Bug 24093

Summary: can't render stuff using webgl on intel
Product: Mesa Reporter: martin <mnemo>
Component: Mesa coreAssignee: mesa-dev
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium CC: thomas.jones
Version: unspecifiedKeywords: NEEDINFO
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments: glxinfo.txt

Description martin 2009-09-22 12:53:39 UTC 
On boxes with intel cards, I can't get the WebGL samples to run using Firefox trunk nightlies.

Repro steps:
1. wget http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/firefox-3.7a1pre.en-US.linux-x86_64.tar.bz2
2. unp firefox-3.7a1pre.en-US.linux-x86_64.tar.bz2
3. cd firefox
4. ./firefox
5. open about:config and type "webgl"
6. set "webgl.enabled_for_all_sites" to "true"
7. if firefox prints an error to the terminal saying it can't find mesa, you need to set "webgl.osmesalib" as well
8. restart firefox (not sure this is needed but why not)
9. open up the webgl sample page: http://people.mozilla.com/~vladimir/webgl/spore/sporeview.html

10. for intel machines (G45), I see this firefox error:

Canvas 3D: creating PBuffer...
nsGLPbufferGLX: gActiveBuffers: 1
Canvas 3D: GLX_SGIX_pbuffer not supported
nsGLPbufferOSMESA: gActiveBuffers: 1
Can't find symbol 'OSMesaCreateContextExt'

---

What is GLX_SGIX_pbuffer? Is it really necessary to have this in the driver to render WebGL? Is it hard to implement?
Comment 1 Gordon Jin 2009-09-22 17:52:35 UTC 
Is this regression?
Comment 2 Ian Romanick 2009-09-22 18:50:42 UTC 
I think you pointed it at the wrong thing.  OSMesa is not the same thing as the regular 3D driver.  It's a special version of Mesa exclusively for off-screen (hence the OS) rendering.  Your distro may not have installed this for you.  On Debian it's libosmesa, and on Fedora 11 it's mesa-libOSMesa.  I don't know what it would be on other distros.
Comment 3 martin 2009-09-23 10:02:44 UTC 
Yes, I was point to the main mesa .so file. My bad. However, if I install libosmesa6 and then set webgl.osmesalib to "/usr/lib/libOSMesa.so.6.5.3" (or any of the other .so files listed in "dpkg -L libosmesa6" I keep getting this error:

Canvas 3D: creating PBuffer...
nsGLPbufferGLX: gActiveBuffers: 1
Canvas 3D: GLX_SGIX_pbuffer not supported
nsGLPbufferOSMESA: gActiveBuffers: 1
Surface: 0x7f33ed1511a0
Resize: 2 2
Can't find symbol 'ActiveTexture'
Canvas 3D: GLWrap init failed

This is karmic so I got "7.6.0~git20090817.7c422387-0ubuntu5" installed. Did intel have support in this version?
Comment 4 Ian Romanick 2009-09-23 11:41:02 UTC 
OSMesa has nothing to do with any hardware driver.  It's an entirely software implementation.  I'm pretty sure it supports those GLX extensions, so I'm not sure what the problem is.  I'm re-assigning to mesa3d-dev because this is pretty much the limit of my OSMesa knowledge.  Sorry.
Comment 5 Brian Paul 2009-10-01 13:15:52 UTC 
OSMesa doesn't have any GLX features/extensions.  It has a totally different interface.
I'm not familiar with WebGL either.  Hopefully you can debug this further on your own.
Comment 6 Thomas Jones 2009-10-20 15:56:39 UTC 
This is not a problem with were osmesa is pointing, I can confirm that for some reason on mesa 7.6 the GLX_SGIX_pbuffer extention is missing (and IIRC WAS present on mesa 7.5), in fact glxinfo shows NO GLX extensions...

possibly it would be a good idea to change the description of the bug to reflect the fact that it is releated to pbuffers being missing.

my glxinfo output:

