Homebrew WIP melonDS for Switch

SexiestManAlive · Apr 5, 2020

Killa_kelvv said:
Im not familiar with title redirection .. i opened melonds from the switch gallery where checkpoint and Edizon are at

title redirection is simple, just hover over any title on the main menu and launch it while holding L or R, i forgot which one you have to press but im pretty sure its R, then the homebrew menu will come up and it will be able to launch the apps with more ram

Killa_kelvv · Apr 5, 2020

SexiestManAlive said:
title redirection is simple, just hover over any title on the main menu and launch it while holding L or R, i forgot which one you have to press but im pretty sure its R, then the homebrew menu will come up and it will be able to launch the apps with more ram

It worked !!! Wow thank you guys

SexiestManAlive · Apr 5, 2020

Killa_kelvv said:
It worked !!! Wow thank you guys

no problem, always happy to help

blaww · Apr 5, 2020

Just curious if there's any potential for performance improvements in the future? Most 2D games play well enough with overclocking, but 3D games are really hit or miss. The slowdown is usually something I can live with, but the resulting audio crackling/issues is what ends up making some unplayable for me. Either way, thanks for everything we've gotten so far from those involved.

Rahkeesh · Apr 5, 2020

Thought there was rumblings about opengl support, that would sure fix 3D slowdown.

Billy Acuña · Apr 5, 2020

Rahkeesh said:
Thought there was rumblings about opengl support, that would sure fix 3D slowdown.

Nope, OpenGL is cursed at the time being (slow and buggy).

Sayarin · Apr 5, 2020

catlover007 said:
it doesn't seems to be a JIT bug, I'll investigate that.

like already said by @tman708 if you don't already do, use title redirection

Yep that seemed to do the trick thanks!

catlover007 · Apr 5, 2020

blaww said:
Just curious if there's any potential for performance improvements in the future? Most 2D games play well enough with overclocking, but 3D games are really hit or miss. The slowdown is usually something I can live with, but the resulting audio crackling/issues is what ends up making some unplayable for me. Either way, thanks for everything we've gotten so far from those involved.

1. can you tell me which 2d games don't run fullspeed without overclocking? Some games use the 3d hardware to draw 2d graphics (i.e. Pokemon Ranger or Castlevania).
2. the OpenGL renderer can be fixed, but the thing is it only starts to shine when rendering at higher resolution. Rendering at native resolution it's more often than not slower than the software renderer (due to various reasons, driver overhead, it can't run in parallel to the rest of the emulation, but instead it has to run once the frame is completed, i.e. it's runtime is added onto the normal frametime, ...). The OpenGL renderer on the switch is pretty much a dead end. This is why I plan on writing an optimised software renderer at some point, though currently I'm still occupied with other things (melonDS and something secret). Another option would be to try writing a deko3D renderer. Deko3D (which released just today) is a new gpu api for specifically for the switch which is more low level (similar to vulkan, but fitting directly to the switch's hardware). For now an improved software renderer is what's planned.

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

SexiestManAlive said:
edit: figured it out lol, good job with getting melonds to run full speed in most games, question though, do you know why kh recoded wont load? i can get 358/2 days to work but not recoded.

catlover007 said:
it doesn't seems to be a JIT bug, I'll investigate that.

I just noticed I wrote the wrong things

it likely is a JIT bug is what I meant

blaww · Apr 6, 2020

catlover007 said:
1. can you tell me which 2d games don't run fullspeed without overclocking? Some games use the 3d hardware to draw 2d graphics (i.e. Pokemon Ranger or Castlevania).

Final Fantasy Tactics A2 and Knights in the Nightmare both had audio crackling/slowdown in certain situations at stock clocks. Nothing that affected play, just slightly annoying. Bumping it up to 1580 MHz solved it.

catlover007 · Apr 6, 2020

blaww said:
Final Fantasy Tactics A2 and Knights in the Nightmare both had audio crackling/slowdown in certain situations at stock clocks. Nothing that affected play, just slightly annoying. Bumping it up to 1580 MHz solved it.

yeah, both of these use the 3d engine to draw 2d graphics.

tman708 · Apr 18, 2020

Any updates?

DerekGeneric831 · Apr 27, 2020

Any new updates in the last 2 months?

Tyvar1 · Apr 27, 2020

SilentOne1994 said:
Any new updates in the last 2 months?

Here are the latest update:

https://gbatemp.net/threads/melonds-for-switch.518300/page-47#post-8948531

resetes12 · Apr 28, 2020

I don't know if someone reported it already (or where to report things), but Pokemon Mystery Dungeon Explorers of the Sky (EU) is working perfectly... but you can't save your game.

angelhp · Apr 28, 2020

resetes12 said:
I don't know if someone reported it already (or where to report things), but Pokemon Mystery Dungeon Explorers of the Sky (EU) is working perfectly... but you can't save your game.

have you got romlist in melonds folder?

Crumpet_999 · Apr 28, 2020

Is there any way to load .sav files or any kind of save file in this? Do they just go in a specific directory?

resetes12 · Apr 29, 2020

angelhp said:
have you got romlist in melonds folder?

I do, I can use my old savegame but I can't save. I'm playing in Spanish too.

Hydr8gon · Apr 29, 2020

resetes12 said:
I do, I can use my old savegame but I can't save. I'm playing in Spanish too.

I've seen this game have save problems with emulators on multiple occasions. After running into the issue with my own emulator, I found that it was using an uncommon save command to write its data (page program as opposed to page write, which is what most games use). I can't imagine melonDS not having this implemented though... Have you tried on the desktop version of melonDS? If it doesn't work there either, it might be worth making an issue report on GitHub.

catlover007 · Apr 29, 2020

resetes12 said:
I do, I can use my old savegame but I can't save. I'm playing in Spanish too.

where does this save file come from?

Hydr8gon said:
I've seen this game have save problems with emulators on multiple occasions. After running into the issue with my own emulator, I found that it was using an uncommon save command to write its data (page program as opposed to page write, which is what most games use). I can't imagine melonDS not having this implemented though... Have you tried on the desktop version of melonDS? If it doesn't work there either, it might be worth making an issue report on GitHub.

melonDS is a bit finnicky by determing the save type by the size of the file itself, which can easily go wrong if a file is trimmed or things like that.

Hydr8gon · Apr 29, 2020

catlover007 said:
where does this save file come from?

melonDS is a bit finnicky by determing the save type by the size of the file itself, which can easily go wrong if a file is trimmed or things like that.

Yeah, but considering they were able to load the save it's safe to assume that the save type was detected correctly.

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