Re: [Mesa3d-dev] gallium cached bufmgr busy change

[Dave A. <ai...@gm...>]

On Sun, Mar 7, 2010 at 9:44 PM, Luca Barbieri <luc...@gm...> wrote:
> I think you are supposed to do this using the fenced bufmgr over
> cached along with a (ideally userspace) fencing mechanism.
> If you can implement pb_busy, you should be able to implement
> fence_signalled in exactly the same way (making the fence handle a
> pointer to buffers should work for this purpose, if standalone fences
> are hard to do).
> The fenced bufmgr will only pass destruction requests to the wrapped
> bufmgr once the fences are signalled.
>

It just seemed a bit heavyweight, I don't want userspace fences, so why
do I have to jump though abstraction hoops?

The fencing solution isn't near as efficent from what I can see, as it
is designed around fences not buffer busy, I'll see if I can give it a try,
but I suspect it look and smell like a hack.

Dave.