Hi,

I use MATLAB (www.mathworks.com) extensively for my work, and have done
so for many years. The latest version, R14 (or R14 sp1) is causing me
grief when trying to run it under Solaris, but remote display to SGI
machines.

It works happily enough for most things, but refuses to use the OpenGL
hardware for graphics rendering.

>> opengl info
Attempting to load glren.so
Error querying Opengl.
Click href="matlab:helpview(fullfile(docroot,'techdoc','graphi cs_csh','error_pages','opengl_error_unix.html'),'C SHelpWindow')">here
for more help.
Warning: OpenGL appears to be installed incorrectly.
> In opengl at 98
Error querying Opengl.
Click href="matlab:helpview(fullfile(docroot,'techdoc','graphi cs_csh','error_pages','opengl_error_unix.html'),'C SHelpWindow')">here
for more help.
>>

Now I ask it for a few more details:

>> s=opengl('data')
Error querying Opengl.
Click href="matlab:helpview(fullfile(docroot,'techdoc','graphi cs_csh','error_pages','opengl_error_unix.html'),'C SHelpWindow')">here
for more help.

s =

Version: ''
Vendor: ''
Renderer: ''
MaxTextureSize: 0
Visual: [1x59 char]
Software: 0
Extensions: {0x1 cell}

>> s.Visual

ans =

0x37 (TrueColor, depth 24, RGB mask 0x00ff 0xff00 0xff0000)

So it is using TrueColor visual 0x37. /usr/openwin/demo/GL/xglinfo
tells me the following about 0x37:

TrueColor visual: ID = 0x37 (hex) 55 (decimal), screen = 0, gamma = 2.22
DOUBLE buffered MONO RGB visual with (Z Stencil Accum)
GL Sizes: RGBA=(12,12,12,0), Z=24, Stencil=8, Accum=(16,16,16,16)
number of sample buffers=0, samples per pixel =1
Core X: depth=24, colormapSize=256 RGB: masks=(0xff,0xff00,0xff0000)
bits=8

Looks to me like it can do OpenGL. Further, the
/usr/openwin/demo/GL/ogl_install_check reports no troubles and works
fine.

And, previous versions of MATLAB had no trouble rendering with OpenGL
from Solaris to display under IRIX.

Now I have opened bug reports with technical support at The MAthWorks,
but have had very little help. The only suggestion they have is to use
Mesa to do software OpenGL rendering.

I would very much like to hear from others who are using MATLAB under
Solaris (5.9), especially if you are attempting to use remote display.
Which platform combinations does this work on, and which platforms does
it not work on? I have heard of people not getting this to work when
remote displaying to SGI and to Linux machines. What about remote
display to Solaris machines?

I really believe there is a problem with the way in which MATLAB R14 is
querying the OpenGL hardware, but it is difficult to pin it down without
more information.

Any help would be much appreciated.

By the way, I have asked about this over on comp.soft-sys.matlab, but
learned nothing new. I thought perhaps I should attempt to tackle it
from the Solaris side rather than the MATLAB side.

Regards,

Tristram
--
Dr Tristram J. Scott
Energy Consultant