[vtkusers] Using VTK 7.1 with GL 3.0 version crashing the application

[Ken Martin]

VTK needs OpenGL 3.2 so if your VM has an option for that, that would be
the best route. If not you can use Mesa to provide an OpenGL 3.2
implementation for your VM.  While parts of VTK may work with OpenGL 3.0
others may crash because they rely on 3.2 features.

On Sun, Sep 17, 2017 at 10:49 PM, Chandrasekhar B <
chandrasekhar at waveaxis.com> wrote:

> I have a crash when importing stl file in the virtual machine.
> I am using VTK 7.1 version. The crash is because of the GLSL version
> supported by the VM.
> The GL version supported by VM is 3.0.
>
> I have fixed this issue in the following function by adding the following
> code.
>
> unsigned int vtkOpenGLShaderCache::ReplaceShaderValues(
>   std::string &VSSource,
>   std::string &FSSource,
>   std::string &GSSource)
> {
>
> if (glMajorVersion >= 3)
>     {
>     version = "#version 150\n";
> if (glMajorVersion == 3 && glMinorVersion == 0)
> {
> version = "#version 130\n";
> }
> }
>
> Just wanted to check, is this right fix?
> How do I support GL 3.0 using VTK 7.1?
> or do I need to upgrade to later version of VTK?
> Currently, all the VMs we have use GL 1.3.
>
> Regards
> Shekar
>
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-- 
Ken Martin PhD
Distinguished Engineer
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065

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