De : Jasper van de Gronde <th.v.d.gronde@...528...>
À : Inkscape Devel List
<inkscape-devel@lists.sourceforge.net>
Envoyé le : Sam 2 avril 2011, 17h 39min 17s
Objet : [Inkscape-devel] Faster rounding, might break?
Johan mailed me a link to this site:
http://stereopsis.com/sree/fpu2006.htmlBased on the routine proposed there I just implemented faster rounding
in Gaussian blur (the IIR code uses it extensively). In my tests this
speeds up blurring by about 10-20%, not insignificant for such a small
change. However, the procedure does make use of the internal
representation of a double, so I'm a little worried about it breaking on
different architectures.
If you use a non-Intel architecture it would be great if you could try
out the Gaussian blur currently in bzr (it's rev. 10144) and see if
anything
goes wrong.
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