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Hi Ruq,<br>
<br>
I'm not sure why it works in 4.2 and not 4.3. I assume someone else
reading this who knows about the recent changes could comment.<br>
<br>
The error message shows some missing open gl extensions. Are you
sure you have the latest driver installed? GL_ARB_multitexture is
not typically an issue, unless you are using the default MS driver.
Also are you sure the error messages are the same on both systems?
If not, it would be helpful to see all the messages on both systems.<br>
<br>
Note: the AMD drivers have a bug that prevents projected tetrahedra
from working. This should be disabled on the system with the AMD
card.<br>
<br>
In general when you have issues with one volume rendering method you
could work around it by using a different one. In the "properties
panel" under the "display" group there are some controls relating to
the volume renderer. One labeled "select mapper" lets you chose
different algorithms. For instance try to change it to "Bunyk Ray
Cast". In general the "ray cast" options are slower but more
dependable.<br>
<br>
Burlen<br>
<br>
<div class="moz-cite-prefix">On 02/24/2015 11:18 PM, Xu, Ruqing
wrote:<br>
</div>
<blockquote
cite="mid:CAKEC7WZTbfx=G_hTc=xM32dxqcD3J2HSeMAQxwZzPtk0Rn4Cmg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>Hello,<br>
<br>
I've installed PV 4.3 on a few PCs, all of them running
Win 7 64-bit. What I've found is that volume rendering,
curiously, works on some of them and fails on others. The
error messages I got look like this:<br>
========================================= <br>
<span
style="font-family:'Courier';font-size:8.25pt;color:rgb(128,0,0)">ERROR:
In
C:\DBD\pvs-x64\paraview\src\paraview\VTK\Rendering\VolumeOpenGL\vtkOpenGLProjectedTetrahedraMapper.cxx,
line 188</span>
<p style="margin:0px;text-indent:0px"><span
style="font-family:'Courier';font-size:8.25pt;color:rgb(128,0,0)">vtkOpenGLProjectedTetrahedraMapper
(0000000013AB80B0): The required extensions are not
supported.</span></p>
<p
style="margin:0px;text-indent:0px;font-family:'Courier';font-size:8.25pt;color:rgb(128,0,0)"><br>
</p>
<p
style="margin:0px;text-indent:0px;font-family:'Courier';font-size:8.25pt;color:rgb(128,0,0)"><br>
</p>
<p style="margin:0px;text-indent:0px"><span
style="font-family:'Courier';font-size:8.25pt;color:rgb(0,0,0)">Warning:
In
C:\DBD\pvs-x64\paraview\src\paraview\VTK\Rendering\OpenGL\vtkOpenGLExtensionManager.cxx,
line 781</span></p>
<p style="margin:0px;text-indent:0px"><span
style="font-family:'Courier';font-size:8.25pt;color:rgb(0,0,0)">vtkOpenGLExtensionManager
(0000000013567D60): Attempting to load
GL_ARB_multitexture, which is not supported.</span></p>
<p
style="margin:0px;text-indent:0px;font-family:'Courier';font-size:8.25pt;color:rgb(0,0,0)"><br>
</p>
<p
style="margin:0px;text-indent:0px;font-family:'Courier';font-size:8.25pt;color:rgb(0,0,0)"><br>
</p>
<p style="margin:0px;text-indent:0px"><span
style="font-family:'Courier';font-size:8.25pt;color:rgb(128,0,0)">ERROR:
In
C:\DBD\pvs-x64\paraview\src\paraview\VTK\Rendering\OpenGL\vtkOpenGLExtensionManager.cxx,
line 787</span></p>
<p style="margin:0px;text-indent:0px"><span
style="font-family:'Courier';font-size:8.25pt;color:rgb(128,0,0)">vtkOpenGLExtensionManager
(0000000013567D60): Extension GL_ARB_multitexture
could not be loaded.</span></p>
<p
style="margin:0px;text-indent:0px;font-family:'Courier';font-size:8.25pt;color:rgb(128,0,0)">===============================================<br>
</p>
<br>
</div>
This seems to only happen to the relatively old PCs (~ 4 or
5 years old). For example one of them has graphics card of
ATI Radeon HD 3450 (Microsoft Corporation WDDM 1.1), driver
version 7.14.10.0018; another laptop has Intel HD graphics,
driver version 8.15.10.2559. - I'm wondering if these are
considered insufficient for volume rendering to work with PV
4.3.<br>
<br>
</div>
<div>More curiously, volume rendering seems to run OK with PV
4.2 on these machines.<br>
<br>
</div>
<div>Thanks,<br>
<br>
</div>
<div>-Ruq<br>
</div>
</div>
</div>
<br>
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