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

[Ken Martin]

There is a topic on this in gitlab for the hd 3000. It can be modified trivially to test on the 2000.  I'm away from work but feel free to give it a shot



Sent from my iPhone

> On Mar 4, 2016, at 12:24 PM, Mallikarjun K <mallikarjun49 at gmail.com> wrote:
> 
> 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.png>
>>>> 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
> _______________________________________________
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> 
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