fdo-mirrors/xserver
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/xorg/xserver.git synced 2026-04-20 07:10:41 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

EXA: Fix a couple of logic errors in exaGetPixmapFirstPixel.

Browse source 
The fb pointer would be left uninitialized when exaPixmapIsOffscreen
returned false. When it returned true and the pixmap was damaged,
fb would be initialized from the pixmap's devPrivate.ptr before the
exaDoMigration and exaPrepareAccess calls, at which point
devPrivate.ptr would still be pointing at offscreen memory.
This commit is contained in:
Fredrik Höglund 2007-08-18 19:02:18 +02:00
parent 23fbd5292d
commit 3c448b0eb6
1 changed files with 12 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
exa/exa_unaccel.c
View file

@ -382,19 +382,19 @@ exaGetPixmapFirstPixel (PixmapPtr pPixmap)
ExaMigrationRec pixmaps[1];
ExaPixmapPriv (pPixmap);
fb = pExaPixmap->sys_ptr;
/* Try to avoid framebuffer readbacks */
if (exaPixmapIsOffscreen(pPixmap)) {
if (!miPointInRegion(DamageRegion(pExaPixmap->pDamage), 0, 0, &box)) {
fb = pExaPixmap->sys_ptr;
} else {
need_finish = TRUE;
fb = pPixmap->devPrivate.ptr;
pixmaps[0].as_dst = FALSE;
pixmaps[0].as_src = TRUE;
pixmaps[0].pPix = pPixmap;
exaDoMigration (pixmaps, 1, FALSE);
exaPrepareAccess(&pPixmap->drawable, EXA_PREPARE_SRC);
}
if (exaPixmapIsOffscreen(pPixmap) &&
miPointInRegion(DamageRegion(pExaPixmap->pDamage), 0, 0, &box))
{
need_finish = TRUE;
pixmaps[0].as_dst = FALSE;
pixmaps[0].as_src = TRUE;
pixmaps[0].pPix = pPixmap;
exaDoMigration (pixmaps, 1, FALSE);
exaPrepareAccess(&pPixmap->drawable, EXA_PREPARE_SRC);
fb = pPixmap->devPrivate.ptr;
}
switch (pPixmap->drawable.bitsPerPixel) {