SLIVR volume rendering wrong image with Lighting option turned on

visit-dav / visit

VisIt - Visualization and Data Analysis for Mesh-based Scientific Data

https://visit.llnl.gov

BSD 3-Clause "New" or "Revised" License

437 stars 116 forks source link

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