New gpsp update fixes stuttering with GBA emulation on PS Vita, offers major performance increase

vitagba.jpg

While you've likely been enjoying GBA emulation for years, on various platforms, the PlayStation Vita hasn't always had an easy time of it. Despite being a very similar form factor to the original GBA, and still relatively portable, the handheld never made for an ideal platform to emulate Game Boy Advance games on. mGBA is still making progress on improving GBA emulation on the Vita, while gpsp has been dealing with a major bug, which causes noticeable stuttering ingame. That's not the case anymore, though, as Frangar, developer of gpsp, has made a significant update to the emulator which fixes the broken dynarec that has been plaguing it for the past three years. The bugfix, which allows for "a big increase in performance", has been merged into Libretro's master branch, and should be available to try out in the next nightly version of RetroArch.

:arrow: Source
 

leonmagnus99

Well-Known Member
Member
Joined
Apr 2, 2013
Messages
3,704
Trophies
2
Age
33
Location
Seinegald
XP
2,875
Country
Iraq
Here's a comparison of FFVI run on mGBA versus gpsp via Adrenaline. The crappy sound performance on mGBA is simply because the game is running too slowly as you can see from the FPS counter. You can also see how even at the lower PSP level clocks, performance on adrenaline gpsp is vastly superior thanks to a dynarec plus some hacks.

This release is a big deal because now you don't have to boot into adrenaline to enjoy GBA games at fullspeed and can take advantage of the Vita's full resolution for better scaling. Hopefully you can also play most of the library at fullspeed without needing to mess with various hack tweaks and forks as with adrenaline gpsp.


perfect, now to wait for the gpsp core!!!
 

Clydefrosch

Well-Known Member
Member
Joined
Jan 2, 2009
Messages
6,024
Trophies
2
XP
4,625
Country
Germany
No offense, but considering the PS1 core doesn't crash and the gpSP core doesn't crash on any other platform, I'm going to call bs on that one. It's an issue with the 3DS build specifically. Also I'd like to point out that it used to work fine before.


And sleep mode.

Yes, it's an issue with the 3ds port and within that, the dynarec.
The guy who ported it is long gone, noone else wants to dive in and spend 3 years figuring out what's wrong, especially with vc being an option.

Not sure what before you're talking about, but this has been an issue since before ra 1.3

--------------------- MERGED ---------------------------

perfect, now to wait for the gpsp core!!!
Yesterday's nightly build has the fixed core already.
 
  • Like
Reactions: leonmagnus99

leonmagnus99

Well-Known Member
Member
Joined
Apr 2, 2013
Messages
3,704
Trophies
2
Age
33
Location
Seinegald
XP
2,875
Country
Iraq
Last edited by leonmagnus99,

Clydefrosch

Well-Known Member
Member
Joined
Jan 2, 2009
Messages
6,024
Trophies
2
XP
4,625
Country
Germany
arigato gozaimasu ,thx and danke mein freund.
@Clydefrosch any chance i can use my previous save states? c:
they are in .sav/svs format , and I'll miss the blue themed gpsp XD

but if i get to play full speed gba straight off the menu it's cool.

and the other thing is, i installed the full vpk of that retroarch zip, can i create a core of gpsp within the retroarch emulator ? thanks in advance.

Ah, i forgot to mention, you also need to download the data file and move the RetroArch folder inside the downloaded data archive to PS Vita data directory.

i don't think gpsp .sav files are compatible with other emulators .sav files. you can try copying them into the corresponding folders in /data/retroarch/ system/savefiles and /savestates (those might actually be in a location, i moved mine around a bit i think) and see how it goes from there.
if you mean from psp gpsp, it might work though.


I'm not sure what you mean by creating a core in the retroarch emulator. the gpsp core is part of the retroarch installation. if you try to open a gba game, it (and vba-next) should be presented as options for you to chose.
 
  • Like
Reactions: leonmagnus99

leonmagnus99

Well-Known Member
Member
Joined
Apr 2, 2013
Messages
3,704
Trophies
2
Age
33
Location
Seinegald
XP
2,875
Country
Iraq
need to download the data file and move the RetroArch folder inside the downloaded data archive to PS Vita data directory
i downloaded that and got retroarch folder , i put "retroarch" into the root of ux0

am i supposed to move it elsewhere?
and regarding the core, i mean like having retroarch always boot with gpsp as core like as base because that's the only emulator i would like to use.

and yes my saves are from gpsp (from adrenalines psp).
hopefully they work.
 

