Thanks Ulrich and Jason, Originally I was thinking of something that would load a texture and modify everything with a certain hue (eg everything with a given hue is set to a different hue at runtime). Sounds like there aren't any existing tools for something like that (though it wouldn't be that hard to write).
I'll pursue the other option of setting a material on the geometry. This makes things slightly more complicated because the geometry must use 2 separate materials which our current models don't have. Thus I'll have to specifically edit/create each of our models with the different materials. PS Shaders are a difficult option because we will likely be running our software on machines that don't support the new shader stuff... That's the only reason I wanted to stay away. Thanks! -Brad -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ulrich Hertlein Sent: Saturday, July 18, 2009 12:34 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Runtime texture mod On 17/7/09 6:14 PM, Brad Huber wrote: > Does anyone know of a good way to modify pixels in a texture at runtime > w OSG? > > Basically I’m looking for a way for the user to select an arbitrary > color to be used on an airplane or similar. EG ability to switch to any > color as in the attached image. From what you're saying it sounds like you really only need to modify the object base colour, using one of the techniques that Jason suggested. If you *really* want to modify individual pixels in a texture you can use Image::data() to get a pointer to the image data and modify that directly. It might be a bit tricky since you have to take the Image format into account. Call Image::dirty() when you're done with the modification to upload the new data to the texture. Cheers, /ulrich _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
