xserver: Branch 'master'
GitLab Mirror
gitlab-mirror at kemper.freedesktop.org
Fri Mar 15 17:10:35 UTC 2019
present/present_scmd.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
New commits:
commit ef91da2757050652c724f6e674e8b1acf5d0cb31
Author: Michel Dänzer <michel.daenzer at amd.com>
Date: Wed Feb 27 18:29:50 2019 +0100
present/scmd: Check that the flip and screen pixmap pitches match
If they don't, flipping will result in corrupted display.
Test case:
* Run Xorg at 1920x1080 with no window manager
* glxgears -geometry 2048x1080
diff --git a/present/present_scmd.c b/present/present_scmd.c
index 6a580cb7a..3b7fbd832 100644
--- a/present/present_scmd.c
+++ b/present/present_scmd.c
@@ -78,7 +78,7 @@ present_check_flip(RRCrtcPtr crtc,
PresentFlipReason *reason)
{
ScreenPtr screen = window->drawable.pScreen;
- PixmapPtr window_pixmap;
+ PixmapPtr screen_pixmap, window_pixmap;
WindowPtr root = screen->root;
present_screen_priv_ptr screen_priv = present_screen_priv(screen);
@@ -99,8 +99,9 @@ present_check_flip(RRCrtcPtr crtc,
return FALSE;
/* Make sure the window hasn't been redirected with Composite */
+ screen_pixmap = screen->GetScreenPixmap(screen);
window_pixmap = screen->GetWindowPixmap(window);
- if (window_pixmap != screen->GetScreenPixmap(screen) &&
+ if (window_pixmap != screen_pixmap &&
window_pixmap != screen_priv->flip_pixmap &&
window_pixmap != present_flip_pending_pixmap(screen))
return FALSE;
@@ -126,7 +127,8 @@ present_check_flip(RRCrtcPtr crtc,
window->drawable.x != pixmap->screen_x || window->drawable.y != pixmap->screen_y ||
#endif
window->drawable.width != pixmap->drawable.width ||
- window->drawable.height != pixmap->drawable.height) {
+ window->drawable.height != pixmap->drawable.height ||
+ pixmap->devKind != screen_pixmap->devKind) {
return FALSE;
}
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