Wii emulation performance using Vulkan on Pi4

gandalth23

I was curious to see how well Wii emulation works on RPi4 with 64 bit rpi os and Vulkan. Testing Mario Kart Wii, I achieved 17 - 19 fps.

Here's my setup:

RPIOS 64 Bit with 5.10 series kernel and kms.
Dolphin 5.0-14017 compiled from source.
To get Vulkan support, I compiled Mesa21 drivers from source.
Modest overclocking using cpu_freq=1750 and gpu_freq=600.

In Dolphin, I choose Vulkan / V3D 4.2 in Graphics and then launch the game. Playing the first round, I get around 17 to 19 fps.
Has anybody else tried this and achieved better results? If so, could you please post your settings?

Best,
gandalth

acidtech

And the video is displaying properly? Last time I checked vulkan was glitching the screen badly with Dolphin(eg mostly black with some graphics randomly). Only opengl was working properly but at 7 to 9 fps. If you have working video AND 17 to 19 fps you are doing pretty good. Your overclock can go higher(both gpu and cpu). Have you tried playing with that to see if there is any noticeable improvement?

gandalth23

I know what you mean by the glitches. About half a year ago, I saw heavy flickering and distortion. But that is not present any more, the video is now smooth.

I have made a few updates in between (both on dolphin and the mesa drivers, but no improvement so far. I haven't tried more heavy overclocking yet.

Best,
gandalth

WODAK

@gandalth23 maybe check this video:

Did you try to change the resolution to 640x480?

gandalth23

The result from the video looks great, but I am not able to reproduce it.

I call lxrandr from command line and set the resolution to 640 x 480. Then I start dolphin and change to full screen mode.
I tried that with both vulkan and opengl. In both cases, I see stuttering and frame rates between 17 and 22 fps. My impression is that the game ran slightly better using opengl.

Did anybody else try to reproduce the video's result?

Best,
gandalth

quicksilver

@gandalth23 are you racing with AI racers on the track? I noticed that the person in the video is just running a time trial which means it's only one racer on the track.

gandalth23

You"re right, I noticed that too and also tried a "Time Trial" race. However, I didn't see any difference to the actual race.

The only difference I have on my system is a newer dolphin (git pull from May 8) and newer mesa drivers (git pull from May 8). I am currently assuming that doesn't hurt performance, but of course I cannot be sure. I will double check when I have time.

WODAK

@gandalth23 said in Wii emulation performance using Vulkan on Pi4:

You"re right, I noticed that too and also tried a "Time Trial" race. However, I didn't see any difference to the actual race.

The only difference I have on my system is a newer dolphin (git pull from May 8) and newer mesa drivers (git pull from May 8). I am currently assuming that doesn't hurt performance, but of course I cannot be sure. I will double check when I have time.

I tried to install the latest dolphin from git. I can't run any game because there is always showing an error about OpenGL support.

I already tried with the solution

nano ~./config/dolphin-emu/GFX.ini 

Find this -> [Settings]

Under it type this
PreferGLES = True

hit CTRL + X
hit Enter

but it didn't help. Seems like something's messed up :/

gandalth23

@WODAK I use this setting too and it does work.
I remember that it did not work on older version of dolphin.

What revision do you have? Mine is 14109.

Best,
gandalth

WODAK

@gandalth23 said in Wii emulation performance using Vulkan on Pi4:

@WODAK I use this setting too and it does work.
I remember that it did not work on older version of dolphin.

What revision do you have? Mine is 14109.

Best,
gandalth

Mine is 14122...

How did u install Dolphin? I used this script:

sudo apt install git cmake pkg-config gcc libwxbase3.0-dev libwxgtk3.0-dev libgtk2.0-dev libxext-dev libreadline-dev libgl1-mesa-dev libevdev-dev libudev-dev libasound-dev libpulse-dev libao-dev libopenal-dev libavcodec-dev libavformat-dev libswscale-dev libenet-dev liblzo2-dev libminiupnpc-dev libmbedtls-dev libsoil-dev libsoundtouch-dev libsfml-dev libusb-1.0-0-dev libbluetooth-dev libxrandr-dev qtbase5-private-dev
git clone https://github.com/dolphin-emu/dolphin.git dolphin-emu 
cd dolphin-emu

mkdir build && cd build
sudo cmake ..
sudo make install

and my uname

pi@raspberrypi:~ $ uname -a
Linux raspberrypi 5.10.17-v8+ #1414 SMP PREEMPT Fri Apr 30 13:23:25 BST 2021 aarch64 GNU/Linux

gandalth23

I think your installation is correct.

Can you try installing vulkan drivers from source? I used this guide:
https://qengineering.eu/install-vulkan-on-raspberry-pi.html

Best,
gandalth

WODAK

@gandalth23 said in Wii emulation performance using Vulkan on Pi4:

I think your installation is correct.

Can you try installing vulkan drivers from source? I used this guide:
https://qengineering.eu/install-vulkan-on-raspberry-pi.html

Best,
gandalth

I did....and most of games are lagging....some of games are running good....
Did you try Mario Kart - double dash? I am always getting some kind of blue screen fog...could you also try it? The game is running fine....just this blue screen is getting me mad....

gandalth23

I confirm the behavior for Mario Kart Double Dash.

In your other thread you seem to have found a solution for Mario Kart Double Dash. What exactly is the fix? Using that fork of dolphin or the Gecko codes you provided?

Best,
gandalth

WODAK

@gandalth23 said in Wii emulation performance using Vulkan on Pi4:

I confirm the behavior for Mario Kart Double Dash.

In your other thread you seem to have found a solution for Mario Kart Double Dash. What exactly is the fix? Using that fork of dolphin or the Gecko codes you provided?

Best,
gandalth

The solution to get rid of the blue fog screen is to install the Ishiiruka version of dolphin....