MKDD Tint Issue RPI5

AwesomeKingClem

Here are some new links that could also prove useful. I have a good feeling on the RasPi Forums thread.

https://forums.raspberrypi.com/viewtopic.php?t=327210
https://forums.dolphin-emu.org/Thread-vulkan-back-end-broken-latest-dev-builds-perhaps-by-newest-amd-drivers
PDF with a VERY LONG link (Do not use this PDF if you don't trust it. I don't blame you..)

TPR

@AwesomeKingClem said in MKDD Tint Issue RPI5:

I reinstalled retroarch from source after editing the retroarch.sh file to show the option for vulkan.

Can you please post the edit you made to the retroarch.sh file? Sounds like this is something I need to do. Thank you.

AwesomeKingClem

@TPR
Sure, just give me a couple hours.

Edit: Here ya go.
https://pastebin.com/FXLMdm9s

TPR

@AwesomeKingClem Thank you!

gvx64

@AwesomeKingClem I apologize for bumping this thread but I can confirm that this missing dual source blend + missing GL_EXT_shader_framebuffer_fetch issue in dolphin seriously impacts the Pi4 as well (not just Pi5 users). And it's not just Mario Kart and RE4 that are impacted, Metroid Prime is basically unplayable because the map screen is totally blacked out and Mario Golf Toadstool Tour is also basically unplayable because the golfers are all invisible.

It is very frustrating because the custom dolphin-4,0-5024 build that I got running on 32-Bit Buster played both of these games very nicely. Really, any build before 5.0-1653 would work as that was when the Dolphin devs removed the Alpha Pass feature which is what caused this problem in the first place. Unfortunately, Bookworm doesn't let you compile anything using anything below g++-11 and so it is very hard to get these old dolphin builds to work properly. Heck, even on Bullseye I have no issues compiling dolphin-4.0-9508 with g++-9 and it performs amazingly well. On Bookworm, though, it's a mess. Even after debugging all of the errors due to the standards changes introduced in g++-11, there are still major performance issues that make it unusable on Bookworm and I have no idea what the cause of that is. It also happens to be pretty much impossible to compile an older gcc version on Bookworm for some insane reason (if anybody knows how to do this, please let me know, I have spent weeks trying to get gcc-9 built and I almost broke my build trying to address the compiler errors). Maybe another possible route we can investigate to getting this problem fixed is to ask Debian to upload gcc-9 or even 10 to the apt-get repositories for Bookworm. I really believe that we could get gcc-9 on Bookworm, we could get a very playable experience using the dolphin-emu-5.0 stable build on the Pi4 and Pi5.

Anyways, this problem is very frustrating because there is basically no solution on Bookworm. I am not sure how motivated the Dolphin devs are about assisting Pi users by fixing this glitch and I am not sure if Mesa devs are going to be able to add the missing GL Extensions to the Pi's drivers that easily. Nonetheless, this glitch is very severe as it severely hampers the playability of some of the most popular Gamecube games on the Pi4 and Pi5.

gvx64

@gvx64 Hello, I just wanted to provide another update. I was able to find a solution that at least works for my needs in playing Metroid Prime and Mario Golf. I could use your help with testing on the Pi5 and with the games that I do not own (RE4, Mario Kart). I have forked a build of dolphin on Github and pushed the necessary modifications (build instructions below). The solution that I came up with was to modify an old version of dolphin-5.0-4544 (June 2017) that allows me to run these impacted games without rendering problems on Bookworm using the Vulkan video backend (GLES 3.1 does not work properly on Bookworm in this build). What I am doing is running this modified, legacy version of dolphin in parallel with a current build on my Pi4, where I am using this older build as a separate emulator in emulationstation for the games that don't run properly on the current build of dolphin.

Instructions for Building from Source

cd /home/pi
sudo mkdir ./dolphin-rpi/
sudo git clone https://github.com/gvx64/dolphin-rpi
cd ./dolphin-rpi
git submodule update --init --recursive

Edit CMakeLists.txt options if needed. I turned off/on the following flags in the CMake file by default (you may want pulseaudio turned on for your machine):

USE_UPNP turned off
ENABLE_PULSEAUDIO turned off
ENABLE_ANALYTICS turned off
ENCODE_FRAMEDUMPS turned off
ENABLE_QT2 turned on

sudo nano ./CMakeLists.txt

If you haven't already done so, you may want to add the following packages:

sudo apt-get install libevdev-dev libgtk2.0-dev libopenal-dev qtbase5-private-dev

Also, make sure that Vulkan is installed on your Pi if you haven't already done so before proceeding further.

