This fake demo is not possible on ECS... But AGA? - Page 4

s2325 · 15 April 2012, 09:21

I saw today demo which I thought was not possible on Amiga 500 - Siesta by Axis: http://bitworld.bitfellas.org/demo.php?id=10983 So even after all these years you can not be sure.

s2325 · 23 March 2014, 14:17

video of Siesta [ Show youtube player ]

Hewitson · 23 March 2014, 15:04

Why did you think it's not possible? Not many colours are used.

s2325 · 23 March 2014, 15:08

I never saw similar demo for A500. Maybe some effects are just some color cycling tricks.

StingRay · 23 March 2014, 15:43

This is heavily inspired by Darkroom which was coded by Dweezil. The effects are quite cool for 68000/A500, there sure as hell is no color cycling used here! Good intro by Stelios (RIP!) as usual.

mihcael · 01 February 2017, 00:09

Quote:

Originally Posted by Akira

Quote:

Originally Posted by Mrs Beanbag

the real purpose of the code is for people to look at the code

...

*looks at code real hard*

...

LOL, i was reading through this old thread and this comment cracked me up, thanks Akira.

heavy · 06 February 2017, 19:56

Quote:

Originally Posted by Galahad/FLT

The shadowed sine scroller has been done to death on Amiga.

by now, I found 3 or 4 intros on bitworld with that kind of sine scroller.
blue velvet pack menu/tech
another intro/the gang
Xion Intro/Cycron

edit:
1989 collection intro/Cryptoburners
New Stuff/Abnormal
Dolly Mixture #9 Pack intro / Anarchy - Dizzy Dream 14 intro/anarchy
eddie's return/laser dance
Malzbier Trinker/Paranoid
New Import/sector 4

(no sinescroll : space harrier/traitor, silents acid syndrome)

the rasterbars effect has been done to death on Amiga
but not really with this kind of gradients ? I don't remember ever seen it.
some examples ?

the starfield could be done precalc bob smaller to larger
with a copper mirror effect for the second middle of screen (dual playfield ?). do you know intros with this kind of starfield (perhaps less stars) ?

DanScott · 06 July 2023, 12:06

Well.. it was done...

[ Show youtube player ]

alexh · 06 July 2023, 12:12

Thats cool. I wonder if the inspiration really was this thread?

Thorham · 06 July 2023, 13:11

Quote:

Originally Posted by DanScott

Well.. it was done...

Unsurprisingly it's perfectly possible (except for the super smooth horizontal gradients).

rothers · 06 July 2023, 13:21

edit: Lol I spoke too soon, didn't see Dan's post.

Nice work.

jizmo · 06 July 2023, 13:53

Quote:

Originally Posted by Thorham

Unsurprisingly it's perfectly possible (except for the super smooth horizontal gradients).

I would not say unsurprisingly so – a lot of really clever programming going on here.

Torti-the-Smurf · 06 July 2023, 22:33

Just Curious.

What Specs needed the PC to run this Demo ?

Quote:

Originally Posted by s2325

I never saw similar demo for A500. Maybe some effects are just some color cycling tricks.

This had similar effects imo and all was full frame 50fps. (the youtube video can´t do it justice)

[ Show youtube player ]

(the Soundtrack is so yummy

i love this OCS Demo

)

Greetings

Rotschi · 09 July 2023, 12:24

Very interesting and decent piece of code by Mrs Beanbag (catchword: sine scroll). I definitely learned something; I tried to comprehend the minterm but was unable to make head or tail of it until I noticed that chA and not chC is set to destination address. Stupid me!

Pseudo 3D stars could be used to get a high number of moving stars per frame since they don't need costy 'divs z' or 'muls 1/z' operations.

And copper jumps could be used for the color gradient bars and their cycling, couldn't they?

arpz · 15 July 2023, 00:53

I just came to update you all but of course it's already been done! I too wondered if this thread was the inspiration since the original thing seemed pretty obscure. Anyway, love this new one!

Photon · 16 July 2023, 02:00

Quote:

Originally Posted by DanScott

Well.. it was done...

[ Show youtube player ]

It is similar to original "not possible" post. If you pre-render and just switch buffer pointers, all is possible, and platform doesn't really matter.

I.e. stars are anim and this frees up the rest of the machine to do a standard sine scroll. Sine scroll record = Blu Sky, still.

Smooth horizontal copper bars are certainly possible on OCS if they are continuously moving in one direction. The blending effect was shown in Atomix cracktro 1990, where the blend appears as a twist even. And the rest of it takes half a scanline by bitplane interference!

This is no criticism, new ideas are good. The first time and maybe the second.

Then it's expected and the coder with the idea is in the dog house again. Truth.

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15 April 2012, 09:21	#61
s2325 Zone Friend Join Date: Jun 2006 Location: Gargore Age: 43 Posts: 17,789	I saw today demo which I thought was not possible on Amiga 500 - Siesta by Axis: http://bitworld.bitfellas.org/demo.php?id=10983 So even after all these years you can not be sure.

23 March 2014, 14:17	#62
s2325 Zone Friend Join Date: Jun 2006 Location: Gargore Age: 43 Posts: 17,789	video of Siesta [ Show youtube player ]

23 March 2014, 15:04	#63
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,772	Why did you think it's not possible? Not many colours are used.

23 March 2014, 15:08	#64
s2325 Zone Friend Join Date: Jun 2006 Location: Gargore Age: 43 Posts: 17,789	I never saw similar demo for A500. Maybe some effects are just some color cycling tricks.

23 March 2014, 15:43	#65
StingRay move.l #$c0ff33,throat Join Date: Dec 2005 Location: Berlin/Joymoney Posts: 6,863	This is heavily inspired by Darkroom which was coded by Dweezil. The effects are quite cool for 68000/A500, there sure as hell is no color cycling used here! Good intro by Stelios (RIP!) as usual.

06 July 2023, 12:06	#68
DanScott Lemon. / Core Design Join Date: Mar 2016 Location: Tier 5 Posts: 1,211	Well.. it was done... [ Show youtube player ]

06 July 2023, 12:12	#69
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,335	Thats cool. I wonder if the inspiration really was this thread?

06 July 2023, 13:21	#71
rothers Registered User Join Date: Apr 2018 Location: UK Posts: 487	edit: Lol I spoke too soon, didn't see Dan's post. Nice work.

09 July 2023, 12:24	#74
Rotschi Registered User Join Date: Apr 2023 Location: "Hamcastle" Posts: 20	Very interesting and decent piece of code by Mrs Beanbag (catchword: sine scroll). I definitely learned something; I tried to comprehend the minterm but was unable to make head or tail of it until I noticed that chA and not chC is set to destination address. Stupid me! Pseudo 3D stars could be used to get a high number of moving stars per frame since they don't need costy 'divs z' or 'muls 1/z' operations. And copper jumps could be used for the color gradient bars and their cycling, couldn't they?

15 July 2023, 00:53	#75
arpz Registered User Join Date: Oct 2011 Location: Southampton, UK Posts: 38	I just came to update you all but of course it's already been done! I too wondered if this thread was the inspiration since the original thing seemed pretty obscure. Anyway, love this new one!

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