Atari ST Knowhow Workshop 3

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Atari ST Knowhow Workshop 3 the impossible demo: parallax distorter
Type of Event:	Workshop
From:	2012/02/25 15:00
Till:	2012/02/25 18:00
Recurring:	no
Organizer:	syn2cat
Cost:	0 EUR0 $ 0 £ 0 CHF
Mandatory registration:
Website:	http://wiki.hackerspace.l...
Attendees:	Sid, The metalgamer, Kwisatz, Thierry Log-in to RSVP
Contact Person(s):	Gunstick (mail)
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Location
Where:	Hackerspace, Strassen (11, rue du Cimetière, L-8018 Strassen, Luxembourg)
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The internal workings of the world famous ULM parallax distorter

People always thought that on the ST it was impossible to do this:

Some of these effects we already know from previous workshops:

• you can't do 500 colors at once -> colorshok demo
• you can't play digital samples -> digit demo
• the video signal has always a border around -> overscan demo
• it's impossible to move the whole screen contents -> megascroll
• bitwise shifting is impossible -> distorter
• playfields are an Amiga thing -> playfield demo. NEW! (explanation and theory)
• there are no sprites on the ST -> big sprite demo (not featured in the parallax distorter)

but of course this demo shows all this, at the same time (which is also impossible)

• how the idea was born
• the algorithmic theory behind it
• how to integrate all the effects into one
• how to put all this into overscan
• showing off devpac and turboass
• visually inspecting synchon code
• replace some grafics and sound and see result

Slides

• libreoffice presentation (no pdf because there's a lot of animation)
• git repository (read the checkin comments for more historical stuff and important infos to make the demo run)
• Here is the whole 1h long presentation video