A little trick needed, to get Blender to smooth-shade an object.

I was recently working on a project in Blender, which I have little experience doing, and noticing that, after my project was completed, the exported results showed flat-shading of mesh-approximations of spheres. And my intent was, to use mesh-approximations of spheres, but to have them smooth-shaded, such as, Phong-Shaded.

Because I was exporting the results to WebGL, my next suspicion was, that the WebGL platform was somehow handicapped, into always flat-shading the surfaces of its models. But a problem with this very suspicion was, that according to something I had already posted, to convert a model which is designed to be smooth-shaded, into a model which is flat-shaded, is not only bad practice in modelling, but also difficult to do. Hence, whatever WebGL malfunction might have been taking place, would also need to be accomplishing something computationally difficult.

As it turns out, when one wants an object to be smooth-shaded in Blender, there is an extra setting one needs to select, to make it so:

Screenshot_20200104_124756c

Once that setting has been clicked on for every object to be smooth-shaded, they will turn out to be so. Not only that, but the exported file-size actually got smaller, once I had done this for my 6 spheroids, than it was, when they were to be flat-shaded. And this last observation reassures me that:

  • Flat-Shading does in fact work as I had expected, and
  • WebGL is not handicapped out of smooth-shading.

 

It should be pointed out that, while Blender allows Materials to be given different methods of applying Normal Vectors, one of which is “Lambert Shading”, it will not offer the user different methods of interpolating the normal vector, between vertex-normals, because this interpolation, if there is to be one, is usually defined by an external program, or, in many cases, by the GPU, if hardware accelerated graphics is to be applied.

Dirk

 

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