CAJ | 학술논문

针对动态地形中车辙实时可视化的要求,利用OpenGL帧缓冲区对象(framebuffer object)和顶点纹理拾取(vertex texture fetch)功能,提出了一种基于GPU的动态地形可视化算法.首先利用高程图(heightmap)直接产生初始的地形深度纹理,然后通过配置渲染状态生成车辆深度纹理.接着生成表示地表顶点下陷位移的地形深度偏移纹理,最后利用顶点纹理拾取实现了连续更新的车辙效果.给出了完整的动态地形可视化算法,最后通过实验证明该方法是可行的、有效的.
침대동태지형중차철실시가시화적요구,이용OpenGL정완충구대상(framebuffer object)화정점문리습취(vertex texture fetch)공능,제출료일충기우GPU적동태지형가시화산법.수선이용고정도(heightmap)직접산생초시적지형심도문리,연후통과배치선염상태생성차량심도문리.접착생성표시지표정점하함위이적지형심도편이문리,최후이용정점문리습취실현료련속경신적차철효과.급출료완정적동태지형가시화산법,최후통과실험증명해방법시가행적、유효적.
To meet the special requirement of the mrs visualization in dynamic terrain simulation,one GPU based solution is proposed in this paper,using OpenGL framebuffer object and vertex texture fetch.Firstly the height map to the initial terrain depth texture is translated directly,and then the vehicle depth texture is generated through a special render pass,and the depth offset map representing the complete set of displacement offsets for vertices is generated in success,and the continuous rots are realized through vertex texture fetch operation in the end.At last,the experiments prove that the method is feasible and valid.