Texture problems are fixed, heureka!!!!
Enrico has fixed our problem with texture displaying. In the current subversion snapshot you can visualize textures as is should be. We have discussed about the maintenancer of the opengl rendermodule. Enrico has to do a lot of work for his graduation as a software engeneer, so he devided to let other guys work on the opengl renderer implementation. He will try to build some nice looking demos for proof of concept design studies.