Faking Bloom effect for LDR render

Development Rendering
1

Is there any technique to achieve that? , working with HDR killing performance on some android mid range gpus and I’m looking for anyway around to make it done

Thanks

2

UP, looking for any tips really

3

mmm, have you looked into using the spiral blur node in a post process material? Its not cheap, but maybe worth looking into.

Or perhaps, you could use emmissive translucent materials, on camera aligned geometry, to fake the blur around lights and such?