> I don't know exactly how the radeon driver shares the available memory > among the two heads, but if it does that 50:50 as I would assume, the > problem is obvious. > > If each screen gets 8 MB, the 1400x1050x32 screen uses almost 6MB just > for the visible screen. A little bit for pixmap cache, mouse cursor, > perhaps command queue and the available memory soon isn't enough for Xv > (which probably uses double-bufferung for avoing tearing effects). Not > even speaking of memory fragmentation after a while. > > For YV12/I420/NV21/NV12 video, the required memory size for one frame is > calculated as follows: > > Size = width * height * 3 / 2 > > For YUV2/YUVY/YVYV/RGB5/RGB6 it is > > Size = width * 2 * height > > For double buffering, multiply this by 2. Yeah, clear, thanks. Grmbl. _______________________________________________ XFree86 mailing list XFree86@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/xfree86
