Hi Ravi, If you want to use osg_Vertex then you'll need to setUseVertexAttributeAliasing().
Robert. On 17 September 2016 at 04:26, Ravi Mathur <[email protected]> wrote: > Hi all, > > I see some behavior that I don't understand when using the osg_Vertex shader > attribute across various graphics cards. Hopefully someone can shed some > light. > > I am enabling OSG uniforms using > GraphicsWindow->getState()->setUseModelViewAndProjectionUniforms(true). Then, > in my vertex shader, I use osg_ProjectionMatrix and osg_Vertex. Note that I > don't call State::setUseVertexAttributeAliasing(). > > Everything works fine on many graphics cards, but on some cards my vertex > shader behaves as if osg_Vertex is undefined. It doesn't give any errors, > just produces results as if the vertex is zero. This only seems to happen > with graphics cards where the renderer reports "OpenGL 4.1 Compatibility > Profile Context". Examples are ATI Radeon HD 5450 and AMD FirePro V5900 cards. > > Any ideas on what I'm missing here? > > Thanks! > Ravi > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=68633#68633 > > > > > > _______________________________________________ > 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
