Yes, i did it. But the new attachments system was not needed.There is another topic about this:
what are render attachments exactly?
You only need to use the HDR workflow.
the filter has to use mipmaps to blur the brightness. And you have to set the texture’s blend mode to ‘add’ or ‘screen’, make the difuse of the ‘monitor’ material black and increase the (render to) texture color influence to more than1.0