Rasberry pi and msu-1

Hey, i got a question. Is rasberry pi a good way to play msu-1 games? Will it play it without lag? Does it allow save state without a screw up? Right now i play msu-1 on my soft mod wii, which i like, but it doesnt save state msu-1 right and the amount i use my soft mod wii i am wearing down my controllers and a new wii pro controller is $80 right now, so i am looking for a new option. Also, if someone does recomend, what is a good guide to follow how to set up a rasberry pi to play all the fun old games as well as msu-1?

JUD6MENT wrote:Hey, i got a question. Is rasberry pi a good way to play msu-1 games? Will it play it without lag? Does it allow save state without a screw up? Right now i play msu-1 on my soft mod wii, which i like, but it doesnt save state msu-1 right and the amount i use my soft mod wii i am wearing down my controllers and a new wii pro controller is $80 right now, so i am looking for a new option. Also, if someone does recomend, what is a good guide to follow how to set up a rasberry pi to play all the fun old games as well as msu-1?

Oh yes, It does great with MSU1 games, that is how I have played them. Now the game that I had ran into issues with was kirby 3 because my power supply was underpowered, but it did struggle with SA-1, but I have heard it has gotten better. Yes you can use save state state, Retroarch allows for that. The program needed is retropie and an SD Card, the kind theat you use for video cams and smart phones, I would say at least 64 GB because of the size of MSU games. I have a ton of info for you, check your PM.

I found this info, maybe it helps
https://retropie.org.uk/forum/topic/13144/snes-msu-1-guide/2

Conn wrote:I found this info, maybe it helps
https://retropie.org.uk/forum/topic/13144/snes-msu-1-guide/2

Nice I was just about to post this also lol. This is great Jud6ment for MSU1, I had used this also. Well done Conn

Thanks so much Polar and Conn. One question Polar, would a regular size SD card work or does it need to be a micro sd card? Im ok with investing in a micro if needed but I already own a regular size 64 gb sd card that I was hoping to use.

JUD6MENT wrote:Thanks so much Polar and Conn. One question Polar, would a regular size SD card work or does it need to be a micro sd card? Im ok with investing in a micro if needed but I already own a regular size 64 gb sd card that I was hoping to use.

It needs to be a micro sd card. Thats is the only way it will work for a raspberry pi because thats how big the slot is for it.

The author of this article, edale is also a member here,
https://www.zeldix.net/u1196

maybe you want to write him a pm, or he will read this and give you further advice

Polar sent me a pretty detailed message of how to do a retropie so i think i am set once i buy the stuff.

(Trolls Reply)

1. Get the "Stretch 4.4" image from the "github" link, not the "United Kingdom" link, 128 GB Card will perform better on the Retropie 3B+ (it does detect the performance of the card) ... ("odroid ux4", a good performing card will increase emulator performance, only load times with Retropie, not emulator performance.

2. After Controller Setup, set CPU to Performance, from (main menu/emulationstation menu) "Retropie/Raspi-Config".  Also enable SSH that enables FTP from your computer, (i usually set username/password to "pi", during setup. (5. Interfacing Options) ................ (Set the region of your keyboard, 4. Localization Options, the default pal layout, changes some keys you press)

3. Don't update firmware, or run "sudo apt-get update", or "sudo apt-get upgrade" by pressing F4 from your keyboard to bring up the Terminal (commandline), or risk breaking setup! (those are suggested if you have problems) ............... (Don't expect WIFI to work, you can play with it, but the PS4 an Xbox One, controllers are supported from USB Cable)

4. "Update Install Script", before you install any emulator cores, "Retropie/Retropie Setup/"Update Retropie-Setup Script" (always update from source, and if a core doesn't build, check the github page, FOR THAT EMULATOR (some are maintained better then others), sometimes it is indicated that the "build failed", wait until it updates) ..................... (if you make the mistake of updating your "firmware", and can manually downgrade it from "terminal/commandline" by pressing F4, and entering the correct command)

