本文通过对三维图形引擎流水线的研究，建立了一个简单的图形渲染引擎以满足对案件现场重建的需要。研究的主要内容包括下面几点：

1)3D引擎中的数学运算。

2)3D引擎中的基本3D流水线。

物体数据或渲染列表中多边形数据在流水线中各个坐标系之间的转换。

3)光照和着色处理

研究四种光源类型：点光源、定点光源、聚光灯和环境光源，两种着色模式：

恒定着色和Gottraud着色。

4)纹理映射

插值计算纹理坐标和一维空间采样。

5)Z缓存

-Based on the three-dimensional graphics engine pipeline studies, the establishment of a simple graphics rendering engine to meet the needs of crime scene reconstruction. The main contents include the following points: 1) 3D engine math. 2) 3D engine to the basic 3D pipeline. Rendering objects in the list data or polygon data in the pipeline between the coordinate system conversion. 3) Treatment of four kinds of light and color light types: point source, point, spot and ambient light, two kinds of color modes: constant shading and Gottraud coloring. 4) The interpolated texture mapping coordinates and one-dimensional texture sampling. 5) Z Cache