Shader/Overlay with curvature

[Dgo]

I watched some videos where people use certain shaders that make the screen fit perfectly within a tv-shaped overlay thus no horizontal black bars or vertexes neither losing game screen either.

Kind of this [external-preview.redd.it]

Instead of this

Does anybody know which is that shader? I'm using another one for most of my cores but it does not include that option and iirc the shader I watched had other shaders inside that made the screen also look with many scanlines.

Is there a single shader w/o added stuff like scanlines that just cause the curvature effect?

[rgk]

Not 100% sure it is what you are looking for, but you can try this shader:
crt > shaders > crt-lottes-multipass:
scanpass.glsl
Nearest
3x

[Dgo]

Oh already solved but thanks for the reply. It seemed that only a group of shaders are able to allow the curvature so I did some searches and tried them, (there are many) and well... in combo with the overlays I'm seing my choices every day for a different system.
And yeah I think all of them are crt. There's also the community bezels that contain lots of customised shaders with many many options.