5.Something you Didn't Know, and your Biggest Problem! ... ... ... ... (Retroarch is just an emulator, you can use your same setups on another device, if you want to try the "odroid ux4", everything will be the same, "gamelists", "downloaded images, for the gamelists", and rom folder, etc. ... only different would be how the controller is handled, that would have to be setup again) ... ... ... ... Most of them are straight Liars! ... ... ... ... the "lag" issue isn't a problem on the "Retropie", but you need a good quality controller like the PS4, all that other stuff is just cheap and hard to handle ... ... ... ... (Your Second Biggest Problem is Understanding what, where, and why, all the different configuration files are saved) ... ... ... ... (opt/retropie/configs/all/"retroarch.cfg" ... is your main controller configuration file) (opt/retropie/configs/all/retroarch-joypads ... has some additional settings, for controls, "REMAP REBINDS" option in retroarch, will stop this from loading, when set to "on/off" (off i think"), after loading a custom "retroarch.cfg" file for a specific game, like "Tomb Raider___retroarch.cfg" (you rename that and add it to the "retroarch folder", like that) (only had to do more advanced setups for PS1 games (all of your analog controls, you can set from the main retroarch options, just press the joystick for the button you want and then save, it will be applied to everything, unless you disable it (which will be disabled for everything) (or use a custom setup, that is, load custom retroarch.cfg file)

...................

6. Best way for SNES.  Install "lr-snes9x" from from source or binary from the retropie's options.  Then you replace the core file with the PGO's build release of "lr-snes9x", add that core file to any "rom folder" and then using the "file browser" that comes installed, copy and overwrite the file.  (browse to the file and select it then type the path in the browser where it goes, "opt/retropie/libretrocores/lr-snes9x") ... ... ... ... (blending option, speed hack option (compatible in most cases, light, or disabled if rom don't work), press button at grey box popup to change resolution to "640x480 after launch and 4:3 from retroarch options in game", stretch image from your TV) (most emulators have not performance increase from lower screen resolution, snes does on the retropie)

.....................
(save states for games are saved in the rom folder, "game options saved per game-sometimes you need those if your global option is "compatible for speed hack in snes, then if a game requires it off or to "light" you need to save "per game options", those are saved in one of the configuration folders I think)

7. Even if your Told how to Setup a Retropie? Big Deal, with no file examples your just out of luck! ... ... ... ... (its perfectly legal to share file setups/configuration files/or dummy files to illustrate the setup, but people normally don't, its noob hatred ... ... ... most people realize they have to spend a few hours after purchase to set everything up, because, a few simple facts escape them, just about everything i've said)

PS4 Controller, Retropie Config
https://drive.google.com/file/d/1KwEPZBg75PKs6POUeQ0lMX9L-KKguA_A/view?usp=sharing

(just edit the "gamelists" file and "downloaded images" so they have the same name and entry as the, roms, the "roms" in the "rom" folder, on the retropie .............. you don't need to use scrapers, so think of this as an example) (just back up those files, and your "rom" folder, and that all, you can redo everything after fresh install, very easy, if you don't want to backup more) (two versions of the default PS4 controller after install, on with no analog controls, just to set up the custom PS1 configuration files I load for some games after loading the PS1 game, I call up the retroarch menu, then load the configuration file for that game, to fix analog controls ..... after game loads to ensure the resolution is set right, at lower 640x480 after launch for performance increase in PS1, really cleans up some ps1 games like spyro)

MSU-1

(in the "gamelist" file for snes, just open it and search for "MSU" notice a "folder" entry and "game" entry are made for each "MSU" game, that is so only the folder displays on the TV, and inside that, just the rom, not all the audio files and stuff)

(the games play fine with no problems, you can check the configuration files in the link for any additional sound or driver options I set there, probably the defaults)

(Those are my shader suggestions, three shaders, but after you change settings save "per core" for all snes games, or save, "per game" for just those games) (notice I use "barrel roll", i think its called off hand to warp the screen like a "old bubble tv", "add just "super-eagle" to that, you should be fine, or just "barrel roll" ................ adding more shaders makes the image more blurry, I like this effect so I use three shaders in most emulators)

MAME NOTE*

You have to blank the name fields, because the "MAME emulators, including FBA", use their own built in "name directors", and a good deal of the time, if you add the name entry in, the rom will not detect ................. you can add the name directly for the other emulators.  (with a footnote, it was only the "g.i. joe NES" game that I had to spell with less characters to get it to identify) .............. (most of the fields in the mame games list as you can see, in the example in the pack, have blank entries, doesn't happen often but in addition to what was said, the "github developer pages", will update the "name tables built in for mame", its tedious but you need to blank all the name fields in the game list in that case to avoid errors)

*****************
There isn't much to know about the "retropie 3B+" to get it to work fine, everything you need to know is mentioned in here, in this statement.

