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xcb: Don't try to fallback more than once

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This fixes the following assert for pretty much every single xcb-fallback test:

cairo-xcb-surface.c:320: _get_image: Assertion `surface->fallback == ((void *)0)' failed.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2011-09-22 20:46:24 +02:00
parent d43f6d7459
commit 87fdc4356f
1 changed files with 8 additions and 4 deletions
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12
src/cairo-xcb-surface.c
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@ -781,6 +781,14 @@ _cairo_xcb_surface_fallback (cairo_xcb_surface_t *surface,
cairo_image_surface_t *image;
cairo_status_t status;
status = _cairo_composite_rectangles_add_to_damage (composite,
&surface->fallback_damage);
if (unlikely (status))
return _cairo_surface_create_in_error (status);
if (surface->fallback)
return surface->fallback;
image = (cairo_image_surface_t *)
_get_image (surface, TRUE, 0, 0, surface->width, surface->height);
@ -791,10 +799,6 @@ _cairo_xcb_surface_fallback (cairo_xcb_surface_t *surface,
surface->fallback = image;
}
status = _cairo_composite_rectangles_add_to_damage (composite,
&surface->fallback_damage);
if (unlikely (status))
return _cairo_surface_create_in_error (status);
return &surface->fallback->base;
}