Quote:wouldn't it still be nice to add it in anyway for the retro gamers who prefer to play exactly as they did in their childhood?
You know that the GCN and Wii were designed to render natively in progressive right? Unless it's a really retro game that exploits the field rendering on CRT TVs, which a computer can't replicate anyway, you can still emulate any console game "exactly as they did in their childhood" by playing in progressive scan with zero artifacts (exception being PCSX2, that's complicated).
Interlacing was a hack developed to increase FPS without additional bandwidth use on analog signals for antennas. I'm not sure it would provide any GPU speed improvements. It's not like reducing the FPS, the GPU would still have to render the whole scene every frame, but then chop it up into pieces and display only part of the scene each frame.
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