[x264-devel] PPC vector code problem: wrong output

[maaanuuu at gmx.net]

Hello,

I noticed the output of Altivec code doesn't match scalar code.  
(480x260 video, standard settings, gcc 4.0.1, apple build 5493). I  
tracked the problem down to x264_satd_8x8_altivec called in  
x264_slicetype_mb_cost in slicetype.c, line 440. I think pix1 loads  
cross 16 byte boundaries, so VEC_DIFF_H fails to load pix1 properly.

As I don't know how to fix it the best way, I can't provide a patch.

Regards,
Manuel