visit-dav / visit

VisIt - Visualization and Data Analysis for Mesh-based Scientific Data
https://visit.llnl.gov
BSD 3-Clause "New" or "Revised" License
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SLIVR volume rendering wrong image with Lighting option turned on #3290

Open biagas opened 5 years ago

biagas commented 5 years ago

Open rect3d.silo Create a volume plot of u change Render Method to 'Ray casting: SLIVR' Click Apply. Draw.

You will see image that looks stairstepped. vol_slivr_rect3d_u

Now turn off the Lighting option. You'll see a better image. vol_slivr_rect3d_u_no_lighting

Might be an off-by-one or other indexing issue.

I duplicated on Linux and Windows.

I duplicated in 2.13.3 as well as trunk.

biagas commented 5 years ago

We should probably add tests that utilize RayCastingSLIVR