Sega Mars Sample Program - Runlength Mode Test (1994)(Sega)

I think this might be documented already, unless I'm thinking of those early X-Treme models.

 

I know of a MARS sample ROM but I don't recall about any 3D Sonic model o_O And not, that isn't the Xtreme model.

*downloads ROM*

EDIT: I checked the ROM, and indeed, it isn't the test ROM I was talking about (which was the Star Wars one). Screw it. Also holy crap if that's hi-poly for the 32x o_O Is it me or is it the Sonic the Fighters model?



EDIT 2: um, doesn't seem to be the exact same model, although looks very similar... Maybe an earlier version?

 

Huh, oh wow. That's awesome. I could probably do that kind of thing too... if I weren't so goddamn lazy (I do have a 3D to 2D point algorithm with rotation and stuff like that for Plan 9 from Bell Labs and could port it to 32X.)

What is this from? I haven't seen it in the SDK on Hacking CulT, unless I'm really missing something.

Also this demo appears to be entirely Main SH-2 (68000 infinite loop of NOPs, sub SH-2 just a loop of moves). Slowpoke.

Code (Text):

1. ; slave SH-2 loop:
2. mov.l (010, pc), r1
3. mov.l (r1), r0
4. mov.l (008, pc), r2
5. mov.l (r2), r0
6. ; branch back
7. ; data

I don't know, someone help

 

What's up with the polygons in the eye area? Is it just a basis for making Sonic's normal eye shape? It looks like the polygons protrude a bit.

Also, something to note when comparing Mars' and Fighters' Sonic figures, the Fighters' Sonic has cylindrical socks and wrist glove portions along with a realistic looking hand structure. Mars uses a flared style for the socks/wrist and seems to have a spherical hand structure. Isn't the 32x supposed to go beyond what could've been done for Fighters?

 

Wow, that's pretty awesome. Would it be possible to locate and convert the data for the model into another format? (I.e. something plaintext like .X)

 

I'll load it into IDA and take a look... unless Vangar has the source =P

 

Where in the world did this come from? I don't remember ever seeing this before.

 

This is unexpected AND awesome.

 

I thought this was widely known... but I see I was quite wrong.

 

Perhaps it's related to same trick they used on the Saturn? It was discussed by Christina in one of the Xtreme threads.

 

Sorry I haven't posted on this forum for ages so here goes.
Wow, I also thought this was known as well. But if anyone hasn't worked this out, this is the model that Chris Senn used to make the Sonic 32X or Sonic Mars concept levels of a rather slow running Sonic going around two different levels.
I just found them on the Senntient website
http://xtreme.projectsonic.com/demo/sxc_sonicdemo1.gif
http://xtreme.projectsonic.com/demo/sxc_sonicdemo2.gif

 

*gasp*!
*GASP*!
!!O_O!!
I... this... is what was missing in my 32X!

 

Holy shoot, those concept levels are amazing. Something I would totally expect (and want) out of a 3D Sonic game. :v:

 

Those concept gifs, while kind of neat, just seem to remind me of Bubsy 3D. :E

That model seems way too advanced for the 32X, it has even more polygons than the Sonic jam one, doesn't it? (Not taking the sprite based tricks used in the GIFs like adding 2D hands in at the end of both of them when they zoom right in).

 

Those gifs are awesome.

 

Sorry, Charlie, those are already known. The YouTube link at the end of the Sonic Mars wiki page links to video-ized versions of these GIFs.

Disassembling has confirmed that this demo is entirely Main SH-2. I am still going through it to see how the model is stored. If we're lucky, it uses the GNUSAMPL library code from the 32X SDK.

 

All I can say is, that's an awesome way to use run-length mode that never occurred to me. Flat-shaded polygons, of course. :P

 

Not by a longshot. Sonic the Fighters was a model 2 game. The model 2 spanks the Sega Saturn, which is more comparable in all actuallity to the model 1 (although they're completely different architectures). The Saturn spanks the 32X. So that should give you an example of how far behind the 32X was from Sonic the Fighters.

 

Then again, you could make a model hack of Virtua Fighter...