Automatically enabling AltiVec [was Re: [PD-dev] [GEM] more cvs commits]

Hans-Christoph Steiner hans at eds.org
Tue Feb 11 04:59:23 CET 2003


Is it possible to make the addition of the altivec flags part of the 
Makefile?  That would make the altivec enhancements idiot-proof for 
idiots like me.

.hc

On Monday, Feb 10, 2003, at 14:01 America/New_York, chris clepper wrote:

> the following commits only affect the OSX version of GEM:
>
> added altivec to some of the yuv objects:
> - yuv_add
> - yuv_adjust
> - yuv_gain
> - yuv_mix
> - yuv_subtract
>
> added a cache calculation function to GemPixObj.h
>
> to compile with altivec use gcc -faltivec -DALTIVEC
>
> speed improvements range from 400 to 725%
>
> the next step is adding some sort of processImageYUVAltivec to the 
> related pix_objects...
>
> cgc
>
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