[Paraview] LIC surface Color by variable lost on Screenshot with offscreen rendering

[Richard GRENON]

Hello.

I found a screenshot problem with LIC in PV 3.10.0-RC, but this problem 
already existed in PV 3.8.

I have a multiblock surface with a friction vector and a pressure 
variable. I color the surface by the pressure variable and I use the LIC 
representation with the friction vector.

When I take a screenshot while the option "Use offscreen rendering for 
screenshots" is checked (this is the default option), the LIC 
representation is OK but the color by the pressure variable is lost, and 
each block has a different solid color. If I uncheck the offscreen 
rendering, I get the expected screenshot with the LIC representation 
colored by the pressure variable.

Following are two screenshots with and without offscreen rendering for a 
simple example: the dataset contains two structured blocks in a Tecplot 
file for a rectangular wing. The dataset has a pressure variable dCp 
from a vortex lattice CFD method, and I used the Calculator filter to 
construct a pseudo friction vector (iHat + 0.25*jHat) to be used by the 
LIC plugin.

Regards.

-- 
 Richard GRENON
 ONERA
 Departement d'Aerodynamique Appliquee - DAAP/ACI
 8 rue des Vertugadins
 92190 MEUDON - FRANCE
 phone : +33 1 46 73 42 17
 fax   : +33 1 46 73 41 46
 mailto:Richard.Grenon at onera.fr
 http://www.onera.fr

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