Don't really expect better performance from the "odroid ux4", if you even care about n64 or dreamcast, don't expect good playback for those either.  (You will at least have better visuals with the "odroid ux4", if you disable "THREADED VIDEO", and play with options for lag/response .............. best to start with the retropie, because, the setup is simpler, but the other setup is also not that complicated ............... don't have file examples or, experience with retroarch, then better start with a retropie!

(the shaders in the pack are not updated for snes/MAME, not with my current settings, since i'm updating some stuff, at the moment) (its from a older backup that i shared, just a week or two, actually, i think 4 months, but i didn't do much, once you set up the retropie, you don't need to bother it!)

(SNES "lr-snes 9x" and MAME/FBA)
Shader Passes 3
Shader #0 image-adjustment.glsl
Shader #0 filter = don't care
Shader #0 scale = don't care
Shader #1 super-eagle.glsl
Shader #1 filter = don't care
Shader #1 scale = don't care
Shader #2 barrel-distortion.glsl
Shader #2 filter = don't care
Shader #2 Scale = don't care


"snes-hires-blend.glsl" was my old preference in place of "image-adjustment.glsl" ................ not only are the order in which you select the shaders important, but, the ones you pick, even if a small difference.

for Example, the difference between the two shaders, i mention above is, just noticable in in "F-Zero Snes", but in other games the different shaders are much more noticable, like with the dodonpachi games.  (essentially, "image-adjustment" is "snes-hi res blend", minus the added "blurr" effect).

(thats what makes emulation better then the original console, you can on a LCD TV, add the bubble CRT TV EFFECT, and even better, add a very slight blur, based on the shaders you pick)

probably...

all you need for snes on the raspberry to look as good as the snes on a console on a bubble tv, on a lcd tv, are these two shaders "image-adjustment and barrel-distortion". (you see this brings back all the old memories).

however, when you add "super-eagle" in the order, above, then you gain a very slight "blurr", and this is what makes, the emulation much better then the original console! (Final Fight snes is a good example of this, but any game will do)

(i'm not referring to smoothing out the jagged edges or anything like that, i'm talking about, being true to the snes) (people don't typically share their setups or their shader settings, so the community of retroarch in general is, "epic fail")


Other Shader Examples for other systems, I toiled this alot, but I only purchased the, raspberry pi 3B, and then the 3B+, to upgrade only for the SNES primarily) (my new uptoday snes shader settings, i haven't shared anywhere, my previous ones i have, but they were not good!)

(SEGA lr-genesis-plus-gx)
Shader Passes 3
Shader #0 image-adjustment.glsl
Shader #0 filter = don't care
Shader #0 scale = don't care
Shader #1 snes-hires-blend.glsl
Shader #1 filter = don't care
Shader #1 scale = don't care
Shader #2 barrel-distortion.glsl
Shader #2 filter = don't care
Shader #2 Scale = don't care
(From "options" set "Blargg NTSC Filter" to "composite, disable sprite limit)

(the same effect for the snes with a very slight blurr is obtained for the sega genesis in the above settings) (the sega can be a very ugly system, but "2xsai" in place of "snes hires blend", adds to much blurr, and "2xsai-level2" kills it with blurr)

(GAMEBOY ADVANCE)
Shader Passes 4
Shader #0 bnes_gamma_ramp.glsl
Shader #0 filter = don't care
Shader #0 scale = don't care
Shader #1 lcd3x.glsl
Shader #1 filter = don't care
Shader #1 scale = 2x
Shader #2 barrel-distortion.glsl
Shader #2 filter = don't care
Shader #2 Scale = 2x

(best I could do, again, haven't spent much time, toiling with it, but it looks great)

(NES - core lr-nestopia)
Shader Passes 2
Shader #0 2xsal-level2.glsl
Shader #0 filter = don't care
Shader #0 scale = don't care
Shader #1 barrel-distortion.glsl
Shader #1 filter = don't care
Shader #1 scale = don't care
(Blargg's Composite Color Filter from the Option of Retroarch in Game) (CPU speed 2x in options) (disable sprite limit)

