Hello Johannes,
Schaefer Johannes wrote:
> i am developing a simple opensg application with a qt4 gui. as implementation
> methode i am using the passive window ( similar to
> http://www.opensg.org/doc-1.6.0/QT.html#TutorialQTPassiveWindow ).
> Unfortunaly when i am loading vrml files there is a corrupt visualisation. if
> i am creating a simple geometry, every thing is fine (
> http://img151.imageshack.us/img151/5971/correct.png ).
> in the most cases the object is only black (
> http://img257.imageshack.us/img257/4361/wrongelephant.png ), in some cases a
> few parts of the object are colored (the vrml file has subobjects,
> http://img7.imageshack.us/img7/8035/wrongcar.png ) and the stanford bunny
> looks ugly ( http://img30.imageshack.us/img30/1448/wrongbunny.png ). in other
> opensg applications (with qt3) the objects look ok.
hm, since you are saying the objects look ok in other OpenSG apps, I
suspect that Qt4 changes OpenGL state and when rendering starts it is
not reset to the OpenGL defaults, which in turn confuses OpenSG.
If you have an OpenGL debugger (e.g. bugle) you could try running your
program under it and have it log OpenGL calls. If you insert some dummy
GL call (e.g. glGetString(GL_VENDOR); ) before rendering with OpenSG you
should be able to see the calls that happen before rendering starts.
Comparing that with one of the programs that work you might be able to
find what state is different.
Do the OpenSG Qt4 test programs (e.g. testWindowQT4_qt.cpp) work with
your models?
Cheers,
Carsten
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