SDL-dispmanx + EmulationStation

[twolife]

Hi there !

I'm using you patched SDL on my Pi & i have (so far ;) ) only found a glitch on 1 app : https://github.com/Aloshi/EmulationStation

The simplified codeflow looks like :

SDL_init
*initialize EGL/GLES surface*
...
*destroy EGL/GLES surface*
SDL_exit
system(start_an_emulator)
SDL_init
*initialize EGL/GLES surface*
...

The problem is that there is a not-really-cool exit(0) in DISPMANX_VideoQuit @ src/video/dispmanx/SDL_fbvideo.c , so it never start the emulator :(

I tried to remove the exit(0), the emulator started correctly, but on the exit i only had garbage on the screen.

If i simply remove the SDL_exit call from EmulationStation, it works flawlessly ; but i suppose the proper fix is to keep it & fix the libSDL

Regards,

[kalehrl]

Hi twolife
I have the same problem - I can't start an emulator with emulationstation using dispmanx.
Can you tell me what lines and in what file did you change in emulationstation to get it working with dispmanx?
Thank you

[twolife]

@kalehrl : src/Renderer_init_rpi.cpp, line 182, you need to comment out "SDL_Quit();"
it's a ugly hack, I insist to repeat that the proper fix is to fix the dispmanx backend in libsdl.

[kalehrl]

Thank you very much for your quick reply!
I'm now recompiling it. :)

[kalehrl]

It works this way.
Have you noticed any side effects?

[kalehrl]

Advmame doesn't seem to work with dispmanx and started via emulationstation.
I only get black picture while the sound works fine.
Snes9x and dgen work fine via emulationstation.
Also, after exiting emulationstation, keyboard doesn't work and I have to restart raspi.
I think I will abandon it and start the games through a simple script in console.

[adskiremote]

Hi Kalehrl did you get any further wiith this? I installed dispmanx toget DGen working. Then the same as you,problems in ES.

I haven't tried the SDL_Quit() hack yet thought I'd see if there had been any updates.

[kalehrl]

No, but somebody else seems to have found a solution:
https://github.com/petrockblog/RetroPie-Setup/issues/155#issuecomment-16653623
I haven't tried it though.

[adskiremote]

Thanks - I shall give the fix a try. Unfortunately I did a make install
and wrote over the original SDL. Breaking RetroArch and pretty much
everything else.

Will try a fresh start and comile everything again, let you know how I get
on.

I suppose I could save myself all the hassle and plug in my TV that's HDMI
compatible. But I refuse to do so and like the 'retro-ness' of composite
video ;-)

On 5 May 2013 15:21, kalehrl [email protected] wrote:

No, but somebody else seems to have found a solution:
petrockblog/RetroPie-Setup#155https://github.com/petrockblog/RetroPie-Setup/issues/155#issuecomment-16653623
I haven't tried it though.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/1#issuecomment-17448429
.

[kalehrl]

You can get back the default SDL installation quite easily.
Just reinstall libsdl1.2-dev and libsdl1.2debian.

[adskiremote]

really? Oh great was just about to waste another entire weekend building
and testing ;-)

Thank you for that - you've saved me a lot of time.

On 7 May 2013 00:30, kalehrl [email protected] wrote:

You can get back the default SDL installation quite easily.
Just reinstall libsdl1.2-dev and libsdl1.2debian.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/1#issuecomment-17495501
.

[joolswills]

This might be of interest - http://www.raspberrypi.org/forums/viewtopic.php?f=38&t=99822