Screen tearing fixed in Jazz Jackrabbit, but still screen tearing in the Commander Keen games

[Gagert]

I've just tested the newest build of this DOSBox SVN libretro core, and Jazz Jackrabbit now works as it should (as mentioned in the recently closed Issue in the Issue-tracker).

However, the old Commander Keen games still suffers from screen tearing in during my quick testing of some of the games in that series. I tested Keen 1, Keen 4 and Keen Dreams, and they all suffer from the same tearing issues. In my regular DOSBox ECE build (non libretro) I use surface as video output (surfacepp to be exact to scale the image automatically), and there I get no screen tearing at all on the Keen games.

The framerate seems a lot less on the old Commander Keen games compared to Jazz Jackrabbit, maybe that's a factor to be considered regarding this and possible workarounds? I've both tried to enable- and disable vsync in a RetroArch global config override for those games, but did not notice any improvements in the Commander Keen games doing that.

[Gagert]

False alarm; I did some more testing today and it seems like I've had some old configs and global config overrides that had to be personally adjusted for each game to get rid of screen tearing (vsync was off on some global configs, and the video-output mode for emulated machine had to be adjusted differently for some "troublesome" games to get rid of the screen tearing).