Gerd Knorr writes:
> > > I see that the current bttv driver turns the clipping rectangles into a
> > > bitmap, then turns the bitmap into a RISC program. It would be more efficient
> > > to go directly from a list of rectangles to a RISC program, and skip the
> > > bitmap step. When you want to change overlay on a frame by frame basis, this
> > > inefficiency really does make a difference.
> >
> > I didn�t do it :-)
> > The bitmap clipping was added after I stopped bttv development.
>
> Huh? Who wrote it then? /me did'nt, I just optimized it for speed some
> day. I havn't touched the RISC code buffer sizes, it is still 16k or so...
Sorry, you are right. I just checked my last release version from last year.
There is a #ifdef OLDCLIP before my old clipping code.
Then comes the new code with bitmap clipping.
I think I took it from one of the kernel versions of bttv at that time.
I don�t know who wrote it or who was responsible for the bttv
kernel versions. I never had contact to the people who did that.
I just used to merge the interesting parts which sometimes appeared in
them into my driver version so that they wouldn�t diverge too much.
Ralph
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