GameObject stereoscopically distorted if too close to Camera

I believe this is totally normal.

For example, place your index finger in front of your eyes and then focus on something far in the background (in real life).

You will see this same "doubling" effect.

You are right. I made that experiment.

But I don't want that effect. Do you have an idea how to make that happen?

The only thing I can imagine is scaling the object up instead of moving it close to the camera but then the scale would interfere with other objects.

You should mess around with IPD and FOV settings. FOV defines parallax fallof, IPD defines convergence at a unit distance.

Doing it right, you should set IPD to be exactly user's IPD in game units (i.e. if your virtual unit is 3 meters then you divide users' IPD by 3) and use FOV from the device.

Please don't try to "cheat". You will end up ruining the stereoscopic effect.

If you don't want objects to sit inside the range where your eyes have trouble converging them, then you can adjust the near clipping plane. As long as you don't mind objects getting sliced.

Or, if it doesn't make you (or your players) sick you can narrowen the IPD.

This kind of stuff will probably require eye tracking to do right. Luckily, I read that Oculus is looking into eye tracking :D

"raidho36" wrote:
You should mess around with IPD and FOV settings. FOV defines parallax fallof, IPD defines convergence at a unit distance.

Doing it right, you should set IPD to be exactly user's IPD in game units (i.e. if your virtual unit is 3 meters then you divide users' IPD by 3) and use FOV from the device.

I understand that this could then alter the stereoscopic effect for the whole scene? I would like to only break the stereoscopic effect for those particular GameObjects that come very close to the camera. My project has a fixed camera and only three objects, the lipstick being one of them, will ever possibly get that close.

"brantlew" wrote:
If you don't want objects to sit inside the range where your eyes have trouble converging them, then you can adjust the near clipping plane. As long as you don't mind objects getting sliced.

But then the lipstick would be sliced and not fully rendered. This is exactly what I don't want. :P

"cybereality" wrote:
Please don't try to "cheat". You will end up ruining the stereoscopic effect.

Isn't it possible to only break the stereoscopic rendering for dedicated objects? As in having two instances of the lipstick and render only one instance in CameraLeft and the other one respectively. And Transform "negatively" according to the stereoscopic algorithm? Do I have direct access to that math?

"boone188" wrote:
This kind of stuff will probably require eye tracking to do right. Luckily, I read that Oculus is looking into eye tracking :D

I hope they are. I have a list of a few incredibly cool eye-tracking based features for multiplayer VR film experiences.

"smx" wrote:
Isn't it possible to only break the stereoscopic rendering for dedicated objects? As in having two instances of the lipstick and render only one instance in CameraLeft and the other one respectively. And Transform "negatively" according to the stereoscopic algorithm? Do I have direct access to that math?.

To "break stereoscopic rendering", I think what you're asking to do is render the foreground object at infinite distance on top of the background, but with a size you'd expect of an object that's actually close to you. It doesn't sound comfortable for your average player to reconcile this strange depth reversal, but if that's what you really want to do, maybe you could try having another OVRCameraController with an artificially low IPD (at or near zero) that renders only the lipstick, and it renders after the rest of the cameras do their work?

Hmm, if did set up something to swap out its render layer when it gets too close you'd have to figure out a transition. It'd probably snap pretty bad going between the renders on the different types of cameras.

As a simple test it shouldn't be too hard to set up a little script with a distance check against the lipstick object and then a quick layer switch as it moves close/far.