Hi Simon, On Thu, Jul 8, 2010 at 11:09 PM, Simon Julier <[email protected]> wrote: > > I'm developing a video-see-through AR application which will show the user > the contents of holes in the ground. To get the correct depth cues, the user > should be able to see the contents of the hole only when they look down into > it. From what I can tell, the right way to achieve this is to create some > "phantom objects" which are transparent but occlude objects placed behind > them. These phantom objects should be realised by writing them into the > depth buffer only. > > Is that correct? If so, could anybody point me towards a suitable > reference? >
You can use the osg::ColorMask state attribute to prevent the object from writing to the color buffer. I've used this technique in my video-see-through apps. Cheers, Farshid
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