Bgfx pillarbox blur in vertical (Tate) issue? Letterbox version?

[grendelrt]

I am running a vertical monitor setup for vertical games and would like to use the bgfx blur border option for the letterboxed space above and below the picture, but I believe it is currently only specced to be used in a horizontal format.

I have tried both commands in the mame bgfx docs but both try to pillarbox into the sides(cave example picture), I thought it may be due to my monitor being in portrait so I tried landscape as well with no rotation and had the same result.

Commands I tried:

-override_artwork bgfx/border_blur -view Horizontal -bgfx_screen_chains crt-geom,pillarbox_left_horizontal,pillarbox_right_horizontal

-override_artwork bgfx/border_blur -view Vertical -bgfx_screen_chains crt-geom,pillarbox_left_vertical,pillarbox_right_vertical

No Command

Current example commands

Is there a command or method to get to work above and below liked gunvein in the example picture

[grendelrt]

Solved on Reddit (user [Embarrassed_Ad_3228] )using a custom bezel and config. Would be nice to get built in solution not to have to set each config. I use the vertical fallback for the layout file. But it doesnt look like you can do that with configs like you can inis?

https://i.redd.it/qgre5ciq4zwd1.gif

<!-- bezel.lay -->
<mamelayout version="2">
<!-- Define Views -->
<view name="Default">
<screen index="0">
<bounds x="0" y="0" width="1080" height="240" />
</screen>
<screen index="0">
<bounds x="0" y="240" width="1080" height="1440" />
</screen>
<screen index="0">
<bounds x="0" y="1680" width="1080" height="240" />
</screen>
</view>
</mamelayout>

Game config

<?xml version="1.0"?>
<!-- This file is autogenerated; comments and unknown tags will be stripped -->
<mameconfig version="10">
    <system name="1942">
        <bgfx>
            <window index="0" persist="0">
                <screen index="0" chain="pillarbox_right_horizontal" />
                <screen index="1" chain="crt-geom" />
                <screen index="2" chain="pillarbox_left_horizontal" />
            </window>
        </bgfx>
        <counters>
            <coins index="0" number="2" />
        </counters>
        <video>
            <target index="0" rotate="90" />
        </video>
    </system>
</mameconfig>