+ /* for frontbuffer backing store */
+ Bool (*destroy_front_buffer)(ScrnInfoPtr pScrn);
+ Bool (*create_front_buffer)(ScrnInfoPtr pScrn);
+ Bool (*bind_front_buffer)(ScrnInfoPtr pScrn);
+
+ /* kms */
+ struct kms_driver *kms;
+ struct kms_bo *root_bo;
+