A 16-bit display, not 15? Well, no wonder it can't do pure greys sensibly then. That would certainly seem like a plausible cause to me. And it doesn't seem too surprising to me, either, that the CSS renderer and the PNG renderer disagree on the best way to approximate a pure grey with the available colours: the PNG renderer is already going to be prepared to dither where necessary, whereas the CSS renderer would have to go to some effort to include dithering code so it will just approximate to the nearest solid colour.
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Date: 2007-03-07 01:50 pm (UTC)A 16-bit display, not 15? Well, no wonder it can't do pure greys sensibly then. That would certainly seem like a plausible cause to me. And it doesn't seem too surprising to me, either, that the CSS renderer and the PNG renderer disagree on the best way to approximate a pure grey with the available colours: the PNG renderer is already going to be prepared to dither where necessary, whereas the CSS renderer would have to go to some effort to include dithering code so it will just approximate to the nearest solid colour.