dnd: work around cairo-gl brokenness
If cairo-gl is used, display_create_surface() will create an
wl_egl_window for each surface and this will result in errors if this
surface is used as a source. Also, one can't get a wl_buffer for such
a surface wich led to crashes when trying to do so for the drag icon.
This patch works around both problems by forcing the item and drag icon
surfaces to use shm.
diff --git a/clients/window.c b/clients/window.c
index 4c94d16..bab5d76 100644
--- a/clients/window.c
+++ b/clients/window.c
@@ -618,7 +618,7 @@
if (check_size(rectangle) < 0)
return NULL;
#ifdef HAVE_CAIRO_EGL
- if (display->dpy)
+ if (display->dpy && !(flags & SURFACE_SHM))
return display_create_egl_window_surface(display,
surface,
flags,