Hi all. from what i see linux doesn't wahe directly opengl support. so i read somewhere sdl does this work. some questions about linux. i installed sdl by hoping to use it for opengl but g++ doesn't see it. is there some command line options to getting info about configrations. i tryed to open some binaries but they shows empty forms. Or is there any other choice for using opengl on linux.

Linux is just the kernel, you need supporting progs for everything else. For example X for the windowing system. X also provides OpenGL support. Many vendor drivers tie into X to provide great hardware accelerated OpenGL support for example the NVidia drivers (gives full access to what you would have on Windows).

thanks .
so some notes on web says mesa using software rendering if this is correct how can i able to use direct/indirect hardware access on opengl like windows's opengl library.

isn't there any man who can cower how to use device op codes.?
or isn nwidia like wendowrs making it like a secret?
because like you guys says this is hardware.
but why big part of linux developers are forced to use software rendering
instead of direct accees of vga's options .?
or am i missed dont know something about this..?

Quote:Original post by Erkokite
Do you have the right drivers for your card? Try typing glxinfo into the command line and post the result. It should tell you if you have direct (hardware) rendering capability.

it looks like this supports some opengl extensions.
but i tryed executebles from codesamples.com for GLX and sdl GLX
one of them works but its realy slow like 4~fps/sec.[teapot sample]
driver says its mesa so is this mean my system uses software rendering
or isnt there any way to turn to harware based rendering system.?
thanks...
also is someone knows where can i find GLX libraries/headers


name of display: :0.0
display: :0 screen: 0
direct rendering: No
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: SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_allocate_memory,
GLX_MESA_copy_sub_buffer, GLX_MESA_swap_control,
GLX_MESA_swap_frame_usage, GLX_OML_swap_method, GLX_OML_sync_control,
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync,
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap
GLX version: 1.2
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_OML_swap_method, GLX_SGI_make_current_read, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_EXT_texture_from_pixmap
OpenGL vendor string: Mesa project: www.mesa3d.org
OpenGL renderer string: Mesa GLX Indirect
OpenGL version string: 1.2 (1.5 Mesa 6.5.1)
OpenGL extensions:
GL_ARB_depth_texture, GL_ARB_imaging, GL_ARB_multitexture,
GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_shadow,
GL_ARB_shadow_ambient, GL_ARB_texture_border_clamp,
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_mirrored_repeat,
GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle,
GL_ARB_transpose_matrix, GL_ARB_window_pos, GL_EXT_abgr, GL_EXT_bgra,
GL_EXT_blend_color, GL_EXT_blend_func_separate, GL_EXT_blend_logic_op,
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_clip_volume_hint,
GL_EXT_copy_texture, 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_polygon_offset, GL_EXT_rescale_normal,
GL_EXT_secondary_color, GL_EXT_separate_specular_color,
GL_EXT_shadow_funcs, GL_EXT_stencil_wrap, GL_EXT_subtexture,
GL_EXT_texture, GL_EXT_texture3D, GL_EXT_texture_edge_clamp,
GL_EXT_texture_env_add, GL_EXT_texture_env_combine,
GL_EXT_texture_env_dot3, GL_EXT_texture_lod_bias, GL_EXT_texture_object,
GL_EXT_texture_rectangle, GL_EXT_vertex_array, GL_APPLE_packed_pixels,
GL_ATI_texture_env_combine3, GL_ATI_texture_mirror_once,
GL_ATIX_texture_env_combine3, GL_IBM_texture_mirrored_repeat,
GL_INGR_blend_func_separate, GL_MESA_pack_invert, GL_MESA_ycbcr_texture,
GL_NV_blend_square, GL_NV_point_sprite, GL_NV_texgen_reflection,
GL_NV_texture_rectangle, GL_SGIS_generate_mipmap,
GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp,
GL_SGIS_texture_lod, GL_SGIX_depth_texture, GL_SGIX_shadow,
GL_SGIX_shadow_ambient, GL_SUN_multi_draw_arrays
glu version: 1.3
glu extensions:
GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess

visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x23 16 tc 0 16 0 r y . 5 6 5 0 0 16 0 0 0 0 0 0 0 None
0x24 16 tc 0 16 0 r y . 5 6 5 0 0 16 8 16 16 16 0 0 0 None
0x25 16 tc 0 24 0 r y . 5 6 5 8 0 16 8 16 16 16 16 0 0 None
0x26 16 tc 0 24 0 r . . 5 6 5 8 0 16 8 16 16 16 16 0 0 None
0x27 16 dc 0 16 0 r y . 5 6 5 0 0 16 0 0 0 0 0 0 0 None
0x28 16 dc 0 16 0 r y . 5 6 5 0 0 16 8 16 16 16 0 0 0 None
0x29 16 dc 0 24 0 r y . 5 6 5 8 0 16 8 16 16 16 16 0 0 None
0x2a 16 dc 0 24 0 r . . 5 6 5 8 0 16 8 16 16 16 16 0 0 None

Quote:Original post by songho
RSC_x,
X Window system allows 3D acceleration through DRI (Direct Rendering Infrastructure), but your glxinfo reports the direct rendering is not enabled yet.

I don't know what video card you have, but you can enable DRI by editing xorg.conf. (I am guessing you are also using X.Org.) You need to load the DRI module and to set usage permission in the config file.
*** Source Snippet Removed ***
Restart X (init 3; then, init 5), then run glxinfo again. If "direct rendering" shows Yes, then the hardware acceleration is enabled on your system.

this is part of xorg.conf.ini and some other similar files.
so is this means my nvidia card does not hawe support for DRI.?
is this just nvidia/debain spesific.?
bacause above bug report means its not available for nvidia.?
or is there any linux wersion which supports DRI on nvidia.?
sorry for long questions.
and thanks for information.
//---------------
Section "Module"
# Comments: see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=346408
Load "dbe" # Double Buffering Extension, very important.
Load "dri" # This shouldn't be available choice if user has selected driver vga, vesa or nv.
Load "glx" # GLX Extension.
Load "freetype" # Freetype fonts.
Load "type1" # Type 1 fonts
//-----------------