Benjamin, > > And please do not get me wrong. I do not want to stop your efforts to > improve > the performance of OSG; far from it!
Not necessarily my efforts - I'm just being the messenger...! But putting assembler code into the > project decrease the readability and serviceability of the code. Absolutely. > Furthermore > it might be that it does not improve the speed at all. I agree, and this is an oft quoted issue. Here, I think, only testing (and experience) will help. For example, is it worth performing a single Vec3f cross product in SSE? Probably not. But as a counter example, over on osg-submissions (EDIT - and now here), one user (James) is getting large performance gains from having SSE'd the invert_4x4 function. I just want to suggest > that you try to exhaust the possibility of modern compilers as much as > possible. If you see any bottlenecks after that, it might make sense to > include manual performance tuning. I agree. This call-for-ideas was motivated by an understanding that several people are pushing in the same direction, and it would be perhaps beneficial to make use of this push. David
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