Now lets configure:

mkdir Build
cd ./Build
sudo cmake .. -DCMAKE_C_COMPILER=gcc-11 -DCMAKE_CXX_COMPILER=g++-11

(note that you may need to sudo apt-get install gcc-11 and g++-11 if you don't have them installed by default on Bookworm)

Finally build (this will take a while):

sudo make -j4

(note that if you encounter errors you should rebuild with -j1 as the error messages are sometimes a lot more descriptive when building with single core for some reason)

EDIT: Optional step although possibly not recommended. This will put config/settings files in potentially inconvenient locations. I personally skip this step and just create my own config directory and specify its location with the "-u" option in the emulators.cfg file.

sudo make install

Anyways, assuming that there are no errors (please let me know if there are), this should get you three dolphin binaries in the ../Build/Binaries folder. You can add them to your /opt/retropie/configs/gc/emulators.cfg list the way that I have done. Note that I have set up both entries that can launch games from es as well as entries that are intended for settings configuration and that will only take you to the gui screen. As discussed below in posts 80-84, if you would like to enable hotkeys, please setup your hotkeys using the hotkey-configure option below and note that in order for hotkeys to work you will need to launch your games using the dolphin-5.0-4544 core (the nogui core does not support hotkeys):

dolphin-5.0-4544-nogui = "XINIT-WM: /home/pi/dolphin-rpi/dolphin-rpi/Build/Binaries/dolphin-emu-nogui -e %ROM% -u /home/pi/DolphinConfig5.0/"
dolphin-5.0-4544 = "XINIT-WM: /home/pi/dolphin-rpi/dolphin-rpi/Build/Binaries/dolphin-emu -e %ROM% -u /home/pi/DolphinConfig5.0/"
dolphin-5.0-4544-configure = "XINIT-WM: /home/pi/dolphin-rpi/dolphin-rpi/Build/Binaries/dolphin-emu -u /home/pi/DolphinConfig5.0/"
dolphin-5.0-4544-configure-hotkeys = "XINIT-WM: /home/pi/dolphin-rpi/dolphin-rpi/Build/Binaries/dolphin-emu-qt2 -u /home/pi/DolphinConfig5.0/"

Note that I specified a separate configuration directory using the -u option. You can make a copy out of the files ../Data/Sys/ directory and Note that when playing games it is essential to only use the Vulkan backend for this build.

Background:
Anyways, I have provided some optional technical details below for general knowledge.

The problem in resolving this issue in Bookworm is two-fold:

Current builds of dolphin have the above-discussed rendering problem in Bookworm (Mario Golf - invisible characters, Metroid Prime - invisible map screen, Mario Kart - screen tint, Resident Evil 4 - screen tint ). This is due to the removal of alpha pass support in dolphin. In fact, all dolphin builds after 5.0-1653 (Jan 2017) have the alpha pass feature removed where the code falls back on a shader implementation (either dual source blending or GL_EXT_shader_framebuffer_fetch) that is not supported on the Pi4 or Pi5. I tried my best to patch a workaround for Pi users into a recent version of dolphin but it is simply beyond my abilities. Maybe somebody with experience in shader programming can take a crack at it, but it may not be a simple solution (honestly, given that it has been an open issue for almost a year, the dolphin devs probably would have already implemented it by now if it was simple).
The next obvious option is to fallback on an older build of dolphin (e.g. 5.0-1651) that still has the alpha pass feature. This solution actually works really well if you are using Buster or Bullseye but for some extremely weird reason that I cannot understand, GLES 3.1 support in dolphin on Bookworm is severely impeded on all legacy builds prior to 5.0-9638 (when the GL backend got largely harmonized with Vulkan). Before 5.0-9638 when running GLES on Bookworm, I found that the gameplay chugs down to around 1-3 fps. That said, Vulkan works great on Bookworm on builds even prior to 5.0-9638 but this leads to yet another problem: Vulkan was first introduced in 5.0-748 which is only a few months before alpha pass was removed. At the time of 5.0-1651, Vulkan support on Dolphin was still in its infancy and is really not a usable video backend.

Anyways, after a ton of trial and error, I decided to take a commit around 5.0-4544 and then patched the alpha pass feature from 5.0-1651 back into the code. I also rolled-forward the build with the changes detailed in 5.0-13671 which resolves many of the compiler errors that are experienced when building an old version of dolphin on gcc-11. I specifically chose 5.0-4544 because it was a balance between giving the Vulkan backend sufficient time to mature while not being so far past the time that alpha pass was removed that back-patching becomes difficult (by the time of 5.0-6000 there were enormous changes made to the video-backend code that makes reintroducing alpha pass beyond my abilities).

