摘要
多年来由于硬件所提供的功能有限 ,实时绘制普遍采用基于顶点的光照计算技术 ,但是这种技术无法反映粗糙物体的光照细节 ,因此也就无法实时地绘制具有高度真实感细节的物体 .基于象素的光照计算技术采用新一代的硬件 ,可以实时地绘制粗糙物体的光照细节 ,具有很高的真实感 .首先 ,对基于象素的光照计算技术与基于顶点的光照计算技术进行比较 ,分析基于象素的光照计算技术的优点 ;然后 ,在介绍基于象素的光照计算技术的发展的同时 ,分析基于象素的光照计算技术的理论基础 ,比较了它与 Phong明暗处理硬件加速技术的关系 ;最后 ,在介绍最新硬件功能的基础上 。
Per Vertex Lighting has been employed many years in common for real time rendering. However, as regarding to bump map generation, Per Vertex Lighting is quite inefficient. In order to render scenes with detailed lighting, a technique of Per Pixel Lighting has been introduced in recent years based on the technology of newly developed hardware. The concept of Per Pixel Lighting is first described in comparison with Per Vertex Lighting. Then the theory on which Per Pixel Lighting is based, as well as its development are explained. Finally, by an introduction of new platform of hardware, we present our experimental examples on the platform to show the effect of Per Pixel Lighting.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2002年第9期861-865,共5页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金 (60 10 3 0 11)资助
