Homebrew TWPatcher - DS(i) mode screen filters and patches

Sono · Apr 7, 2021

Maximoff said:
Hi @Sono, I loved this patch. I've intalled it on my son's 2DS and it is amazing. On the other hand, I've installed it on my 2DS and unfortunately, it didn't worked. In my 2DS I installed the latest Twilight Menu and after that I unistalled it and installed the same version of my son's 2DS with Twilight 11.2.0 and it didn't worked too. Any hint?

TWPatch is independent of TWiLightMenu++. What doesn't work? If it doesn't work at all, you'll have to turn off the 2DS, hold SELECT, press Power, and in the menu that pops up, you can release SELECT, check in "Enable game patching" and "Enable module loading" (actual name might be different depending on Luma version), press START to save the settings, and it should work after that.

sodoguy said:
Pretty cool patch, the default Nintendo scaling is not very good. Thank you, Sono!

I have two questions, might be a bit dumb though, but would it be possible to center the screens on DS games at 1:1 resolution?
And are borders (like the Wii U DS VC) feasible? The black background is kind of distracting.

The centering feature was requested years ago, but sadly I don't have time since months to work on homebrew, or anything really.

As for borders, it's next to impossible to hack it into Nintendo's code. If I get GPU drivers working, I could easily add this as a feature into my own homebrew replacement of TwlBg/AgbBg.

Enterkiou said:
Hi,
Anyone has problem with Pokemon White/Black or White 2/Black 2? After using TWPatcher gives me a white screen. I have twilight menu settings with DS standard, not DSI or DSI forced.

There has to be some other problem, because TWPatcher is independent of TWiLightMenu++.

Are you using latest TWPatcher? There are some known bugs in older versions.

Maximoff · Apr 11, 2021

Sono said:
TWPatch is independent of TWiLightMenu++. What doesn't work? If it doesn't work at all, you'll have to turn off the 2DS, hold SELECT, press Power, and in the menu that pops up, you can release SELECT, check in "Enable game patching" and "Enable module loading" (actual name might be different depending on Luma version), press START to save the settings, and it should work after that.

Yeeeeeeesssss! Thank you very much man!! Now it works!!!

heiyu04 · Apr 11, 2021

hi,I'm going to revise the text. Can you give me some ideas

Sono · Apr 11, 2021

heiyu04 said:
hi,I'm going to revise the text. Can you give me some ideas

What text do you want to revise?
What is revise?

KungBore · Apr 17, 2021

Hello there! I've got a question about Redshift in TWPatcher: Can I apply the filter with different settings on the screens? For example, the top screen with 0.9 brightness and the bottom one, 0.8 or something like this?

Sono · Apr 17, 2021

KungBore said:
Hello there! I've got a question about Redshift in TWPatcher: Can I apply the filter with different settings on the screens? For example, the top screen with 0.9 brightness and the bottom one, 0.8 or something like this?

It would be possible, but there is just barely not enough data space to store a second redshift setting. There is enough space for roughly only ~1.6-1.8 screens, if my memory serves correct.

KungBore · Apr 17, 2021

Sono said:
It would be possible, but there is just barely not enough data space to store a second redshift setting. There is enough space for roughly only ~1.6-1.8 screens, if my memory serves correct.

Even on a N3DS?

Sono · Apr 17, 2021

KungBore said:
Even on a N3DS?

I didn't say RAM, I said data. I need to store the computed redshift data in TwlBg or AgbBg, and there is not enough unused free space to store two screens worth of redshift data. And no, the code to calculate the redshift data is MUCH bigger than the data itself, so that's also not an option sadly.

KungBore · Apr 17, 2021

Sono said:
I didn't say RAM, I said data. I need to store the computed redshift data in TwlBg or AgbBg, and there is not enough unused free space to store two screens worth of redshift data. And no, the code to calculate the redshift data is MUCH bigger than the data itself, so that's also not an option sadly.

