On 19.01.2009 20:21, Christiaan van Dijk wrote: > Hi all, > > here's a summary of the experiments I have been doing. > > * A RS690 can not render a full-HD image in the vertical blanking time > (@50Hz) but the engine should easily be able to render a full screen > when split in two halves. This is the assumption I'm now working with > and I feel confident about this. >
> * The AVIVO_D1MODE_VLINE_START_END is doing something but it's not clear > what is happening. The register size also puzzles me, there seem to be > 14 bits reserved for start and stop position (IRC blog) while the > vertical counter register only has 13 bits. > > I'm really starting to run out of idea's here, any input would be very > appreciated. The system is intended as a HTPC connected to a full-HD LCD > but is pretty useless with the current performance. Fglrx drivers are > incredible unstable with full-HD and 64-bit platform and also do not > seem to resolve the tearing issue. > Not sure but I think using the fe/re_crtc wait isn't really that robust as you risk missing entire frames - I'd think only using the vline wait would be more robust. I think best easy solution would just be to render the video as a couple (like 4 or so) of quads (that is, full width but 1/4th the height ( thought someone suggested that already somewhere?), with the expectation that the first one is finished rendering after vblank. This ways you'd only need 1 wait per frame and could just draw those couple of quads afterwards. Roland _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
