Research Of Hybrid Scene Rendering Based On Local And Remote In Mobile Environments

With the rapid development of computer graphics and mobile Internet,Three-dimensional mobile applications have become an important entertainment requirement in people's lives.Compared with the PC,mobile devices have less hardware resources and there are rather big amount of data that need to be addressed during rendering 3D scene.Therefore,how to quickly complete realistic graphics rendering of a 3D scene on mobile devices has become an urgent issue that needs to be addressed.The local and remote hybrid scene was studied in this article based on the method proposed by the research group.In the processing of hybrid rendering,the illumination rendering and shadow rendering technology have been studied.By adjusting the light and shadow parameters on the local scene and remote scene and improving the related algorithms,the seamless integration of hybrid scene on a mobile device has been achieved during real-time rendering.In this paper,the main work and research results are as follows:(1)Analysis of the overall framework of mobile graphics rendering.Analyzing the topic Research of Hybrid Rendering Based on Geometry and Images in Mobile Environments studied by the research group,including its main technical route and research,from which leads to the research of this paper.Then introducing the architecture of the study.(2)Illumination rendering of hybrid scene.Firstly,building the Phong illumination model on local scene and remote scene and recalculate the local illumination model based on illumination parameters of remote scene during scene integration state.Secondly,building the time interpolation function of the ambient light and adjusting the illumination parameters of hybrid scene.Lastly,using the Gouraud colouring for local scene and using the Phong colouring for remote scene based on the mobile device and server 's features and then achieve the integration on mobile device.(3)Shadow rendering of hybrid scene.Drawing the shadow in local scene and remote scene after finishing illumination rendering in hybrid scene,and the finally integration was done on mobile terminal.Among which the combination of SM algorithm and improved PCF algorithm is used for local shadow rendering,and the combination of improved PSSM algorithm and PCF algorithm is used for remote shadow rendering.Finally,a mobile graphic rendering system was designed and developed to apply the method in this article to different scenes for verifying the feasibility and versatility of the algorithms.The result of the experiment indicates that not only the seamless integration of the hybrid scene on mobile device is archived,but also the speed of rendering complex scene on mobile device is improved.