I'm guessing I have missed something or this just isn't supported with this version?
It should be supported, but I don't see any dotmask.glslp (preset), just the shader itself (.glsl) - are you sure you're not loading another preset, that includes the dotmask shader, and has parameters to adjust ?
@neurocrash Just in case anyone else gets the same idea, I was able to run Dos Vectrex Emulator in Retropie Dosbox, and while it looks great, it is far too slow on my Raspberry Pi 3. I think it runs at about 50% of the original speed.
Thank you for sharing your solution. The question remains why the save function from the shaders menu doesn't work for you and me, although the RGUI says that it did save the settings.
If you want to dive deeper into the "failed saving config" error, please open another topic about it (for tidiness and all), start any game from that core with verbose logging via the Runcommand menu, try to (fail to) save the config, and post the contents of /dev/shm/runcommand.log in a code block in your new topic. 🙂
The vertical shader I just took for testing purpose, because it shows something significant ;-)
Currently I'm using the bilinear (blur) shader since I find the Atari games in all emulators way too blocky.
I use CRT + smoother for everything. Then again, the only stuff I really play on RetroPie is SNES and PS1.
We don't offer support for 3rd party images, especially the ones loaded with ROMs. If you want support here in the forum, start with the RetroPie provided image from retropie.org.uk/download. Otherwise, contact the author of the image and ask for support.
Ok, so after I wanted play some games now, I realized the bottom part of the lr-snes9x games are always black. I can't say how many rows, but maybe 10th. The other sides are all on the edge of screen and Emulation Station is shawn correct, lr-nestopia too. Is there a setting I miss? The strange thing is, in RetroArch menu the whole screen is used. The emulator makes the image of game smaller and shows a black bottom border only.
EDIT: Ok so, after quick testing, it happens also in PC Engine, but not the other emulators.
Im trying the same thing on my tv. The crosstalk you are talking about is caused by the distance between eyes, you need to move the warning message so if you see it without 3d lenses it overlaps with each other.