CRT emulation of some kind is sometimes necessary to accurately render effects that were intended by the original artists. For example, this waterfall transpare

CRT emulation of some kind is sometimes necessary to accurately render effects that were intended by the original artists. For example, this waterfall transparency: https://www.youtube.com/watch?v=s4QOHe4bOZc https://www.youtube.com/watch?v=s4QOHe4bOZc Then there's the fact that a lot of early console artwork was designed to be output on a composite video cable instead of as separate RGB channels, so the crosstalk may need to be emulated to get the right color blending: http://www.chrismcovell.com/gotRGB/rgb_compare.html http://www.chrismcovell.com/gotRGB/rgb_compare.html (The reduced effective spatial resolution is often more of a detriment, so plenty of games do look much better in pure crisp RGB from an emulator.)