Thumb Mode
Posted: Sat Nov 28, 2009 3:27 am
Has anyone noticed any significant speedimprovements with disabling thumb mode with irrlicht?
Irrlicht Engine
Official forum of the Irrlicht Engine
https://irrlicht.sourceforge.io/forum/
Thumb Mode
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Posted: Sat Nov 28, 2009 3:08 pm
Probably blaming myself now - but what is a thumb mode?
Posted: Sat Nov 28, 2009 5:34 pm
It was about 10-20% faster for me, but with -O2 or -O3 i had some "over-optimization" problems. Generally it is recommended to disable thumb mode for intensive floating point operations, but it makes binaries bigger.
Suppose we are talking about iphone+xcode
Suppose we are talking about iphone+xcode
Re: Thumb Mode
Posted: Thu Dec 03, 2009 5:34 am
here is a good referencedigijohnny wrote:Has anyone noticed any significant speedimprovements with disabling thumb mode with irrlicht?
http://gamesfromwithin.com/360idev-cran ... ance-to-11
Posted: Thu Dec 03, 2009 5:37 am
I tested in my ipod touch 3, it was about 30% faster.zet.dp.ua wrote:It was about 10-20% faster for me, but with -O2 or -O3 i had some "over-optimization" problems. Generally it is recommended to disable thumb mode for intensive floating point operations, but it makes binaries bigger.
Suppose we are talking about iphone+xcode
I met the same problems about optimization.
Posted: Thu Dec 03, 2009 8:20 am
Yes, matrix, vector operations can recieve great performance boost. I'm just using heavily modified for 2d casual games Irrlicht engine. Everyone has to play with compiler's options to achieve the best performance/stability.