Abstract: Based on the characteristics that indirect illumination distribution is in all directions and lack of variation with the change of its orientation, this paper uses an array of lights to calculate their direct illumination which is accelerated with GPU hardware implementation, and achieves rapid global illumination simulation. Experimental results show that this method is faster than physical rendering method and with good visual effect.

Key words: global illumination, direct light, indirect illumination, render

摘要： 根据间接光照分布在空间的各个方向、没有明确的方向性、在各个方向上光照强度分布比较均匀的特点，提出采用灯光阵列的方法，通过GPU硬件加速计算其直接光照效果，达到快速模拟全局光照的目的。实验结果表明，与常规的渲染算法比较，该方法在取得较好视觉效果的同时提高了渲染速度。

关键词: 全局光照, 直接光照, 间接光照, 渲染

CLC Number: 

• TN911.73