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Meanwhile, in NTSC land, people were expanding the colour palette by generating interference that would be interpreted by NTSC TVs as additional colour informat
by mjg59 6y ago
Meanwhile, in NTSC land, people were expanding the colour palette by generating interference that would be interpreted by NTSC TVs as additional colour information: https://en.wikipedia.org/wiki/Composite_artifact_colors https://en.wikipedia.org/wiki/Composite_artifact_colors
PAL wasn't as amenable to this sort of endeavour, so platforms that were more popular outside the US tended to focus on effects like those described here - give the impression of more colour space even when it wasn't there. Efforts like 8088mph (https://trixter.oldskool.org/2015/04/07/8088-mph-we-break-all-your-emulators/ https://trixter.oldskool.org/2015/04/07/8088-mph-we-break-al...) that create much more colour than the hardware was nominally capable of are solidly tied to NTSC, and it's interesting thinking about how much the demo scene ended up split by the behaviour of their TVs.
- talideon 6y agoHere in PAL land, though you'd already know this, you could get a related effect with some palette swapping. If you flipped between colours with the same luminance (pink and green, for example), you'd get an intermediate colour. Mayhem in Monsterland is an example of this that springs to mind.
- mjg59 6y agoYes! http://www.aaronbell.com/secret-colours-of-the-commodore-64/ http://www.aaronbell.com/secret-colours-of-the-commodore-64/ is a great writeup of this. This seems to have become popular much later than NTSC artifact colours, though.
- pezezin 6y agoThe interference you mention applies to horizontal dither patterns, but the article talks about vertical gradients, it's totally different.
- mjg59 6y agoYes, that's my point. Horizontal dither patterns work in NTSC but not PAL - so PAL developers had to come up with alternative approaches to increase the effective colour space.