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Bad NIH, good NIHBad NIH, good NIHPosted Mar 10, 2013 10:42 UTC (Sun) by nix (subscriber, #2304)In reply to: Bad NIH, good NIH by Wol Parent article: Canonical reveals plans to launch Mir display server (The H)
No, it doesn't require copying the video display at all. It requires protocol roundtrips (request/response), though, before the window is even mapped: and if the client is badly written it can require a *lot* of them. And there are a lot of badly written clients, since all too many people don't bother to test their programs on remote X at all, brushing off bug reports from people like me with "don't do that then".
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Bad NIH, good NIH Posted Mar 10, 2013 11:01 UTC (Sun) by dlang (✭ supporter ✭, #313) [Link]
the many round trips at startup are largely to figure out what options are supported on the display side (since X has existed so long, may 'obvious' things, like color, are optional), and a substantial part of the speedup that approaches like nx provide is to short circuit these round trips.
This is very similar to what the 'wan accelerator' appliances do to the windows networking protocol to make it tolerable over high latency links (same problem, too many round trips)
While the fashion right now is for every app to render things as a complete bitmap, that's just a fashion of what is considered 'good' this year, that swings back and forth over time, in part depending on the available processing power at each end.
Bad NIH, good NIH Posted Mar 10, 2013 20:17 UTC (Sun) by raven667 (subscriber, #5198) [Link]
> While the fashion right now is for every app to render things as a complete bitmap, that's just a fashion of what is considered 'good' this year, that swings back and forth over time, in part depending on the available processing power at each end.
Think this statement is a gross mischaractization of the last 30+ years of graphics development with a history of hard won experience with apps, operating systems and hardware that can't be hand-waved away as mere "fashion". Where is the yearly "swing" in the evolution of serial terminals to framebuffers to fixed function accelerators to programmable GPUs, which has taken decades? If there is anything cyclic, computing has existed for too short a time to see it
The best you can say is that the approach of sending high level drawing commands across the wire like X or NeWS is what is being implemented with HTML5 applications using JS, DOM, CSS and WebGL
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