使用多重纹理实时绘制Phong高光表面  

Real-Time Rendering for the Phong-Specular Surface by Multitexture

作　　者：朱国仲[1] 张帆[1] 布辉[1] 

机构地区：[1]华北水利水电学院信息工程学院,河南郑州450011

出　　处：《计算机工程与科学》2011年第7期85-88,共4页Computer Engineering & Science

基　　金：郑州市科技攻关项目(10PTGS507-3)

摘　　要：物体表面的高光现象均由镜面反射的一个复杂的非线性表达式描述,这为实时绘制带来了困难,由此本文提出了一种使用纹理映射技术绘制高光表面的方法。首先将具有镜面反射表达式的Phong模型分解成多个预计算的函数,然后存储为纹理图,最后使用多重纹理技术将这些纹理组合起来,实现高光表面的绘制。实验结果表明,本文算法大大提高了绘制的性能。The highlights of real-world objects are usually induced by specular reflection which has a complex non-linear expression and brings difficulties to its real-time rendering.Therefore,a real-time rendering technology using texture mapping for the specular surface is proposed in this paper.In detail,the Phong BRDF model with a specular expression is decomposed into multiple pre-computed functions,which are in turn stored as texture maps.Combining these textures by multitexture leads to substantial rendering for specular surfaces.The experimental results show that our algorithm improves significantly the rendering performance.

关 键 词：高光 镜面反射 纹理映射 PHONG模型 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]