[Xorg] Getting GATOS branch created on Xorg

Ian Romanick idr at us.ibm.com
Fri Aug 20 13:48:06 PDT 2004

Jon Smirl wrote:

> Ian, what's the best way to get DRM to allocate a piece of video memory
> for V4L to use, or do we need to wait for your new memory manager?
> This can certainly be done by merging the radeon V4L driver code into
> the DRM driver. Is there a way to do this from user space with changing
> DRM?

Either that or carve off a chunk at driver init time (like is done for 
the back & depth buffers). :(  Basically, the video capture process 
isn't different from other accelerated rendering: you do it to on-screen 
memory or to the moral equivalent of a pbuffer.

> --- Vladimir Dergachev <volodya at mindspring.com> wrote:
>>On Fri, 20 Aug 2004, Jon Smirl wrote:
>>>Why can't you use the DRM API to allocate a piece of texture
>>I can. But I will receive texture memory in *system* RAM.
>>Video capture requires a piece of *video* RAM, the one that resides 
>>directly on the card.

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