A method to composite image data into an image frame and transmit the image frame to a controller for display on a device. The image has a predetermined portion having a QoS requirement higher than the rest of the image. Based on a performance level of the system, the predetermined portion with the image data is composited into the image frame at the host device if the host device has sufficient performance capability. If the performance level is not sufficient, then the host device composites the image data without the predetermined portion and transmits it to the controller. The host device also transmits information regarding the predetermined portion to the controller independently of the image frame, so that the controller can composite the received image frame with the predetermined portion based on the information to produce the image for display.