[osg-users] Oculus+OSG

[Christian Buchner]

Hi Björn,

let me use this thread to suggest a new feature. I would like the
positional tracking of the osgoculusviewer to be optional, possibly by
calling a member function oculusDevice->setPositionTracking(false);

If you remember my use case, there is a camera strapped to a person's head,
which already tracks the head position. Superimposing an external tracking
would cause some issues.

In the 0.5.0.1 version of the osgoculus viewer I've already added a switch
to disable the tracking, but it seems I will have to repeat it for the
current 0.7.0.0 enabled version (the master branch)

Also, somewhat off-topic: I may have found an alternative to the DK2 head
set by using an iphone 6 and Google Cardboard like devices, such as the
Zeiss VR One. Combine this with the duet display driver (duetdisplay.com)
and you can use this iphone-based headset with sufficiently low latency at
60 FPS while using the PC for rendering the graphics. As I need no
positional tracking from the phone fed back from the PC, this will work for
me.

Christian


2015-09-02 22:27 GMT+02:00 Björn Blissing <bjorn.blissing at vti.se>:

>
> cbuchner1 wrote:
> > Trying to build the current osgoculus master branch against Oculus SDK
> 0.7.0.0 using OSG 3.2.1
> >
> >
> > the following code from oculusdevice.cpp is making trouble. For OSG 3.2
> the variable "ctx" is undefined.
> >
> > void OculusTextureBuffer::setRenderSurface(const osg::State& state)
> > {
> > #if(OSG_VERSION_GREATER_OR_EQUAL(3, 4, 0))
> >     const osg::GLExtensions* fbo_ext = state.get<osg::GLExtensions>();
> > #else
> >     const osg::FBOExtensions* fbo_ext =
> osg::FBOExtensions::instance(ctx, true);
> > #endif
> > ...
> >
> > void OculusDepthBuffer::setRenderSurface(const osg::State& state)
> > {
> > #if(OSG_VERSION_GREATER_OR_EQUAL(3, 4, 0))
> >     const osg::GLExtensions* fbo_ext = state.get<osg::GLExtensions>();
> > #else
> >     const osg::FBOExtensions* fbo_ext =
> osg::FBOExtensions::instance(ctx, true);
> > #endif
> > ...
> >
>
>
>
> cbuchner1 wrote:
> > A followup: inserting the following line into both #else branches fixes
> it
> >
> > const unsigned int ctx = state.getContextID();
> >
>
>
> Ah, the woes of trying to have support for multiple OSG version at the
> same time. I did some refactoring yesterday and this bug obviously slipped
> through without being tested. Sorry about that.
>
> Another user already submitted a pull request with a fix, which is merged.
>
> Best regards
> Björn
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=65002#65002
>
>
>
>
>
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