Re: OT: Re: 24-bit-per-pixel limit to Gdk RGB ?

[Peter Finderup Lund <firefly diku dk>]

On Wed, 19 Feb 2003, Filip Van Raemdonck wrote:

> Am I missing something? We're talking about display device depths here, so
> if I am not mistaken, the extra bits are always wasted unless they are
> used for higher color depths per R/G/B channel.
> Alpha channels are useful while manipulating data, but how does a monitor
> display an alpha channel?

It doesn't, of course.

Alpha channels are for pixmaps...

> Wouldn't the X server (assuming X11) have blended
> the pixels already and just display everything in those 24 RGB bits (or 24 +
> padding when running in 32 bit mode)?

... /and/ possibly for premultiplied alphas, as far as I can remember.

-Peter

"Of course, I'm not unbiased, but in my humble opinion, I've
 gotten close to something that I can be really proud of."
 -- Knuth on The Art of Computer Programming.