@plimbs and all. I had succcess. I resinstalled a RPI3 with the latest RetroPie image on it. It turned out that vc4-fkms-v3d has to be enabled in the boot config:
Open /boot/config.txt and scroll all down.
Then remove the # before dtoverlay=vc4-fkms-v3 to enable it,
safe file, reboot:
...
[all]
dtoverlay=vc4-fkms-v3d
...
It should not be needed to recompile scummvm. I built it with
--opengl-mode=gles2 --force-opengl-game-es2
but I assume
--opengl-mode=auto --force-opengl-game-es2
will also work. Maybe you can confirm which configure switches worked for you @plimbs .
Here is my ScummVM start output:
/opt/retropie/emulators/scummvm/bin/scummvm --fullscreen --joystick=0 --gfx-mode=hq3x --extrapath=/opt/retropie/emulators/scummvm/extra --path=The Longest Journey tlj
Virtual keyboard pack 'vkeybd_default' loaded successfully
User picked target 'tlj' (engine ID 'stark', game ID 'tlj')...
Looking for a plugin supporting this target... Stark
INFO: OpenGL Vendor: Broadcom
INFO: OpenGL Renderer: VC4 V3D 2.1
INFO: OpenGL Version: 2.1 Mesa 19.3.2
INFO: OpenGL Red bits: 8
INFO: OpenGL Green bits: 8
INFO: OpenGL Blue bits: 8
INFO: OpenGL Alpha bits: 8
INFO: OpenGL Z buffer depth bits: 24
INFO: OpenGL Double Buffer: 1
INFO: OpenGL Stencil buffer bits: 8
INFO: GLEW Version: 2.1.0
INFO: GLSL version: 1.20
INFO: OpenGL Vendor: Broadcom
INFO: OpenGL Renderer: VC4 V3D 2.1
INFO: OpenGL Version: 2.1 Mesa 19.3.2
INFO: OpenGL Red bits: 8
INFO: OpenGL Green bits: 8
INFO: OpenGL Blue bits: 8
INFO: OpenGL Alpha bits: 8
INFO: OpenGL Z buffer depth bits: 24
INFO: OpenGL Double Buffer: 1
INFO: OpenGL Stencil buffer bits: 8
INFO: GLEW Version: 2.1.0
INFO: GLSL version: 1.20
... and then the magic starts :)
TLJ starts and runs smooth in the cutscenes and in the game (just started a game and walked around and examined the scenery a bit).
Epilog: You may note that emulationsstation won't start any more ("greets" you with the (infamous) "already in use?" question (can't recall the exact message from my memory), but this can be easily remediated:
pi@retropie:~ $ cd RetroPie-Setup/
pi@retropie:~/RetroPie-Setup $ sudo ./retropie_packages.sh emulationstation
Other things I did, but I assume they are unrelated:
Did update to latest RetroPie-Setup Script
Did update all Raspian Packages
Installed libglew headers for ./configure of scummvm: apt-get install libglew-dev
HTH
PS: However, I installed a minimal RetroPie (ES and ScummVM). I did not test other emulators. I can not tell what possible knock-on effects the vc4-fkms-v3d enabling may have.
Maybe someone of the community can chime in why vc4-fkms-v3d is initially disabled at RetroPie?
Thanks
