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Old 24 February 2021, 00:30   #1
eXeler0
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Hologon by The Electronic Knights (OCS Demo)

Man, that's one impressive OCS demo.
Imagine seeing this one running on an A500 in the computer store in 1987..

[ Show youtube player ]
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Old 24 February 2021, 01:04   #2
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CopperFills are back!
[seen a similar effect in several daJormas video and i think is a copperfill lightly misplaced to give the effect of a gouraud surface]

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Old 24 February 2021, 01:37   #3
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It would be interesting what techniques he used are the results of more recent algorithms. Dezecrator had some good beats for back in the day. I don't know what year he released introfonty, or when fred released the mod for the agile cracktro but those were some good techno beats for early days.

Do coders use the PC now for compressing as it is faster to calculate the tables needed for maximum compression?
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Old 24 February 2021, 02:01   #4
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Have to say thats mega impressive, especially rhe framerate(apart from inside the cube but thats understandable)
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Old 24 February 2021, 02:05   #5
lesta_smsc
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Quote:
Originally Posted by eXeler0 View Post
Man, that's one impressive OCS demo.

Imagine seeing this one running on an A500 in the computer store in 1987..



[ Show youtube player ]
Excellent! That site is loaded with demos and some ridiculously small files that I was first introduced to by @simon_m74 !

The following link should take you to the Amiga ones:

https://www.pouet.net/prodlist.php?p...ga%20OCS%2FECS

I'm still in awe how they do it but would be interesting to see how these look on my CRT!
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Old 24 February 2021, 05:40   #6
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Quote:
Originally Posted by lesta_smsc View Post
The following link should take you to the Amiga ones:

https://www.pouet.net/prodlist.php?p...ga%20OCS%2FECS
Click on the "thumb up" on that list and it will sort them by highest rated first, so you'll see all of the classics right there and then. Enjoy!
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Old 24 February 2021, 09:12   #7
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Quote:
Originally Posted by lesta_smsc View Post
Excellent! That site is loaded with demos and some ridiculously small files that I was first introduced to by @simon_m74 !

The following link should take you to the Amiga ones:

https://www.pouet.net/prodlist.php?p...ga%20OCS%2FECS

I'm still in awe how they do it but would be interesting to see how these look on my CRT!
You must try on your CRT. On my Panasonic 21" TV the demo looks stunning!
It is one of the best A500 demos ever done!
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Old 24 February 2021, 16:59   #8
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That is one fucking AMAZING demo!

Sceners are really pushing the envelope with A500 demos lately, with classics like The Fall, De Profundis, Eon and now this.
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Old 25 February 2021, 00:13   #9
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Great stuff (as mentioned in the WHDLoad request thread)

Quote:
Originally Posted by eXeler0 View Post
Man, that's one impressive OCS demo.
Imagine seeing this one running on an A500 in the computer store in 1987..
I actually coded a demo for a computer store (=Amiga store) in 1988 \/ I was paid in goods so the store owner could deduct ... 512k RAM and an external drive. Anyway, was a big deal for me at the time.

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Originally Posted by redblade View Post
Do coders use the PC now for compressing as it is faster to calculate the tables needed for maximum compression?
This demo likely uses Bifat's own compression algorithm, but IDK for sure. I see no PC port for the compressor. For recent demos, he's tethered an Amiga to WinUAE and sends data over a cable to run it.

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You must try on your CRT.
Some scenes rely on tight framerate and 25Hz flicker, and so will look better on a PAL CRT than PC CRT or LCD, because of the 50Hz framerate, and thicker phosphor layer retaining the image, akin to how human eyes work. (see blurbusters.com)

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pushing the envelope
Eon
This is completely false, according to TBL devblog.

I would contrast that demo with this demo.
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Old 25 February 2021, 03:20   #10
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Great stuff (as mentioned in the WHDLoad request thread)



I actually coded a demo for a computer store (=Amiga store) in 1988 \/ I was paid in goods so the store owner could deduct ... 512k RAM and an external drive. Anyway, was a big deal for me at the time.





This demo likely uses Bifat's own compression algorithm, but IDK for sure. I see no PC port for the compressor. For recent demos, he's tethered an Amiga to WinUAE and sends data over a cable to run it.





