[mythtv] direct rendering patch ; garbled OSD

[John Coiner]

I just updated from CVS for the first time in a week. The patch to use 
direct rendering is GREAT -- where I previously had 5% free CPU, there 
is now 25% free. Woohoo!

There is this one problem: the OSD sometimes becomes garbled after it is 
there for a second or two. And sometimes, the presence of the OSD causes 
the picture behind it to become garbled with artifacts that look like 
morphed versions of the OSD. And sometimes, it works fine. This is under 
mpeg4.

My first guess it that this is related to the reduction in memcpys, that 
the OSD can now scribble on a frame that the avcodec is still using to 
compute new frames.

Has anyone else seen this? Does anyone already know why this is happening?

-- john