DGEN over Composite Video

[Raygan Kelly]

Anybody have it working?

I read this thread on the Raspberry Pi forum, but I couldn’t completely follow it. Some people seemed to say that they got it working but there were no explicit instructions.

Currently, I get sound but no video.

[JdotFite]

I would also like to know if anyone has this working.

If I could get DGEN running over composite and be able to stretch osmose full screen for Sega Master System and be able to exit both emulators with my controller shorcut I created and am using for the other systems, my life would be complete.

[petrockblog]

There is a thread about that with a possible solution at https://github.com/retropie/RetroPie-Setup/issues/161. This might also go into a next update of the RetroPie Setup Script.

[Raygan Kelly]

I tried what what was being discussed in that github issue thread, and it did in fact work for me. I am now able to get a picture over composite.

I haven’t been able to get the image to scale to full screen, though. It doesn’t seem to be respecting my scaling settings in the dgenrc file, and is only filling about 3/4 of the screen. A definite improvement, but I’m still tinkering.

[karloss]

Hi Raygan,

Can you please give me an idea of what you did to get it to work? as I don’t quite understand exactly what I need to do from reading that thread.

Thanks

[Raygan Kelly]

I downloaded and compiled the SDL dispmanx library as instructed:

mkdir /home/pi/RetroPie/supplementary/dispmanx
cd /home/pi/RetroPie/supplementary/dispmanx
git clone –depth=0 git://github.com/vanfanel/SDL12-kms-dispmanx.git
cd SDL12-kms-dispmanx
nano Makefile
////////////////

// Now we need to edit the Makefile – there is a better way to do this I think but it works…
// Append this to CFLAGS -I/opt/vc/include/interface/vmcs_host/linux
// Save and exit

// Run configure
./configure

// Run make – DO NOT install – will break emulationstation and overwirtes some of your sdl library files
make

Then I skipped the stuff about recompiling EmulationStation. I’m not sure why it was reccomended and when I tried it it broke EmulationStation, so I just reinstalled EmulationStation from sources and skipped on to changing the es_systems.cfg file to use the Dispmanx library instead of standard SDL when using DGEN.

Edit your es-systems.cfg file to use this for DGEN:

COMMAND=export LD_LIBRARY_PATH=”/home/pi/RetroPie/supplementary/dispmanx/SDL12-kms-dispmanx/build/.libs”; /home/pi/RetroPie/emulators/dgen-sdl/dgen %ROM%

Worked for me anyway. I still can’t get it to fill the composite screen or exit from the controller but it’s totally playable.

[Anonymous]

Hello,

I´m new in this forum and I´m from Germany. I have the same problem with composite vieo, but with all emulators :(. But I can close dgen by pressing an controler button :).

I edit the dgenrc file in /RetroPie/configs/all/

# Quit DGen or switch to the next ROM on the command-line.
key_quit = escape
joy_quit = joystick0-button12

Find this linke and put the name of the button you want, where it says joystick0-button12.

I hope this work for you :)

[Anonymous]

I am also hunting a solution to this. I really want to play NES emu over composite output. haha.

I’ve tried the steps above, but the last step where I edit .emulationstation/es_systems.txt is probably wrong. I am confused by what is meant above.

Here is the output of es_log.txt:

lvl2: 	Attempting to launch game...
lvl2: 		/home/pi/RetroPie/emulators/linapple-src_2a/Start.sh
lvl2: 	Starting SDL...
lvl2: 	Creating surface...
lvl2: 	Resolution: 720x480...
lvl2: 	Created surface successfully!
lvl2: 	Loading theme "/home/pi/.emulationstation/nes/theme.xml"...
lvl2: 	Theme loading complete.
lvl2: 	Attempting to launch game...
lvl2: 		/home/pi/RetroPie/supplementary/runcommand/runcommand.sh 1 "retroarch -L /home/pi/RetroPie/emulatorcores/fceu-next/fceumm-code/fceumm_libretro.so --config /home/pi/RetroPie/configs/all/retroarch.cfg --appendconfig /home/pi/RetroPie/configs/nes/retroarch.cfg /home/pi/RetroPie/roms/nes/Super\ Mario\ Bros.\ 3.nes"
lvl2: 	Starting SDL...
lvl2: 	Creating surface...
lvl2: 	Resolution: 720x480...
lvl2: 	Created surface successfully!

The screen now just goes black. I’m not sure what I’ve done. haha

[karloss]

Hey Raygan Kelly,

I followed your steps, and didn’t seem to have any errors, but I still just get a black screen when trying to run my MD roms :(

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