This image was generated with the following code:

from direct.directbase.DirectStart import *
from pandac.PandaModules import *
from direct.actor.Actor import Actor
 
a = Actor('panda.egg', {'walk' : 'panda-walk.egg'})
a.pose('walk', 0)
 
a.reparentTo(render)
 
dlight = NodePath(DirectionalLight('dlight'))
dlight.reparentTo(base.cam)
render.setLight(dlight)
 
base.disableMouse()
camera.setPosHpr(-41, -23, 18, -61, -15, 0)
 
def makeNewDr():
    dr2 = base.win.makeDisplayRegion(0.1, 0.4, 0.2, 0.6)
    dr2.setClearColor(VBase4(0, 0, 0, 1))
    dr2.setClearColorActive(True)
    dr2.setClearDepthActive(True)
 
    render2 = NodePath('render2')
    cam2 = render2.attachNewNode(Camera('cam2'))
    dr2.setCamera(cam2)
 
    env = loader.loadModel('environment.egg')
    env.reparentTo(render2)
 
    cam2.setPos(-22.5, -387.3, 58.1999)
    return cam2
 
def splitScreen(cam, cam2):
    dr = cam.node().getDisplayRegion(0)
    dr2 = cam2.node().getDisplayRegion(0)
 
    dr.setDimensions(0, 0.5, 0, 1)
    dr2.setDimensions(0.5, 1, 0, 1)
 
    cam.node().getLens().setAspectRatio(float(dr.getPixelWidth()) / float(dr.getPixelHeight()))
    cam2.node().getLens().setAspectRatio(float(dr2.getPixelWidth()) / float(dr2.getPixelHeight()))
 
#cam2 = makeNewDr()
#splitScreen(base.cam, cam2)
 
run()