[vtkusers] Error setting 'vertexMC' in shader VAO and EGL_BAD_DISPLAY

[Ken Martin]

The shader code is stored in a string. In vtkOpenGLPolyDataMapper.cxx there
are some commented out lines that I usually uncomment that print the
shaders to cout (or you could vtkErrorMacro) them. You would need to
uncomment those lines in the ReplaceShaderValues code as I mentioned on SO.
Rebuild your VTK and app. Then run it and watch for the output in the
android device monitor.  The lines will look like

  //cout << "VS: " << shaders[vtkShader::Vertex]->GetSource() << endl;
  //cout << "GS: " << shaders[vtkShader::Geometry]->GetSource() << endl;
  //cout << "FS: " << shaders[vtkShader::Fragment]->GetSource() << endl;

Thanks
Ken

On Fri, Nov 20, 2015 at 12:42 PM, Lonni Besançon <lonni.besancon at gmail.com>
wrote:

> Hi Ken,
>
> I still haven't figured this out. Could you give me some more detailed
> explanations?
>
>
>
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-- 
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
518 371 3971

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