Re: [Plib-devel] [PATCH] crease for ac3d files and speedup

[Mathias <Mat...@gm...>]

On Freitag 08 Oktober 2004 15:43, Steve Baker wrote:
> Mathias Fr=F6hlich wrote:
> > During the past days I have done some profiling on flightgear. One final
> > outcome of that work was, that most time is spent in ssg routines (yes,
> > ssg not OpenGL!!).
>
> That's because you have a graphics card that executes almost 100% of Open=
GL
> functions off on separate hardware.  When you eliminate OpenGL, what other
> functions could possibly consume much time?   It has to be SSG - so that
> comes as no suprise at all.
Yep, this is right for functions like ssgLeaf::draw_geometry or ssgLeaf::dr=
aw.=20
I had expected to see them on the top of the profile list.

But not for functions only operating on ssg*'s datastructures like=20
ssgVtxTable::getNumColours(), ssgBranch::recalcBSphere(),=20
ssgEntity::dirtyBSphere(), ssgVtxTable::getNumTexCoords(),=20
ssgVtxTable::getNumVertices() and ssgVtxTable::getNumNormals(). Which are a=
ll=20
in the top ten of that profile run.
They account that much because of the amount of leaf nodes with only few=20
vertices in each node.

   Greetings

            Mathais

=2D-=20
Mathias Fr=F6hlich, email: Mat...@gm...