[Chimera-users] visualization code optimized using GPU shaders ?

Tom Goddard goddard at sonic.net
Tue Nov 16 09:46:20 PST 2010

Chimera uses a fragment shader to provide per-pixel lighting (called 
"glossy lighting" in Chimera).  This gives shinier smoother specular 
highlights on surfaces.  The same fragment shader does angle-dependent 
transparency.  This means that a transparent surface at an oblique angle 
is more opaque than if the surface is face-on.  This darkens parts of 
the surface which are edge-on giving improved 3-d appearance.


> Dear Chimera developers,
> I try to have a brief overview of molecular programs that can use 
> programmable capabilities of new graphic hardwares (i.e. use of 
> shaders): So, I would like to know if Chimera program have dedicated 
> code that use such shaders to visualize fastly surfaces or to add 
> particular lighting effects..
>    Thank you in advance.
>      Matthieu Chavent.

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