Hi Eq developers,

We are developing a project where we need to interface between the Gazebo 
robotics simulator (using Ogre as an internal renderer) and an Equalizer-aware 
external renderer (CAVE). We have been long hesitating between OpenSceneGraph, 
which has an already functional Equalizer implementation, and Ogre, that seems 
not to be as well integrated with Equalizer, but has a very active developer 
community and nicer graphics (also for offline rendering).

We have made the choice of OSG, because it is used in a similar project as 
ours, but after a couple of days of development, we are not sure we made the 
right decision.

If you can give us some insights about the pros and cons of these 2 solutions, 
that would help us a lot. For what we know:
OSG pros:
- nicely integrated with equalizer
- used in another project in multi-display environment that we are in close 
contact with
- well architectured and designed for distribution from the beginning
OSG cons:
- documentation is not up to date and incomplete
- development seems to have slowed down
- the example outputs really don't look good
- misses some features that ogre has (complex materials for instance, or 
shadows from only one light source)

Ogre pros:
- active developer community
- looks good and has many recent features (modern). Competes with state of the 
art renderers
- documentation is ok
Ogre cons:
- single-GPU oriented (at the beginning)
- incomplete equalizer integration (eqOgre)

So in any case, we would have to hack a bit. In the case of OSG, to implement 
missing features, in the case of Ogre to implement equalizer version.

What would be your insights concerning this comparison? Do you think, that the 
development effort would be important to raise OSG's graphical quality to 
Ogre's level?

Best regards

-- 
Axel von Arnim - Software Architekt Neurorobotics - Human Brain Project
fortiss --- An-Institut der Technischen Universitaet Muenchen
Guerickestrasse 25 | 80805 Muenchen | Germany
T +49 (0)89 360 35 22 30 | Fx +49 (0)89 360 35 22 50
[email protected] | www.fortiss.org


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