Re: [ngl-devel] Very nice but very slow

[advertsux]

Great, almost two-times faster :o)

But 7 FPS is still very low, i will try to understand library a make 
some performance tuning.

I started with quickly set profiler and got these results:

       Func          Func+Child           Hit
       Time   %         Time      %      Count  Function
---------------------------------------------------------
   1252,490  12,2     1305,109  12,7    15819 nuiGetVal(class 
nuiXMLNode *,class nglString,float) (nuiflags.obj)
   1205,943  11,8     1249,593  12,2     3360 
nuiGLDrawContext::DrawShade(class nuiRect const &,class nuiRect const &) 
(nuigldrawcontext.obj)
   1143,250  11,1     1143,250  11,1    26956 
nglFontBase::GetGlyphInfo(class nglGlyphInfo &,unsigned int,enum 
nglFontBase::GlyphType) (libngl.dll)

More than 30% of time was "wasted" these functions. I think especially 
nuiGetVal can't get so much. I'm going to find some sort of "caching" 
for this function.

Martin


Sebastien Metrot wrote:

> Hi!
>
> Thanks to me being under heavy jet lag, I found some time to fix a lot 
> of performance issues in NUI tonight. All of the problems had to do 
> with text rendering. There are still some problems left and I think 
> i'll find some time to do it soon! (nuiEditText needs to be rewritten 
> using nglFontLayout, nuiFontBase should be a bit smarter when it comes 
> to texture management and rendering, etc...).
>
> I'm adding these changes to the CVS right now.
>
> Let me know if things are getting any better for you. (text rendering 
> is what is really killing nui right now, we really need to implement a 
> better solution to render a collection of glyph FAST, it's easy but 
> still has to be done ;).
>
> Sebastien
>
> advertsux wrote:
>
> > I'm running Windows XP Proffesional, Detonators 52.70. I understand 
> > that NUI is not fully optimised, but score is very low. I'm going now 
> > to experiment a little bit more with NGL - maybe something is wrong 
> > with my configuration.
> >
> > Martin
> >
> >
> > Sebastien Metrot wrote:
> >
> > > Hi Martin!
> > >
> > > I haven't had much time to work on NUI lately and there sure have 
> > > been some speed degrading changes in the last few month. I plan to 
> > > track them down and fix. Of course we could also use some help as 
> > > profiling rendering and other CPU hogs is not trivial.
> > >
> > > What OS are you using?
> > >
> > > Sebastien/MeeLoo
> > >
> > > advertsux wrote:
> > >
> > > > Hi guys,
> > > >
> > > > first of all let me thank you for NGL/NUI library. I was excited by 
> > > > it's (NUI) screenshots. So i download 0.7.10 version a try to 
> > > > compile it. About six hours of experiments ended up in reading mail 
> > > > archive, configuring CVS, downloading fresh sources, exploring new 
> > > > README and finally installing stlport, againg compiling and viola - 
> > > > i got it :o) Than i tried nuiTest and i see some problems with 
> > > > speed. Am I getting something wrong or 5 FPS are normal on WXP, 
> > > > MSVC6, ATHXP 2000+ and GF4 Ti4200?
> > > >
> > > > Regards,
> > > >
> > > > Martin Sliwka
>
>
>
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