(nestopia has the shader options and stuff, but its buggy and has slowdown in a lot of games) (adding any more shaders then that, really cuts performance too, the emulator needs major updates, or its can, really no reason to, toil, with the settings)

(Playstation)
Shader Passes 1
Shader #0 2xsal-level2.glsl
Shader #0 filter = don't care
Shader #0 scale = don't care

(theres no performance issues with these shaders for all emulators with the 3B+ retropie, however.  It would be better for the Playstation to have, "barrel distortion" on the PS1, but it can't perform at normal with more than one shader.  ALSO, the PS1 games were not designed for "bubble CRT tv s", and that shader will mess up some games, (looks great with the doom FPS game though) (doom PS1 is a good game to see the difference in using the "2xsai, versus the, "2xsai-level2" shader (with barrel distortion enabled), since some games are minor, actually spyro too)


(no real reason to buy a udroid ux4, instead of a retropie)

I just said that as a reminder, that if you purchase a PS4 controller, since the retropie has no issue with that, then its still less money, and your not really getting anything, since that system has bad compatibility, supposedly.  (but with, uxdroid ux4, you can disable "THREADED VIDEO", and some other options, for slightly better quality, that isn't very noticable, infact, I would go on to say, your wasting your time if your really worried about the difference in visual quality on the systems, since there isn't any, or the lag times).


.......................
(rapid fire button doesn't work with any of the "custom mapping options", either by creating a config fire in the rom folder for that, or, adding the line for the game launch at the "grey box quick launch option", for RAPID FIRE, ONLY calling up the retroarch menu in game and setting the button to use was the best option

(doing anything else requires using a different driver, and programming some stuff, there are examples to use, but I don't see a benefit, rapid fire is good for a few games, even with all the games I have setup, not worth the trouble, so, big minor inconvience)

Use only the fastest Pi, I tried for fun on a $5 Zero W and it was awful, unplayable.

Ok, so i am finally going to get a raspberry pi emulator. About a year ago Polargames suggested I buy this one off amazon, is it still the best one, or has there been a better model that has came out within the last year. Hoping to find something that plays PS1 games, N64, and MSU-1 games well. Let me know if anyone has any suggestions

https://www.amazon.com/dp/B07BC6WH7V/ref=asc_df_B07BC6WH7V1550228400000?tag=shopz0d-20&ascsubtag=shopzilla_mp_1359-20;15615125202338366392510080301008005&creative=395261&creativeASIN=B07BC6WH7V&linkCode=asn

they just released the Pi 4 so definitely get that its much faster so you won't have to worry about it getting a bad framerate.

There are some other devices I wanted to get since they're portable handhelds and would run any version of the snes emulator. retrostone is supposed to be going to kickstarter for v2 soon...

JUD6MENT wrote:Ok, so i am finally going to get a raspberry pi emulator. About a year ago Polargames suggested I buy this one off amazon, is it still the best one, or has there been a better model that has came out within the last year. Hoping to find something that plays PS1 games, N64, and MSU-1 games well. Let me know if anyone has any suggestions

https://www.amazon.com/dp/B07BC6WH7V/ref=asc_df_B07BC6WH7V1550228400000?tag=shopz0d-20&ascsubtag=shopzilla_mp_1359-20;15615125202338366392510080301008005&creative=395261&creativeASIN=B07BC6WH7V&linkCode=asn

Yes JUD6MENT, That would be the best one to get as of right now for retropie. As @gunterm had said there is a new one called the raspberry pi 4, the link is here for that if you want to read more about it. https://www.raspberrypi.org/products/raspberry-pi-4-model-b/. But amazon has yet to carry it though so I would not worrie to much about it. Also as of now the Raspberry Pi 4 does not run retropie yet, https://retropie.org.uk/forum/topic/22660/the-new-raspberry-pi-4-is-here

Now good news for your games play list is PS1 and MSU-1 games play great, but there are at time issues, but as long as you keep the emulators updated you should be fine with it. The sad part is that N64 is still a no go for the most part. There are some N64 games that can be played on it but to find a current updated list is a little tricky to find, and you also have to make sure things a configured the right way. Link to that is here https://github.com/RetroPie/RetroPie-Setup/wiki/Optimization-for-Nintendo-64. So its best to pass on N64 sadly.  

Also I would suggest at least a 128 GB sd card, because PS1 and MSU-1 games do take up a lot of room, mostly PS1 though. I hope this helps you out. :-D

Ok, i got my order placed, thanks guys!

