HI Ravi, The OSG doesn't have an inheritance scheme like this within osg::Program for osg::Shader in exactly the way you are wanting but there are several features that allow you to do something similar.
The most straight forward answer to use mulitple osg:Program as ou are already doing but share the osg::Shader that you wish to between the osg::Program. The next way would be to use a isngle osg::Program that links in all the osg::Shader that you might want and then use the #pragma(tic) shader compsition support in OSG-3.4 onwards to select which parts you want active for each subgraph by assign the appropriate #define settings on the each subgraph StateSet's. Have a look a the osgshadercompsition example to see it in practice. Robert. On 2 September 2016 at 23:03, Ravi Mathur <[email protected]> wrote: > Hi all, > > I have a Geode that contains multiple Drawables. I set a Program containing a > vertex Shader on the Geode's StateSet. This was done because all contained > drawables should use the same vertex shader. Everything works great. > > Now, I want to set a fragment shader on just one of the contained drawables, > but keep using the vertex shader from the main geode. So I created a new > Program, added the custom fragment Shader, and added the Program to the > drawable's StateSet. But now that drawable doesn't use the parent geode's > vertex shader! It just uses the OpenGL fixed-pipeline vertex shader. > > Is there a way to inherit just the vertex shader from a Geode to one of its > contained Drawables that has its own fragment shader? I feel like I'm > approaching this incorrectly, hopefully someone can slap me into shape. :) > > Thanks! > Ravi > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=68507#68507 > > > > > > _______________________________________________ > 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
