[osg-users] Extra draw calls in osgText?

[Glenn Waldron]

Robert,

While doing some performance testing on the nifty new osgText code, I found
that for every text being drawn there are one or two extra glDrawElements
calls with a count of zero. I was able to eliminate them by checking for an
empty primitive set before this draw call:

https://github.com/openscenegraph/OpenSceneGraph/blob/master/src/osgText/Text.cpp#L1151

It works, but I can't help wondering why the empty primitive sets exist in
the first place. So I figured I'd see if you knew :) I am using the tip of
the OSG 3.6.x branch.

Glenn Waldron / osgEarth
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