Greetings all, I've been learning PBOs here lately, and I can't seem to find any tutorials about how to use OSG::PixelBufferObjects. If anyone can point me in the direction of one, that would be awesome, as I wouldn't have to mix OGL and OSG code quite as much as I'm doing now.
Right now what I'm doing is trying to copy back the frame buffer to a PBO each frame, but I can't get glGenBuffers to return a valid buffer ID. I've tried passing in a single int or an array, but all I get back are 0's. (In a strict GLUT/GL project, I get 1,2,3..) I've made sure (as much as I can) that I have a context.. I've created a graphicscontext, a window exists, I've called viewer.realize(), even tried one viewer.frame() before glGenBuffers. All I can get back are 0's. So naturally when I try to bindbuffer / readpixels / mapbuffer, I just get back a null pointer because my bufferID is zero. Can anyone suggest a reason this might be happening? (Even if you can point me to a good OSG tutorial on using OSG::PixelBufferObjects, I'd still be curious to know.) Thanks in advance for any guidance anyone can offer.. Kris ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=39979#39979 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
