Hi Robert, On Thu, 22 Feb 2007 20:35:48 +0000 "Robert Osfield" <[EMAIL PROTECTED]> wrote: > > > > By the way, 'distortion meshes as custom scene graph elements' is > > reasonable, but in my experiences, I need 'pixel level' distortion > > in many cases. > > The general approach I've take could easily use a texture map to set > up the normals, its just a matter of setting up the scene graph > approrpriate, you can use all the normal scene graph primitive for the > rendering of the distortion mesh. > > In this instance the distortion mesh usedis just an osg::Geometry > convering the full screen, with vertices arranged as a grid, with each > vertex having a Vec3 tex coord normal pointing into the cubemap. The > graphics hardware interpolates between the tex coords so that > resulting tex coord used to look up the cubemap should be interpolated > reasonably well.
Interesting. My distortion setup tool is intended to use with multiple projections, and each PC renders only minimum required area into off-screen buffer, not full cubemap, because of rendering performance. Anyway, when I have time to work, I'll try to support these distortion mesh output in my tool. > > So I made a distortion/blending map creation tool > > 'Projection Designer', and also defined the distortion map > > as an image file which encodes pixel warp mapping in color of pixels. > > http://orihalcon.jp/projdesigner/ > > (Projection Designer is currently Windows version only, but its Linux > > version is almost done.) > > Cool, would a OSX port be possible as well? ;-) OK, I'll try. ;-) > My hope for the config file support for osgViewer is that it'll make > it possible for you to output a configuration file that could be > loaded my osgViewer based apps. > > > > I also made osgdistortion based real-time distortion viewer: > > http://orihalcon.jp/download/osgdistortviewer_src.zip > > At that time I used Producer's camera configuration file to > > specify the off-screen rendering matrixes. Maybe osgViewer also > > need such kind of configuration data. > > The osgViewer config file would contain both the camera setup and the > distortion mesh (and any textures required). The config file format > will be an extension of the .osg file format so it'll be possible to > embed mini scene graphs directly into the config file, so things like > external references to texture maps will all be possible. Yes, the native support of camera setup configuration will make the distortion/blending and cluster rendering be transparent to contents. It's a really desirable solution! Regards, -- Toshiyuki TAKAHEI <[EMAIL PROTECTED]> _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
