Hi David, thanks for the quick reply. I can confirm opacity changes work if I set the actor representation to Solid Color.
It would be great if the new release could have the aoTransparencyEnabled flag as something that can be switch on and off using a tick Kind Regards Ste 2017-09-07 14:39 GMT+01:00 David E DeMarle <[email protected]>: > A couple of observations: > > 1) for surface rendering with color mapped array, vtk's OSPRay interface > we does not yet respect transparency (either at the actor level or in the > alpha channel of the colormap). If you use a solid color for the entire > actor (PV GUI color choice is "Solid Color" instead of one of the arrays in > the data) then we do respect opacity. > > 2) we turn on aoTransparencyEnabled whenever there are volumes in the scene > https://gitlab.kitware.com/vtk/vtk/blob/master/Rendering/ > OSPRay/vtkOSPRayRendererNode.cxx#L870 > If your scene doesn't have volumes in it, then you'll need to compile from > source and enable that generally (remove the if conditon). > > Feel free to submit patches or bug reports to for either of those things > to help us remember to improve them. > > > > > > > David E DeMarle > Kitware, Inc. > Principal Engineer > 21 Corporate Drive > <https://maps.google.com/?q=21+Corporate+Drive+Clifton+Park,+NY+12065&entry=gmail&source=g> > Clifton Park, NY 12065 > <https://maps.google.com/?q=21+Corporate+Drive+Clifton+Park,+NY+12065&entry=gmail&source=g> > -8662 > Phone: 518-881-4909 <(518)%20881-4909> > > On Thu, Sep 7, 2017 at 2:57 AM, Stefano Capra <[email protected]> > wrote: > >> Good morning, >> I am running ParaView 5.4.1-Qt5-OpenGL2-Windows-64bit and I was >> wondering if there is a way to activate the opacity rendering while using >> OSPRay ambient occlusion >> >> In the OSPRay website I have found this: >> "New SciVis renderer parameter aoTransparencyEnabled, controlling whether >> object transparency is respected when computing ambient occlusion (disabled >> by default, as it is considerable slower)" >> >> However I am not sure how to change that parameter in ParaView >> >> Thanks >> SC >> _______________________________________________ >> Powered by www.kitware.com >> >> Visit other Kitware open-source projects at >> http://www.kitware.com/opensource/opensource.html >> >> Please keep messages on-topic and check the ParaView Wiki at: >> http://paraview.org/Wiki/ParaView >> >> Search the list archives at: http://markmail.org/search/?q=ParaView >> >> Follow this link to subscribe/unsubscribe: >> http://public.kitware.com/mailman/listinfo/paraview >> > > -- Stefano Capra Contacts: [email protected] +44 (0)7528622152
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