[X3D-Public] implementing stereo display

[GLG]

Hello Dave,

You might also want to take a look at the Contact viewer
for your experimentations. Under Control Pad, it has 
settings such as Eye Separation, Focal Distance, View 
Resolution and Projection Mode. A few others under Stereo.
It may not be everything you are looking for but enough
to mention it.

Cheers,
Lauren  

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From: x3d-public-bounces at web3d.org
[mailto:x3d-public-bounces at web3d.org] On Behalf Of Dave A
Sent: Thursday, September 15, 2011 2:22 AM
To: Charles P. Lamb
Cc: X3D Graphics public mailing list
Subject: Re: [X3D-Public] implementing stereo display

IMHO the best solution is to let the graphics driver
handle it. There are those that intercept OpenGL and/or
DirectX and generate viewpoint(s) as needed and do
whatever it takes to apply it to the display, whether
that's anaglyphic, side-by-side, interlace, headgear, or
multi-view-autostereo. Unfortunately good support for such
things is fleeting. A company called More had a nice one,
but I think they're extinct. I do wish that hardware
makers would publish good specs/code/docs/examples to all
open-sourcers to do their magic. That said, it should be
possible to make a stereo shader, right?

Dave A.

On 9/13/2011 8:17 PM, Charles P. Lamb wrote: 
Lately, I've been thinking about how to best
produce stereo imagery using X3D.  I've noticed that
FreeWRL does it all in the browser.  I'm wondering if a
better approach is to have two active viewpoint nodes--one
mapped to the browser left image display and one to the
browser right image display.  This will allow for more
flexibility.
 
The problem is that at least one of the parameters belongs
in both the browser side and in the scene side.  Although
the lines of sight are almost always set as parallel I can
imagine a user wanting to experiment with non-parallel
lines of sight.  I can see the inter-aperture distance
changed within the scene as a creative decision.  However,
the intra-aperture distance will also need to be changed
based on the size of the display and the distance to the
viewer.
 
Anyone have any other thoughts?
 
Charles P. Lamb



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