Hi Ga, The OSG supports VBO's within the osg::Geometry class so could do what you need in very straight forward - far easier than with raw OpenGL. Just do geometry->setUseVertexBufferObjects(true); See osggeometry for more details on osg::Geometry.
Robert. On Fri, Sep 23, 2011 at 5:27 PM, Ga Scan <[email protected]> wrote: > Hi, > > I am new to OSG but experienced in OpenGL > I need to implement some OpenGL code with OSG. > > I am using VBOs to render new sets of 3D points (~1 million / frame) > inside every glutDisplayFunc callback. > > I have studied the examples and found > osgviewerGLUT is a good starting point > but I cant seem to find all the right pieces to accomplish the same in OSG. > > The following example code will render points inside glutDisplayFunc callback. > Can this be reproduced with OSG ? > > glEnableClientState(GL_VERTEX_ARRAY); > glBindBuffer(GL_ARRAY_BUFFER, pvbo); > glVertexPointer(3, GL_FLOAT, 0, 0); > > float *buffer = captureBuffer(); > > glBufferData(GL_ARRAY_BUFFER, buffer_size, > buffer, > GL_DYNAMIC_DRAW); > releaseBuffer(); > > glDrawArrays(GL_POINTS, 0, num_points); > glBindBuffer(GL_ARRAY_BUFFER_ARB, 0); > glDisableClientState(GL_VERTEX_ARRAY); > > > Thank you! > > Cheers, > g > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=42929#42929 > > > > > > _______________________________________________ > 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
