Jump to content
Oleg Raven Moiseyev

Does Jaguar have 3d geometry ? 3D Graphic GPU?

Recommended Posts

Didn't they solve that on Hover Strike? I don't remember seeing any affine warping in that game. 

 



The general idea for 3D on the Jaguar can go like this (note that there's quite a few ways games can handle this):

 

68000:

Run the game logic.

Once per frame, tell Tom to render the display.

 

Another way it was done was shutting off the 68k after startup. Let the DSP help the GPU. 

 

 

  • Like 2

Share this post


Link to post
Share on other sites
On 6/17/2020 at 10:21 PM, sd32 said:

 

Sounds legit...But did it display as many colors as Bert in Rayman?🙃

 

Color pallet doubled. It was like a Peacock was hit by a Crayola delivery truck while driving through a rainbow in New Zealand.

  • Like 2

Share this post


Link to post
Share on other sites
On 6/19/2020 at 8:47 AM, JagChris said:

Another way it was done was shutting off the 68k after startup. Let the DSP help the GPU. 

Citation required.  It was done... where?

  • Like 1

Share this post


Link to post
Share on other sites
35 minutes ago, CyranoJ said:

Citation required.  It was done... where?

 

Every time I hit the power button, and the red light turned off.

Share this post


Link to post
Share on other sites
5 minutes ago, JagChris said:

NBA jam. Ruiner, vid grid.

Disassembled them, have you?

4 minutes ago, JagChris said:

Dactyl Joust

That well known game that everyone bought...

  • Like 1

Share this post


Link to post
Share on other sites

Pop the stack from the vsync command, and .... right into a bunch of 68000.
image.thumb.png.3b56363a52d5e235c6cf7e1bcf5b590d.png
 

Didn't take long to prove you wrong there....

  • Like 3

Share this post


Link to post
Share on other sites

In fairness to Adisak he never actually said that he stopped using the 68k but he did say that he used the GPU and DSP together. It was my assumption that he used Corley s techniques. However Scott Corley did say that he eliminated the 68k McGroarity insinuated that he used it from Ruiner onward. But Scott never clarified when exactly he started using it. It would be interesting to check Ruiner and vidgrid and see if how much 68k were used in those.

Share this post


Link to post
Share on other sites

Oh and the Ray tracing demo HVS released. 

 

TRF would be another interesting one to poke into. See what's going on there.

 

Share this post


Link to post
Share on other sites

So basically you quoted titles that you just admitted are not confirmed as examples for things you don't actually know if they did what you claimed. 

 

Great contribution to the discussion. 

  • Like 2

Share this post


Link to post
Share on other sites

why don't you use your expertise to find out how or if at all their techniques evolved like they say it did? Aren't you curious?

Share this post


Link to post
Share on other sites
1 hour ago, CyranoJ said:

So basically you quoted titles that you just admitted are not confirmed as examples for things you don't actually know if they did what you claimed. 

 

Great contribution to the discussion. 

You're right. I made assumptions on the time line for the evolution of the techniques they said they had developed on the Jag. 

 

Rereading everything in the end Adisak had a DSP engine that was 30x more efficient than anything Atari had and allowed it to help the GPU do what it does and play sound. Corley pioneered the GPU/DSP manager, the elimination of the use of the 68k after startup along with the risc GCC big fix.

 

Put it all together and at the end they had a setup that didn't use the 68k after startup and the DSP doing what it does and helping the GPU with the programmer not having to worry about overlays. Along with the option to use C on the GPU seamlessly if the programmer wished. 

 

If what they said is true then looking through their roms like you did should show evidence of things evolving towards that point. 

 

If what they said isn't true then you will see evidence to the contrary.  

Edited by JagChris
Spelling

Share this post


Link to post
Share on other sites
18 minutes ago, JagChris said:

If what they said isn't true then you will see evidence to the contrary.  

You'd better get disassembling then 😀

 

Science is made by proving your theories, not disproving other people's guess work. 

  • Haha 1

Share this post


Link to post
Share on other sites
2 hours ago, CyranoJ said:

You'd better get disassembling then 😀

 

Science is made by proving your theories, not disproving other people's guess work. 

That's weak sauce and you know it. The company who made these claims is still around and well respected. Adisak today is considered one of the best technical advisors around. Disprove his 'guesswork'.

 

And if it's so easy to find out as you claimed should be very easy for you to disprove these claims and keep expectations low.

Edited by JagChris
  • Haha 1

Share this post


Link to post
Share on other sites
9 minutes ago, JagChris said:

That's weak sauce and you know it. The company who made these claims is still around and well respected. Adisak today is considered one of the best technical advisors around. Disprove his 'guesswork'.

 

And if it's so easy to find out as you claimed should be very easy for you to disprove these claims and keep expectations low.

 

Give it up, you quoted something, it was proved wrong, you moved the goalposts - do your own sodding detective work.

  • Like 4

Share this post


Link to post
Share on other sites

No it wasn't proven wrong. You have not disproved that HVS accomplished those things before they were done. But I realize you have a vested interest in keeping expectations low. 

Share this post


Link to post
Share on other sites

Speaking of low expectations, remind us: what have you ever released on the Jag?

Edited by Zerosquare
  • Like 5

Share this post


Link to post
Share on other sites
3 hours ago, JagChris said:

But I realize you have a vested interest in keeping expectations low. 

 

That's the best jag you can come up?

 

The only thing I have low expectations of in this thread is your responses.

  • Like 3

Share this post


Link to post
Share on other sites

Yeah that's absolute hypocrisy just looking at your recent responses. I tried being nice but once again any real discussion is squashed under nastiness. With the usual sycophants liking it. You're not even polite. It's a shame no non Reboot discussion is allowed around here.

 

Some poor bastard even started a MK thread when the sources were released and it wasn't long before some suckup jumps in with yanno with all the great ports lately no one even needs to think about MK blah blah. What ports? Barbarian? Ikari Warriors? Holy crap.

 

You guys have ruined any real conversation in this forum.

 

  • Haha 1
  • Confused 1

Share this post


Link to post
Share on other sites
12 minutes ago, JagChris said:

You guys have ruined any real conversation in this forum.

No - they have tried to put a stop to conjecture, wrong information being posted, etc.

  • Like 6

Share this post


Link to post
Share on other sites
15 minutes ago, JagChris said:

You guys have ruined any real conversation in this forum.

Feel free to go start or join one of the many 'post any old random shit you like regardless of facts' forums around if you don't like the cold, hard truth.

  • Like 5

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...