[vtkusers] Cross platform rendering tests

[Ken Martin]

VTK uses OpenGL and Mesa is an OpenGL implementation. Building VTK is
OpenGL agnostic and it can switch between mesa and native drivers by
changing library paths, moving dlls, etc.

This page has information on building mesa for various use cases although
generally you can find prebuilt packages/binaries on the web.

https://blog.kitware.com/messing-with-mesa-for-paraview-5-0vtk-7-0/

Hope that helps
Ken


On Tue, Jun 12, 2018 at 12:11 PM, Slaughter, Andrew E <
andrew.slaughter at inl.gov> wrote:

> Thanks for the testing information, you mention that "We test nightly on
> OSX, Window, and Linux with both Mesa and native drivers from Intel,
> Nvidia, and AMD". I am interested in setting up VTK to use Mesa, are the
> instructions for building VTK to use Mesa?
>
> On Tue, Jun 12, 2018 at 7:43 AM, Ken Martin <ken.martin at kitware.com>
> wrote:
>
>> To drive the testing take a look at testing with ctest
>>
>> To do image comparisons look at vtkRegressionTestImage.h and vtkTesting.h
>> We typically invoke testing as
>>
>>   int retVal = vtkRegressionTestImage( renWin );
>>
>> The typical approach uses argc and argv to extract the location of a
>> valid image file to use as a comparison. Those two headers have some
>> example code in them. We test nightly on OSX, Window, and Linux with both
>> Mesa and native drivers from Intel, Nvidia, and AMD.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Tue, Jun 12, 2018 at 9:28 AM, Slaughter, Andrew E <
>> andrew.slaughter at inl.gov> wrote:
>>
>>> I am working on a VTK based GUI and would like to test the rendered
>>> results across platforms (Linux and MacOS). Based on various sources of
>>> documentation, most of which seem to be quite old (
>>> https://www.vtk.org/Wiki/VTK/OpenGL
>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.vtk.org_Wiki_VTK_OpenGL&d=DwMFaQ&c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00&r=h7heP8xwI1i_HikChvhFbEBurKirgfOCdwgBxB9lM8c&m=ypxkVNBM_RLHR49knStOGS6wjz0LwknTxj1AkqJE2kM&s=J3G3b6Vf-0xU11ia1dCy7LumE6BeiIzFD6sPThphqCQ&e=>),
>>> this should be possible with Mesa and software rendering.
>>>
>>> Could someone please point me to an example and/or current documentation
>>> for doing this sort of work.
>>>
>>> Thanks,
>>> Andrew
>>>
>>> _______________________________________________
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>>>
>>
>>
>> --
>> Ken Martin PhD
>> Distinguished Engineer
>> Kitware Inc.
>> 101 East Weaver Street
>> <https://maps.google.com/?q=101+East+Weaver+Street+Carrboro,+North+Carolina+%0D%0A27510+USA&entry=gmail&source=g>
>> Carrboro, North Carolina
>> <https://maps.google.com/?q=101+East+Weaver+Street+Carrboro,+North+Carolina+%0D%0A27510+USA&entry=gmail&source=g>
>> 27510 USA
>>
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>
>


-- 
Ken Martin PhD
Distinguished Engineer
Kitware Inc.
101 East Weaver Street
Carrboro, North Carolina
27510 USA

This communication, including all attachments, contains confidential and
legally privileged information, and it is intended only for the use of the
addressee.  Access to this email by anyone else is unauthorized. If you are
not the intended recipient, any disclosure, copying, distribution or any
action taken in reliance on it is prohibited and may be unlawful. If you
received this communication in error please notify us immediately and
destroy the original message.  Thank you.
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