JUD6MENT wrote:Ok, i got my order placed, thanks guys!

(SNES "lr-snes 9x")
Shader Passes 3
Shader #0 = quilez.glsl
Shader #0 Filter = Don't Care
Shader #0 Scale = Don't Care
Shader #1 = crt-pi-vertical.glsl
Shader #1 Filter = Don't Care
Shader #1 Scale = 2x
Shader #2 = barrel-distortion.glsl
Shader #2 Filter = Don't Care
Shader #2 Scale = Don't Care

................
................
................

best for the snes I could do, a few months ago I updated to that .................. (i also over clock the pi too), there two folders with those shaders in them, you check on basic install.

I'm not buying a raspberry pi 4 until it comes on ebay or something, but, the raspberry pi 4 is powerful enough to install and play those rpg maker games on steam, and possible a more accurate emulator then snes9x

not to mention, we may be able to play a better package of mame games at full speed

(the rpi 4 uses some new system, not exactly the same as the jesse stretch image install at present, my best guess, a few hours to migrate files from current backup, perhaps another week or two to get familiar with the changes, and try to install a full operating system, dual boot or use separate sd card) (no reason why we cannot just install an operating system to play a pc game like starcraft/diablo/warcraft/red alert or civilization)

(I won't know until the reports come in, if its better to buy now or a month, after or on release, to 6 months down the line the rpi 4,  that is like the trend of a hardware update ............... looking forward to installing windows 7 though on it, just for fun, testing)

(this time I'll make my own case, out of crazy glue or silicon and plastic like from a food container, with a basic pc fan on top, I will buy those cheap aluminum heatsinks though) (this definitely is a must buy for snes fans, there are lots of tiny tweak that maybe we can migrate like using same sound driver and sound emulator (like sinc and sinc), lots of tweaks, may not be needed anymore) (already reports of a stable overclock to 1.75 ghz .... more then enough cpu gpu for operating system, or even windows)

JUD6MENT wrote:Ok, i got my order placed, thanks guys!

Your very Welcome , Anytime dude. Feel free to ask for more info if you need some.

So i got everything to work for the most part. The first game I have installed is Megaman X MSU-1 and the music volume is very quiet, Is there a way to turn it up?

actually, may just be my megaman x msu-1 game, my Donkey Kong Country 2 MSU-1 is working great. However, whenever a new song plays, it starts super quiet and slowly gets louder, and also every now and then the volume will be inconsistent on loudness, like it will get quieter for a split second and then correct itself. Is there a reason why or a fix

Oh, lol, I got the solution again, I am going to post it just in case someone else runs across this problem. It was the smart tv setting. something called "volume leveling" was turned on, and it did not know how to interact with the raspberry pi correctly, so it was doing inconsistent volume adjustments on me. Everything is working correctly, other than my X1 msu-1, I probably have an old patch applied back when we had all those volume issues, probably a new patch and rom will do the trick.
'
Thanks Polar and everyone else for the guides to what to buy and how to do this. This is awesome!

JUD6MENT wrote:Oh, lol, I got the solution again, I am going to post it just in case someone else runs across this problem. It was the smart tv setting. something called "volume leveling" was turned on, and it did not know how to interact with the raspberry pi correctly, so it was doing inconsistent volume adjustments on me. Everything is working correctly, other than my X1 msu-1, I probably have an old patch applied back when we had all those volume issues, probably a new patch and rom will do the trick.
'
Thanks Polar and everyone else for the guides to what to buy and how to do this. This is awesome!

Your welcome dude . Another tip for you. Make sure every now and then you update the lr-snes9x emulator, use the update as binary, not update from source. If you update from source it will take a very long time. Just wanted to let you know. :-D

JUD6MENT wrote:So i got everything to work for the most part. The first game I have installed is Megaman X MSU-1 and the music volume is very quiet, Is there a way to turn it up?

