Maniphest T99257

Shadow Caustics not working on Blender 3.2.0
Closed, Archived
Actions

Assigned To
Alaska (Alaska)
Authored By
Lucas Oliveira (Starduck.3D)
Jun 29 2022, 6:17 AM
Tags
  • BF Blender
Subscribers
Alaska (Alaska)
Chad Pogchamp (LordOpof)
Lucas Oliveira (Starduck.3D)
Pratik Borhade (PratikPB2123)

Description

System Information
Operating system: Windows 11
Graphics card: RTX 3060ti / Ryzen 5600G / 16Gb Ram

Blender Version
Broken: 3.2.0
Worked: None Yet

Shadow Caustics are not Working

By Enabling in the startup default spotlight "Shadow Caustics", setting the Renderer to Cycles, setting "Cast Shadow Caustics" in the "Object Properties" panel of the Mesh with the "Glass BSDF" shader and setting "Receive Shadow Caustics" in the "Object Properties" panel for the Mesh with a simple non transparent nor Refractive material. The shadow just becomes a solid dark like the object was opaque and solid.

Related Objects

Event Timeline

Lucas Oliveira (Starduck.3D) created this task.Jun 29 2022, 6:17 AM
Pratik Borhade (PratikPB2123) changed the task status from Needs Triage to Needs Information from User.Jun 29 2022, 7:07 AM
Pratik Borhade (PratikPB2123) added a subscriber: Pratik Borhade (PratikPB2123).

Thanks for the report
Did you enable Shadow caustics from Object data properties panel of light?

Alaska (Alaska) added a subscriber: Alaska (Alaska).Jun 29 2022, 8:51 AM

Providing a .blend file with the issue would be useful.

My guess for why it isn't working is that the object with Cast Shadow Caustics option enabled needs to be set to Shade smooth. If it is Shade Flat (the default for objects) then it will not cast caustics.

Chad Pogchamp (LordOpof) added a subscriber: Chad Pogchamp (LordOpof).Jun 29 2022, 9:29 PM

in the light settings of your light you should check if you have shadow caustics enabled there

Lucas Oliveira (Starduck.3D) added a comment.Jun 30 2022, 3:57 PM

@Pratik Borhade (PratikPB2123) Thank you for your response. Everything was set correctly but I mostly tested on Shade Flat objects.

Thank you @Alaska (Alaska) for nailing the problem. I was sure I tested once on a Shade Smooth UV Sphere, but I guess not since when I tried again on a Shade Smooth one, it worked just fine!

Thank you @Chad Pogchamp (LordOpof) for your suggestion, but everything regarding the settings were covered. Aparently the problem was the need for the Casting object to be smooth.

Alaska (Alaska) closed this task as Resolved.Jul 1 2022, 2:20 AM
Alaska (Alaska) claimed this task.

Marking as resolved.

Hans Goudey (HooglyBoogly) changed the task status from Resolved to Archived.Jul 1 2022, 2:34 AM
55 (404) mentioned this in T101446: Shadow Caustics not working on Blender 3.2.2.Sep 29 2022, 3:19 AM