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IRIS
EXPLORERTM
Frequently Asked Technical Questions |
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| IBM
(AIX) Specific Questions |
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Starting up one of the Render, DisplayImg or TransformGen
modules generates the message: "X
Error of failed request: BadColor (invalid Colormap parameter)". [answer
here]
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The little module control panels in the map editor window are missing the
minimize/maximize buttons that should be at the top right of each panel.
[answer
here]
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The colours on my windows change as I move from window to window. [answer
here]
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Using the light editors causes the X server to crash. [answer
here]
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Running the Render module causes the following message:
"Render: Inventor error in SoXtGLWidget::buildOverlayGLXWidget(): could
not create overlay visual". [answer here]
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| Question 1 |
Starting up one of the Render, DisplayImg or TransformGen
modules generates the message:
"X Error of failed request:
BadColor (invalid Colormap parameter)"
|
| Answer 1 |
The DISPLAY environment variable is either not set, or is set to":0.0"
causing the system to use "direct rendering". To avoid this, modify the
DISPLAY variable to contain your hostname, e.g. on a system called "dennis":
C shell users
% setenv DISPLAY dennis:0.0
Bash/Korn shell users:
% DISPLAY=dennis:0.0
% export DISPLAY
N.B. This may cause a slight decrease in performance |
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| Question 2 |
The little module control panels in the map editor window are missing
the minimize/maximize buttons that should be at the top right of each panel. |
| Answer 2 |
If you look closely, they're not actually missing; they're just extremely
small. This is because your Motif runtime library is version 1.1.4, not
1.2 [or later]
that Explorer requires. As a temporary measure (while you're upgrading
your Motif library) you can get the buttons more visible by editing
"$EXPLORERHOME/lib/X11/app-defaults/Explorer"
and changing the lines:
map Editor*miniCpBase*miniCpMgrForm*miniCpMaxBtn*shadowThickness:
0
map Editor*miniCpBase*miniCpMgrForm*miniCpMicroBtn*shadowThickness:
0
If you increase these values to 2, you can see where the button widgets
are. You could also experiment with changing the widget sizes, which are
by default 16x16 pixels. |
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| Question 3 |
The colours on my windows change as I move from window to window. |
| Answer 3 |
Some graphics adaptors support only 8 bits per pixel, i.e. only 256
colors on screen at a time. This sometimes forces the window manager to
switch colormaps as the user moves from window to window. To ensure this
happens correctly when using IRIS Explorer the environment variable "CXCOLORMAP"
should be set before running IRIS Explorer:
C shell users
% setenv CXCOLORMAP
Bash/Korn shell users:
% CXCOLORMAP=
% export CXCOLORMAP
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| Question 4 |
When I use the light editors the X server to crashes. |
| Answer 4 |
This is caused by a problem either in OpenInventor, (the library upon
which the IRIS Explorer graphics are built) or the IBM OpenGL implementation.
It will be fixed in a future version of IRIS Explorer. Until this release,
use of the light editors should be avoided. |
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| Question 5 |
Running the Render module causes the following message:
Render: Inventor error
in SoXtGLWidget::buildOverlayGLXWidget(): could not create overlay visual
|
| Answer 5 |
This is just a warning and can be ignored. |