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openbird
04-04-2007, 01:55 AM
glWindowPos2i() and glWindowPos2iARB()

they are the same function ?

Bob
04-04-2007, 02:07 AM
They do the same thing, but comes from different sources. If the OpenGL version number is less than 1.4, the ARB-less version may not be available. If the ARB_window_pos extension is not supported, the ARB-version may not be available.

openbird
04-04-2007, 03:55 AM
thx Bob, so i assume they are the same and have same
arguments?

such as

glWindowPos2i(0,0)

will perform the same as glWindowPos2iARB(0,0)

am i right?

Bob
04-04-2007, 03:57 AM
That is correct, yes.

openbird
04-04-2007, 04:06 AM
you mean the version like this

"client glx version string: 1.3"?


on my system:

glxinfo return:


name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.2
server glx extensions:
GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method,
GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_hyperpipe,
GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig, GLX_MESA_copy_sub_buffer
client glx vendor string: ATI
client glx version string: 1.3
client glx extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_import_context,
GLX_ARB_get_proc_address, GLX_SGI_video_sync, GLX_ARB_multisample,
GLX_ATI_pixel_format_float, GLX_ATI_render_texture
GLX version: 1.2
GLX extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_import_context,
GLX_ARB_multisample
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Mobility Radeon X1400
OpenGL version string: 2.0.6334 (8.34.8)
OpenGL extensions:
GL_ARB_multitexture, GL_EXT_texture_env_add, GL_EXT_compiled_vertex_array,
GL_S3_s3tc, GL_ARB_depth_texture, GL_ARB_fragment_program,
GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader,
GL_ARB_multisample, GL_ARB_occlusion_query, GL_ARB_point_parameters,
GL_ARB_point_sprite, GL_ARB_shader_objects, GL_ARB_shading_language_100,
GL_ARB_shadow, GL_ARB_shadow_ambient, GL_ARB_texture_border_clamp,
GL_ARB_texture_compression, GL_ARB_texture_cube_map,
GL_ARB_texture_env_add, GL_ARB_texture_env_combine,
GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3,
GL_ARB_texture_float, GL_ARB_texture_mirrored_repeat,
GL_ARB_texture_rectangle, GL_ARB_transpose_matrix, GL_ARB_vertex_blend,
GL_ARB_vertex_buffer_object, GL_ARB_pixel_buffer_object,
GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ARB_window_pos,
GL_ARB_draw_buffers, GL_ATI_draw_buffers, GL_ATI_element_array,
GL_ATI_envmap_bumpmap, GL_ATI_fragment_shader, GL_ATI_map_object_buffer,
GL_ATI_separate_stencil, GL_ATI_shader_texture_lod,
GL_ATI_texture_compression_3dc, GL_ATI_texture_env_combine3,
GL_ATI_texture_float, GL_ATI_texture_mirror_once,
GL_ATI_vertex_array_object, GL_ATI_vertex_attrib_array_object,
GL_ATI_vertex_streams, GL_ATIX_texture_env_combine3,
GL_ATIX_texture_env_route, GL_ATIX_vertex_shader_output_point_size,
GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, GL_EXT_blend_func_separate,
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_clip_volume_hint,
GL_EXT_draw_range_elements, GL_EXT_fog_coord, GL_EXT_framebuffer_object,
GL_EXT_multi_draw_arrays, GL_EXT_packed_pixels, GL_EXT_point_parameters,
GL_EXT_rescale_normal, GL_EXT_secondary_color,
GL_EXT_separate_specular_color, GL_EXT_shadow_funcs, GL_EXT_stencil_wrap,
GL_EXT_texgen_reflection, GL_EXT_texture3D,
GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map,
GL_EXT_texture_edge_clamp, GL_EXT_texture_env_combine,
GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic,
GL_EXT_texture_lod_bias, GL_EXT_texture_mirror_clamp,
GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_vertex_array,
GL_EXT_vertex_shader, GL_HP_occlusion_test, GL_NV_blend_square,
GL_NV_occlusion_query, GL_NV_texgen_reflection, GL_SGI_color_matrix,
GL_SGIS_generate_mipmap, GL_SGIS_texture_border_clamp,
GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays

Bob
04-04-2007, 04:49 AM
You should look at the OpenGL version, which is reported as 2.0. Also, the ARB_window_pos extension is reported, so you can access both versions.