[vtk-developers] osmesa status

[Bill Lorensen]

I think the errors are because the Rendering backend is set to OpenGL2
(which recently became the default). If you set your rendering backend
to OpenG you should be OK.


On Tue, Dec 29, 2015 at 10:34 AM, Geoff Wright <gpwright at gmail.com> wrote:
> Hello,
>
> I'm using VTK in an internal project and wanted to add some extra regression
> tests to support my own use cases.  I setup a new job to build VTK and run
> all existing ctest on my CI server (aws ec2 Ubuntu 14.04, no graphics
> hardware).
>
> I noticed that a substantial portion of the tests are currently failing when
> using os mesa, due to what looks like sub pixel alignment issues.  Is this a
> known problem?  I see that there are a couple of servers on the public VTK
> dashboard configured for OS mesa that are also failing approximately 400
> tests e.g. https://open.cdash.org/buildSummary.php?buildid=4167821
>
> I'm wondering if there is any quick fix to get these working, or is it a
> known issue with osmesa?  Are the baseline images generated using MSAA?  Is
> there an option to change the image comparison to be more generous with
> single pixel misalignment?  Should I give up on testing VTK in a VM and set
> it up on a physical agent?  I would rather avoid this... any advice is much
> appreciated.   I'm using Mesa 11.0.4 which reports OpenGL information as
> follows:
>
> OpenGL vendor string: VMware, Inc.
> OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.6, 256 bits)
> OpenGL core profile version string: 3.2 (Core Profile) Mesa 11.0.4
> OpenGL core profile shading language version string: 1.50
> OpenGL core profile context flags: (none)
> OpenGL core profile profile mask: core profile
> OpenGL core profile extensions:
> OpenGL version string: 3.2 (Core Profile) Mesa 11.0.4
> OpenGL shading language version string: 1.50
> OpenGL context flags: (none)
> OpenGL profile mask: core profile
> OpenGL extensions:
>
> Many thanks,
>
> Geoff
>
>
>
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