New Port - VVVVVV

psyke83

Another (possibly simpler) option is to force vsync without the need of Xorg by prefixing the command with SDL_RENDER_VSYNC=1. So, emulators.cfg would look like so:

vvvvvv = "SDL_RENDER_VSYNC=1 /opt/retropie/ports/vvvvvv/VVVVVV"
default = "vvvvvv"

The performance issue is due to a bug in SDL2's kmsdrm video driver when vsync is disabled, which doesn't happen when using the X11 driver via an Xorg context.

Setting the above environment variable will force vsync to be enabled, but this may cause in-game issues, judging from the comment on this rejected PR.

pamput

@pjft said in New Port - VVVVVV:

Edit: noticed that in the text I said zero (correct) but in the example it read 1 (wrong). Fixed it now.

Ok, I thought I was going crazy O___O Now it works! Thank you very much my friend :D

langest

@pjft
Adding XINIT: works great.
@psyke83
Adding SDL_RENDER_VSYNC=1 prevented the game from launching.

BuZz

@langest shouldn't have. Maybe something wasn't right. I've tested it and it works. Can post a log if you want.

roslof

@psyke83 Worked perfectly. Thanks!

roslof

Holy cow, that works for Drastic and Oric, too! You made my day, @psyke83 !

pamput

@roslof said in New Port - VVVVVV:

Holy cow, that works for Drastic and Oric, too! You made my day, @psyke83 !

how did you make it work for Drastic?

I've tried and met mixed results:

drastic = "XINIT:pushd /opt/retropie/configs/nds/drastic; /opt/retropie/emulators/drastic/drastic %ROM%; popd"
default = "drastic"

psyke83

@pamput said in New Port - VVVVVV:

@roslof said in New Port - VVVVVV:

Holy cow, that works for Drastic and Oric, too! You made my day, @psyke83 !

how did you make it work for Drastic?

I've tried and met mixed results:
drastic = "XINIT:pushd /opt/retropie/configs/nds/drastic; /opt/retropie/emulators/drastic/drastic %ROM%; popd"
default = "drastic"

You should try the other workaround. In this case, you would need to prefix the variable before the emulator rather than the pushd or popd:

drastic = "pushd /opt/retropie/configs/nds/drastic; SDL_RENDER_VSYNC=1 /opt/retropie/emulators/drastic/drastic %ROM%; popd"
default = "drastic"

Since we can't build drastic from source or control vsync via other means, it might be a good idea for us to set this as the default for the installation script.

pamput

@psyke83 ah, ok, I actually thought the variable would apply to the entire context, not the single individual command. Live and learn.

So this actually works, but still keeps a quite interesting bug. If you get drastic running and get into the menu, the rendering on screen is always on one frame behind what the actual menu state is in. Are you guys having a similar issue?

I'm wondering if it's worth starting a new thread discussing this, since we already hijacked the original conversation.

roslof

So this actually works, but still keeps a quite interesting bug. If you get drastic running and get into the menu, the rendering on screen is always on one frame behind what the actual menu state is in. Are you guys having a similar issue?

Yes, exactly the same issue. The side effect is worth the performance for me.

I'm wondering if it's worth starting a new thread discussing this, since we already hijacked the original conversation.

Probably. I confirmed this works for

Drastic
Oric
Port: Jump & Bump
Port: Prince of Persia (sdlpop)
...and the unsupported SRB-Kart (for those who followed the installation thread

Marathon could probably also benefit, but it launches differently. Since you figured this out, I'd welcome you to start the new thread and leave this to "VVVVVV".

pamput

I've moved the discussion here.

G30FF

Has anyone had luck getting an 8bitdo controller working in D-input mode working with this port? It recognizes my controller in X-input mode, but not in D-input mode.

Yeetzy

@tacgnol there's an option in-game to show/hide cursor. Worked for hiding mine :)

nitrohepcat

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