DaDither - another one Img2Msx tool | MSX Resource Center (Page 4/6)

By aoineko

Paladin (895)

07-02-2023, 11:48

"palette mirror addresses" ? Never heard of it.

EDIT: Hum... ok... I've already heard of it before ^^

By Dec

Rookie (31)

09-02-2023, 19:37

The program has been updated:

-Interlaced images added
-Save as MAG added

By aoineko

Paladin (895)

09-02-2023, 20:01

It would be super nice to have image file formats on MRC's wiki.
I plan to add many image file loader to MSXgl but the hardest part is just to find information about formats. :-/

By sd_snatcher

Prophet (3645)

10-02-2023, 17:07

Dec wrote:

Is it possible to download samples of such images for tests somewhere?

Sorry for the delay to reply. You can find plenty of files in the MSX section of the RetroGallery.

You can also download many MSX Pixel Art Collections at my website.

By sd_snatcher

Prophet (3645)

10-02-2023, 23:31

Dec wrote:

-Save as MAG added

Finally a modern tool to save MSX MAG files!! Thank you so much!! 🎉🎉

Could you please also make it possible to save MAG images of any dimensions? (IOW, not only fullscreen, but also smaller or bigger than the screen)

trivia: Images bigger than the screen are called banners, AKA scrollers

By sd_snatcher

Prophet (3645)

11-02-2023, 00:33

I'm really impressed. This is the first tool that could nearly recreate a SCREEN12 image from a PNG generated directly from that image.

IOW, TEST.SCC -> test.png -> TestRecreated.SCC

It's still not perfect, but it came very close. If it can reach a perfect recreation, we'll finally be able to retouch SCREEN12 images on modern image editors without loss of quality.

On SCREEN10 it fails badly to recreate an image though. I suspect that's because it doesn't use the RGB colors, but only the YJK colors.

By Dec

Rookie (31)

11-02-2023, 09:09

sd_snatcher wrote:

Could you please also make it possible to save MAG images of any dimensions?

Ok, I will add this possibility in the next release.

sd_snatcher wrote:

TEST.SCC -> test.png

Could you show me your TEST.SCC and test.png files?

By sd_snatcher

Prophet (3645)

11-02-2023, 14:10

Dec wrote:

Could you show me your TEST.SCC and test.png files?

I'll link the SCREEN12 test files here. To generate the PNG files, I used both the DaDither built-in import function (by dragging the .SCC file to its source area then saving the PNG), or by using RECOIL. Curiously, I get different regenerated SCC files from the two cases.

https://tomseditor.com/gallery/i/51671
https://tomseditor.com/gallery/i/51679
https://tomseditor.com/gallery/i/40370
https://tomseditor.com/gallery/i/40317
https://tomseditor.com/gallery/i/34930
https://tomseditor.com/gallery/i/34930
https://tomseditor.com/gallery/i/34934
https://tomseditor.com/gallery/i/34932

The differences can be subtle because, as I mentioned, DaDither comes very close to being able to recreate the image. But the problem is that the errors accumulate in consecutive regenerations, making the process lossy. Not ideal for image edition.

By sd_snatcher

Prophet (3645)

11-02-2023, 14:26

And these are the SCREEN10 images I used with the same recreation process. But, as you can see, for this mode the results here are pretty poor. The images come out completely chewed.

https://tomseditor.com/gallery/i/34913
https://tomseditor.com/gallery/i/34904
https://tomseditor.com/gallery/i/34907

By Dec

Rookie (31)

11-02-2023, 14:31

I hope you used a Pixel aspect ratio of 1:1 and a dithering method None?