[vtk-developers] For those using OpenGL2 in the VTK build.

[Ken Martin]

Morning Andrew,



Yes, for laptops with multiple graphics options you probably want to go
with the dedicated graphics chip. Having said that, recent Intel chips
should work with VTK. This page provides more detail if you expand the 4th/3
rd generation sections, etc.



http://www.intel.com/support/graphics/sb/CS-033757.htm



Intel 2500, 4000, 4200, 4400, 4600, 5000, 5100, 5200 and later should all
support OpenGL 3.2.  Intel 3000/2000/HD Graphics support 2.1 but not 3.2,
but I’m not sure if they provide the required extensions.



Thanks

Ken



Ken Martin PhD

Chairman & CFO

Kitware Inc.

28 Corporate Drive

Clifton Park NY 12065

ken.martin at kitware.com

518 881-4901 (w)

518 371-4573 (f)



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*From:* vtk-developers [mailto:vtk-developers-bounces at vtk.org] *On Behalf
Of *Andrew Maclean
*Sent:* Tuesday, June 23, 2015 3:00 AM
*To:* VTK Developers; vtk
*Subject:* [vtk-developers] For those using OpenGL2 in the VTK build.



Hi All



On my laptop which has an Intel and NVidiia card, I just discovered that my
VTK programs were crashing with this message:



"Warning: In \VTK\Rendering\OpenGL2\vtkOpenGLRenderWindow.cxx, line 426

vtkWin32OpenGLRenderWindow (0000000604268430): VTK is designed to work with
OpenGL version 3.2 but it appears it has been given a context that does not
support 3.2. VTK will run in a compatibility mode designed to work with
OpenGL 2.1 but some features may not work.



ERROR: In\ VTK\Rendering\OpenGL2\vtkShaderProgram.cxx, line 366

vtkShaderProgram (0000000607E3F060): 1:



...

ERROR: In \VTK\Rendering\OpenGL2\vtkShaderProgram.cxx, line 367

vtkShaderProgram (0000000607E3F060): ERROR: 0:20: '' :  extension
'GL_EXT_gpu_shader4' is not supported

"



To get rid of this error you must set the NVidia graphics processor as
default.



To do this:

Go to the NVIDIA Control Panel (right-click on the desktop), then:
3D Settings-> Manage 3D settings
The Tab "Preferred graphics processor " , select
High performance NVidia processor



Regards

   Andrew

-- 

___________________________________________
Andrew J. P. Maclean

___________________________________________
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