Arnaud Adell wrote:
>
> I would like to know if anyone know where I can find a
> documentation on the DGA (direct graphic access) to be
> able to use it to increase the speed of displaying
> sequences of images.
IMHO, DGA is not what you are looking for.
For many applications X is just fine, but you should
run the application and the X-Server with
o high priority (renice or SCHED_RR), or
o one of the many kernel-scheduler enhanced linux-versions
(RED-Linux, qlinux, linux/rt, SMART, KURT-Linux,
MVistas RTS - are there more?)
If your application has a hugh number of graphical operations
then better learn OpenGL and get a Voodoo3 or nvidia-based card
(TNT2,Geforc256,2GTS). Here, the libraries are directly
linked into the application (but within protected memory space).
So that the application directly accesses the accelerated functions
of the hardware. OpenGL is designed for 3D, but can be used it
for 2D as well.
If you want to display something in hard real time
(i dont see a case where this realy should be necessary)
then you will have to use RTL or RATI and the framebuffer
device, but this, at least, is slower because not
accelerated.
Bernhard
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