[vtkusers] Offscreen GPU Volume Rendering Mac OS X generates black images

[Aashish Chaudhary]

This is good to know. Do you get any errors on the console? A standalone
example  will be nice.

- Aashish

On Thu, Sep 25, 2014 at 8:32 AM, Chris Hafey <chafey at gmail.com> wrote:

> I am enabling off screen rendering by calling SetOffScreenRendering(1) on
> the vtkRenderWindow.  Should I be using osmesa?  I can create a standalone
> example to reproduce if needed.
>
> Chris
>
> On Thu, Sep 25, 2014 at 7:21 AM, Aashish Chaudhary <
> aashish.chaudhary at kitware.com> wrote:
>
>> No problem. How did you enable the offscreen?  Can you post your code
>> somewhere?
>>
>> Thanks,
>> Aashish
>>
>> On Thu, Sep 25, 2014 at 8:05 AM, Chris Hafey <chafey at gmail.com> wrote:
>>
>>> Hi Aashish,
>>>   Forgive my ignorance but I don't know much about osmesa or whether I
>>> am using it.  I am using VTK as built by homebrew and don't see any options
>>> related to osmesa.  I have not installed osmesa on the machine.  No errors
>>> or warnings are issued on the console.
>>>
>>> Chris
>>>
>>> On Thu, Sep 25, 2014 at 6:46 AM, Aashish Chaudhary <
>>> aashish.chaudhary at kitware.com> wrote:
>>>
>>>> Hi Chris,
>>>>
>>>> Are you using osmesa for the offscreen rendering? Are you getting any
>>>> error on the console?
>>>>
>>>> Thanks
>>>>
>>>>
>>>> On Thu, Sep 25, 2014 at 7:32 AM, Chris Hafey <chafey at gmail.com> wrote:
>>>>
>>>>> VTK 6.1.0
>>>>> Mac OS X Mavericks 10.9.5
>>>>> Macbook Pro 2012 Retina with nVidia GeForce GT 650M 1024 MB
>>>>>
>>>>> My program uses VTK to do off screen volume rendering of medical
>>>>> images.  I suspect this is a bug in VTK and not my software because:
>>>>> 1) GPURenderMode works fine on Windows (both in a VM running on same
>>>>> Mac and on two other Windows 7 boxes with an nVidia GPUs)
>>>>> 2) RayCastRenderMode works fine on Mac OS X
>>>>> 3) TextureRenderMode works fine on Mac OS X
>>>>>
>>>>> I tried searching the mailing list and google and couldn't find
>>>>> anything.  The rendering code is about as basic as it can be - it simply
>>>>> sets the color, opacity, clip planes and matrix.  Any ideas on what I might
>>>>> be doing wrong or how I can debug?
>>>>>
>>>>> Thanks
>>>>>
>>>>> Chris Hafey
>>>>>
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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>*
>>>>
>>>
>>>
>>
>>
>> --
>>
>>
>>
>> *| Aashish Chaudhary | Technical Leader         | Kitware Inc.
>> *
>> *| http://www.kitware.com/company/team/chaudhary.html
>> <http://www.kitware.com/company/team/chaudhary.html>*
>>
>
>


-- 



*| 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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