Hi again, I appologize in advance for asking stupid questions;)
By changing the line cam->setRenderOrder(osg::Camera::PRE_RENDER); to cam->setRenderOrder(osg::Camera::POST_RENDER); everything works as expected (src in my previous post). I have the following questions: 1: Is this correct behaviour? Does a camera have to be POST_RENDER for buffer read operations to take place in the final draw callback without errors. I was getting the correct results before, eventhough an error was thrown... 2: Is there any way I can get the value (a texel from a GPU resident texture) in the update traversal and in the same frame as I request it? The way I do it now I am always one frame behind, since the value is requested in the update traversal and fetched in the draw traversal. Thanks! Martin ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=29096#29096 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
