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ClosedGL v9.9999 for TI-89
Posted by Michael on 17 May 2006, 01:39 GMT

[ClosedGL]We first reported on ClosedGL over a year ago, and since then David Teitlebaum has been working on improvements. The new ClosedGL Release 9.9999 is greatly improved over the previous version. ClosedGL is a library for the TI-89 which provides an interface to various graphics routines. If you aren't a C TI-89 programmer, then just look at the amazing screenshots.

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Re: ClosedGL v9.9999 for TI-89
ChaosTheory  Account Info

I see no reason to break the trend so - Wow!! That's really cool. Makes me want to go buy a TI-89.

Reply to this comment    17 May 2006, 03:36 GMT

Re: ClosedGL v9.9999 for TI-89
Denzel Morris  Account Info

Wow that is crazy it really shows what the calculator is capable of its amazing that is amazing I can't get over it. Now all I wish is that there could be a ClosedGL for the TI 83\84 series!!!!!!!!!!!!!!!!!!!!!

Reply to this comment    17 May 2006, 07:16 GMT

Re: Re: ClosedGL v9.9999 for TI-89
JfG  Account Info
(Web Page)

it could very well exist on the z80. Heck, you could even program it in Basic, it's just that it would be slow.
A calculator can do anything as long as it has enough memory.

Reply to this comment    17 May 2006, 08:34 GMT


Re: Re: Re: ClosedGL v9.9999 for TI-89
elfprince13 Account Info
(Web Page)

my thoughts exactly.

You can program anything onto a calculator with the limits of memory.

the real question is if it will render fast enough to be useful, but I think that in Asm on the z80 calcs you could definitely make an acceptably fast 3d engine.

Reply to this comment    17 May 2006, 12:13 GMT


ClosedGL v9.9999 for TI-89
Benjamin Kiessling  Account Info

I´ve tried it on my V200 and its very slow.But If you can wait 5Minutes... Its amazing!

Reply to this comment    17 May 2006, 15:24 GMT

Re: Re: ClosedGL v9.9999 for TI-89
Tyler C  Account Info
(Web Page)

I dont think that would work very well considering 1. The z80 does not have enough Ram and 2. the z80 doesnt support a possible Grayscale method for this type of rendering.

Reply to this comment    17 May 2006, 17:55 GMT

Re: Re: Re: ClosedGL v9.9999 for TI-89
JfG  Account Info
(Web Page)

You *really* don't need a lot of RAM to render a 3D scene if you are not trying to do something fast: just do a ray tracer!
And concerning the grayscale, I don't see why the way pixels are rendered would cause a problem.

Reply to this comment    17 May 2006, 20:52 GMT


Re: Re: Re: Re: ClosedGL v9.9999 for TI-89
burntfuse  Account Info
(Web Page)

RAM's definitely not an issue, as you said, and what is it with grayscale? It's not like the 89 has hardware support for grayscale or anything...AFAIK, they do it on the 89 in the same way as on the 83+ or 86, by flipping quickly between a few images with an interrupt handler. Although it would be a lot faster on the 86 because of the memory-mapped display...

Reply to this comment    18 May 2006, 20:08 GMT


Re: Re: Re: Re: Re: ClosedGL v9.9999 for TI-89
W Hibdon  Account Info
(Web Page)

Thus 8 -- or is it 7? -- grays are workable on the 86.

-W-

Reply to this comment    19 May 2006, 14:02 GMT


Re: Re: Re: Re: Re: Re: ClosedGL v9.9999 for TI-89
burntfuse  Account Info
(Web Page)

People have done up to 32 IIRC, but 4 is really the max for moving images, and 8 for showing still pics without flicker.

Reply to this comment    19 May 2006, 20:43 GMT


Re: Re: Re: ClosedGL v9.9999 for TI-89
Nathan Ladwig  Account Info

Ok, I found a program on TiCalc called Supergrey. It is an *Almost* flickerless Greyscale tool. You could put this into a version for the 84's. You probabally need ALCDFIX to run it on an 84. I did.

Reply to this comment    19 May 2006, 18:15 GMT

Re: Re: Re: Re: ClosedGL v9.9999 for TI-89
Nathan Ladwig  Account Info

Edit:I meant that you could output the picture into a compatable format for this program.

Reply to this comment    19 May 2006, 18:19 GMT


Re: Re: Re: Re: ClosedGL v9.9999 for TI-89
calcprogrammer1 Account Info

I just tried Super Grey. It didn't work. Ram cleared on my TI 84+ Silver Edition. Worked on TiLem, but then I couldn't get it to quit and had to reset. Can't get it working again. However, the greyscale engine in the game "Desolate" looks pretty good, with 4 level greyscale, but there is a little bit of flicker.

Reply to this comment    5 June 2006, 05:32 GMT


Re: Re: ClosedGL v9.9999 for TI-89
burntfuse  Account Info
(Web Page)

I think there's a 3D graphing program for the 86, and it actually works pretty well (although it's slow). The problem is that for one thing, the processor in the Z80 series is run at a lower speed, and the Z80 is less powerful than the 68k.

Reply to this comment    18 May 2006, 20:06 GMT


Re: Re: Re: ClosedGL v9.9999 for TI-89
Lewk Of Serthic  Account Info

There's Graph^3 for the 83+, runs faster that the 3d graph feature on the 89 (though the resolution is obviously worse).

Reply to this comment    18 May 2006, 23:47 GMT


Re: Re: Re: Re: ClosedGL v9.9999 for TI-89
Someone Someone  Account Info

For grayscale, don't you change where the screen reads the data for what to display? Not, turning a pixel on and off.

Reply to this comment    20 May 2006, 20:50 GMT


Re: Re: Re: Re: Re: ClosedGL v9.9999 for TI-89
jesse frey  Account Info

depending on the calculator modle the place where the screen reads from may be changed but the effect is always turning pixils on and off

Reply to this comment    21 May 2006, 20:29 GMT

Re: ClosedGL v9.9999 for TI-89
Gustavo Saur.  Account Info

very impressive. OO

Reply to this comment    17 May 2006, 10:30 GMT

Re: ClosedGL v9.9999 for TI-89
Coolv  Account Info
(Web Page)

Hmm. This is very promising, although it takes much time to generate.

Reply to this comment    17 May 2006, 16:13 GMT

Re: ClosedGL v9.9999 for TI-89
something1990 Account Info

Those screenshots are simply amazing. It gives me another reason to go out and buy an 89 titanium.

Reply to this comment    17 May 2006, 19:40 GMT


Re: Re: ClosedGL v9.9999 for TI-89
Brian Clymer  Account Info

Ya, it gives me another reason to buy a TI-89, but i have 150 reasons why I shouldn't and they're all the same $$$!

Reply to this comment    17 May 2006, 20:39 GMT

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