[Paraview] Paraview v5.0.0-RC1 with OpenGL2 backend not running using OSMESA v10.5.5

[Andy Smith]

Utkarsh,

Are there any updates to the Surface LIC issues with ParaView 5.0.x /
OpenGL2?

Is there a Bug that I should be following for this issue?

My group uses Surface LIC a fair amount and we're encouraged by the
performance increase of 5.0 over 4.4 so we'd really like to make the
transition.

Thank you,
Andy

On Thu, Dec 17, 2015 at 1:05 PM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> Frank,
>
> First of all, thanks for all your exhausting testing, it's greatly
> appreciated!
>
> * OSMesa and MESA_GL_VERSION_OVERRIDE
>
> Communicating with the Mesa team, we learnt that
> MESA_GL_VERSION_OVERRIDE is a bad idea since it doesnt' really create
> the specified OpenGL context. Thus if anything tries to use features
> from the specific OpenGL version, the rendering would crash and burn.
> Working with Brian Paul from the Mesa team, Ken recently pushed a fix
> to VTK (after the RC2) that uses new OSMesa API to create the correct
> OpenGL context. This new OSMesa API will appear in Mesa 11.2, however.
> Earlier version can be patched using the "alpha" patch that Brian
> provided us (attached).
>
> * Classic v/s llvm
>
> Your observation is indeed correct. llvmpipe is the way to go for
> software rendering. On my builds, classic mesa was painstakingly slow
> for rendering even small geometries.
>
> * Issues with LIC
>
> Another correct observation. There are a few regressions in the new
> implementation for SurfaceLIC. Realistically, we  may not be able to
> address these before the 5.0 release. If you're using SurfaceLIC
> heavily, I'd suggest building ParaView 5.0 with the older OpenGL
> backend (or sticking with 4.4) for the interim.
>
> * OSMesa + SWR
>
> While currently I am not sure openswr+osmesa builds are possible, I
> wouldn't be surprised if that on the roadmap. I am going to try to
> contact the OpenSWR team to see if they have any thoughts on that.
>
> Utkarsh
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/paraview
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/paraview/attachments/20160308/d418ae94/attachment.html>