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fb: cleanup fbChangeWindowAttributes 

This cleans up the duplication in fbChangeWindowAttributes,
and fixes a bug if the fb24_32ReformatTile ever failed,
since the old code would happily dereference it in the fbEvenTile
call a few lines later.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
This commit is contained in:
Dave Airlie 2011-03-31 15:33:46 +10:00
parent 36c7158133
commit f9834d312e
1 changed files with 20 additions and 35 deletions
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55
fb/fbwindow.c
View File

@ -146,51 +146,36 @@ fbCopyWindow(WindowPtr pWin,
fbValidateDrawable (&pWin->drawable);
}
static void
fbFixupWindowPixmap(DrawablePtr pDrawable, PixmapPtr *ppPixmap)
{
PixmapPtr pPixmap = *ppPixmap;
if (pPixmap->drawable.bitsPerPixel != pDrawable->bitsPerPixel)
{
pPixmap = fb24_32ReformatTile (pPixmap, pDrawable->bitsPerPixel);
if (!pPixmap)
return;
(*pDrawable->pScreen->DestroyPixmap) (*ppPixmap);
*ppPixmap = pPixmap;
}
if (FbEvenTile (pPixmap->drawable.width *
pPixmap->drawable.bitsPerPixel))
fbPadPixmap (pPixmap);
}
Bool
fbChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
{
PixmapPtr pPixmap;
if (mask & CWBackPixmap)
{
if (pWin->backgroundState == BackgroundPixmap)
{
pPixmap = pWin->background.pixmap;
if (pPixmap->drawable.bitsPerPixel != pWin->drawable.bitsPerPixel)
{
pPixmap = fb24_32ReformatTile (pPixmap,
pWin->drawable.bitsPerPixel);
if (pPixmap)
{
(*pWin->drawable.pScreen->DestroyPixmap) (pWin->background.pixmap);
pWin->background.pixmap = pPixmap;
}
}
if (FbEvenTile (pPixmap->drawable.width *
pPixmap->drawable.bitsPerPixel))
fbPadPixmap (pPixmap);
}
fbFixupWindowPixmap(&pWin->drawable, &pWin->background.pixmap);
}
if (mask & CWBorderPixmap)
{
if (pWin->borderIsPixel == FALSE)
{
pPixmap = pWin->border.pixmap;
if (pPixmap->drawable.bitsPerPixel !=
pWin->drawable.bitsPerPixel)
{
pPixmap = fb24_32ReformatTile (pPixmap,
pWin->drawable.bitsPerPixel);
if (pPixmap)
{
(*pWin->drawable.pScreen->DestroyPixmap) (pWin->border.pixmap);
pWin->border.pixmap = pPixmap;
}
}
if (FbEvenTile (pPixmap->drawable.width *
pPixmap->drawable.bitsPerPixel))
fbPadPixmap (pPixmap);
}
fbFixupWindowPixmap(&pWin->drawable, &pWin->border.pixmap);
}
return TRUE;
}