Re: [osg-users] Stereo anaglyph: which glasses?
On 9/29/2010 6:32 AM, Jan Ciger wrote: How can I tweak OSG red/cyan? I suppose you will need to change the rendering code, I am not aware of this being tweakable anywhere, as only OpenGL color masks are being used - which basically say render everything into red or blue channel (or some combination of them). Just a thought... All you need to do is modify the final output color of each pixel. I was wondering if the color matrix could be used for this, assuming OSG even supports that (I've never looked, and I don't have easy access to the source right now). It also could conceivably be done in a fragment shader. --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Stereo anaglyph: which glasses?
On 9/30/2010 10:39 PM, Jason Daly wrote: Just a thought... All you need to do is modify the final output color of each pixel. I was wondering if the color matrix could be used for this, assuming OSG even supports that (I've never looked, and I don't have easy access to the source right now). It also could conceivably be done in a fragment shader. Never mind about the color matrix. I just discovered it only works for pixel transfer operations. You can still use a fragment shader, though. --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Stereo anaglyph: which glasses?
Hi Francesco, On 29/09/10 17:03 , Francesco Argese wrote: I have enabled anaglyph stereo visualization on my application and I have tried some red/cyan glasses. Watching app only with one eye at a time it appear that cyan lens works well (I see only one image without noise) while the red lens show ghosting problems. I have did a research among the old post hoping that someone had my same problem. I have found only the post source for 3d glasses [1] but there there are no information about the type of glasses and the appropriate colour of lenses. Presumably you don't have a color-calibrated monitor, like most of us, so the chances that the red/cyan RGB values that are picked by OSG, the values sent to the monitor, and the actual color values displayed match your glasses are virtually zero. This is probably more a case of tweaking the OSG red/cyan to match whatever glasses you have. Cheers, /ulrich ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Stereo anaglyph: which glasses?
Ulrich Hertlein wrote: Hi Francesco, Presumably you don't have a color-calibrated monitor, like most of us, so the chances that the red/cyan RGB values that are picked by OSG, the values sent to the monitor, and the actual color values displayed match your glasses are virtually zero. How can I calibrate colours of my monitor? Are there some tools to do so? This is probably more a case of tweaking the OSG red/cyan to match whatever glasses you have. How can I tweak OSG red/cyan? Cheers Francesco -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=32165#32165 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Stereo anaglyph: which glasses?
On Wed, Sep 29, 2010 at 10:35 AM, Francesco Argese kekk...@gmail.com wrote: How can I calibrate colours of my monitor? Are there some tools to do so? Look up ICC color profiles or color management: http://en.wikipedia.org/wiki/ICC_profile On the other hand, this isn't going to be of much use to you, because also the software needs to use the profiles to adjust the color representation. OSG doesn't do that. How can I tweak OSG red/cyan? I suppose you will need to change the rendering code, I am not aware of this being tweakable anywhere, as only OpenGL color masks are being used - which basically say render everything into red or blue channel (or some combination of them). Regards, Jan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