Clydefrosch

Well-Known Member
Member
Joined
Jan 2, 2009
Messages
6,024
Trophies
2
XP
4,625
Country
Germany
i downloaded that and got retroarch folder , i put "retroarch" into the root of ux0

am i supposed to move it elsewhere?
and regarding the core, i mean like having retroarch always boot with gpsp as core like as base because that's the only emulator i would like to use.

and yes my saves are from gpsp (from adrenalines psp).
hopefully they work.

i believe it expects the files to be in the data folder.

and no, i thing on vita, retroarch can't load a core like that. but if you only open content and go to your gba games, it wont load any others either
 
  • Like
Reactions: leonmagnus99

leonmagnus99

Well-Known Member
Member
Joined
Apr 2, 2013
Messages
3,704
Trophies
2
Age
33
Location
Seinegald
XP
2,875
Country
Iraq
There should be a retroarch folder in there, you should merge those folders.
gotcha thanks bruv =)

@Clydefrosch and look here this is what i mean with standalone vpk

https://www.reddit.com/r/vitahacks/...amp&utm_medium=&utm_content=comments_view_all

is there a vpk for the fixed gpsp? let me know if you find it!!!

i think i found it for anyone that's interested in single cores check on last page of thread gpsp fixed is up there!

https://gbatemp.net/threads/retroar...ta-edition-nightlies-included.437034/page-206
 
Last edited by leonmagnus99,
  • Like
Reactions: Tarmfot

Site & Scene News

Popular threads in this forum

General chit-chat
Help Users
  • BakerMan @ BakerMan:
    i said i was sleeping...
  • BakerMan @ BakerMan:
    sleeping with uremum
  • K3Nv2 @ K3Nv2:
    Even my mum slept on that uremum
  • TwoSpikedHands @ TwoSpikedHands:
    yall im torn... ive been hacking away at tales of phantasia GBA (the USA version) and have so many documents of reverse engineering i've done
  • TwoSpikedHands @ TwoSpikedHands:
    I just found out that the EU version is better in literally every way, better sound quality, better lighting, and there's even a patch someone made to make the text look nicer
  • TwoSpikedHands @ TwoSpikedHands:
    Do I restart now using what i've learned on the EU version since it's a better overall experience? or do I continue with the US version since that is what ive been using, and if someone decides to play my hack, it would most likely be that version?
  • Sicklyboy @ Sicklyboy:
    @TwoSpikedHands, I'll preface this with the fact that I know nothing about the game, but, I think it depends on what your goals are. Are you trying to make a definitive version of the game? You may want to refocus your efforts on the EU version then. Or, are you trying to make a better US version? In which case, the only way to make a better US version is to keep on plugging away at that one ;)
  • Sicklyboy @ Sicklyboy:
    I'm not familiar with the technicalities of the differences between the two versions, but I'm wondering if at least some of those differences are things that you could port over to the US version in your patch without having to include copyrighted assets from the EU version
  • TwoSpikedHands @ TwoSpikedHands:
    @Sicklyboy I am wanting to fully change the game and bend it to my will lol. I would like to eventually have the ability to add more characters, enemies, even have a completely different story if i wanted. I already have the ability to change the tilemaps in the US version, so I can basically make my own map and warp to it in game - so I'm pretty far into it!
  • TwoSpikedHands @ TwoSpikedHands:
    I really would like to make a hack that I would enjoy playing, and maybe other people would too. swapping to the EU version would also mean my US friends could not legally play it
  • TwoSpikedHands @ TwoSpikedHands:
    I am definitely considering porting over some of the EU features without using the actual ROM itself, tbh that would probably be the best way to go about it... but i'm sad that the voice acting is so.... not good on the US version. May not be a way around that though
  • TwoSpikedHands @ TwoSpikedHands:
    I appreciate the insight!
  • The Real Jdbye @ The Real Jdbye:
    @TwoSpikedHands just switch, all the knowledge you learned still applies and most of the code and assets should be the same anyway
  • The Real Jdbye @ The Real Jdbye:
    and realistically they wouldn't

    be able to play it legally anyway since they need a ROM and they probably don't have the means to dump it themselves
  • The Real Jdbye @ The Real Jdbye:
    why the shit does the shitbox randomly insert newlines in my messages
  • Veho @ Veho:
    It does that when I edit a post.
  • Veho @ Veho:
    It inserts a newline in a random spot.
  • The Real Jdbye @ The Real Jdbye:
    never had that i don't think
  • Karma177 @ Karma177:
    do y'all think having an sd card that has a write speed of 700kb/s is a bad idea?
    trying to restore emunand rn but it's taking ages... (also when I finished the first time hekate decided to delete all my fucking files :wacko:)
  • The Real Jdbye @ The Real Jdbye:
    @Karma177 that sd card is 100% faulty so yes, its a bad idea
  • The Real Jdbye @ The Real Jdbye:
    even the slowest non-sdhc sd cards are a few MB/s
  • Karma177 @ Karma177:
    @The Real Jdbye it hasn't given me any error trying to write things on it so I don't really think it's faulty (pasted 40/50gb+ folders and no write errors)
  • DinohScene @ DinohScene:
    run h2testw on it
  • DinohScene @ DinohScene:
    when SD cards/microSD write speeds drop below a meg a sec, they're usually on the verge of dying
    DinohScene @ DinohScene: when SD cards/microSD write speeds drop below a meg a sec, they're usually on the verge of dying