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win32u: Reset draw_start_ticks for new window_surface.

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Normally, a new window_surface has no damage so its draw_start_ticks
value is reset at the time of the first lock_surface.

However, if contents from the old window_surface are copied to the new
one when the window_surface for a window is updated, the new
window_surface will be initially damaged. We want to reset the
draw_start_ticks value in this case too, to avoid flushes occuring soon
after such updates, during the initial redraw of the window_surface.

Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
This commit is contained in:
Alexandros Frantzis 2023-02-16 18:20:56 +02:00 committed by Alexandre Julliard
parent aa72d7d42d
commit 6d2bd75c4a
1 changed files with 2 additions and 1 deletions
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3
dlls/win32u/dibdrv/dc.c
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@ -744,7 +744,8 @@ static inline void lock_surface( struct windrv_physdev *dev )
{
/* gdi_lock should not be locked */
dev->surface->funcs->lock( dev->surface );
if (IsRectEmpty( dev->dibdrv->bounds )) dev->surface->draw_start_ticks = NtGetTickCount();
if (IsRectEmpty( dev->dibdrv->bounds ) || dev->surface->draw_start_ticks == 0)
dev->surface->draw_start_ticks = NtGetTickCount();
}
static inline void unlock_surface( struct windrv_physdev *dev )