Graphics/Discussion/OpenGL ES/GL_SHININESS material parameter dramatically affects perfomance using devg-extreme2/List of Posts
 
Forum Topic - GL_SHININESS material parameter dramatically affects perfomance using devg-extreme2:
   
Update
Mike Gorchak
05/02/2009 1:26 PM
post28562
GL_SHININESS material parameter dramatically affects perfomance using devg-extreme2   
If GL_SHININESS is set to default 0.0f parameter all work well, if I tried to slightly increase it to 1.0f I can see 
almost twice perfomance loss, if I set it to 5.0f I can see 5x perfomance loss.

Why GL_SHININESS affects perfomance so much ?
Etienne Belanger(deleted)
05/04/2009 9:34 AM
post28614
Re: GL_SHININESS material parameter dramatically affects perfomance using devg-extreme2   
I would expect a difference in performance between GL_SHININESS set to 0 and GL_SHININESS set to other values because in
 the first case, we can avoid the exponentiation. However, it does seem odd that the performance would be proportional 
to the GL_SHININESS.

Was this measured using devg-extreme2 ?
Mike Gorchak
05/04/2009 10:28 AM
post28623
Re: GL_SHININESS material parameter dramatically affects perfomance using devg-extreme2   
> Was this measured using devg-extreme2 ?

Yes.

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