It plays very important role to generate photo-realistic rendering results for both of virtual reality system and computer games. A fast and powerful method in calculating Cook-Torrance model by using deferred lighting technique is presented. 真实感图形的实时绘制是虚拟现实技术和计算机游戏软件的一个重要组成部分,笔者提出了采用延时光照技术的Cook-Torrance光照模型快速计算方法。