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

[Vincent Caron]

advertsux wrote:
> Great, almost two-times faster :o)
>
> But 7 FPS is still very low, i will try to understand library a make 
> some performance tuning.

  Depends on what qualify as 'quick'. nuiTest is not a benchmark and 
not a real world sample.


> 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.

  There is something wrong with these numbers : nuiGetVal() only get 
called in widets constructors, it only affects the initial frame. Also 
only nuiLabel uses the newest nglFontBase API and it's heavily cached, 
calls from nglFont1 (in nuiEditText for instance) should be much more 
expensive.