Actually, I completely misunderstood the original post - that was the wrong link. The repo is at https://github.com/libretro/Genesis-Plus-GX-Wide .

Here are the instructions to install this:

git clone --recurse-submodules https://github.com/libretro/Genesis-Plus-GX-Wide cd Genesis-Plus-GX-Wide make -f Makefile.libretro

Then you may copy the generated genesis_plus_gx_wide_libretro.so file to a folder to use it. What I did in my case was:

sudo mkdir /opt/retropie/libretrocores/lr-genesis-plus-gx-wide sudo cp genesis_plus_gx_wide_libretro.so /opt/retropie/libretrocores/lr-genesis-plus-gx-wide/

and then added it to /opt/retropie/configs/megadrive/emulators.cfg , in this case as

lr-genesis-plus-gx-wide = "/opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-genesis-plus-gx-wide/genesis_plus_gx_wide_libretro.so --config /opt/retropie/configs/megadrive/retroarch.cfg %ROM%"

If it doesn't compile at first, you may need the following dependencies:

sudo apt install libopusfile-dev sudo apt install libjansson-dev

Then, in-game, adjust the "columns to add for widescreen" option. See recommendations in the original link.

To be honest, it is very experimental and, to be honest, a bit more "this sounds awesome in concept, but in hindsight it really becomes clear why this wouldn't really work". Sure, we get a wider viewport but it is often rendering things that are meant to be hidden from the user (so, when not in the game, it's placeholder text or gibberish). Also, even though in-game the viewport is bigger, most games don't render sprites there, meaning that animated enemies will not show in the "overflow"/"wider" area, only the background layer, or there will be massive pop-in. And, of course, you cannot move there.

But as an interesting experiment, it's there - by all means try it out.

Don't you just hate when you have had a problem for days and you finally ask for help, you happen to figure it out? I guess it's cause at that point you abandoned your train of thought.

Anyways for anyone else trying to get the analog features working for farious SEGA games and rebind them for your flightstick or steering wheel I've made a little chart so you can add the rebinds manually

Find your games keybindings file, as example i'll use Afterburner II on the MegaDrive. which can be found at: "/opt/retropie/configs/megadrive/Genesis Plus GX/"
In my case with filename "After Burner II (USA, Europe).rmp"

Open it in notepad and adjust your keys, here is an example of the default buttons, with the A,B,X,Y buttons added, and the vertical throttle removed.
I've also made a little picture you can use as reference, you'll find that under the code, it has all the numbers you need to use.
That's all, have fun setting up your flightsticks and racewheels on a 16bit console.

#Device ID for XE-1AP: input_libretro_device_p1 = "773" #Start and Select input_player1_btn_select = "2" input_player1_btn_start = "3" #A,B,X,Y = East,South,North,West input_player1_btn_a = "11" input_player1_btn_b = "13" input_player1_btn_x = "10" input_player1_btn_y = "12" #D-Pad is unused so lets add Select and Start to it incase your flightstick doesnt have enough buttons input_player1_btn_up = "-1" input_player1_btn_down = "-1" input_player1_btn_left = "2" input_player1_btn_right = "3" #Left Joystick input_player1_stk_l_x+ = "16" input_player1_stk_l_x- = "17" input_player1_stk_l_y+ = "18" input_player1_stk_l_y- = "19" #Right joystick (Throttle) input_player1_stk_r_x+ = "-1" input_player1_stk_r_x- = "-1" input_player1_stk_r_y+ = "21" input_player1_stk_r_y- = "20" #Left Shoulder buttons input_player1_btn_l = "10" input_player1_btn_l2 = "12" #Right Shoulder buttons input_player1_btn_r = "11" input_player1_btn_r2 = "13" #No idea what E1 and E2 buttons are for, but lets add them to the thumbstick buttons (R3, L3). input_player1_btn_l3 = "1" input_player1_btn_r3 = "0"

XE-1AP.png

Works a treat! Thank you so much.

lr-opera worked on Lemmings with Player 1 as the mouse, it didn't occur to me to try Player 2 for Sega CD.

I've only had it happen on my 3B+ setup with the lr-genesis-plus-gx emulator. And it wasn't unique to megadrive games. I has some Master System ROMs also do it.

Hope they can resolve this in an update before long.

Hm, it might be something with the new RetroArch version and bezels. I don't have bezels in my installation, but I frequently use shaders, so I don't think the shaders have any influence.

Let's see if we can reproduce it.

@melbmatt50

Hmm...
bios.gg in the BIOS folder.

Try disabling threaded rendering in retroarch.
Launch run-command, make sure there are no setting that look awry, perhaps resolution; launch with verbose mode enabled, and try to get the log from /dev/shm/ posted to pastebin here.

Thanks - but I don't think it's a Dolphinbar specific issue. I can get it to crash with just a plain old keyboard/mouse switch too.

Doing a bit of debugging work I have found if I comment out this bit of code on line 2489 of libretro.c it no longer crashes. You lose the crosshairs obviously but otherwise it works fine, so it seems that something in the crosshair generating code is related to the crash. At least now I've got an idea of where the crash is originating from, I'll see if I can debug further and once I've got some better idea of the root cause I can post the issue to the core's github repo for further discussion.

Lines 2487 - 2490 on libretro.c

if (input.system[0] == SYSTEM_LIGHTPHASER) { //draw_cursor(input.analog[0][0], input.analog[0][1], 0x001f); }

@luisv96 said in Certain roms dont work on lr-genesis-plus-gx:

@mitu when i try to run verbose logging nothing happens

What do you mean "nothing happens"? Did you check the log in/dev/shm/runcommand.log ?

Please ignore this - I found out what the problem was, I'd turned on Shader #0 Filter to LINEAR. That is what was causing this effect in lr-genesis-plus-gx.

The repository has been updated and I can now build in x86_64

@edmaul69 got it. I didn't have ssh on, thanks.

Yeah I would rather the cue and not bin files listed. You can always add the extension manually though.

I am hoping that seeing as how supergrafx now supports chd format that it will make it's way into the genesis_plus_gx core..saves a LOT of space and tidies up nicely.

Won't have to worry about missing cues and no music ect...