g3dviewer: g3dviewer (3-D model viewer) g3dviewer: g3dviewer: G3D-Viewer is a application which employs the OpenGL and GtkGLExt g3dviewer: libraries to render a three-dimensional model in a graphical window. g3dviewer: g3dviewer: There is also a feature for rendering a thumbnail for use in a g3dviewer: graphical file manager. g3dviewer: g3dviewer: A number of different input file formats are supported. g3dviewer: g3dviewer: