Adaptive PN Triangles Refinement Pipeline for Mobile Terminals

Analyzing the contradiction between the demand of 3D real-time rendering and the hardware performance for mobile terminals, we proposed an adaptive mesh refinement pipeline based on Point Normal triangles.First, the PN triangle local refinement method was expanded to mobile platform. Furthermore, the silhouette feature criterion was employed in the view-dependent refinement of multiresolution meshes.At last, the vertex control function was designed to ensure continuous transition between different patches.It was more adaptive than the semi-regular adaptive refinement algorithm. The refinement factor patterns were optimized from exponent to linear.The experimental results of the prototype system show that the refinement pipeline effectively reduces the sum of tessellation triangles, ensures the rendering quality, and improves rendering speed.It is suitable for current mobile terminals.