[vtkusers] VTk Stereo - Help Rendering Left & Right Eye Seperately

[Sankhesh Jhaveri]

If zSpace creates the OpenGL context, you could also use the
vtkRenderingExternal module (ExternalVTKWidget in particular) which allows
one to use VTK in third party visualization architectures. For an example,
take a look at the VruiVTK examples <https://github.com/VruiVTK> on GitHub
that allow using VTK inside VRUI.
​

On Tue, Jun 6, 2017 at 2:12 PM Aashish Chaudhary <
aashish.chaudhary at kitware.com> wrote:

> If you are using zspace, then you can use Paraview VR plugin and a
> configuration that lets you open two windows (one for left eye and one for
> right). One of my colleague was able to run a setup like this in the past.
> However, then you are using ParaView inside zspace and not using zSpace SDK
> directly.
>
> - Aashish
>
> On Tue, Jun 6, 2017 at 2:03 PM Teek <EZ7543 at wayne.edu> wrote:
>
>> Ahhh I should've been more clear. But I'm using zSpace as my display which
>> handles the stereoscopic rendering fine if I use Crystal Eyes.
>>
>> Would it be possible for me to have 2 renderers on top of each other in
>> one
>> window, and then use the front and back buffers for each renderer?
>>
>> For my use, I can't actually use just the center of the two eyes. I would
>> need to render each eye separately or set the camera for each eye.
>>
>> zSpace has an example of rendering in OpenGL in which they render the
>> scene
>> twice using GL_FRONT_LEFT and GL_BACK_LEFT buffers, respective to each
>> eye.
>> I'm trying to recreate that with VTK because VTK implies volume rendering
>> significantly.
>>
>>
>> Sankhesh Jhaveri-2 wrote
>> > Perhaps, I misunderstood what you’re trying to do.
>> >
>> > That API lets you render a whole scene (i.e. OpenGL context) with one
>> eye.
>> > For rendering both, left and right, you’d have to have two different
>> > windows with the same scene - one for left and one for right.
>> > The compositing will have to be dealt with, by the external system this
>> > way.
>> >
>> > What is the display setup you use? CAVE, HMD, etc?
>> >
>> > If you’re using off-axis projection, you could use
>> > vtkCamera::SetEyePosition
>> > (the center of the two eyes) and vtkCamera::SetEyeSeparation. However,
>> > these settings are only used for off-axis frustum calculation.
>>
>>
>>
>>
>>
>> --
>> View this message in context:
>> http://vtk.1045678.n5.nabble.com/VTK-Stereo-Help-Rendering-Left-Right-Eye-Separately-tp5743559p5743566.html
>> Sent from the VTK - Users mailing list archive at Nabble.com.
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-- 
Sankhesh Jhaveri *Sr. Research & Development Engineer* | Kitware
<http://www.kitware.com/> | (518) 881-4417
​
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