In case you want to copy a region with source = dest, you have the same pixmap
as source and dest.
At the end of exaPixmapIsOffscreen_classic() the devPrivate.ptr is reset to
NULL (look at the sources).
Now this is what happens in ExaCheckCopyNtoN:
exaPrepareAccess( pDst );
Calls IsOffscreen()
sets devPrivate.ptr to NULL
sets up devPrivate.ptr to real pointer
Everything OK
exaPrepareAccess( pSrc );
Calls IsOffscreen()
sets devPrivate.ptr to NULL
BAILS OUT CAUSE OF NESTED OPERATION SINCE DST EQUALS SRC
We end up with devPrivate.ptr as NULL, and that is clearly wrong.
In particular this fixes a segfault when using the psb driver (bug 28077)
Signed-off-by: Éric Piel <eric.piel@tremplin-utc.net>
Reviewed-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
(cherry picked from commit 7e8f100121)
- Fixup some variable names as well.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Acked-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
- Pixmaps that are created during a fallback are automatically prepared access.
- During the fallback accelerated ops are blocked to prevent new/scratch gc's
from triggering accelerated ops on mapped pixmaps.
- A few cases of incorrect wrapping (on the top level pointer instead of
between damage and (w)fb) have been removed.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Acked-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
- Create a few seperate functions and a few private function pointers.
- Replace a few if conditions with a check for pExaPix->pDamage instead.
- This is in preperation of a third scheme that lies somewhere in between.
- Code clarity would have suffered (i started working on it and didn't like the mess).
