Re: [Mesa3d-users] offscreen rendering using Osmesa

[Randy F. <rjf...@ho...>]

Hello,

The most common mistake I have seen in this type of setup
is people forgetting to call glFinish() before accessing
the buffer outside of glReadPixels(). I have seen this
a couple of times.  Otherwise, just make sure the context
is current.  MPI really has little to do with it, assuming
each MPI task has a separate OSMesa context/buffer.  It does
work quite well BTW...

Hope it helps.

"Arun K. Rajendran" wrote:

> Hi all,
>    Am new to this group.
>
>    I am trying to render a sequence of Frames based on a dataset offscreen
> in remote nodes using MPI and then combine them at the end to make a movie
> file. But the offscreen part is not working as the buffer is empty if i
> print it out.
>
>  can someone help me ? am not sure if i am using Mesa libraries and MPI in
> the correct way.
>
> Thanks
> arun
>
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--
rjf.

Randall Frank                           | Email:  rj...@ll...
Lawrence Livermore National Laboratory  | Office: B451 R2039
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