[Chimera-users] Surfaces

[Tom Goddard]

Hi Hernando,

  Slow rotation of surfaces could mean your surface is simply big.  Is 
it faster in an older Chimera?  What are the Chimera versions and PDB 
identifiers where there is a difference?  Do you have multisampling on 
(Favorites / Viewing Controls / Effects)?  Chimera 1.2540 also uses an 
optimization called vertex buffer objects that produces a 2-3x speedup 
on most graphics cards.  But it could be slower on old cards.  What 
graphics card and driver are you using?  Chimera menu Help / Report a 
Bug... will include that info in the description.

    Tom


hsosa at aecom.yu.edu wrote:
> Hi Elaine,
>
> The problem does not happen all the time. Sometimes I can display 
> surfaces from the pdbs that cause problems. However, after displaying 
> surfaces from these files, running chimera (trying to rotate or move the 
> molecules) becomes very slow.
>
> This is the error message I get when failing to display surfaces:
>
> C:\Program Files\Chimera\bin\mscalc.exe 1.400000 2.000000 1
> Calculation of some surface components failed (code 5).
> Falling back to single-component calculation.
> C:\Program Files\Chimera\bin\mscalc.exe 1.400000 2.000000 0
> Surface calculation failed, mscalc returned code 5
>
> Two pdb files that I've been having problems with are 1JFF and 2P4N.
>
>
> Thanks
>
> Hernando
>