Use the 4.5.1 Image for Raspberry pi 3/3b+, if your using 3b+, you don't need to overclock or do any "tweak lag controller" modifying its all setup basically
https://github.com/RetroPie/RetroPie-Setup/releases

Also One Important Note* (1280x720p) (versus using tv default, in my case lcd was 1366x768 that caused sound problems in snes msu-1) (You don't need to use 640x480 anymore, the retropie 4.5.1 update does improve big time) (Goto "raspi-config/advanced options/Resolution-set specific screen resolution ........ and set it to 1280x720p, don't need to touch the grey box option)


GRAPHIC SHADER SETTINGS + OVERLAY (WHAT I USE NOW) (BEST I CAN DO FOR ALL EMULATORS I USE, low performance and good quality, actually couldn't find a better combination)

best possible to use default tv/lcd tv resolution setting
(No Render Res or Resolution Option set from Grey Box ... (Default lcd tv resolution set from raspi automatically))

current setting for raspberry pi 3 = 1280x720p (set from raspi config options for the gui select screen, set from greybox for all emulators)

lr-snes9x
lr-genesis-plus-gx
lr-mame2010
lr-mame2003
lr-FBneo
(Onscreen Overlay)
Overlay Preset ... "mame-cools-4x.cfg"
Overlay Opacity ... 0.05
Overlay Scale ... 1.00

Shader#0 ... lcd-pass-2.glsl (or try gamma.glsl)
Shader#0 Filter ... Don't Care
Shader#0 Scale ... Don't Care
Shader#1 ... ntsc-gauss-pass.glsl (or try linearize.glsl)
Shader#1 Filter ... Don't Care
Shader#1 Scale ... Don't Care
Shader#2 ... barrel-distortion.glsl
Shader#2 Filter ... Don't Care
Shader#2 Scale ... Don't Care

Additional Settings for "lr-snes9x"
Hi-Res Blending ... "merge"
Audio Interpolation ... "gaussian"
SuperFX Overclocking ... 50% (won't get good playback on starfox anyway)
Reduce Slowdown ... "Compatible" (some games need this disabled or set to "light")
Reduce Flickering ... Enabled


Additional Settings for "lr-genesis-plus-gx"
Mega Drive / Genesis FM ... mame (ym2612) ... (should be default)
Blarg NTSC Filter ... svideo
Remove Per-Line Sprite Limit ... enabled


lr-nestopia
(Onscreen Overlay)
Overlay Preset ... mame-cools-4x.cfg
Overlay Opacity ... 0.05
Overlay Scale ... 1.00

Shader#0 ... ntsc-gauss-pass.glsl (old setting..color-mangler.glsl)
Shader#0 Filter ... Don't Care
Shader#0 Scale ... Don't Care
Shader#1 ... barrel-distortion.glsl
Shader#1 Filter ... Don't Care
Shader#1 Scale ... Don't Care

Additional Settings for "lr-nes"
Blargg NTSC Filter ... svideo
Palette ... cxa2025as
Remove 8-sprites-per-scanline limit ... enabled
CPU Speed 2x
Flavored System ... famicom


"lr-pcsx-rearmed"
(no screen overlay used)

Shader#0 ... 2xSai.glsl (Can Effect Performance, or blur, so don't use it)
Shader#0 Filter ... Don't Care
Shader#0 Scale ... Don't Care

Additional Settings for "lr-pcsx-rearmed"
PSX CPU Clock ... 70 (50 for alundra 2 to fix saving and, internal section to allow play past black screen after logo)
Sound Interpolation ... gaussian


"lr-gpsp"
(Onscreen Overlay)
Overlay Preset ... mame-cools-4x.cfg
Overlay Opacity ... 0.10
Overlay Scale ... 1.00

Shader#0 ... gamma.glsl (or try zfast_lcd_standard)
Shader#0 Filter ... Don't Care
Shader#0 Scale ... Don't Care
Shader#1 ...  linearize.glsl (or try ntsc-gauss-pass)
Shader#1 Filter ... Don't Care
Shader#1 Scale ... Don't Care
Shader#2 ... barrel-distortion.glsl
Shader#2 Filter ... Don't Care
Shader#2 Scale ... Don't Care

(where to find shader used here, in raspberry pi using retropie)
quick menu/onscreen overlay/overlay preset/rpi/mame-cools-4x.cfg
quick menu/shaders/shader #/shaders_glsl/ntsc/shaders/ntsc-gauss-pass.glsl
quick menu/shaders/shader #/shaders_glsl/handheld/shaders/lcd-shader/lcd-pass-2.glsl
quick menu/shaders/shader #/shaders_glsl/misc/color-mangler.glsl
quick menu/shaders/shader #/shaders_glsl/cubic/shaders/linearize.glsl

