A METHOD TO RENDER A ROOT-LESS SCENE GRAPH WITH A USER CONTROLLED ORDER OR RENDERING

摘要

A scene graph (40) is provided which represents data and a set of processes thus providing an enhanced approach to the previously known scene graph concept. With this approach the scene graph (40) becomes a rendering description of the data rather than a world description. Previously known scene graphs represent a structure of object and their attributes. The scene graph (40) has a notation of the traversing order, which together with the types of nodes, the nodes position node functionality and node state determine the rendering order. Thus, any effects supported by the underlying rendering pipeline (1) can be expressed directly in the scene graph (40) by the user. An API is provided for the scene graph (40), controlling the actual rendering order and optimization to the user. The scene graph (40) is extensible allowing the user to experiment and express new rendering algorithms in the scene graph semantic.