If I have time I may take a look at it. One thing I've noticed is that Xv doesn't seem to work too well when I have a 3D app running. Converting Xv to use the CP may help that.
Alex --- Michel D�nzer <[EMAIL PROTECTED]> wrote: > On Thu, 2003-08-14 at 17:45, Alex Deucher wrote: > > If the CP is enabled for acceleration on the radeon, could I also > use > > it to issue Xv commands rather than using mmio? It looks like it > > should be possible. I'd be willing to give it a try. would any > sort > > of special locking be required or can I just issue the commands to > the > > ring like the accel code does? > > The latter. > > > What kind of speed up would I expect if any? > > None I guess, as Xv involves relatively little register write > overhead. > > Even if you mean transferring the image data as the r128 driver can, > I'm > not sure it's worth the effort as direct writes to the framebuffer > seem > to be at least as fast on well-configured current systems. > > That being said, using the CP for all (or as many as reasonable) > register writes would have the benefit of not stalling the CP. Might > yield slightly better performance when mixing stuff which does and > doesn't currently use it. > __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
