Smooth in open GL
Author
I am trying to have a "smooth" effect on a object created polygon by polygon. I have glShadeModel(GL_SMOOTH) but it seems that I need to do something else to have a smooth looking surface.
NEED HELP
Thanks
Phil.
You need to get the normals for every surface before OpenGL can take the polys and make them smooth.
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Trent (ShiningKnight)
E-mail me
ShiningKnight Games (I had to make one up, to fit in with the rest of you
)
Project: Writing tutorials and code for my OpenGL Game Programming series
OpenGL Game Programming Tutorials
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Trent (ShiningKnight)
E-mail me
ShiningKnight Games (I had to make one up, to fit in with the rest of you
)Project: Writing tutorials and code for my OpenGL Game Programming series
OpenGL Game Programming Tutorials
If you get 1 normal per surface on your mesh you''ll get a flat shading which isn''t exactly "smooth". If you get 1 normal per vertex on your mesh OpenGL will gouraud shade it making the mesh look all pretty and "smooth".
GL_SMOOTH = Gouraud shading.
It''s up to you to give the code the good value to get the desired effect.
-* So many things to do, so little time to spend. *-
It''s up to you to give the code the good value to get the desired effect.
-* So many things to do, so little time to spend. *-
If you use polygon normals, to calculate vertex normals loop through all vertices and calc the average normal vector for all polys the vertex is used in.
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