[Xcb] xcb flame, for fun

[Vincent Torri]

It's in cvs

i've also added some code to set the title of a window.

feel free to fix the code, and optimize it

one of the optimizations that I wanted to do was to not use the XCBImage
stuff, but directly use XCBGetImage and XCBPutImage and wirting in the
memory directly. But i've not succeeded

Vincent

On Sun, 1 Jan 2006, Barton C Massey wrote:

> Yes, of course include in the demos!  Great work---looks
> pretty, and demonstrates that a port of an Xlib app needn't
> be *too* onerous.  Passes -O4 -Wall, which is nice.
>
> Thanks much for doing this!
>
> 	Bart
>
> P.S.  If you want an easy fix, rename powerof() to ilog2()
> or somesuch.  That function returns the floor of the log
> base 2 of its argument.  Also, since it's not use in an
> inner loop, let's use a simpler algorithm.  Even if it was,
> the iterated-if-test code can't be fast on a modern
> machine, and it doesn't exit early, so...
>
>   int
>   ilog2 (unsigned int n)
>   {
>     int p = -1;
>     assert(n > 0);
>     while(n > 0) {
>       p++;
>       n >>= 1;
>     }
>     return p;
>   }
>
> There are faster ways, but this one is good for this code.
>
>
> In message <Pine.LNX.4.51.0512311228230.6754 at cartan.iecn.u-nancy.fr> you wrote:
> >   This message is in MIME format.  The first part should be readable text,
> >   while the remaining parts are likely unreadable without MIME-aware tools.
> >   Send mail to mime at docserver.cac.washington.edu for more info.
> >
> > --851511594-1261939651-1136028764=:6754
> > Content-Type: TEXT/PLAIN; charset=US-ASCII
> >
> >
> > hey,
> >
> > i was playing with xcb and xflames. Here is xcb flame :)
> >
> > do you think it's interesting to put it in xcb-demo/test ? The prog needs
> > some love, but it should work (in particular, it's not optimized at all,
> > it does not use mit shm, i think that there are some unneeded variables,
> > etc...)
> >
> > Vincent
> > --851511594-1261939651-1136028764=:6754
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