[osg-users] Oculus+OSG

[Jan Ciger]

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Hello,

On 05/09/15 21:59, Björn Blissing wrote:
> Hi Christian,
> 
> Well, the simplest way of disabling the positional tracking is
> just to physically cover the lens of the Oculus Camera. ;)
> 
> I could make an option to disregard the positional information
> from the Oculus SDK. But since the new compositor framework
> introduced in Oculus SDK 0.6 the time-warp feature is enabled by
> default. So even if we don't use the positional information from
> the SDK, the positional information would be used in warping of the
> image (postional timewarp). So depending on how you overlay your
> video feed you may get strange juddering because of this feature.
> 

AFAIK, the timewarp uses only the current orientation from the
high-speed IMU that is on board. I have never heard about "positional
timewarp" being used (or even being developed). It probably wouldn't
make much sense, because the position tracker is much slower - around
60-120fps - compared to the IMU. So you wouldn't be likely to get a
"new" information towards the end of the frame warranting a
reprojection/warping.

J.
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