delta@clint:~/OSG_OP_OT-1.2/OpenSceneGraph$ osgimpostor
Warning:  Producer::RenderSurface, under the X11 environment
          has tested the glXWaitVideoSyncSGI extension and found it
          to not be working properly.  This does not necessarily mean
          that glXSwapBuffers will not block on VSYNC, but it does mean
          that the CPU bound application will not be able to synchronize
          with the graphics video retrace signal.  Most operations will work
          fine.
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
delta@clint:~/OSG_OP_OT-1.2/OpenSceneGraph$