Multiprocessor Systems-on-Chips

11.6. 3D Rendering QoS Application

To test the effectiveness of our approach, a real-life application, the QoS control part of a 3D rendering algorithm developed in the MPEG21 context, is used.

Figure 11-6 shows how 3D decoding/rendering is typically performed: a 2D texture and a 3D mesh are first decoded and then mapped together to give the illusion of a scene with 3D objects. This kind of 3D rendering requires that each frame of the rendering process be recalculated completely. The required computation power depends significantly on its number of triangles. When the available resources are not enough to render the object, instead of letting the system break down (totally stopping the decoding and rendering during a period of time), the corresponding ...