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
