render.py

        filePov.write("}\n")
        filePov.close()
        ##################### end write ##########################################

        pov_binary = PovrayRender._locate_binary()
        
        if sys.platform[:3] == "win":
            p1=subprocess.Popen(["%s"%pov_binary,"/EXIT","%s"%iniPrevFile],
                stdout=subprocess.PIPE,stderr=subprocess.STDOUT)
        else:
            p1=subprocess.Popen(["%s"%pov_binary,"-d","%s"%iniPrevFile],
                stdout=subprocess.PIPE,stderr=subprocess.STDOUT)
        p1.wait()

        tex.use_nodes = True
        tree = tex.node_tree
        links = tree.links
        for n in tree.nodes:
            tree.nodes.remove(n)
        im = tree.nodes.new("TextureNodeImage")  
        pathPrev="%s.png"%outputPrevFile
        im.image = bpy.data.images.load(pathPrev)
        name=pathPrev
        name=name.split("/")
        name=name[len(name)-1]
        im.name = name  
        im.location = 200,200
        previewer = tree.nodes.new('TextureNodeOutput')    
        previewer.label = "Preview"
        previewer.location = 400,400
        links.new(im.outputs[0],previewer.inputs[0])
        #tex.type="IMAGE" # makes clip extend possible
        #tex.extension="CLIP"
        return {'FINISHED'}