1GL_EXT_clip_cull_distance
2https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_clip_cull_distance.txt
3GL_EXT_clip_cull_distance
4
5	GL_MAX_CLIP_DISTANCES_EXT 0x0D32
6	GL_CLIP_DISTANCE0_EXT 0x3000
7	GL_CLIP_DISTANCE1_EXT 0x3001
8	GL_CLIP_DISTANCE2_EXT 0x3002
9	GL_CLIP_DISTANCE3_EXT 0x3003
10	GL_CLIP_DISTANCE4_EXT 0x3004
11	GL_CLIP_DISTANCE5_EXT 0x3005
12	GL_CLIP_DISTANCE6_EXT 0x3006
13	GL_CLIP_DISTANCE7_EXT 0x3007
14	GL_MAX_CULL_DISTANCES_EXT 0x82F9
15	GL_MAX_COMBINED_CLIP_AND_CULL_DISTANCES_EXT 0x82FA
16