OpenGL® Extension Registry

Many OpenGL extensions, as well as extensions to related APIs like GLU, GLX, and WGL, have been defined by vendors and groups of vendors. The extension registry is maintained by SGI and contains specifications for all known extensions, written as modifications to the appropriate specification documents. The registry also defines naming conventions, guidelines for creating new extensions and writing suitable extension specifications, and other related documentation.

Extension Header Files

Because extensions vary from platform to platform and driver to driver, OpenGL developers can't expect interfaces for all extensions to be defined in the standard gl.h, glx.h, and wgl.h header files. Additional header files - glext.h, glxext.h, and wglext.h - are provided in the SDK area.

These headers define interfaces (enumerants, prototypes, and for platforms supporting dynamic runtime extension queries, such as Linux and Microsoft Windows, function pointer typedefs) for all registered extensions.

Documentation files

• OpenGL Shading Language Specification (version 1.10)
• How to Create Extensions
• Enumerant Allocation Policies
• Extension Template
• Extension Promotion Guidelines
• Enumerant/Opcode Registry
• OpenGL Syntax Rules (updated 2003/09/10)
• OpenGL Shading Language Extension Conventions (updated 2004/05/12)
• Extension Specification Example

ARB Extensions by number

1. GL_ARB_multitexture
2. GLX_ARB_get_proc_address
3. GL_ARB_transpose_matrix
4. WGL_ARB_buffer_region
5. GL_ARB_multisample
   GLX_ARB_multisample
   WGL_ARB_multisample
6. GL_ARB_texture_env_add
7. GL_ARB_texture_cube_map
8. WGL_ARB_extensions_string
9. WGL_ARB_pixel_format
10. WGL_ARB_make_current_read
11. WGL_ARB_pbuffer
12. GL_ARB_texture_compression
13. GL_ARB_texture_border_clamp
14. GL_ARB_point_parameters
15. GL_ARB_vertex_blend
16. GL_ARB_matrix_palette
17. GL_ARB_texture_env_combine
18. GL_ARB_texture_env_crossbar
19. GL_ARB_texture_env_dot3
20. WGL_ARB_render_texture
21. GL_ARB_texture_mirrored_repeat
22. GL_ARB_depth_texture
23. GL_ARB_shadow
24. GL_ARB_shadow_ambient
25. GL_ARB_window_pos
26. GL_ARB_vertex_program
27. GL_ARB_fragment_program
28. GL_ARB_vertex_buffer_object
29. GL_ARB_occlusion_query
30. GL_ARB_shader_objects
31. GL_ARB_vertex_shader
32. GL_ARB_fragment_shader
33. GL_ARB_shading_language_100
34. GL_ARB_texture_non_power_of_two
35. GL_ARB_point_sprite
36. GL_ARB_fragment_program_shadow
37. GL_ARB_draw_buffers
38. GL_ARB_texture_rectangle
39. GL_ARB_color_buffer_float
    WGL_ARB_pixel_format_float
    GLX_ARB_fbconfig_float
40. GL_ARB_half_float_pixel
41. GL_ARB_texture_float
42. GL_ARB_pixel_buffer_object

