Daphne shows screen tearing on Raspi 3B with RetroPie 4.4

[DougA]

@Clyde Retropie does not use OpenGL. The following text is from the RetropPie setup wiki

"The OpenGL driver for the Raspberry PI VideoCore GPU was introduced to provide hardware accelerated OpenGL for the X11 OpenGL applications, during the Raspbian Jessie version.

RetroPie - and the underlying components - are not using the X11 server for display, enabling the OpenGL driver will not add any features or benefits for the system."

[grant2258]

@clyde if the video is ripped from pal it will be 50fps ntsc will be 60fps The blend command line option is in the code not sure if its gl only though. Again test daphne in windows see if the results are any better if ist not it will be the encoding.

here is the -blend option from the code it is there

// handles VLDP-specific command line args
bool ldp_vldp::handle_cmdline_arg(const char *arg)
{
bool result = true;

if (strcasecmp(arg, "-blend")==0)
{
	g_filter_type |= FILTER_BLEND;

im not sure is it gl only just test it and see if it works. I would have to look through the code to see whats going on there. ive only tested hypseus on my x86 debian box

[Clyde]

@grant2258 I don't have Windows, so I can't test it in Windows. But I could test it in the Kubuntu Linux on my PC and Laptop. I mean, I will test it as soon as I have the time. Alas, that won't be this week or the coming weekend.

As for OpenGL … I wonder if there's an OpenGL driver in the Raspbian repos that isn't dependant on X11. I may dive deeper into this topic on the web, unless you or someone else here knows for sure that there isn't a non-X11 driver, of course.

Hm … on second thought, is it possible to start a small Xserver from Emulation Station with just Daphne in it and with OpenGL support? Yes, that would be a big effort for a small benefit (no screen tearing), but I always were a "because I can" type of guy. ;) And I know such dedicated Xservers from the past as solutions for other game-related problems, e.g. if a game doesn't like the main desktop resolution or other settings.

One last thing, the CLI options -nohwaccel and -opengl mention hardware acceleration in YUV mode of Daphne. Does anyone know more about this mode (it seems to be the standard mode in Daphne, since -opengl is there to disable it) and what its requirements are to use hardware acceleration?

[grant2258]

@clyde said in Daphne shows screen tearing on Raspi 3B with RetroPie 4.4:

were

not quite sure what your asking here opengl is the hw acceleration. I dont think anyone is going to take on this project for one emulator unless you want to do it yourself.

if your interested in taking this project one look here https://benosteen.wordpress.com/2012/04/27/using-opengl-es-2-0-on-the-raspberry-pi-without-x-windows/ that a good guide for you to get started on it.

[grant2258]

to be honest it is a bit concerning and surprising that the retropie daphne repo is supplying copyright material in daphne at https://github.com/RetroPie/daphne-emu/tree/retropie/sound i dont know if this is an oversight in there part or not.

[mediamogul]

@grant2258

Professionally, I've never been directly involved with the legality of distributing samples, but I believe it may fall under fair use depending on the length. Of course, Skywalker Sound brings in a king's ransom every year from officially licensing their libraries, so I don't know. It may only count as fair use if it's trans-formative in some way.

[grant2258]

@mediamogul said in Daphne shows screen tearing on Raspi 3B with RetroPie 4.4:

@grant2258

Professionally, I've never been directly involved with the legality of distributing samples, but I believe it may fall under fair use depending on the length. Of course, Skywalker Sound brings in a king's ransom every year from officially licensing their libraries, so I don't know. It may only count as fair use if it's trans-formative in some way.

not quite sure how it all works just making sure its know that these samples are there in the reop in case it has just been an oversight.

[Clyde]

@grant2258 said in Daphne shows screen tearing on Raspi 3B with RetroPie 4.4:

not quite sure what your asking here opengl is the hw acceleration. I dont think anyone is going to take on this project for one emulator unless you want to do it yourself.

I'll try to explain what I mean. The description of -nohwaccel says, "Disables hardware acceleration when in YUV mode." – So, there's a YUV mode that has hw acceleration under certain circumstances.

The description of -opengl says, "Uses OpenGL hardware acceleration instead of hardware YUV overlays." – So, YUV and OpenGL are exclusive, but both provide hw acceleration.

Thus, I wonder what hw accelerated YUV is and what it needs for hw acceleration, if not OpenGL.

if your interested in taking this project one look here https://benosteen.wordpress.com/2012/04/27/using-opengl-es-2-0-on-the-raspberry-pi-without-x-windows/ that a good guide for you to get started on it.

Thanks, I'll look into that as well.

[grant2258]

ok you seem to know what your doing so ill do you a solid here is how to compile and test

cd ~

sudo apt-get install libsdl2-ttf-dev
sudo apt-get install libsdl2-image-dev
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

git clone https://github.com/grant2258/hypseus.git
cd hypseus/

mkdir build
cd build
cmake ../src
make -j4

cp ../doc/hypinput.ini /opt/retropie/emulators/daphne/
mkdir /opt/retropie/emulators/daphne/fonts
cp ../fonts/default.ttf /opt/retropie/emulators/daphne/fonts/
cp hypseus /opt/retropie/emulators/daphne/

press f4 to get to command line you need to out of emulationstation for now to test

/opt/retropie/emulators/daphne/hypseus lair2 vldp -framefile /home/pi/RetroPie/roms/daphne/lair.daphne/lair.txt -useoverlaysb 2

use keyboard for now or set the joystickup in hypinput.ini

note this is beta if i missed and instructions let me know its just quick rough guide for you

[grant2258]

@grant2258 said in Daphne shows screen tearing on Raspi 3B with RetroPie 4.4:

gh guide

if your happy with it all the retropie configuration to run it. im not sure if retropie 4.4 supports sdl2_opengles youll need to ask someone at retropie headquarters if they support this or have and intentions too. it runs very nice on a debian x64 :)