[vtkusers] Sharing vtkRenderer?

[rakesh patil]

So you mean to say that, in an application if I have 4 windows, each window
will have its own vtkRenderWindow, and each vtkRenderWindow will have its
own renderer. Each renderer will have its own set of actors. This means
there would exist duplicate dataset right. ? Maybe this is next issue, how
to handle single dataset among multiple windows. Does this query need a new
thread.?

Thanks


On Monday, December 7, 2015, Cory Quammen <cory.quammen at kitware.com> wrote:

> Actors store some OpenGL state in the mappers they use. While it appears
> to be possible to share some kinds of OpenGL state among the different
> OpenGL contexts in the render windows, VTK is not designed with this in
> mind. Hence, it is safest to have different actors for different renderers.
>
> HTH,
> Cory
>
> On Sun, Dec 6, 2015 at 10:50 PM, rakesh patil <prakeshofficial at gmail.com
> <javascript:_e(%7B%7D,'cvml','prakeshofficial at gmail.com');>> wrote:
>
>> Hi,
>>
>> Thanks for your reply. It's just a question. Can't I share actors created
>> by smart pointer across multiple renderers. ?
>>
>>
>> On Sunday, December 6, 2015, Cory Quammen <cory.quammen at kitware.com
>> <javascript:_e(%7B%7D,'cvml','cory.quammen at kitware.com');>> wrote:
>>
>>> Each vtkRenderWindow should have its own vtkRenderer. Also, you cannot
>>> reliably share actors across different vtkRenderers, so each vtkRenderer
>>> should have its own set of actors.
>>>
>>> - Cory
>>>
>>> On Sat, Dec 5, 2015 at 9:32 AM, rakesh patil <prakeshofficial at gmail.com>
>>> wrote:
>>>
>>>> Hello users,
>>>>
>>>> Is it possible to share a common vtkRenderer object among multiple
>>>> vtkRenderWindows? Or is it that each window should have its own renderer?
>>>> What I need to do is show same actor in different windows but with
>>>> different projections and viewports. Will sharing a common renderer work in
>>>> this case?
>>>>
>>>> Thanks in advance
>>>>
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>>>
>>>
>>> --
>>> Cory Quammen
>>> R&D Engineer
>>> Kitware, Inc.
>>>
>>
>
>
> --
> Cory Quammen
> R&D Engineer
> Kitware, Inc.
>
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