Are you familiar with dithering? While it may seem like cheating, it really works quite well. It's similar to some LED torches, that use PWM to control brightne

Are you familiar with dithering? While it may seem like cheating, it really works quite well. It's similar to some LED torches, that use PWM to control brightness. They turn on and off really fast, and the more time they spend off, the dimmer the light. Yet you think it's a constant source of light, with a large enough frequency. For dithering, you just need a large resolution.