This looks interesting Jason. Thanks! I'll try that tomorrow. Nice greetings Mathias Buhr
Jason Daly wrote: > Eric Sokolowsky wrote: >> Mathias Buhr wrote: >> >>> Hi everyone, >>> >>> I'm trying to use the stencil buffer to render only parts of the final >>> image through other graph-attached cameras. The app works fine on ATI >>> hardware but NVIDIA fails. OpenGL reports that the stencil buffer has >>> only 0 bits (which is 8 bits on ATI, via >>> glGetInterv(GL_STENCIL_BUFFER_BITS) in a DrawCallback). I have tested >>> this on various linux boxes (Ubuntu 9.04, Fedora 11) with recent >>> hardware and recent drivers. >>> I'm pretty sure that a stencil buffer is available on this hardware >>> because OSG seems to be able to utilize it (stereo-mode in >>> osgUtil::SceneView uses stenciling and works fine). I'm pretty sure >>> I've >>> missed something. Is there anything special to do to get or enable a >>> stencil buffer on Nvidia? >>> > > The stencil property of GraphicsContext::Traits is 0 by default. Just > set it to 8 before creating the GraphicsContext and it should work. > For example: > > osg::ref_ptr<osg::GraphicsContext::Traits> traits = > new osg::GraphicsContext::Traits; > traits->x = 100; > traits->y = 100; > traits->width = 640; > traits->height = 480; > traits->windowDecoration = true; > traits->doubleBuffer = true; > traits->red = 8; > traits->green = 8; > traits->blue = 8; > traits->depth = 24; > traits->stencil = 8; > traits->sharedContext = 0; > > osg::ref_ptr<osg::GraphicsContext> gc = > osg::GraphicsContext::createGraphicsContext(traits.get()); > > > --"J" > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
