[mythtv] OSD issue?

[Andrew Mahone]

On Tuesday 10 February 2004 18:47, Isaac Richards wrote:
> So it was ClearUsed() causing the issue?

Just tried changing the ClearUsed() in osd.cpp to Clear(), and it fixes the 
problem.  If there's an easy way to disable Xv, or to dump the contents of 
the Xv surface, I can try to get some screenshots to help characterize the 
problem.

> Please do =)  Same problem would affects optimizing the rest of the osd
> drawing functions..

After a little more thought...  this looks harder.  I reworked the function in 
pow_lut, and I can get it calculated with just one reciprocal, and a bunch of 
adds and multiplies.  The reciprocal needs either a LUT (a fixed, 
one-dimensional one would suffice, and it would be 1kB instead of the 64kB 
pow_lut table), or SSE, which will be a bit of a pain without the nice mmx.h 
macros supporting SSE, and will have a penalty for the word->dword->float 
conversion (and back).  Any thoughts on this?  Am I going down any dead ends 
that you already tried?
-- 
Andrew Mahone
andrewmahone AT eml DOT cc