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Pixel vector data type & altivec
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Dalgo
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Join Date: Feb 2000
Location: Storrs,Connecticut, USA
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May 16, 2001, 06:23 PM
 
I'm interested in using altivec to speed up some image rendering that I am doing. I was wondering if anyone knew anything about the vector pixel data type. There doesn't seem to be a description for it. Is it kind of like 3 or 4 u_int8_t's per pixel or what?

Since I haven't seen it mentioned anywhere either, I was wondering if anyone knew how to convert a vector of floats into a vector of ints. Can I just set them equal using the equals operator?

Also, is the only way to access an individual element of a vector by dotting it with a component vector?

If anyone has a clue about any of this I'd be glad to hear from you. The documentation is sparse and cryptic.
     
   
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