[Bug 17522] pixelDepth and colorDepth do not mean the same thing.

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17522

--- Comment #3 from Glenn Adams <glenn@skynav.com> ---
(In reply to comment #2)
> How are they different?

colorDepth is (or is often interpreted as) bits per component, also called bits
per sample; while pixelDepth often refers to the combination of bits for a
pixel contributed by all applicable samples;

so, e.g., RGBA4444 is 4 bits per sample, or colorDepth 4 but pixelDepth 16;

see https://en.wikipedia.org/wiki/Color_depth for more discussion

at present the definitions of both colorDepth and pixelDepth in Section 5.2 are
wrong

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Received on Tuesday, 18 June 2013 09:10:45 UTC