(Its Time for Retropie 4, which I have but its not good now with no official release, best to build from that but ............ you don't need to purchase a RPI4 for any of the above emulators, you will get some better performance on some games, not much for ones that work, and you will get new emulators to play with once everything is official release)

(Retroarch was updated to now 1.7.8, which has digital button assignments for analog BIG IMPROVEMENT, in REtropie 4.5.1, but real retroarch is like 1.81 or something, we may see that in official release, YOU NEED TO DO YOUR CONFIG FILES OVER, YOU CAN KEEP YOUR SAVES!!!! (I did all that troublesome work too)

(sometimes on lcd hdtv THE default resolution will look better than 1280x720 or higher, but retropie 3b/3b+, best is 1280x720 that is major reason to buy a raspberry pi 4!!!!!) (not to mention "barrel distortion" on ps1 games would look great! but performance with using any shader for ps1 is not good for now, but games do work and play great

(the idea behind using shaders is to NOT, cause, SCREEN BLUR, and to maintain some of the blocky graphics without losing color or vibrance, actually adding to it) (if your not using a lcd or flat screen tv, then don't use barrel distortion, otherwise try  the settings above)

JUD6MENT wrote:actually, may just be my megaman x msu-1 game, my Donkey Kong Country 2 MSU-1 is working great. However, whenever a new song plays, it starts super quiet and slowly gets louder, and also every now and then the volume will be inconsistent on loudness, like it will get quieter for a split second and then correct itself. Is there a reason why or a fix

Set Raspberry pi REsolution from "raspi-config", that will stop the pi from changing resolution after a game is launched and from using the "native tv resolution" ............ you don't need to overclock on the 3b+.....but on the 3b you do, if you do overclock, make sure you install the cores you want first, because always unstable, switching from many games at a time will cause a CRASH.

Set the video mode to "16x9" like for me and save "Core Overrides, this saves overlay settings also" .... "you can save core settings for shaders too" ............ you don't need to touch the "retroarch MAIN option like from menu to change the video mode, just set them  to all the same using "core overrides per core" for the same video mode. (bring up retroarch menu in game, and save video mode settings that way, I did set video mode options from the main file, so I would have to use core overrides for each core, does appear to be fine).

For some reason, playing with the main file on that issue can cause problem like you have too, which, also ............... found no need to use "interger", if you have no issues save your files before playing with that video option, keep video threaded too.

(spend almost 3 weeks ......... going though everything when retroarch finally got updated in current 4.5.1 retropie for raspberry pi 4 ............ and finally solved any sound issues, (once and for all), other sound issues were fixed using the normalizer pack for msu-1 two separate issues ................. because I didn't understand, how video settings caused major sound problems in msu-1 in the past, i just overclocked, and that was not good at all no need to overclock on 3b+ or rpi4 for snes, but there's more cores added to rpi4, so maybe in future)

(for raspberry pi 4 so far using those nasty "supreme" or monkypie etc. packs since no official build you need to) (in your config.txt file)

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=1
hdmi_mode=4

just make sure those values are there or jusT USE THE, manual install method for raspberry pi4 .............. some missing cores, and some build from sources don't work, may even take several tries, since software is not optimized just to build, or you could try to transfer a built from source from rpi3 to rpi4, etc, lots of trouble.

(blargg filter for lr-snes, looks very bad, doesn't seem calibrated correctly, it looks much worse then the filter settings I am using too.  so best so far, plus, theres susposed new snes emulators more accurate on the rpi4, when official build is released, i think one there now too in beta builds) (the one for sega and nes look fine though)

EDIT

I no longer use "normalized" msu-1 edits I made myself. since sounds clicks from not using them are gone, following the steps we said here. However, donkey kong 1 snes, still has some random small sound clicks, if you keep jumping up and down with the rhino, or at death, or etc. ............. think that is just the patch itself ............. when i "normalized" those games myself, yes, I did remove some audio fidelity from the msu-1 tracks. it was a tradeoff but not needed anymore (at least on the 3b+ version of the pi).

Best MSU-1 Snes game every played is still Chrono Trigger, close second Axelay, close third, probably Earthbound with MOD and msu-1 (reported fading sound issue on some mods that used "coilsnake" or something, did'n't do full playthrough but didn't notice, but, if reported sure its there)