// Called by write_buffer and clear_frame to initialize OpenGL flags
void init_frame(Playback3DCommand *command);
void write_buffer_sync(Playback3DCommand *command);
- void draw_output(Playback3DCommand *command);
+ void draw_output(Playback3DCommand *command, int flip_y);
void clear_output_sync(Playback3DCommand *command);
void clear_input_sync(Playback3DCommand *command);
void overlay_sync(Playback3DCommand *command);