基于二维纹理映射的镜面反射加速绘制

针对物体表面镜面反射现象的绘制,提出了一种新的基于二维纹理映射技术的加速算法。将具有镜面反射表达式的Phong模型分解成多个简单的数学函数,预先离散采样计算后作为纹理对象传给显卡。使用OpenGL多重纹理技术,将每个纹理对象放入相应的纹理单元,分别设置其组合函数,将多个纹理的运算组合起来。将三角片顶点坐标及多组纹理坐标传入,从而实现了物体镜面反射现象的实时绘制。实验结果表明,该算法大大提高了绘制的性能。

Accelerated rendering for specular surface using 2D texture mapping

Aimed at the rendering for specular reflection of most real-world object surfaces,an accelerated rendering algorithm based on 2D texture mapping is proposed.Firstly,the Phong model with a specular expression is decomposed into multiple simple arithmetic functions,which are in turn discretely sampled and pre-computed,and the results are transferred to OpenGL rendering pipeline.Secondly,all texture targets are placed into corresponding texture units and combined with their combinatorial function.At last the c...