Hi, In my shader I would like to have the direction of the light (sunlight) in eye-space, and since it doesn't vary per vertex I would like to pre-calculate it in OSG.
I'm not sure how to do this, I thought it would make sense to multiply the view matrix with the direction of the light like this, but I feel like I'm not sure what I'm doing. Anyone can help me out with this? Code: //to set up osg::Vec3f lightDir(1.f,2.f,-2.f); lightDir.normalize(); //and then each step... osg::Vec4 lightDirEye = worldCamera->getViewMatrix() * osg::Vec4(lightDir,1); lightDirUniform->set(osg::Vec3(lightDirEye.x(), lightDirEye.y(), lightDirEye.z())); ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=60630#60630 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
