parallax occlusion map是应用在计算机图形中的一项重要技术。该技术通过建立和利用描述物体表面的高度的height texture来模拟物体表面复杂的模型，以减少场景中多边形的数目，从而降低了性能的损耗。-parallax occlusion map is used in computer graphics.This is an important technology. Through the establishment and use of the technology described in the height of the surface height texture to simulate the surface complex model, in order to reduce the number of polygons in the scene, thereby reducing the performance loss.