Comment by mumblemumble
6 years ago
It's worth reading the article. "How do you draw black?" is a teaser for a much more insightful and nuanced (and convincing) treatment.
Here's a bit more:
Given additive blending, there’s no way to darken real pixels even the slightest bit. That means that there’s no way to put virtual shadows on real surfaces. Moreover, if a virtual blue pixel happens to be in front of a real green “pixel,” the resulting pixel will be cyan, but if it’s in front of a real red “pixel,” the resulting pixel will be purple. This means that the range of colors it’s possible to make appear at a given pixel is at the mercy of what that pixel happens to be overlaying in the real world, and will vary as the glasses move.
I'm not sure that this isn't solvable, having used a hololens, I don't remember this being an issue, and if it was, it wasn't one that impacted my experience.