Re: [Mesa3d-dev] [RFC] Event-based buffer validation for DRI2.

[Chia-I Wu <ol...@gm...>]

On Sat, Jan 16, 2010 at 10:58:28PM +0100, Francisco Jerez wrote:
> The current buffer validation approach (AKA the DRI2 glViewport hack)
> is both incorrect (because a compliant OpenGL application may opt for
> the identity as viewport transform and work with window coordinates
> directly) and inefficient (some programs have the habit of calling
> glViewport several times per frame (e.g. OpenArena), causing many
> unnecessary roundtrips).
> This changeset gives DRI2 the ability to report drawable changes in an
> asynchronous way, but it's a bit intrusive so I expect all sorts of
> complaints to come.
Great work!  I am not familiar with X protocol enough to have concrete
comments on the code, but I wish it finds its way in soon.

-- 
Regards,
olv