+ /**
+ * Validate buffers for usage in this batchbuffer.
+ * Does space-checking and asorted other book-keeping.
+ *
+ * @batch
+ * @buffers array to buffers to validate
+ * @num_of_buffers size of the passed array
+ */
+ boolean (*validate_buffers)(struct i915_winsys_batchbuffer *batch,
+ struct i915_winsys_buffer **buffers,
+ int num_of_buffers);
+