I'm messing around with the MAME HLSL configuration to have scanlines in my games, and it's working like a charm with all my horizontally oriented games.
However, when I apply those settings to my vertical games, such as Karate Champ, Tokio, among others, the scanlines are automatically turned 90 degrees and placed vertically. The odd thing here is that I remember playing those vertical oriented games back in the real arcade machines and their scanlines were horizontal as well, just as the other games with horizontal orientation.
How can I make HLSL to display horizontal scanlines in my vertical games?
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