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Transparent objects per polygon sorting

Posted: Wed Jul 30, 2008 10:43 am
by iigor
Is this feature will be in future OGRE versions?

Posted: Wed Jul 30, 2008 5:43 pm
by PolyVox
I don't think there are any plans for it, and in general it is a difficult task. You can have the situation where two polygons are intersecting, for example. You might be interested in a technique called 'depth peeling' which allows correct transparency even when the polygons are in the wrong order. Have a look at the NVidia paper here:

http://developer.nvidia.com/object/Inte ... rency.html

And this Ogre thread:

http://www.ogre3d.org/phpBB2/viewtopic. ... 6f4e2718c6

Posted: Wed Jul 30, 2008 7:54 pm
by nullsquared
Per-polygon sorting would be dog-slow.

Re: Transparent objects per polygon sorting

Posted: Wed Jul 30, 2008 7:56 pm
by xavier
iigor wrote:Is this feature will be in future OGRE versions?
Why do you need it?

Posted: Mon Aug 04, 2008 10:08 am
by iigor
Thanks for answers, i need transparency to show some objects fading in and fading out, and for some objects which are transparent all the time.

Re: Transparent objects per polygon sorting

Posted: Mon Dec 14, 2009 10:12 am
by Maxym
xavier wrote: Why do you need it?
Actually I would also appreciate having such a feature in the library, even though it would be slow.
Now, I'm looking for a handy rendering library for non-game project, and even several FPS would be pretty ok for it.

Has something changed since the last post?