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xlib/shm: Avoid using a synchronous ShmCreatePixmap if evading the readback

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-08-17 23:38:10 +01:00
parent 3da2d8a1e2
commit 1bc9f673b6
1 changed files with 4 additions and 1 deletions
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5
src/cairo-xlib-surface-shm.c
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@ -804,6 +804,7 @@ _cairo_xlib_surface_get_shm (cairo_xlib_surface_t *surface,
if (surface->shm == NULL) {
pixman_format_code_t pixman_format;
cairo_bool_t will_sync;
if (! has_shm_pixmaps (surface))
return NULL;
@ -815,10 +816,12 @@ _cairo_xlib_surface_get_shm (cairo_xlib_surface_t *surface,
if (pixman_format == 0)
return NULL;
will_sync = !surface->base.is_clear && !overwrite;
surface->shm =
&_cairo_xlib_shm_surface_create (surface, pixman_format,
surface->width, surface->height,
TRUE, 1)->image.base;
will_sync, 1)->image.base;
if (surface->shm == NULL)
return NULL;