[vtkusers] Sharing vtkRenderer?

[rakesh patil]

Yes, so I have a common vtkpolydata shared among the four windows. Also
this data will reside in all the mappers/actors right. .? Won't it be a
duplicate. ?

Thanks

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

> You'll also need different mappers for the different windows.
>
> You can share the data set among the different windows - no need to
> duplicate. This is because the data model classes do not have any OpenGL
> context-dependent state.
>
> - Cory
>
> On Sun, Dec 6, 2015 at 11:52 PM, rakesh patil <prakeshofficial at gmail.com
> <javascript:_e(%7B%7D,'cvml','prakeshofficial at gmail.com');>> wrote:
>
>> 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
>> <javascript:_e(%7B%7D,'cvml','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
>>> > 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>
>>>> 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.
>>>
>>
>
>
> --
> Cory Quammen
> R&D Engineer
> Kitware, Inc.
>
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