[vtkusers] fastest render method for spheres...?!

[Marcus D. Hanwell]

On Thu, Feb 4, 2010 at 12:58 PM, Benjamin Frigan <
frigan at itap.physik.uni-stuttgart.de> wrote:

> I forgot to ask the following:
> I know that in OpenGL, when you render a large amount of objects, you
> can use something that is called "Backface Culling". Then, all faces
> that are facing away from the camera because they are always covered by
> faces that are facing towards the camera. Is this implemented in VTK by
> default or do I have to enable it somehow?
>
> I've read that VMD (apparently quite popular molecular visualizer) can
> handle thousands of molecules + connections without any problems, with
> high sphere resolution!!!
>
> VMD makes heavy use of GLSL code to accomplish that. I spent quite some
time working on Avogadro where we were very concerned about spheres and
cylinders. Using display lists/VBOs and fragment shaders you can massively
cut down the number of vertices in a scene.

Marcus
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