Yes, I'd also use a viewport to render to a particular area. Also make sure you set the clip rectangle to be the same as the viewport otherwise operations like glClear will affect the whole texture.
On 5 May 2010 11:48, Martin Aasen <[email protected]> wrote: > Thanks Christian, > > I am rendering to a texture which is attached to a FBO. The problem was > that I only want to write to the parts of the texture that need to be > updated. That is, if I have a 8192x8192 texture and only need to update a > small area of 128x128, I don't want to prosess all 8192x8192 fragments. > > I have made some tests using a view port that matches the selected area of > the texture. This seems to work. Sorry for not checking this well enough > before posting. > > Any additional comment, pointers or suggestions are still welcome! > > Cheers, > Martin > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=27561#27561 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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