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weston_buffer: Prepare for buffer to outlive resource
We currently allow a weston_buffer to outlive the underlying wl_buffer iff the renderer/backend has cached it. Currently the 'is this buffer valid?' test relies on looking for the validity of the weston_buffer itself; shift these tests to looking at the validity of the underlying resource. Signed-off-by: Daniel Stone <daniels@collabora.com>
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@ -1983,7 +1983,11 @@ weston_view_is_opaque(struct weston_view *ev, pixman_region32_t *region)
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WL_EXPORT bool
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weston_view_has_valid_buffer(struct weston_view *ev)
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{
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return ev->surface->buffer_ref.buffer != NULL;
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if (!ev->surface->buffer_ref.buffer)
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return false;
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if (!ev->surface->buffer_ref.buffer->resource)
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return false;
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return true;
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}
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/** Check if the view matches the entire output
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@ -420,6 +420,7 @@ drag_surface_configure(struct weston_drag *drag,
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assert((pointer != NULL && touch == NULL) ||
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(pointer == NULL && touch != NULL));
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/* XXX: Why are we checking for a valid buffer here too ... ? */
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if (!weston_surface_is_mapped(es) && es->buffer_ref.buffer) {
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if (pointer && pointer->sprite &&
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weston_view_is_mapped(pointer->sprite))
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