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RGB Plasma by Omega
screenshot added by evil on 2006-12-14 09:00:52
platform :
type :
release date : may 1991
release party : Brainless Institute Party 1991
compo : atari demo
ranked : n/a
  • 14
  • 3
  • 0
popularity : 49%
  • 0.82
alltime top: #16830
added on the 2006-12-14 09:00:52 by evil evil

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Probably the best plasma ever made on the ST. Too bad it's just a single screen without music.

Worthless knowing: During the compo at the party, Omega sang "Ekorren satt i granen" to compensate for the lack of music.

A short Google Video clip of the plasma
rulez added on the 2006-12-14 09:03:30 by evil evil
Quite nice indeed.
:p if only the sin/cos talbes add more precision
rulez added on the 2006-12-14 09:23:15 by p01 p01
p01: Remember you can only sync the x-position by one nop (4 pixels)
added on the 2006-12-14 09:41:02 by evil evil
I know and I realize doing (more) fixed point calculation would eat quite a few precious nops.

But one can clearly see on the screenshot some glitches due to adding several ( not so precise ) cos/sin tables.

I'm more playing the devil's advocate here because I can only think of one as/more impressive plasma ... alas I can't remember the name of screen. It featured some so called x,y and z distortions but only had pure black to red/green/blue gradients mixed together.
added on the 2006-12-14 10:05:33 by p01 p01
Perhaps the one by Overlanders in the Lightning megademo ? That's a lot smaller than this one, but it's very nice, I agree :)

However, when thinking closely, as this one mixes more than one layer you can't do the "nop" trick to sync down to four pixels either, so it's probably twelve pixel x-accuracy per individual layer, and a possibly "main" movement for all layers at four pixels accuracy.
added on the 2006-12-14 10:12:48 by evil evil
good point on the 1nop accuracy of the 'main' wave VS 3nop accuracy per layer.
added on the 2006-12-14 13:39:15 by p01 p01
"oh we forgot the music..."
added on the 2006-12-14 14:39:42 by tempest tempest
hempest: That happen, trust me. And not only to the best of us :p
added on the 2006-12-14 15:32:25 by p01 p01
Very good effect!
rulez added on the 2006-12-14 16:33:50 by BITS BITS
Excellent, I did not know this one!
I guess they did not include any music to have the highest number of scanlines left at the bottom for the plasma sync.
rulez added on the 2006-12-15 02:10:54 by keops keops
the plasma looks very good
added on the 2006-12-15 02:28:16 by tempest tempest
Impressive plasma!
rulez added on the 2006-12-15 02:33:43 by Buckethead Buckethead
i guess they did not include music, to avoid my thumb up !
added on the 2006-12-16 00:37:47 by Zweckform Zweckform
rulez added on the 2006-12-24 11:24:59 by ecureuil ecureuil
great plasma!
rulez added on the 2007-07-18 12:40:22 by RA RA
rulez added on the 2008-07-22 13:13:46 by seppjo seppjo
rulez added on the 2008-11-08 20:54:15 by parcelshit parcelshit
Wow, awesome plasma!!!
rulez added on the 2009-01-01 20:12:30 by Optimus Optimus
Lovelly one ;-)
added on the 2009-03-05 09:28:39 by chuckdun chuckdun
Great one!
rulez added on the 2009-12-30 13:59:41 by micdune micdune
rulez added on the 2014-01-18 21:43:42 by Daniel Daniel
Quality classic!
rulez added on the 2020-09-06 20:05:10 by spkr spkr

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