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_import_context, GLX_EXT_texture_from_pixmap, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer, 
    GLX_OML_swap_method, GLX_SGI_make_current_read, GLX_SGI_swap_control, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_SGIX_visual_select_group
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_MESA_swap_frame_usage, GLX_OML_swap_method, GLX_SGI_make_current_read, 
    GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, 
    GLX_EXT_texture_from_pixmap
OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Mobile Intel�� GM45 Express Chipset GEM 20090712 2009Q2 RC3 
OpenGL version string: 2.1 Mesa 7.6
OpenGL shading language version string: 1.20
OpenGL extensions:
    GL_ARB_copy_buffer, GL_ARB_depth_texture, GL_ARB_draw_buffers, 
    GL_ARB_fragment_program, GL_ARB_fragment_program_shadow, 
    GL_ARB_fragment_shader, GL_ARB_framebuffer_object, 
    GL_ARB_half_float_pixel, GL_ARB_map_buffer_range, GL_ARB_multisample, 
    GL_ARB_multitexture, GL_ARB_occlusion_query, GL_ARB_pixel_buffer_object, 
    GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_seamless_cube_map, 
    GL_ARB_shader_objects, GL_ARB_shading_language_100, 
    GL_ARB_shading_language_120, GL_ARB_shadow, GL_ARB_sync, 
    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_mirrored_repeat, 
    GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle, 
    GL_ARB_transpose_matrix, GL_ARB_vertex_array_bgra, 
    GL_ARB_vertex_array_object, GL_ARB_vertex_buffer_object, 
    GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ARB_window_pos, 
    GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, 
    GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate, 
    GL_EXT_blend_logic_op, GL_EXT_blend_minmax, GL_EXT_blend_subtract, 
    GL_EXT_cull_vertex, GL_EXT_compiled_vertex_array, GL_EXT_copy_texture, 
    GL_EXT_draw_range_elements, GL_EXT_framebuffer_object, 
    GL_EXT_framebuffer_blit, GL_EXT_fog_coord, GL_EXT_gpu_program_parameters, 
    GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil, 
    GL_EXT_packed_pixels, GL_EXT_pixel_buffer_object, GL_EXT_point_parameters, 
    GL_EXT_polygon_offset, GL_EXT_provoking_vertex, GL_EXT_rescale_normal, 
    GL_EXT_secondary_color, GL_EXT_separate_specular_color, 
    GL_EXT_shadow_funcs, GL_EXT_stencil_two_side, 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_filter_anisotropic, GL_EXT_texture_lod_bias, 
    GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_texture_sRGB, 
    GL_EXT_texture_swizzle, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, 
    GL_3DFX_texture_compression_FXT1, GL_APPLE_client_storage, 
    GL_APPLE_packed_pixels, GL_APPLE_vertex_array_object, 
    GL_ATI_blend_equation_separate, GL_ATI_envmap_bumpmap, 
    GL_ATI_texture_env_combine3, GL_ATI_separate_stencil, 
    GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip, 
    GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate, 
    GL_MESA_pack_invert, GL_MESA_texture_signed_rgba, GL_MESA_ycbcr_texture, 
    GL_MESA_window_pos, GL_NV_blend_square, GL_NV_light_max_exponent, 
    GL_NV_point_sprite, GL_NV_texture_env_combine4, GL_NV_texture_rectangle, 
    GL_NV_texgen_reflection, GL_NV_vertex_program, GL_NV_vertex_program1_1, 
    GL_OES_read_format, GL_SGIS_generate_mipmap, GL_SGIS_texture_border_clamp, 
    GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays

72 GLX Visuals
   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
----------------------------------------------------------------------
0x21 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0x22 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xd7 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xd8 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xd9 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xda 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xdb 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xdc 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xdd 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xde 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xdf 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xe0 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xe1 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xe2 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xe3 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xe4 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xe5 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xe6 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xe7 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xe8 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xe9 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xea 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xeb 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xec 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xed 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xee 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xef 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xf0 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xf1 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xf2 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xf3 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xf4 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xf5 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xf6 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xf7 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xf8 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xf9 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xfa 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xfb 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xfc 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xfd 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xfe 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xff 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x100 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x101 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x102 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x103 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x104 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x105 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x106 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x107 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x108 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x109 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x10a 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x10b 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x10c 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x10d 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x10e 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x10f 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x110 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x111 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0x112 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0x113 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0x114 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0x115 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0x116 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0x117 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0x118 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0x119 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0x11a 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0x11b 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0x76 32 tc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None

96 GLXFBConfigs:
   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
----------------------------------------------------------------------
0x77  0 tc  0 16  0 r  .  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0x78  0 tc  0 16  0 r  .  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0x79  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0x7a  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0x7b  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0x7c  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0x7d  0 tc  0 16  0 r  .  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0x7e  0 tc  0 16  0 r  .  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0x7f  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0x80  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0x81  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0x82  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0x83  0 tc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0x84  0 tc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0x85  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0x86  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0x87  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0x88  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0x89  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x8a  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x8b  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x8c  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x8d  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x8e  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x8f  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x90  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x91  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x92  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x93  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x94  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x95  0 tc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x96  0 tc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x97  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x98  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x99  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x9a  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x9b  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0x9c  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0x9d  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0x9e  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0x9f  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xa0  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xa1  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xa2  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xa3  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xa4  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xa5  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xa6  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xa7  0 dc  0 16  0 r  .  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0xa8  0 dc  0 16  0 r  .  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0xa9  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0xaa  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0xab  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0xac  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0xad  0 dc  0 16  0 r  .  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0xae  0 dc  0 16  0 r  .  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0xaf  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0xb0  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0xb1  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0xb2  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0xb3  0 dc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xb4  0 dc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xb5  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xb6  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xb7  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xb8  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xb9  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xba  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xbb  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xbc  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xbd  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xbe  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xbf  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xc0  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xc1  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xc2  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xc3  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xc4  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xc5  0 dc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xc6  0 dc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xc7  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xc8  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xc9  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xca  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xcb  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xcc  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xcd  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xce  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xcf  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xd0  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xd1  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xd2  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xd3  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xd4  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xd5  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xd6  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
Comment 7 martin 2009-10-25 08:52:16 UTC 
Created attachment 30671 [details]
glxinfo.txt

I tried it again now with version "7.6.0-1ubuntu4" of mesa and libosmesa. I also tried grabbing a fresh mozilla trunk build (25th oct) but I still could not get it to work on this intel G45 machine.

FWIW, GLX_SGIX_pbuffer is listed in glxinfo under "client extensions" but not under "server extensions". I've attached my glxinfo output for reference.
Comment 8 Thomas Jones 2010-02-15 11:23:06 UTC 
The issue literally seems to be that asking for a pbuffer means you get no fbconfigs at all... essentialy pbuffers just don't work.
Comment 9 Kristian Høgsberg 2010-04-15 08:49:58 UTC 
pbuffers are now supported in xserver master, and will be in 1.9.  To get webgl running on intel, a patch for mozilla is needed:

  https://bugzilla.mozilla.org/show_bug.cgi?id=558867

but according to vlad, he may just switch to FBOs instead.  Either way, this is no longer a mesa bug, and I closing it.

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