                            2  K   	  }    List of SGI extensions to OpenGL; changes must be synced with 'extensions.reserved'

    #   Name                              Supported By                    sampleGL
    -   ----                              ------------                    --------
    1   EXT_abgr                          SGI,KGC,IBM,Sun                 1.0.16
    2   EXT_blend_color                   SGI,KGC,Intergraph,HP,Sun       1.0.16
    3   EXT_polygon_offset                SGI,KGC,Intergraph,IBM,HP       1.0.16
    4   EXT_texture                       SGI,KGC,HP,Intergraph           1.0.16
    5 
    6   EXT_texture3D                     SGI,E&S,IBM,HP,Sun,HP
    7   SGIS_texture_filter4              SGI,KGC
    8 
    9   EXT_subtexture                    SGI,KGC,Intergraph,HP,IBM(1)    1.0.16
   10   EXT_copy_texture                  SGI,E&S,HP
   11   EXT_histogram                     SGI,KGC, Intergraph,Sun
   12   EXT_convolution                   SGI,KGC,HP,Sun
   13   SGI_color_matrix                  SGI
   14   SGI_color_table                   SGI,HP(partial),Sun
   15   SGIX_pixel_texture                SGI
   16   SGIS_texture4D                    SGI
   17   SGI_texture_color_table           SGI,E&S,HP,Sun
   18   EXT_cmyka                         SGI,E&S
   19 
   20   EXT_texture_object                SGI,KGC,Intergraph,IBM          1.0.16
   21   SGIS_detail_texture               SGI,KGC
   22   SGIS_sharpen_texture              SGI
   23   EXT_packed_pixels                 SGI, Intergraph, E&S
   24   SGIS_texture_lod                  SGI
   25   SGIS_multisample                  SGI
   26   SGIS_premultiply_blend            SGI
   27   EXT_rescale_normal                IBM,Sun
   28   EXT_visual_info                   SGI,KGC,IBM                     1.0.16
   29 
   30   EXT_vertex_array                  SGI,KGC,Intergraph,IBM,HP,DEC   1.0.15
   31   EXT_misc_attribute               
   32   SGIS_generate_mipmap              SGI,HP
   33   SGIX_clipmap                      SGI
   34   SGIX_shadow                       SGI,HP
   35   SGIS_texture_edge_clamp           SGI,Intergraph,HP
   36   SGIS_texture_border_clamp         SGI,Intergraph,HP
   37   EXT_blend_minmax                  SGI,KGC,Intergraph,IBM,HP,Sun   1.0.16
   38   EXT_blend_subtract                SGI,KGC,Intergraph,IBM,HP,Sun   1.0.16
   39   EXT_blend_logic_op                SGI,KGC,Intergraph,HP,IBM       1.0.16
   40   SGI_swap_control                  SGI
   41   SGI_video_sync                    SGI
   42   SGI_make_current_read             SGI
   43   SGIX_video_source                 SGI
   44   EXT_visual_rating                 SGI,IBM,HP                      1.0.16
   45   SGIX_interlace                    SGI
   47   EXT_import_context                SGI,IBM                         1.0.16
   48 
   49   SGIX_fbconfig                     SGI
   50   SGIX_pbuffer                      SGI
   51   SGIS_texture_select               SGI
   52   SGIX_sprite                       SGI
   54   SGIS_point_parameters             SGI
   55   SGIX_instruments                  SGI
   56   SGIX_texture_scale_bias           SGI,HP
   57   SGIX_framezoom                    SGI
   58   SGIX_tag_sample_buffer            SGI
   60   SGIX_reference_plane              SGI
   61   SGIX_flush_raster                 SGI
   62   SGI_cushion                       SGI
   63   SGIX_depth_texture                SGI,HP
   64   SGIS_fog_func                     SGI
   65   SGIX_fog_offset                   SGI
   66   HP_image_transform                HP,Sun
   67   HP_convolution_border_modes       HP
   68   INGR_palette_buffer               Intergraph
   69   SGIX_texture_add_env              SGI
   74   EXT_color_subtable               
   75   EXT_object_space_tess             SGI
   76   PGI_vertex_hints                  TGS
   77   PGI_misc_hints                    TGS
   78   EXT_paletted_texture              MS, SGI
   79   EXT_clip_disable                 
   80   SGIX_list_priority                SGI
   81   SGIX_ir_instrument1               SGI
   83   SGIX_video_resize                 SGI
   84   SGIX_texture_lod_bias             SGI
   85   SGIS_filter4_parameters           SGI
   86   SGIX_dmbuffer                     SGI
   91   SGIX_swap_group                   SGI
   92   SGIX_swap_barrier                 SGI
   93   EXT_index_texture                 SGI,Intel
   94   EXT_index_material                SGI,Intel
   95   EXT_index_func                    SGI,Intel
   96   EXT_index_array_formats           SGI,Intel
   97   EXT_compiled_vertex_array         SGI,Intel
   98   EXT_cull_vertex                   SGI,Intel
  100   EXT_nurbs_tessellator             SGI
  101   SGIX_ycrcb                        SGI
  102   SGIX_fragment_lighting            SGI
  110   IBM_rasterpos_clip                IBM
  111   HP_texture_lighting               HP
  112   WIN_draw_range_elements           MS
  113   WIN_phong_shading                 MS
  114   WIN_specular_fog                  MS
  116   SGIX_multitexture                 SGI
  117   SGIX_light_texture                SGI
  119   SGIX_blend_alpha_minmax           SGI
  120   EXT_scene_marker                 
  126   SGIX_impact_pixel_texture         SGI
  129   EXT_bgra                          MS
  135   INTEL_texturescissor              Intel
  136   INTEL_parallel_arrays             Intel
  137   HP_occlusion_test                 HP
  138   EXT_pixel_transform               HP, Sun
  139   EXT_pixel_transform_color_table   HP, Sun
  141   EXT_shared_texture_palette        SGI,3dfx?,3D Labs?
  145   EXT_secondary_color               Nvidia,Rendition,3dfx,other PC IHVs
  146   EXT_texture_env                   ???
  147   SGIX_texture_perturb_normal       ???
  148   EXT_multi_draw_arrays             Sun,IBM
  149   EXT_fog_coord                     Nvidia,Rendition,3dfx,other PC IHVs

(1)Note that IBM also supports a subset of the texture extension.

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