[Mesa3d-dev] mmx blend code bug

[Brian P. <br...@va...>]

Using a test program provided by Allen Barnett I've found that there's a
bug in the _mesa_mmx_blend_transparency() function in src/X86/mmx_blend.S.

It appears that if mask[0] is zero then the next pixel (element [1]) isn't
always blended as it should be.

I don't remember who wrote this code and I'm not inclined to debug it myself.
If anyone wants to take a stab at fixing it I'll send you the test program.
Otherwise, I'm just going to disable the MMX code.

-Brian