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win32: mark-dirty cannot assume the fallback has been discarded

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Flushing only releases the fallback if we flush twice with no
intervening damage (the theory is to try and reduce readbacks). So it is
possible for a correctly behaving application to call mark-dirty and there
still be a fallback.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-03-23 14:22:22 +00:00
parent 2121887030
commit 8416b40f43
1 changed files with 1 additions and 2 deletions
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3
src/win32/cairo-win32-display-surface.c
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@ -566,8 +566,7 @@ static cairo_status_t
_cairo_win32_display_surface_mark_dirty (void *abstract_surface,
int x, int y, int width, int height)
{
cairo_win32_display_surface_t *surface = abstract_surface;
assert (surface->fallback == NULL);
_cairo_win32_display_surface_discard_fallback (abstract_surface);
return CAIRO_STATUS_SUCCESS;
}