1GL_ATIX_point_sprites
2http://www.ati.com/developer/atiopengl.pdf
3GL_ATIX_point_sprites
4
5	GL_TEXTURE_POINT_MODE_ATIX 0x60B0
6	GL_TEXTURE_POINT_ONE_COORD_ATIX 0x60B1
7	GL_TEXTURE_POINT_SPRITE_ATIX 0x60B2
8	GL_POINT_SPRITE_CULL_MODE_ATIX 0x60B3
9	GL_POINT_SPRITE_CULL_CENTER_ATIX 0x60B4
10	GL_POINT_SPRITE_CULL_CLIP_ATIX 0x60B5
11