[Openchrome-devel] Is EXA composite working?

James Simmons jsimmons at infradead.org
Wed Jun 5 17:14:05 PDT 2013

> Hi,
> Just gave the latest git driver a quick spin on OLPC XO-1.5 (VX855)
> now that EXA has been enabled again.

Thanks for trying it. One other problem from our own testing on the XO
is Xv seems to be broken.
> However, composite doesn't seem to be working. viaExaCheckComposite_H6
> is called a lot, and returns TRUE in most cases, but the
> PrepareComposite and Composite functions are never called (tested by
> inserting ErrorF statements, nothing gets printed).

Yipes!! I just assumed it worked since some time ago some patches went 
in that fixed compositing.

> Looking a little deeper, I see that exaTryDriverComposite calls
> exaGetOffscreenPixmap() on the pixmap it is working with, which calls
> down into exaPixmapHasGpuCopy_classic(), which returns:
>         ret = (pExaPixmap->use_gpu_copy && pExaPixmap->fb_ptr);
> In this case, use_gpu_copy and fb_ptr always seem to be FALSE and NULL.
> Is this working for anyone else, could someone else repeat the quick
> ErrorF test?

Will look into it this week end.

	In order for XO to use our org driver what is most needed.

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