Oh, I see now. Thanks for the quick reply!

chainswordcs · Apr 17, 2021

Sono said:
It would be possible, but there is just barely not enough data space to store a second redshift setting. There is enough space for roughly only ~1.6-1.8 screens, if my memory serves correct.

Just wondering, how much free memory do you have to work with?

Also, are there any benefits or meaningful differences in upscaling with GPU instead of CPU?

Sono · Apr 17, 2021

chainswordcs said:
Just wondering, how much free memory do you have to work with?

Also, are there any benefits or meaningful differences in upscaling with GPU instead of CPU?

Depends on where I want to put what piece of code.
- runonce code space is around 480bytes, but could be less in AgbBg I think
- there is space reserved for rtcom ~304bytes, but it's probably less than that in TwlBg
- the rest of the space ~108bytes is free for trainers which run every frame

There is no CPU upscaling. It's either done in MTX (the capture card used to record the DS/GBA hardware, so it can be displayed on the 3DS screen), or in GPU (only available with bad hacks, as Nintendo didn't finish this functionality (it was obviously planned, but never completed)).

Edit: GPU upscaling is blurry, but it looks very good if it doesn't hurt your eyes. Otherwise go with MTX, because you can customize the upscale filter.

chainswordcs · Apr 18, 2021

Sono said:
GPU upscaling is blurry, but it looks very good if it doesn't hurt your eyes. Otherwise go with MTX, because you can customize the upscale filter.

Why does MTX inherently look bad? (Or at least subjectively bad)

Sono · Apr 18, 2021

chainswordcs said:
Why does MTX inherently look bad? (Or at least subjectively bad)

It uses fixed point math with really low fractional resolution. Not only that, but the filters you can "port" to it are quite limited. Actually calling the upscale filter a matrix is an overstatement, because it doesn't support 3D or 4D matrixes, but two 1D matrixes.

amberlink · Apr 19, 2021

Trying to get WarioWare twisted to work, but I ran the Patch, and it still won't work, did I miss a step somewhere?

Sono · Apr 19, 2021

amberlink said:
Trying to get WarioWare twisted to work, but I ran the Patch, and it still won't work, did I miss a step somewhere?

Are you using the special build of GBARunner2? Also, currently it only works on new3DS and 2DS because I didn't implement old3DS gyro yet.

BETA215 · Apr 19, 2021

amberlink said:
Trying to get WarioWare twisted to work, but I ran the Patch, and it still won't work, did I miss a step somewhere?

Use this GBArunner2 build: https://github.com/Gericom/GBARunner2/releases/tag/v20191228-021638_ee7f6a0

amberlink · Apr 20, 2021

Sono said:
Are you using the special build of GBARunner2? Also, currently it only works on new3DS and 2DS because I didn't implement old3DS gyro yet.

I was not! I am using a new3DS though

BETA215 said:
Use this GBArunner2 build: https://github.com/Gericom/GBARunner2/releases/tag/v20191228-021638_ee7f6a0

I get the error Bios not found now?

BETA215 · Apr 20, 2021

amberlink said:
I was not! I am using a new3DS though

I get the error Bios not found now?

https://wiki.gbatemp.net/wiki/GBARunner2#BIOS

Dump/get GBA bios file, and put it in directory specified in wiki.

amberlink · Apr 20, 2021

BETA215 said:
https://wiki.gbatemp.net/wiki/GBARunner2#BIOS

Dump/get GBA bios file, and put it in directory specified in wiki.

Well it works now, so I must have done that right!

BETA215 · Apr 20, 2021

amberlink said:
Well it works now, so I must have done that right!

For some reason, now gyro doesn't works for me. The only thing that changed was TWiLightMenu++, I'm running a nightly, so I guess that might be it.

Homebrew TWPatcher - DS(i) mode screen filters and patches

Are you interested in a complete replacement of TwlBg which includes all patches?

Yes, I don't care how broken it will be!

No, I don't want to use even more broken stuff

Yes, but only in GBA mode, because I play DSi exclusives

No, because I only use DS and DSi mode

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