使用多重纹理实时绘制Phong高光表面

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。

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

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.