Image depth, visuals and colormaps

[Alexandre CONFIANT-LATOUR]

Hi,

I'm currently working on a small video driver module, based on "Dummy 
driver" and i am trying to provide a run-time color depth change. My 
work is server-side only and i don't use Xlib.

The original "Dummy" driver is a software driver that draw things in 
memory. There is no hardware limitations but also no outputs. So i 
export frames using :

------------------------------- Begin Code------------------------------

screenPixmap = pScreen->GetScreenPixmap(pScreen);
pScreen->GetImage( &screenPixmap->drawable, 0, 0,
                    pScreen->width, pScreen->height,
                    ZPixmap, 0xFFFFFFFF, myOutBuffer );
then write buffer to file, socket, ...

-------------------------------- End Code-------------------------------

What are the "good practices" for getting "on the fly" color depth 
switching to work ?

Can i implements this through Visuals or Colormaps ?

Thanks in advance.

-- 
Alexandre Confiant-Latour
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