利用opengl和glsl写的点精灵程序，有顶点着色器、几何着色器和片段着色器，简单易学有注释。-Use opengl and glsl point sprite written procedures, vertex shaders, geometry shaders and fragment shaders, easy to learn Notes.

用opengl实现了点精灵的效果，用到了VBO等功能-Use opengl achieve a point sprite effect uses VBO functions

explosion with sprites and opengl