Hi all, I have an osg::Camera that renders to an FBO texture, and at some given point in time, I want to take a snapshot (for later rendering) of a sub-region of that render target's texture. I've tried two methods, one that works but is not optimal, and another that doesn't:
The first is to attach an osg::Image to the camera for a single frame. This works, but seems needlessly costly since I don't need to read data back into main memory, I just need a texture snapshot in graphics memory to render onscreen later. My second approach was to create a new osg::Texture object and use osg::Texture::copyTexImage2D in a camera post-draw callback, but I only succeeded in copying a region of the framebuffer (as the documentation indicates -- I thought it was worth a shot anyway). Anyone out there know of a better way to accomplish what I'm trying to do here? Thanks, Craig _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
