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 Apr 30, 2009 - 09:13 PM - by Michael
* Simulating a CRT

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PC Games/Hardware/Microsoft
Here's something a long time coming - a project to make emulation better by re-creating the oddness of a CRT (bleed, distortion, etc) in emulation.

Afterimage. The phosphor glow padding a bit of time to "burn off" and leaves more of an afterimage on the human retina compared to an LCD display. As a result, images might linger after they had moved or changed. Atari programmers took advantage of this feature to "flicker" objects between frames.

Color Bleed. The edges of sprites and scanlines appear as sharp edges in an emulator. But on a television, luminance from these areas would bleed into neighboring sectors, both softening the hard edges of pixel-objects and blending colors together.
We used to call this "poor man's anti-aliasing", and it's the main reason old games on an emulator often look a lot more pixelated than you remember them being as a kid.
 

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