> if u are only using hlsl to obtain scanlines, perhaps consider switching to mameuifx
> which allows you to still use the old style scanlines which were removed from
> official mame a long time ago. that way you wont need to turn on hlsl, but will still
> have scanlines (actually it lets you use other effects also such as Aperture)
Just to clarify, this function is still in MAME. Usage is: -effect effect.png
So, 'MAME mappy -effect scanlines' uses "scanlines.png" located in your artwork folder for the visual effects.
The part that was discontinued was the old way of doing scanlines, when it was done via software rather than an effects .png - those went away when the new video code was introduced in 0.107.