[vtkusers] vtkShaderProgram error :extension 'GL_EXT_gpu_Shader4' not supported VTK 7.0.0

[Mallikarjun K]

Hi Aashish,
Its Intel HD Graphics 2000, yes its bit older version but it does support
opengl2 .when I see graphics properties of my machine with some third party
opengl extension viewer it says that current opengl version is 3.1and it
supports gl_ext_gpu_shader4.

Thanks.

With Kind Regards,
Mallikarjun
On Mar 4, 2016 10:36 PM, "Aashish Chaudhary" <aashish.chaudhary at kitware.com>
wrote:

> The error is not related to volume rendering rathe the polygon rendering
> which uses this extension. It looks like you using a much older version of
> Intel graphics chip? Is that correct?
>
> Thanks,
>
> On Fri, Mar 4, 2016 at 12:04 PM, Mallikarjun K <mallikarjun49 at gmail.com>
> wrote:
>
>> Hi Chiang,
>> Thanks for the response.
>> With the same integrated gpu, vtk 6.1 gpuMapper doesn't complain like
>> this.As vtk 7 is by default using opengl2 backend,I think I have missed
>> something here.I updated my graphics drivers too.Still no luck..
>>
>> With Kind Regards,
>> Mallikarjun
>> On Mar 4, 2016 9:48 PM, "WangQ" <wangq1979 at hotmail.com> wrote:
>>
>>> Hello Mallikarjun,
>>>
>>> Not sure if it has any connection with vtk version, but I encountered
>>> the same issue when an integrated gpu was used. The issue has gone now
>>> using a dedicated gpu.
>>>
>>> cheers,
>>>
>>> Chiang
>>>
>>> ------------------------------
>>> Date: Fri, 4 Mar 2016 17:53:03 +0530
>>> From: mallikarjun49 at gmail.com
>>> To: vtkusers at vtk.org
>>> Subject: [vtkusers] vtkShaderProgram error :extension
>>> 'GL_EXT_gpu_Shader4' not supported VTK 7.0.0
>>>
>>>
>>> Hello all,
>>> I am trying to migrate my volume rendering application from vtk 6.1 to
>>> vtk 7.0, but I am getting an error like this..
>>>
>>> [image: Inline image 1]
>>> I am using vtkGPUVolumeRaycastMapper.
>>>
>>> My GPU details are:
>>>
>>> Renderer: Intel(R) HD Graphics 2000
>>> Memory: 2108 MB
>>> Version: 3.1.0 - Build 9.17.10.4229
>>>
>>> Any suggestions on this?
>>> Thanks in advance.
>>>
>>> --
>>> *With Kind Regards:*
>>> Mallikarjun
>>>
>>>
>>>
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>
>
> --
>
>
>
> *| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
> *| http://www.kitware.com/company/team/chaudhary.html
> <http://www.kitware.com/company/team/chaudhary.html>*
>
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