Element position = new Element(new GenericVector(DataType.FLOAT, 3), "Position");
        DataLayout layout = new DataLayout(position);
        VertexBuffer vertexBuffer = new VertexBuffer(layout, 100);

        vertexBuffer.fullyInitialize();

        for(Vertex v: vertexBuffer)
        {
            v.setAttribute(position, 3f, 2f, 4f);
        }

        // oder
//        for (int i = 0; i < vertexBuffer.getVcount(); i++) {
//            Vertex v = vertexBuffer.getVertex(i);
//            v.setAttribute(position, 3f, 2f, 4f);
//        }

        ByteBuffer datenBuffer = vertexBuffer.buffer;