On Fri, 17 Jan 2014 06:09:05 -0600, DRC wrote: > On 1/17/14 5:17 AM, Pierre Ossman wrote: > > As far as the code is concerned, both. The protocol still mandates > > support, hence the simple colour cube to support such clients (of > > which I expect few). > > Let me rephrase. Currently, when does that aspect of the protocol get > invoked? My understanding (which may be incorrect) is that it's a relic > of clients that don't have the ability to do pixel format conversion, so > it would only come into play if the client was forced to use a > PseudoColor visual and couldn't convert, thus requiring the server to do > the conversion. It's been a while since I dealt with this stuff, so I'm > probably getting something wrong.
Fortunately, that's not the entire story of how the protocol works. Original RFB assumes that the server does the conversion, not the client. So let's say we find one of those clients, and it runs on some old crummy machine which needs colour maps. The client will tell the server that a colour map is needed. But it's the server, not the client, that decides the contents of this colour map. So for these clients we'll gladly report back that it can have its colour map. But we'll generate one that is based on a normal true colour system (like 2-2-2, or 3-3-2). The client thinks it is getting a colour map, and the server thinks it is getting true colour. Everyone wins. :) The only problem is when e.g. Xvnc was started with an actual colour map on the server side, and there are all kinds of random values in there. That's the use case that will disappear in this change. Rgds -- Pierre Ossman Software Development Cendio AB http://cendio.com Teknikringen 8 http://twitter.com/ThinLinc 583 30 Linköping http://facebook.com/ThinLinc Phone: +46-13-214600 http://plus.google.com/+CendioThinLinc A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing?
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