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04-24-24 03:37 PM |
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| 0 users currently in ROM Hacking | 3 guests |
| Main - ROM Hacking - Compression types used in games | New thread | New reply |
| SecretChao428 |
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 Mini Octorok Level: 12 Posts: 11/19 EXP: 6127 Next: 1794 Since: 04-30-09 Last post: 5444 days Last view: 4741 days |
I know this place tends to stick to compressions such as LZ 1 and LZ 2, but I wanted to know if the data in SMW that uses RLE 1 also is used such as graphic data Fonts that use the format for fixed width compression?(used in Tetris Attack and Dragon Quest 5, 6, and 3r) |
| MathOnNapkins |
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 Super Koopa Level: 62 Posts: 656/842 EXP: 1935231 Next: 49455 Since: 02-19-07 From: durff Last post: 4486 days Last view: 4009 days |
What exactly do you mean by fixed width compression? ____________________ Zelda Hacking Forum hobbies: delectatio morosa |
| SecretChao428 |
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Mini Octorok Level: 12 Posts: 12/19 EXP: 6127 Next: 1794 Since: 04-30-09 Last post: 5444 days Last view: 4741 days |
Posted by MathOnNapkinsFonts that do not use any form of VWF code in the game, while Fixed Width uses 1 size only per character, and uses RLE compression to save space instead of VWFs that has to use uncompressed characters. |
| Sukasa |
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 Red Birdo Level: 92 Posts: 1772/2112 EXP: 7688260 Next: 68677 Since: 02-19-07 Last post: 4446 days Last view: 3217 days |
VWF can also use compressed characters, if the proper handling code is included to process them when uncompressed. |
| SecretChao428 |
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Mini Octorok Level: 12 Posts: 13/19 EXP: 6127 Next: 1794 Since: 04-30-09 Last post: 5444 days Last view: 4741 days |
Posted by SukasaWell I just wanted to know that if the compression in a 1BPP font of the 4 games are using the LC_RLE 1 format just in case if that is the correct type? |
| Kawa |
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 CHIKKN NI A BAAZZKIT!!! 80's Cheerilee is best pony Level: 138 Posts: 1858/5344 EXP: 30940420 Next: 722561 Since: 02-20-07 From: The Netherlands Last post: 4496 days Last view: 2631 days |
Frankly, I'd think it'd just be bitpacked.
To demonstrate: That's Pokémon Red's font in the native mode for the original Gameboy, 2 bits per pixel. You can make out the font on the top half, and notice that you can only see every other letter. That's the same data seen as one bit per pixel. Now it's the bottom half that's messed up. If you squint, you can make out the border in the last few tiles. The GBA version does the same thing, but from four to two instead. My point here is that bitpacking is a fairly common trick, but it's not compression per se since there's no data "left out" like with RLE, LZ, Huffman... ____________________ Wife make lunch - Shampoo Opera - give it a spin Spare some of your free time? <GreyMaria> I walked around the Lake so many goddamn times that my sex drive was brutally murdered Kawa rocks  — byuu |
| SecretChao428 |
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Mini Octorok Level: 12 Posts: 14/19 EXP: 6127 Next: 1794 Since: 04-30-09 Last post: 5444 days Last view: 4741 days |
Posted by KawaThe if this board had image attachments for this, I would add an image of the compression method that is used just for those games, given that if I had posted a image of this fixed width format, then we would get the idea of it, also the NDS NFTR files will use similar formats and use the RLE encoding if anyone has played a game that uses a format for it, but the image text you are showing is using a GB to NES based factor, but when I get back home and get a Photobucket, I will post the character file that contains this method I am try to explain a bit more clearly. |
| Kawa |
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CHIKKN NI A BAAZZKIT!!! 80's Cheerilee is best pony Level: 138 Posts: 1861/5344 EXP: 30940420 Next: 722561 Since: 02-20-07 From: The Netherlands Last post: 4496 days Last view: 2631 days |
Posted by SecretChao428How do you think I did this? The Uploader is still a part of the board, y'know? Post your image. Forget Photobucket. Posted by SecretChao428You speak nonsense. These are both from a Classic Gameboy game. The NES is 2bpp planar. These images are both linear. The effect would've been recognizably different for NES. ____________________ Wife make lunch - Shampoo Opera - give it a spin Spare some of your free time? <GreyMaria> I walked around the Lake so many goddamn times that my sex drive was brutally murdered Kawa rocks — byuu |
| SecretChao428 |
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Mini Octorok Level: 12 Posts: 17/19 EXP: 6127 Next: 1794 Since: 04-30-09 Last post: 5444 days Last view: 4741 days |
Just to be sure that anyone here would know about it, here is what I am talking about in example of this RLE compression with fonts,
I hope this will open many eyes to the idea of what compression is used. |
| CKY-9K |
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 Pokey Level: 57 Posts: 560/693 EXP: 1430259 Next: 55669 Since: 06-27-07 From: cKy Last post: 208 days Last view: 116 days |
I was wondering the same thing about Wario Land 2? ____________________ 
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| SecretChao428 |
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Mini Octorok Level: 12 Posts: 19/19 EXP: 6127 Next: 1794 Since: 04-30-09 Last post: 5444 days Last view: 4741 days |
Posted by CKY-9K Guess we are only talking about what is not compressed and just use the basic format change. |
| roxahris |
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Level: 52 Posts: 451/568 EXP: 1072275 Next: 11565 Since: 02-19-07 From: Here? Last post: 3922 days Last view: 3884 days |
Hey, can you go and, like, learn how to speak English properly? I can't read ANYTHING you've said so far, as most of it reads as a meaningless jumble or gibberish. ____________________ Love your lawn. |
| MathOnNapkins |
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Super Koopa Level: 62 Posts: 666/842 EXP: 1935231 Next: 49455 Since: 02-19-07 From: durff Last post: 4486 days Last view: 4009 days |
Posted by roxahris ____________________ Zelda Hacking Forum hobbies: delectatio morosa |
| Main - ROM Hacking - Compression types used in games | New thread | New reply |
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