If you see the VGL logo, that means that hardware acceleration is
working.  The logo is drawn by VirtualGL after the OpenGL-rendered
pixels are read back from the GPU and before they are drawn into the X
window, so it is guaranteed that, if you see the logo, the underlying
pixels were rendered by the GPU.

This has been a long-standing problem, and I'm not aware that anyone has
discovered a workaround.  I'll repeat what I said in the message on the
old SF Mailing list:  if ANSYS is claiming that they "support" VirtualGL
as a platform, then it's their responsibility to fix this or suggest how
I can work around it in VGL.  Given that other ANSYS applications work
properly, I strongly suspect that this isn't my problem.  At this point,
VirtualGL is 14 years old, and I have bent over backwards to accommodate
enterprise ISVs and their wonky software, but it would be nice if they
made even one step in my direction for a change.  It would be even nicer
if companies like ANSYS stepped forward to fund my labor in supporting
their applications, given that they're claiming that they "support"
VirtualGL.  Otherwise, I'm flat broke from giving away too much of my
work to the open source community for free.  Can't do it anymore.

DRC

On 10/28/18 12:14 PM, Joshua wrote:
> If the VGL_LOGO appears using TigerVNC, does that mean hardware
> acceleration is working, or would the VGL_LOGO appear even if it was
> running using the GLX extensions, unaccelerated?
> 
> 
> On Sunday, October 28, 2018 at 1:05:51 PM UTC-4, Joshua wrote:
> 
>     Hello,
> 
>     I am having the same issues as were reported here for Fluent 16.2
> 
>     https://sourceforge.net/p/virtualgl/mailman/message/34859603/
>     <https://sourceforge.net/p/virtualgl/mailman/message/34859603/>
> 
>     I can launch the standalone version of Fluent 19.2 and get the
>     VGL_LOGO to appear with VGL_LOGO, but when launching from within
>     workbench, I am not able to get it to work.  In general you get
>     "Warning: Cannot find accelerated drivers.  Performance might be
>     severely impacted."  warning, but then you can set "setenv
>     FLUENT_WB_OPTIONAL_ARGS "-driver opengl".  However, this appears to
>     not use hardware rendering and the VGL_LOGO does not appear.
> 
>     All the other applications (Mechanical, Meshing, Design Modeler)
>     launch from workbench with the VGL_LOGO, and VGL_VERBOSE shows
>     VirtualGL being called, so these seem to be working correctly. 
> 
>     I am using TigerVNC + VirtualGL.
> 
>     All the glxspheres64 and glxgears, etc. tests work fine and the
>     VGL_LOGO appear in those and VGL_VERBOSE shows that VirtualGL is
>     being called.
> 
>     Has anyone had any luck with Fluent from Workbench since v16.2?
> 
>     Thanks.
> 
>     Josh 
> 
> 
>       
> 
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