[PATCH] remove damagePostOp() from DamageDamageRegion()

Maarten Maathuis madman2003 at gmail.com
Fri Aug 29 15:47:27 PDT 2008

On Fri, Aug 29, 2008 at 11:58 AM, Michel Dänzer
<michel at tungstengraphics.com> wrote:
> On Wed, 2008-08-27 at 15:10 -0700, Aaron Plattner wrote:
>> For implementing 5:
>>     It seems like it would be possible to add a new request that's similar
>> to DamageSubtract but that also inserts a sync marker into X's channel and
>> returns the counter value to the client.  The client would then use some
>> new extension to insert a waitSync on that counter value into its own
>> channel before continuing.  This would ensure that the client's rendering
>> happens after X's, while allowing both X and the client to continue to
>> enqueue more commands.
> It occurred to me that this description sounds similar to a possible
> implementation of glXWaitX(). Maybe that could be used at least as an
> initial solution for the problem until a potential better solution is
> worked out.
> Aaron, you opined on IRC that glXWaitX isn't sufficient, but from my
> reading of the GLX spec, I don't understand why not. In particular, the
> spec says:
>        X rendering calls made prior to glXWaitX are guaranteed to be
>        executed before OpenGL rendering calls made after glXWaitX.
> How do others interpret this?
> --
> Earthling Michel Dänzer           |          http://tungstengraphics.com
> Libre software enthusiast         |          Debian, X and DRI developer
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I've seperated some stuff into seperate commits. The last one being a
first attempt at the damage markers. Feedback appreciated.


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