Re: Chimera graphics card requirements

10 Jun 2003

      Hi Jim,

  I think Chimera will start without an OpenGL stencil buffer.
But the outline highlighting of selected atoms/bonds/... will not
work.  Fill mode highlighting settable with Favorites/Preferences/General/
Selection highlight method will work.

  With a Quadro4 700 XGL on Linux you should definitely have a stencil
buffer available.  Below is the output of "glxinfo -t" on my Linux system
with Quadro4 500 graphics.  It shows half the visuals have 8 bit stencil
buffer.  It shows I am using the Nvidia 4191 driver

	OpenGL version string: 1.4.0 NVIDIA 41.91

Check the OpenGL version string on your machine to make sure you are
using the Nvidia driver and not Mesa (software opengl).

      Tom

$ glxinfo -t
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.3
server glx extensions:
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer
client glx vendor string: NVIDIA Corporation
client glx version string: 1.3
client glx extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info, 
    GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync, 
    GLX_SGIX_swap_group, GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_NV_float_buffer
GLX extensions:
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: Quadro4 500 GoGL/AGP/SSE2
OpenGL version string: 1.4.0 NVIDIA 41.91
OpenGL extensions:
    GL_ARB_imaging, GL_ARB_multitexture, GL_ARB_point_parameters, 
    GL_ARB_texture_compression, GL_ARB_texture_cube_map, 
    GL_ARB_texture_env_add, GL_ARB_texture_env_combine, 
    GL_ARB_texture_env_dot3, GL_ARB_texture_mirrored_repeat, 
    GL_ARB_transpose_matrix, GL_ARB_vertex_program, GL_ARB_window_pos, 
    GL_S3_s3tc, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, 
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_clip_volume_hint, 
    GL_EXT_compiled_vertex_array, GL_EXT_draw_range_elements, 
    GL_EXT_fog_coord, GL_EXT_multi_draw_arrays, GL_EXT_packed_pixels, 
    GL_EXT_paletted_texture, GL_EXT_point_parameters, GL_EXT_rescale_normal, 
    GL_EXT_secondary_color, GL_EXT_separate_specular_color, 
    GL_EXT_shared_texture_palette, GL_EXT_stencil_wrap, 
    GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map, 
    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, 
    GL_EXT_texture_lod_bias, GL_EXT_texture_object, GL_EXT_vertex_array, 
    GL_IBM_texture_mirrored_repeat, GL_KTX_buffer_region, GL_NV_blend_square, 
    GL_NV_fence, GL_NV_fog_distance, GL_NV_light_max_exponent, 
    GL_NV_packed_depth_stencil, GL_NV_pixel_data_range, GL_NV_point_sprite, 
    GL_NV_register_combiners, GL_NV_texgen_reflection, 
    GL_NV_texture_env_combine4, GL_NV_texture_rectangle, 
    GL_NV_vertex_array_range, GL_NV_vertex_array_range2, GL_NV_vertex_program, 
    GL_NV_vertex_program1_1, GL_NVX_ycrcb, GL_SGIS_generate_mipmap, 
    GL_SGIS_multitexture, GL_SGIS_texture_lod
glu version: 1.3
glu extensions:
    GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess

Vis  Vis   Visual Trans  buff lev render DB ste  r   g   b   a  aux dep ste  accum buffers  MS   MS
 ID Depth   Type  parent size el   type     reo sz  sz  sz  sz  buf th  ncl  r   g   b   a  num bufs
----------------------------------------------------------------------------------------------------
0x21 24 TrueColor    0     32  0  rgba   1   0   8   8   8   0   0   24  8  16  16  16  16   0   0
0x22 24 DirectColor  0     32  0  rgba   1   0   8   8   8   0   0   24  8  16  16  16  16   0   0
0x23 24 TrueColor    0     32  0  rgba   1   0   8   8   8   8   0   24  8  16  16  16  16   0   0
0x24 24 TrueColor    0     32  0  rgba   0   0   8   8   8   0   0   24  8  16  16  16  16   0   0
0x25 24 TrueColor    0     32  0  rgba   0   0   8   8   8   8   0   24  8  16  16  16  16   0   0
0x26 24 TrueColor    0     32  0  rgba   1   0   8   8   8   0   0    0  0  16  16  16  16   0   0
0x27 24 TrueColor    0     32  0  rgba   1   0   8   8   8   8   0    0  0  16  16  16  16   0   0
0x28 24 TrueColor    0     32  0  rgba   0   0   8   8   8   0   0    0  0  16  16  16  16   0   0
0x29 24 TrueColor    0     32  0  rgba   0   0   8   8   8   8   0    0  0  16  16  16  16   0   0
0x2a 24 DirectColor  0     32  0  rgba   1   0   8   8   8   8   0   24  8  16  16  16  16   0   0
0x2b 24 DirectColor  0     32  0  rgba   0   0   8   8   8   0   0   24  8  16  16  16  16   0   0
0x2c 24 DirectColor  0     32  0  rgba   0   0   8   8   8   8   0   24  8  16  16  16  16   0   0
0x2d 24 DirectColor  0     32  0  rgba   1   0   8   8   8   0   0    0  0  16  16  16  16   0   0
0x2e 24 DirectColor  0     32  0  rgba   1   0   8   8   8   8   0    0  0  16  16  16  16   0   0
0x2f 24 DirectColor  0     32  0  rgba   0   0   8   8   8   0   0    0  0  16  16  16  16   0   0
0x30 24 DirectColor  0     32  0  rgba   0   0   8   8   8   8   0    0  0  16  16  16  16   0   0
...
From: Jim Procter <procter@zbh.uni-hamburg.de>
Reply-To: procter@zbh.uni-hamburg.de
Organization: Zentrum Bioinformatik Hamburg
To: Thomas Goddard <goddard@cgl.ucsf.edu>
Subject: Chimera graphics card requirements
Date: Tue, 10 Jun 2003 10:53:20 +0200
Hi. I'm sorry to bother you again - particularly with some trivial hardware 
question, but I've been wondering about the minimum specification of OpenGL 
graphics driver needed for Chimera.
We have Quadro4 700 XGL/AGP/SSE2 drivers for our linux-installations, on what 
I would expect to be fairly high-end PCs. There doesn't seem to be any way to 
force these drivers to generate a stencil buffer - is this what other people 
have found ?
Thanks.
Jim

chimera-users＠cgl.ucsf.edu

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