I Have A Problem That I Don't Solve So Far. It's Pipe Line For Post Process.
When I Coding a Prototype For Post Process,
I Think The Way At First That Set A Down Sample For HDR Tone Mapping, Next Go To Blur Filter With Graph Of Gauss's Function.
Last, Repeat Above Progress.
However,When I Was Planed Blur Effect, I'm Crazy Cause
If I Bring Final HDR Render Scene And I Use The Scene For Blur,
Then I Will Get Very Very Bad Frame Rates.
So I'm Helter-Skelter Cause My Project Stoped For It.

I Want To Listen Your Some Advice.
Knowledge Is Well-Known Wisdom.
So Wisdom Is Very Absolute.