METHODS OF OPTIMIZATION 3D GRAPHICS RENDERING ON TILE-BASED GRAPHICSPROCESSORS BY THE EXAMPLE OF A VISUALIZATION MODELING N-BODY GRAVITATIONAL INTERACTIONS

Abstract

Visualization of physical phenomena such as gravitational interactions of celestial bodies requires rendering a large number of identical 2D and 3D objects. Unfortunately, tile-based deferred architectures of graphical accelerators, popular on the mobile market, are not suitable to process a large number of rendering requests. On such devices, it is necessary to use various optimization techniques to minimize the number of draw calls. In this work, we present implementation of a graphical engine that maintains a tree of state changes for every scene object to allow resubmission of only necessary sets of data to perform rendering. Furthermore, our system minimizes the number of objects to transfer by merging meshes and performing geometry instancing. The system also offloads the data bus by computing and sending only the differences between geometry meshes. The speedup relative to an unoptimized version is demonstrated by measuring the speed of systems to visualize modeling results of gravitational interactions between a large number of celestial bodies.