On Don, 2003-02-27 at 09:33, Sven Luther wrote:
> On Thu, Feb 27, 2003 at 02:14:37AM +0100, Michel Dänzer wrote:
> > On Mit, 2003-02-26 at 18:16, Alex Deucher wrote:
> > > -- Sven Luther <[EMAIL PROTECTED]> wrote:
> >
> > [ video memory management ]
> >
> > > > How is it done right now ? Is a part of the onchip memory reserved
> > > > for framebuffer and XAA, and another part free for 3D use ?
> > >
> > > Not sure. I'm not familiar with the memory manager either. I seem to
> > > recall some drivers have the (compile time) option of allocating more
> > > or less to 2D vs 3D. I believe it was the mga driver, and the issue
> > > was not having enough memory for Xv cause 3D has reserved too much.
> >
> > Some drivers (tdfx and radeon at least) only reserve offscreen memory
> > for 3D when it's actually used, the amount is still static though.
>
> Do they get it from the OS memory manager, or do they do another trick ?
See RADEONDRITransitionTo{2,3}d() .
--
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member / CS student, Free Software enthusiast
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