Re: [osg-users] unable to glReadPixels in osg::Drawable::drawImplementation

looks like the problem isn't with the code itself, but the scene graph that gets rendered before somehow didn't write to the depth buffer. sorry for bothering you, can -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=11053#11053 ___

[osg-users] unable to glReadPixels in osg::Drawable::drawImplementation

Hi, I'm trying to implement a custom osg::Drawable which need to check the depth component of a certain pixel before rendering itself. The problem is, glReadPixels always returns 1.0 (even for the entire viewport, which obviously should not be possible). I didn't touch the default settings of d