Anyways, using this modified version of 5.0-4544 I can now play Metroid Prime and Mario Golf using the Vulkan backend and they both run quite well on the Pi4 with no rendering problems (GLES is a still a broken mess for reasons I discussed above, but I don't really need it to play these games so it is OK). Resident Evil 4 and Mario Kart are not a part of my library and so I cannot test these two. I also do no own a Pi5 (only Pi4's) and so I cannot confirm that my solution will resolve the problem for these users but I suspect that it should work. If somebody would like to help me with the testing of my proposed solution, I would be appreciative.

sugarfree

@gvx64

Thank you very much for working on this!

I'm trying to test it with RPi5 but I'm getting the following error:

pi@retropie:~/dolphin-rpi/Build $ sudo cmake .. -DCMAKE_C_COMPILER=gcc-11 -DCMAKE_CXX_COMPILER=g++-11

CMake Warning (dev) at CMakeLists.txt:10 (set):
  implicitly converting 'string' to 'STRING' type.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- The C compiler identification is GNU 11.3.0
-- The CXX compiler identification is unknown
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/gcc-11 - skipped
-- Detecting C compile features
-- Detecting C compile features - done
CMake Error at CMakeLists.txt:12 (project):
  The CMAKE_CXX_COMPILER:

    g++-11

  is not a full path and was not found in the PATH.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


-- Configuring incomplete, errors occurred!
See also "/home/pi/dolphin-rpi/Build/CMakeFiles/CMakeOutput.log".
See also "/home/pi/dolphin-rpi/Build/CMakeFiles/CMakeError.log".

Logs:

CMakeError.log

Checking whether the CXX compiler is IAR using "" did not match "IAR .+ Compiler":
Checking whether the CXX compiler is IAR using "" did not match "IAR .+ Compiler":

CMakeOutput.log

The system is: Linux - 6.6.31+rpt-rpi-v8 - aarch64
Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded.
Compiler: /usr/bin/gcc-11 
Build flags: 
Id flags:  

The output was:
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Compilation of the C compiler identification source "CMakeCCompilerId.c" produced "a.out"

The C compiler identification is GNU, found in "/home/pi/dolphin-rpi/Build/CMakeFiles/3.25.1/CompilerIdC/a.out"

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gvx64

@sugarfree Thanks for helping me with the testing. Does this error occur when you run cmake? It looks like you might not have gcc-11 installed on your Pi. Did you try:

sudo apt-get install gcc-11 g++-11

On the Pi4, Bookworm has gcc-12 installed by default but gcc-11 is available in the apt-get repository and is easily installed. I am hoping that it is the same on the Pi5.

sugarfree

@gvx64 Yes, i have installed this packages, thanks.

gvx64

@sugarfree Don't forget about g++-11 too (sorry, I added it in an edit just a moment ago).

sugarfree

@gvx64 Yes, this is what was missing.

Update: Building completed successfully.

roslof

@sugarfree said in MKDD Tint Issue RPI5:

@gvx64 Yes, this is what was missing.

Compiled fine for my Pi 5 without error.

Running the binary yielded this error dialog:

Dolphin-emu Error
Failed to load image from file "/usr/local/share/dolphin-emu/sys/Resources/dolphin_logo@2x.png".

So I did two (2) things:

Created a symlink in /user/local/share with sudo ln -s ~/dolphin-rpi/Data dolphin-emu
Renamed the Sys folder in ~/dolphin-rpi/Data to sys (note lowercase "s")

That seems to have worked for now.

5.0 doesn't support .rvm GC files, so I'm looking for the alternative formats (elf, dol, gcm, iso, tgc, wbfs, ciso, gcz, wad or dff) and will report back.

roslof

@roslof said in MKDD Tint Issue RPI5:

5.0 doesn't support .rvm GC files, so I'm looking for the alternative formats (elf, dol, gcm, iso, tgc, wbfs, ciso, gcz, wad or dff) and will report back.

@gvx64 Okay, found a Mario Kart Double Dash iso that worked. Had to switch to Vulkan in the Dolphin GUI and it ran. Poorly. Below framerate in all cases, but rendered fine in 1P / 2P modes.

But the 4-player camera mode rendered dark and unplayable.

