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IRIS
EXPLORERTM
Frequently Asked Technical Questions |
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| HP
Specific Questions |
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The IsosurfaceLat module generates geometry, which is lighted on only one
side or appears completely dark. [answer here]
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IRIS Explorer fails to run and generates the error message:
"sh:/lib/cpp: not found". [answer here]
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Launching any module causes IRIS Explorer to crash after issuing the following
error message: "Error: widget class controlpanel has invalid compositeclassextension
record User interface exited code 1". [answer here]
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Does IRIS Explorer take advantage of the hardware acceleration on my OpenGL
graphics card (note: this applies to HP systems ONLY). [answer
here]
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| Question 1 |
The IsosurfaceLat module generates geometry, which is lighted on only
one side or appears completely dark. |
| Answer 1 |
This problem will occur on machines that do not have two-sided lighting.
The side which is lighted can be flipped by setting IsosurfaceLat's "Flip
Normal?" option to "Yes". |
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| Question 2 |
IRIS Explorer fails to run and generates the error message:
sh:/lib/cpp: not found.
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| Answer 2 |
In older releases,
when IRIS Explorer is started it uses the C pre-processor to process
the "Explorer.config" file in the Explorer main-level directory. The most
likely explanation is that the C pre-processor is in a different location.
The simplest solution is to remove the first line from the "Explorer.config"
file (#!CPP)
and replace any occurrences of "CXGLTYPE" with "opengl", etc. |
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| Question 3 |
Launching any module causes IRIS Explorer to crash after issuing the
following error message:
Error: widget class controlpanel has invalid compositeclassextension record
User interface exited code 1
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| Answer 3 |
This problem occurs when IRIS Explorer attempts to use an incompatible
(i.e. different to the one that Explorer was built with) Motif shareable
library. First check what versions of Motif libraries you have got installed
- they are probably installed in /usr/lib as symbolic links to like this:
% ls -ls /usr/lib/libXm*
2 lrwxr-xr-x 1 root sys 25 Oct 25 1997 /usr/lib/libXm.1 --> /usr/lib/Motif1.2/libXm.1
2 lrwxr-xr-x 1 root sys 28 Oct 25 1997 /usr/lib/libXm.2 --> /usr/lib/Motif1.2_R6/libXm.2
2 lrwxr-xr-x 1 root sys 16 Nov 13 1997 /usr/lib/libXm.sl --> /usr/lib/libXm.2
Use this listing to find the file pointed to by "/usr/lib/libXm.2" (in
this case "/usr/lib/Motif1.2_R6/libXm.2") and do a listing of this file,
e.g.:
% cd /usr/lib/Motif1.2_R6
% ls -al libXm.2
-r-xr-xr-x 1 bin bin 2289664
May 30 1996 libXm.2*
The file IRIS Explorer requires MUST be the same as this. Beware, there
are two versions named "libXm.2", so check that the size of the file to
be sure. It is likely that you will find that this is the wrong version
(size 2314240 bytes).
To fix the problem, you can make use of the fact that Explorer modules
search the /usr/explorer/lib directory for shareable libraries before any
other location. If you have the correct version of the file, copy it into
the "/usr/explorer/lib" directory, otherwise contact NAG to obtain the
file via FTP. Alternatively, put a link in the same ("/usr/explorer/lib")
directory, to ensure that IRIS Explorer always looks at the correct file:
% cd /usr/explorer/lib
% ln -s /usr/lib/Motif1.2/libXm.1
./libXm.sl
Note that this change will only affect IRIS Explorer. By putting the file
here, we ensure that the correct Motif library is used, without moving
the default location of the Motif libraries (and potentially damaging any
other installed software that uses Motif).
Check that IRIS Explorer modules can now be launched properly. If you
still have problems, please contact your
local IRIS Explorer Center. |
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| Question 4 |
Does IRIS Explorer take advantage of the hardware acceleration on my
OpenGL graphics card. (note: this applies to HP systems ONLY) |
| Answer 4 |
IRIS Explorer 3.5 for HP systems has been built using the implementation
of OpenGL from Template Graphics Systems (TGS). [Later releases use HP's
implementation of OpenGL, so the rest of this answer is irrelevant for
IRIS Explorer Release 4.0 and later.] This works on all HP graphics
boards, but does not take advantage of any hardware acceleration offered
by them. HP have since released their own implementation of OpenGL, which
uses hardware acceleration on some of their boards (currently HP VISUALIZE-FX2,
HP VISUALIZE-FX4 and HP VISUALIZE-FX6) and software-only rendering on other
X devices. More information on HP OpenGL is available on the HP web site
at:
http://www.software.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B6196AA
To discover if your system has HP OpenGL installed, type:
% /usr/sbin/swlist -l
product | grep GL
This will give you a list of the products on the system containing the
letters "GL" in their description. You will see lines similar to the following
if HP OpenGL has been installed on your system:
OpenGLDevKit B.10.20 HP-UX
OpenGL Developer's Kit
B6196AA B.10.20 HP-UX 700
OpenGL Run Time Environment
If you see these, you can download a set of additional modules (ColorEditor,
Render, RenderRemote, TransformGen, ViewGeom, VolumeRender) that use
OpenGL directly. Contact your NAG representative for more information.
More information on installing HP OpenGL is available at:
http://www.software.hp.com/portal/swdepot/displayInstallInfo.do?productNumber=B6196AA
The HP OpenGL can also be used when building new OpenGL-based modules;
please ask your
nearest IRIS Explorer Center
for help with this, or if you have any questions about
this distribution. |