2

Hi !

Hi.

A little newbie question: Under X11 using DGA mode,
is there any hardware
acceleration
or the DGA mode only gives a direct access to the
framebuffer ? I want to

slightly rusty on this, but I think you’ve got it…
as long as you’ve got the program running as root.
Otherwise, it dosn’t do jack.

use SDL to
develop a little test which has to run in a VIA
savage chipset platform and
i don’t want to
bypass the hardware acceleration capabilities.

Of course you don’t :).

Which
mode is better: DGA,
DRI or
openGL ?

Well of course it all depends on the situation.
DGA requires running as root, and being a bit more
direct, also lets you fuck over your computer faster.
DRI does some stuff, including provide the interface
(with correct drivers from the card vendor of course)
for OpenGL H/W acceleration.

Are there some good links to information related to
this kind of stuff ?

uhm…
http://opengl.org/

Any comment is welcome!
Thanks,
Jorge

no prob. Sorry I couldn’t be more help :).__________________________________
Do you Yahoo!?
The New Yahoo! Shopping - with improved product search