First, the screenshots. I'm linking them since the screenshots are 1920x1080 and I don't want to break the layout of the board. All of them have various configs for the screen in the center, just ignore that, as it's the standard hlsl.json.
The way you use it is you take the file in artwork\bgfx\border_blur\default.lay, and copy it into a correctly-named artwork folder for the game you want to use it with. Say, you'd create a folder called artwork\ibara and copy default.lay into it.
Then, when running from the command line, use either -view0 Horizontal or -view0 Vertical depending on whether it's a vertical or horizontal game, and then choose the correct pillarboxing shaders:
Index 
Flat 
A new shader for those who want to use their entire screen space
Reply
I did some changes. This is the way I like it.
