Hi all.
Do smoothing groups have an impact on performance?
I am considering having models that are completely unsmoothed in an ios project. Will this draw 2 verts per point and have a noticeable hit on performance?
Our poly counts are already high. 
Cheers
Glenn
The amount of vertices per point will be equal to the amount of traingles meeting at this point. So it could be a variant amount, depending on the topology. The amount of vertices will at least be equal to the amount of triangles*3, if the model is facetted as you describe.
And yes, surely more vertices will have an impact on performance. Whether or not it would still run at acceptable fps’ and so on, is unanswerable at this point 
understood.
that is as i expected. Thanks.