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[Solved] Fast Alpha Blending -percent based needed
https://www.purebasic.fr/english/viewtopic.php?f=35&t=68513
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Author:  wilbert [ Fri May 26, 2017 6:36 am ]
Post subject:  Re: [Solved] Fast Alpha Blending -percent based needed

Michael Vogel wrote:
yep, but I thought a floating point would slowing it down. More surprising is, why 'n*255/100' is faster than 'n*255 : n/100' and why the same formula is done quicker outside the procedure than inside?!

Floats aren't slow :)

And n = n*255/100 is faster as n = n*255 : n = n/100 because it's less work to do it at once compared to storing the result in between.

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