I've encountered an issue with mame where two vertical tear lines appear in stationary positions on screen. It is most noticeable when the screen scrolls horizontally in a uniform manner because you will see a "ripple" effect where the 2 lines are. I made a short video:
You can mainly see it when the lines pass over the trees. This is using the 240p test suite for the genesis but the problem occurs in everything I've tried so far.
This does not happen when using opengl with the same settings.
I've tested it so far in .193 and the latest .198.
My settings are defaults except: waitvsync 1 prescale 3
I've tried using both syncrefresh as well as triplebuffer but neither of those made a difference. I'm not really sure what all the different sync options do in mame, but I assume it's some kind of vsync issue.
Specs: Windows 10 8700k gtx 1050 ti
edit: I was able to get the lines to go away in d3d by setting prescaling to 1 instead of 3. Setting it to 2 will result in just one line down the middle. Is there something wrong with d3d and prescaling?
Edited by Xenphor (06/05/18 11:29 PM)
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