Path: chuka.playstation.co.uk!news
From: James Rutherford <hexheroes@writeme.com>
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: Re: How do I manipulate Pixels?
Date: Tue, 11 Aug 1998 16:02:01 +0100
Organization: The Hex Heroes
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Chris Searle wrote:

> As and example how would I rereate TV static, ie randomly setting each > pixel as black or white ( rand()%2 , on or off).

(sorry, no source! ;) )

The best way I can think of is by predefining an area in VRAM (size
128x128?) full of randomly coloured pixels - possibly using a LoadImage
method as outlined above, and then setup smaller GsSPRITES (eg 32x32) to
cover your screen.

You can then alter the sprite u and v co-ordinates semi-randomly
(slightly faked so that they never point to the same area on consecutive
frames).

Should be fast and fairly fluid - you can also have fades and
transparency effects.

If I were you, I'd steer clear of colour cycling - unless you're really
clever about it, it tends to look naff.

James (~mrfrosty)