O p e n G L是图形硬件的一个软件接口。这份资料 看起来 比较容易上手，适应初学着。-O pen GL is a software interface to graphics hardware. This information seems relatively easy to use, adapt to beginners with.

Shadow Mapping with Today’s OpenGL Hardware. 使用现今的opengl硬件实现阴影贴图。 01年的资料，有点老。但是学习原理还是不错的。-Shadow Mapping with Today’s OpenGL Hardware CEDEC 2001 Tokyo, Japan Shadow Mapping with Today’s OpenGL Hardware CEDEC 2001 Tokyo, Japan