[vtkusers] Incorrect rendering of polygonal data intermixed with volumes with depth peeling.

[gohlinchia]

Hi,

Has anyone encountered the problem of incorrect rendering of completely
transparent polygonal surface meshes intermixed with ray cast volumes, when
depth peeling is activated? The final rendered scene shows an outline of the
polygonal meshes even though they are supposedly totally transparent
(opacity value of 0.0). This happens when depth peeling for volumes is
activated. Please take a look at the following attached images:

<http://vtk.1045678.n5.nabble.com/file/t342340/Polygonal_mesh_and_volume_with_depth_peeling_%28correct%29.png> 

<http://vtk.1045678.n5.nabble.com/file/t342340/Transparent_polygonal_mesh_and_volume_with_depth_peeling_%28wrong%29.png> 

<http://vtk.1045678.n5.nabble.com/file/t342340/Transparent_polygonal_mesh_and_volume_without_depth_peeling_%28correct%29.png> 

We are using the OpenGL2 backend in VTK 8.1.0.

Thanks.



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Chris
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