void v3_graphics_console_release_frame_buffer_data_rw(v3_graphics_console_t cons);
// returns >0 if a redraw in response to this update would be useful now
int v3_graphics_console_inform_update(v3_graphics_console_t cons);
+// when render_request is invoked, Palacios will redraw immediately
+int v3_graphics_console_register_render_request(
+ v3_graphics_console_t cons,
+ int (*render_request)(v3_graphics_console_t cons,
+ void *priv_data),
+ void *priv_data);
+// when update_inquire is invoked, palacios will indicate if there
+// is anything new with a non-zero return value
+int v3_graphics_console_register_update_inquire(
+ v3_graphics_console_t cons,
+ int (*update_inquire)(v3_graphics_console_t cons,
+ void *priv_data),
+ void *priv_data);
void v3_graphics_console_close(v3_graphics_console_t cons);
// callback to indicate that the FB is stale and that an update can occur
// a positive return value indicates we should re-render now
+ // this callback is from Palacios to the implementation and is called
+ // when virtual GPU state changes to ask if the FB should be re-rendered now
int (*changed)(v3_graphics_console_t cons);
+
+
+ // callback to allow Palacios to register a render request callback
+ // with the implementation. Using this callback, the implementation
+ // can specifically request that Palacios render immediately
+ int (*register_render_request)(v3_graphics_console_t cons,
+ int (*render_request)(v3_graphics_console_t cons,
+ void *priv_data),
+ void *priv_data);
+
+ // callback to allow Palacios to register an update inquire callback
+ // with the implementation. Using this callback, the implementation
+ // can ask if Palacios has any new data
+ int (*register_update_inquire)(v3_graphics_console_t cons,
+ int (*update_inquire)(v3_graphics_console_t cons,
+ void *priv_data),
+ void *priv_data);
+
};