Non-ARB Extensions by number

1. GL_EXT_abgr
2. GL_EXT_blend_color
3. GL_EXT_polygon_offset
4. GL_EXT_texture
6. GL_EXT_texture3D
7. GL_SGIS_texture_filter4
9. GL_EXT_subtexture
10. GL_EXT_copy_texture
11. GL_EXT_histogram
12. GL_EXT_convolution
13. GL_SGI_color_matrix
14. GL_SGI_color_table
15. GL_SGIS_pixel_texture
16. GL_SGIX_pixel_texture
16. GL_SGIS_texture4D
17. GL_SGI_texture_color_table
18. GL_EXT_cmyka
20. GL_EXT_texture_object
21. GL_SGIS_detail_texture
22. GL_SGIS_sharpen_texture
23. GL_EXT_packed_pixels
24. GL_SGIS_texture_lod
25. GL_SGIS_multisample
    GLX_SGIS_multisample
27. GL_EXT_rescale_normal
28. GLX_EXT_visual_info
30. GL_EXT_vertex_array
31. GL_EXT_misc_attribute
32. GL_SGIS_generate_mipmap
33. GL_SGIX_clipmap
34. GL_SGIX_shadow
35. GL_SGIS_texture_edge_clamp
36. GL_SGIS_texture_border_clamp
37. GL_EXT_blend_minmax
38. GL_EXT_blend_subtract
39. GL_EXT_blend_logic_op
40. GLX_SGI_swap_control
41. GLX_SGI_video_sync
42. GLX_SGI_make_current_read
43. GLX_SGIX_video_source
44. GLX_EXT_visual_rating
45. GL_SGIX_interlace
47. GLX_EXT_import_context
49. GLX_SGIX_fbconfig
50. GLX_SGIX_pbuffer
51. GL_SGIS_texture_select
52. GL_SGIX_sprite
53. GL_SGIX_texture_multi_buffer
54. GL_EXT_point_parameters
55. GL_SGIX_instruments
56. GL_SGIX_texture_scale_bias
57. GL_SGIX_framezoom
58. GL_SGIX_tag_sample_buffer
60. GL_SGIX_reference_plane
61. GL_SGIX_flush_raster
62. GLX_SGI_cushion
63. GL_SGIX_depth_texture
64. GL_SGIS_fog_function
65. GL_SGIX_fog_offset
66. GL_HP_image_transform
67. GL_HP_convolution_border_modes
69. GL_SGIX_texture_add_env
74. GL_EXT_color_subtable
75. GLU_EXT_object_space_tess
76. GL_PGI_vertex_hints
77. GL_PGI_misc_hints
78. GL_EXT_paletted_texture
79. GL_EXT_clip_volume_hint
80. GL_SGIX_list_priority
81. GL_SGIX_ir_instrument1
83. GLX_SGIX_video_resize
84. GL_SGIX_texture_lod_bias
85. GLU_SGI_filter4_parameters
86. GLX_SGIX_dm_buffer
90. GL_SGIX_shadow_ambient
91. GLX_SGIX_swap_group
92. GLX_SGIX_swap_barrier
93. GL_EXT_index_texture
94. GL_EXT_index_material
95. GL_EXT_index_func
96. GL_EXT_index_array_formats
97. GL_EXT_compiled_vertex_array
98. GL_EXT_cull_vertex
100. GLU_EXT_nurbs_tessellator
101. GL_SGIX_ycrcb
102. GL_EXT_fragment_lighting
110. GL_IBM_rasterpos_clip
111. GL_HP_texture_lighting
112. GL_EXT_draw_range_elements
113. GL_WIN_phong_shading
114. GL_WIN_specular_fog
115. GLX_SGIS_color_range
     GL_SGIS_color_range
117. GL_EXT_light_texture
119. GL_SGIX_blend_alpha_minmax
120. GL_EXT_scene_marker
     GLX_EXT_scene_marker
127. GL_SGIX_pixel_texture_bits
129. GL_EXT_bgra
132. GL_SGIX_async
133. GL_SGIX_async_pixel
134. GL_SGIX_async_histogram
135. GL_INTEL_texture_scissor
136. GL_INTEL_parallel_arrays
137. GL_HP_occlusion_test
138. GL_EXT_pixel_transform
139. GL_EXT_pixel_transform_color_table
141. GL_EXT_shared_texture_palette
142. GLX_SGIS_blended_overlay
144. GL_EXT_separate_specular_color
145. GL_EXT_secondary_color
146. GL_EXT_texture_env
147. GL_EXT_texture_perturb_normal
148. GL_EXT_multi_draw_arrays
     GL_SUN_multi_draw_arrays
149. GL_EXT_fog_coord
155. GL_REND_screen_coordinates
156. GL_EXT_coordinate_frame
158. GL_EXT_texture_env_combine
159. GL_APPLE_specular_vector
160. GL_APPLE_transform_hint
163. GL_SUNX_constant_data
164. GL_SUN_global_alpha
165. GL_SUN_triangle_list
166. GL_SUN_vertex
167. WGL_EXT_display_color_table
168. WGL_EXT_extensions_string
169. WGL_EXT_make_current_read
170. WGL_EXT_pixel_format
171. WGL_EXT_pbuffer
172. WGL_EXT_swap_control
173. GL_EXT_blend_func_separate
174. GL_INGR_color_clamp
175. GL_INGR_interlace_read
176. GL_EXT_stencil_wrap
177. WGL_EXT_depth_float
178. GL_EXT_422_pixels
179. GL_NV_texgen_reflection
181. GL_SGIX_texture_range
182. GL_SUN_convolution_border_modes
183. GLX_SUN_get_transparent_index
185. GL_EXT_texture_env_add
186. GL_EXT_texture_lod_bias
187. GL_EXT_texture_filter_anisotropic
188. GL_EXT_vertex_weighting
