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composite: Don't double-redirect if someone asks for backing store twice 

v2: Belt-and-suspenders the unredirection path [vsyrjala]

Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Adam Jackson 2013-11-05 10:12:28 -05:00
parent a2b2c271e0
commit 7b5d4f147f
1 changed files with 2 additions and 2 deletions
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4
composite/compinit.c
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@ -117,11 +117,11 @@ compChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
if (ret && (mask & CWBackingStore) && if (ret && (mask & CWBackingStore) &&
pScreen->backingStoreSupport != NotUseful) { pScreen->backingStoreSupport != NotUseful) {
if (pWin->backingStore != NotUseful) { if (pWin->backingStore != NotUseful && !pWin->backStorage) {
compRedirectWindow(serverClient, pWin, CompositeRedirectAutomatic); compRedirectWindow(serverClient, pWin, CompositeRedirectAutomatic);
pWin->backStorage = (pointer) (intptr_t) 1; pWin->backStorage = (pointer) (intptr_t) 1;
} }
else { else if (pWin->backingStore == NotUseful && pWin->backStorage) {
compUnredirectWindow(serverClient, pWin, compUnredirectWindow(serverClient, pWin,
CompositeRedirectAutomatic); CompositeRedirectAutomatic);
pWin->backStorage = NULL; pWin->backStorage = NULL;