Saturnin WIP thread

[M3d10n]

I just did a small test, and adding a center vertex really does not fix the problem, it only makes it a bit smaller. Check the attached image.

I've also been reading on perspective correction, and it really needs you to provide Z information to the video card, so it can use it while interpolating the UV coords.

It seems the only ways to get around such problem are either using a software renderer with quad-based rendering, or "guessing" Z values for the quad's vertices. In theory, it's not really that hard to come up with values that produce passable results, by comparing the length of the quad's axis and maybe the diagonals, but it could get expensive. The problem is that it would propably not work properly with concave quads (but splitting the quad in two triangles already has 50% odds of messing with those already).

Well, thanks for aswering my question

--EDIT--

in the attached image, in order:

1) quad split into two triangles (same Z value for all vertices), 2) HW perspectively correct plane (correct Z values for each vertex), 3) quad split into four triangles (same z value for all vertices)

 

[Runik]

A new game is working ! Ejihon Tantei Jimusyo, another obscure japanese game ...

The background isn't showing so the game isn't "playable" yet, but I can move the cursor on screen

On another side, Keith from Emufanatics wanted to do a little interview of myself, here is the result

 

[Runik]

Woohooo !!! I'm on fire


Maru-Chan de Goo! : isn't that logo beautiful ?

The game crashes just after that

Fighting Dragon Legend Elan Doree

The game works with graphical glitches, but I need to add some code to see if the game is playable

Cotton 2 : unable to start game

Danchi de Hanafuda : it's playable !!!

Taisen Tant-R Sasi-su!

A Parrapa like game, a lot of graphical problems

 

[Runik]

Last but not least : Puyo Puyo Sun !

Start doesn't start the game ...

That's all for today :biglaugh

 

[mal]

Even though I have little idea about most of the game, I like Taisen Tant-R Sasi-su the best.

It has a cart racing mini game.

Go Runik! :thumbs-up:

 

[racketboy]

Originally posted by mal@Mar 30, 2004 @ 11:30 PM

Even though I have little idea about most of the game, I like Taisen Tant-R Sasi-su the best.

It has a cart racing mini game.

Go Runik! :thumbs-up:

Never seen that game before -- maybe I'll have to hunt that one down.

Impressive, as usual, Runik

keep up the good work

 

[mal]

Originally posted by racketboy@Mar 31, 2004 @ 10:00 AM

Never seen that game before -- maybe I'll have to hunt that one down.

It's one of the many ST-V carts that I own.

 

[racketboy]

oh cool -- is it on the Saturn as well? or arcade only?

 

[mal]

I don't think it made it to the Saturn, but don't quote me on it.

 

[Runik]

Thanks guys

With a little more work I can have something interesting on Elan Doree and Taisen Tant-R Sasi-su ...

And Fabien gave me some times ago the way to start games that doesn't detect the start button. So there might be some more playable games on Saturnin really soon

 

[Runik]

Super Major League is booting, it's "showing" something

Watch your eyes, those pics are awful :lol:

The game crashes when I try to start a game ...

Damn, I know this guy ... what's his name ?

 

[Runik]

I fixed the DMA crash in Super Major League, so I can add credits, but start doesn't start the game


Elan Doreé starts do display interesting things (but there's still a lot to do)

Even if it doesn't seem so, the game is playable

 

[Runik]

I have something displayed in Columns 97, but a lot of background modes is missing ...

Astra Superstars is going into the attract mode

And last but not least : Funky Head Boxers is playable

 

[vbt]

Originally posted by Runik@Apr 8, 2004 @ 05:37 PM

And last but not least : Funky Head Boxers is playable

Hey,I've bought this games for my Saturn only some month ago and you're closed to emulate it perfectly

 

[Runik]

Originally posted by vbt@Apr 8, 2004 @ 08:26 PM

Hey,I've bought this games for my Saturn only some month ago and you're closed to emulate it perfectly

Thanks

But believe me, it's far from being perfect ... speed is a big issue !

But I'm really happy so see it running that way

By the way, I tried your sms emu, and unfortunately it loops endlessly

I'll tell you when I will have something working

 

[Runik]

A little bonus before I go to

The missing part on the left is due to ... missing code

 

[Runik]

I worked a bit on Astra Supertars, so now the attract mode looks better, and I can actually go to the character selection (it loops after that).

There are still huges graphicals problems ...

 

[mal]

The attract mode cetrainly looks good.

 

[Runik]

Originally posted by mal@Apr 12, 2004 @ 05:15 PM

The attract mode cetrainly looks good.

Thanks mal


Finally, after spending quite a long time on it, I found a way to display correctly multiple planes ... as a result, here are the screenshots

 

[madmalkav]

I just want to ask for as many debugging fuctions as possible in your next version. I think it will be not only useful for programmers and game hackers, but they will also have some stuff to send you back if they catch a bug, and that will be helpful, don't you think?