189. GL_NV_light_max_exponent
190. GL_NV_vertex_array_range
191. GL_NV_register_combiners
192. GL_NV_fog_distance
193. GL_NV_texgen_emboss
194. GL_NV_blend_square
195. GL_NV_texture_env_combine4
196. GL_MESA_resize_buffers
197. GL_MESA_window_pos
198. GL_EXT_texture_compression_s3tc
199. GL_IBM_cull_vertex
200. GL_IBM_multimode_draw_arrays
201. GL_IBM_vertex_array_lists
206. GL_3DFX_texture_compression_FXT1
207. GL_3DFX_multisample
208. GL_3DFX_tbuffer
209. WGL_EXT_multisample
     GL_EXT_multisample
210. GL_SGIX_vertex_preclip
     GL_SGIX_vertex_preclip_hint
212. GL_SGIX_resample
214. GL_SGIS_texture_color_mask
215. GLX_MESA_copy_sub_buffer
216. GLX_MESA_pixmap_colormap
217. GLX_MESA_release_buffers
218. GLX_MESA_set_3dfx_mode
220. GL_EXT_texture_env_dot3
221. GL_ATI_texture_mirror_once
222. GL_NV_fence
223. GL_IBM_static_data
224. GL_IBM_texture_mirrored_repeat
225. GL_NV_evaluators
226. GL_NV_packed_depth_stencil
227. GL_NV_register_combiners2
228. GL_NV_texture_compression_vtc
229. GL_NV_texture_rectangle
230. GL_NV_texture_shader
231. GL_NV_texture_shader2
232. GL_NV_vertex_array_range2
233. GL_NV_vertex_program
234. GLX_SGIX_visual_select_group
235. GL_SGIX_texture_coordinate_clamp
237. GLX_OML_swap_method
238. GLX_OML_sync_control
239. GL_OML_interlace
240. GL_OML_subsample
241. GL_OML_resample
242. WGL_OML_sync_control
243. GL_NV_copy_depth_to_color
244. GL_ATI_envmap_bumpmap
245. GL_ATI_fragment_shader
246. GL_ATI_pn_triangles
247. GL_ATI_vertex_array_object
248. GL_EXT_vertex_shader
249. GL_ATI_vertex_streams
250. WGL_I3D_digital_video_control
251. WGL_I3D_gamma
252. WGL_I3D_genlock
253. WGL_I3D_image_buffer
254. WGL_I3D_swap_frame_lock
255. WGL_I3D_swap_frame_usage
256. GL_ATI_element_array
257. GL_SUN_mesh_array
258. GL_SUN_slice_accum
259. GL_NV_multisample_filter_hint
260. GL_NV_depth_clamp
261. GL_NV_occlusion_query
262. GL_NV_point_sprite
263. WGL_NV_render_depth_texture
264. WGL_NV_render_texture_rectangle
265. GL_NV_texture_shader3
266. GL_NV_vertex_program1_1
267. GL_EXT_shadow_funcs
268. GL_EXT_stencil_two_side
269. GL_ATI_text_fragment_shader
270. GL_APPLE_client_storage
271. GL_APPLE_element_array
272. GL_APPLE_fence
273. GL_APPLE_vertex_array_object
274. GL_APPLE_vertex_array_range
275. GL_APPLE_ycbcr_422
276. GL_S3_s3tc
277. GL_ATI_draw_buffers
278. WGL_ATI_pixel_format_float
279. GL_ATI_texture_env_combine3
280. GL_ATI_texture_float
281. GL_NV_float_buffer
     WGL_NV_float_buffer
282. GL_NV_fragment_program
283. GL_NV_half_float
284. GL_NV_pixel_data_range
285. GL_NV_primitive_restart
286. GL_NV_texture_expand_normal
287. GL_NV_vertex_program2
288. GL_ATI_map_object_buffer
289. GL_ATI_separate_stencil
290. GL_ATI_vertex_attrib_array_object
291. GL_OES_byte_coordinates
292. GL_OES_fixed_point
293. GL_OES_single_precision
294. GL_OES_compressed_paletted_texture
295. GL_OES_read_format
296. GL_OES_query_matrix
297. GL_EXT_depth_bounds_test
298. GL_EXT_texture_mirror_clamp
299. GL_EXT_blend_equation_separate
300. GL_MESA_pack_invert
301. GL_MESA_ycbcr_texture
302. GL_EXT_pixel_buffer_object
303. GL_NV_fragment_program_option
304. GL_NV_fragment_program2
305. GL_NV_vertex_program2_option
306. GL_NV_vertex_program3
307. GLX_SGIX_hyperpipe
308. GLX_MESA_agp_offset
309. GL_EXT_texture_compression_dxt1
310. GL_EXT_framebuffer_object
311. GL_GREMEDY_string_marker
312. GL_EXT_packed_depth_stencil
313. WGL_3DL_stereo_control
314. GL_EXT_stencil_clear_tag
315. GL_EXT_texture_sRGB
316. GL_EXT_framebuffer_blit
317. GL_EXT_framebuffer_multisample
318. GL_MESAX_texture_stack

Unnumbered extensions

These extensions have not yet been assigned numbers, are still under development, or were abandoned (but are kept in the extension registry for reference purposes).

• GL_EXT_static_vertex_array
• GL_EXT_vertex_array_set
• GL_EXT_vertex_array_setXXX
• GL_SGIX_fog_texture
• GL_SGIX_fragment_specular_lighting