Plasma Effect

A place to discuss everything Dragon related that doesn't fall into the other categories.
sixxie
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Plasma Effect

Post by sixxie »

Simon Jonassen created a cool plasma effect on the Dragon/CoCo:

http://www.youtube.com/watch?v=sX_H-0QvN3E

I spent a bit of time over the weekend optimising it (mostly making speed vs accuracy tradeoffs) and here's the results:

http://www.6809.org.uk/dragon/plasma/

Sorry no video yet - maybe Simon will generate one :)

Would be interested to know how it looks on a CRT - emulation & LCD televisions don't bleed the Semigraphics 24 colours as well as an old CRT used to...
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robcfg
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Re: Plasma Effect

Post by robcfg »

Looks nice on a 14" Sony CRT! ;)

I've uploaded a video here: https://www.youtube.com/watch?v=aGGtX6MDqaE

Not a superb quality, but you can make yourself an idea of how it looks :mrgreen:
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Bosco
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Re: Plasma Effect

Post by Bosco »

Very cool!! :D
simon
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Re: Plasma Effect

Post by simon »

it's just an old c64 routine that i ported to the coco II.....

lots more "funkies" to come......

here is a quick vid:

https://www.youtube.com/watch?v=KzTuDq7Qrkw

/Simon Jonassen :-)
sixxie
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Re: Plasma Effect

Post by sixxie »

I've attacked it a bit more, and it's now updating the screen in less then three frames, both PAL and NTSC. Think that's about as far as I can go without major quality loss! Files updated...

And in case anyone wants the history:

Code: Select all

git clone http://www.6809.org.uk/repos/plasma
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robcfg
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Re: Plasma Effect

Post by robcfg »

Made a couple of videos from the new files, this time with a USB capture device.

Download Plasma.mpg

Download PlasmaMirror.mpg

Enjoy!
sixxie
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Re: Plasma Effect

Post by sixxie »

Good captures - thanks!

I have spread the word ;)
simon
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Re: Plasma Effect

Post by simon »

BRILLIANT !!

Glad to see you took to the plasma routine and recooked some stuff for more speed....

/Simon :-)
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snarkhunter
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Re: Plasma Effect

Post by snarkhunter »

... Nice!
I did not think the Dragon could ever become an Amiga wannabe! :mrgreen:
Next step for you to tackle, smart guys: 'Copper lists'!
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tormod
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Re: Plasma Effect

Post by tormod »

Awesomissimo, guys! Looking forward to showing off this as a screensaver at the next vintage computer festival :) Can a key press check be introduced without slowing it down too much?
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