HI Dario, On 25 March 2013 10:00, Dario Minieri <[email protected]> wrote: > I would to implement the possibility to make a black&white vision and/or > grayscale vision. It's possible to implement this feature modifying the > camera properties only and not the geometry? Any suggestions are appreciated.
You can use a fragment shaders to compute the greyscale for the geometry you have, but unless you have a very simple scene with simple state usage it'll be rather involved. The other route is to render the whole scene graph to a RGB texture then do a second rendering pass that takes the resulting texture as input and uses a shader to compute the greyscale from the RGB texture input. The osgdisortion example illustrates how you can set up a render to texture and then re-render the resulting texture, all you need to do different is to use a regular quad rather an one with distorted tex coordinates and use a custom shader to the rgb -> greyscale. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
