public FrameBuffer getOutputFrameBuffer() {
        return out;
    }
Returns the framebuffer where this ViewPort's scenes are
rendered to.

@return the framebuffer where this ViewPort's scenes are
    rendered to.

@see #setOutputFrameBuffer(com.jme3.texture.FrameBuffer)
jme3-core/src/main/java/com/jme3/renderer/ViewPort.java