> Is your drawable a ShapeDrawable? Then you're pretty much out of luck,
> because these only set texture coordinates on unit 0 and don't give you
> access to their internals.


thanks Skylark! - that would explain the different results Im getting for unit 
0 and 1 with a ShapeDrawable. 
Ive now changed to a model derived from osg::Geometry and the texture animation 
is working fine.


Those ShapeDrawable classes seem limiting ... is there a goal to derive them 
from osg::Geometry rather than the current raw OpenGL calls?

Julia

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