3D非均匀直线网格GPU体绘制方法研究

计算机图形硬件技术的快速发展可以用来加速可视化过程，为此针对非均匀直线网格，给出了基于均匀辅助网格的CPU光线投射算法、基于辅助纹理的GPU光线投射算法，以及基于切片的3D纹理体绘制算法，并在Nvidia Geforce 6800GT图形卡上对这些算法进行了测试。结果表明，GPU算法远远快于CPU算法，而基于切片的3D纹理体绘制算法则快于GPU光线投射算法。

GPU Volume Rendering for 3D Non-uniform Rectilinear Grid

Because the GPU technology is developed quickly, so it can be used to speed the process of visualization. Three algorithms for non-uniform rectilinear grid, which include CPU raycasting based on uniform auxiliary grid, GPU raycasting based on auxiliary texture, and 3D texture volume rendering based on slices, are provided in this paper. The algorithms are tested with Nvidia Geforce 6800GT card. It is shown that the GPU algorithm is far faster than CPU algorithm, and the 3D volume rendering is faster than GPU raycasting.