But no blue tint, so there's that. :)

sugarfree

I have built the binaries, but I can't figure out how to launch them. I'm sure I'm missing something. GameCube ROMs don't appear in EmulationStation. Do I need to install Dolphin emulator from the experimental packages?

i have manually create the
configs/gc/emulators.cfg file :

olphin-5.0-4544-nogui = "XINIT-WM: /home/pi/dolphin-emu-5.0-4544/dolphin-emu/Build/Binaries/dolphin-emu-nogui -e %ROM% -u /home/pi/DolphinConfig5.0/"

gvx64

@roslof It is disappointing to hear that it is running below 100% with Vulkan on a Pi5. What kind of FPS are you getting? Have you tried lowering the CPU override value below 100% to get a higher FPS? Also, this old version of dolphin still has the disable External Framebuffer option available which is useful in some games for getting higher performance (and it resolves a major bug in Baten Kaitos without having to turn off dual core support that cannot be done in current builds of dolphin). Maybe a dumb question but did you make sure that Vulkan is using V3D and not that llvmpipe software renderer mode? I am able to get fairly playable experiences in Metroid Prime and Mario Golf on my overclocked Pi4 with this build using Vulkan (albeit with CPU override factors down around 0.6) and so I was expecting better results than this on the Pi5.

@sugarfree I recommend first compiling a current build of standalone dolphin using your RetroPie Setup menu to launch the install script. This will create the emulators.cfg file and associated directories for you. Then you just need to add the additional line that I included above for this old version of dolphin. This build of dolphin is very old, you will for sure want to have a current build as a default emulator on your Pi for playing games that do not have rendering issues due to this alpha pass problem.

@roslof Thanks, that's a good solution. Typical procedure is to run "sudo make install" as a final step after building but this copies configuration/settings files to a bunch of inconvenient locations (root directory, /usr/local/share directory, etc). Doing that might resolve this error, but after building hundreds of legacy versions of dolphin on my Pi I generally don't do this step. Alternatively, you can use the no-gui binary and then non-significant error messages like these will only get printed in the terminal but will not impact gameplay. I prefer the no-gui build as I find it runs slightly faster (~5%) which matters a lot on the Pi4.

roslof

@gvx64 said in MKDD Tint Issue RPI5:

@roslof It is disappointing to hear that it is running below 100% with Vulkan on a Pi5. What kind of FPS are you getting? Have you tried lowering the CPU override value below 100% to get a higher FPS? Also, this old version of dolphin still has the disable External Framebuffer option available which is useful in some games for getting higher performance (and it resolves a major bug in Baten Kaitos without having to turn off dual core support that cannot be done in current builds of dolphin). Maybe a dumb question but did you make sure that Vulkan is using V3D and not that llvmpipe software renderer mode? I am able to get fairly playable experiences in Metroid Prime and Mario Golf on my overclocked Pi4 with this build using Vulkan (albeit with CPU override factors down around 0.6) and so I was expecting better results than this on the Pi5.

Thanks for the questions and support!

TLDR; Mario Double Dash! yielded much better results after starting from scratch (clean/reinstall). Single Player is at or around 60FPS with dips. Multiplayer is sluggish (2P) and unplayable (4P).

So I went ahead and cleaned everything up and started from scratch. Seems that my configs were out of sorts on the first run.. I created another emulator entry for initial testing so I could use hotkey functions and go back and forth between game and GUI:

dolphin-5.0          = "XINIT-WMC: /home/pi/dolphin-rpi/Build/Binaries/dolphin-emu       -e %ROM% -u /home/pi/DolphinConfig5.0/"

I found it nice using 'WMC' along with setting an exit hotkey chord and running with the "fullscreen" display option checked. I could then view the game perfectly (no frame) and still exit to the GUI

On this run, using Mario Double Dash!: running a Pi 5 stock speeds (no overclocking anything)* running Vulkan w/V3D 7.1.7, default rendering options for now.

FPS typically at 60 with dips no lower than 54FPS
2 Player Split Screen is under framerate a bit most of the time (better with no-gui as you called out)
4 Player Split Screen is unplayable (speed and bad render)

Will play around with settings and maybe overclocking to see how far 2P mode can be pushed, but 4P is a loss.

sugarfree

Great news! I hope to be able to run Resident Evil 4 correctly and to summarize gvx64 work into a scriptmodule.

retropieuser555

@sugarfree nice, have you got your script or uploading a PR up to RetroPie Setup or Extras?

sugarfree

@retropieuser555 "I haven't tried it yet, but if I find a way to do it, I will post it in the retropie-extra repo of course.

gvx64

@sugarfree Yes, thank you for doing that. You should be able to modify the existing dolphin.sh experimental script module fairly easily to create a new build script for this old version by adapting the build steps that I provided above (note that I edited the build instruction post yesterday to correct some of the errors and omissions in my original instructions). One thing to make sure of is that Bookworm users know to only use the Vulkan backend with this build (That said, GLES should work fine for Pi4 users with Bullseye and Buster 64-Bit).

@roslof Thank you for the feedback and the detailed information on the performance of MKDD. It's too bad about the 4p mode but I am happy to hear that at least 1p is playable with 2p possibly being playable with setting optimization.

Has anybody tested Resident Evil 4 yet? I am curious to know if this game is playable on the Pi5 using this build.