Some scenes rely on tight framerate and 25Hz flicker, and so will look better on a PAL CRT than PC CRT or LCD, because of the 50Hz framerate, and thicker phosphor layer retaining the image, akin to how human eyes work. (see blurbusters.com)





This is completely false, according to TBL devblog.



I would contrast that demo with this demo.
Considering how much these items cost in today's money, you got paid well for it lol!

As for the CRT, well I ran it on my 15khz LCD monitor as it was connected to my A600 (ADF written by Greaseweazle on a NOS 720KB floppy disk) - looked nice but considering I'm not a fan of pixels and prefer CRT, hopefully get to test this on weekend when I've managed to move the 28" 4:3 CRT TV back to its original location lol

Can the code not be compiled on PC from source?...
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Old 25 February 2021, 21:55   #11
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Quote:
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I actually coded a demo for a computer store (=Amiga store) in 1988 \/ I was paid in goods so the store owner could deduct ... 512k RAM and an external drive. Anyway, was a big deal for me at the time.


This demo likely uses Bifat's own compression algorithm, but IDK for sure. I see no PC port for the compressor. For recent demos, he's tethered an Amiga to WinUAE and sends data over a cable to run it.
Ah thanks for that, I see in some posts that people are using pythons to code quick tools. I also thought that maybe for colour reduction tools using the PC might be better.

Yeah its amazing how pricey those external drives were when they first came out. Did that 512K come with a clock as well?
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Old 26 February 2021, 01:37   #12
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Just to say, I've been going through a few of these on pouet for the Amiga and it looks great! I'm simply writing the ADF using my Greaseweazle for a seamless way to get the disk over to my A600 lol. Still waiting for my CRT to return so I can do a test of both real hardware vs WinUAE!

https://www.pouet.net/prod.php?which=1483 and https://www.pouet.net/prod.php?which=394

How does it render the 3D objects so quickly!?

Last edited by lesta_smsc; 26 February 2021 at 01:49.
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Old 26 February 2021, 04:31   #13
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My question is how do we "emulate" the CRT experience on an LCD?!
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Old 26 February 2021, 09:50   #14
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How does it render the 3D objects so quickly!?
If you mean the reflective vector objects, they're "just" stencil vectors, i.e. instead of filling with a solid color, you fill with a bitmap - it does look rather convincing, though
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Old 26 February 2021, 10:16   #15
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The furthest I got with my coding was my own 3d was outline only with no hidden line culling... This is inspiring me to try and do more, but it's a mountain to climb! Are there any good guides to fast 3d routines out there that people know of?
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Old 26 February 2021, 11:14   #16
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Quote:
Imagine seeing this one running on an A500 in the computer store in 1987..
Ahahah i thought about the same thing ,mainly when you think that peoples were impressed by the boing demo at the time .
This demo is really impressive, good effects, and well paced,add the really good music too .

Last edited by touko; 26 February 2021 at 11:19.
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Old 27 February 2021, 09:56   #17
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My question is how do we "emulate" the CRT experience on an LCD?!
It is possible or so I'm told by using a special shader (used by MAME community) but I can't imagine you could get that clarity and phosphorous appearance without truly cathode rays hitting that panel!
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Old 27 February 2021, 10:27   #18
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It is possible or so I'm told by using a special shader (used by MAME community) but I can't imagine you could get that clarity and phosphorous appearance without truly cathode rays hitting that panel!
I miss my old 19" 2560x1600 CRT and phosper glow.

If someone can recommend a shader that makes LCD look "almost" as good as this demo on CRT, please share. Need a side by to verify it.

Even OLED could use some light photons hitting the screen to make it look wow.
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Old 08 March 2021, 20:49   #19
lesta_smsc
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Quote:
Originally Posted by Valken View Post
I miss my old 19" 2560x1600 CRT and phosper glow.



If someone can recommend a shader that makes LCD look "almost" as good as this demo on CRT, please share. Need a side by to verify it.



Even OLED could use some light photons hitting the screen to make it look wow.
Try HLSL:

[ Show youtube player ]
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Old 14 March 2021, 18:45   #20
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I've just tried running this on my 1000 - it loads 5 tracks, I get a flash of a graphic on a screen and then hang... Same disk works on my rev5 motherboard 500 with the same disk drive.
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