Shadow Caustics not working on Blender 3.2.0 #99257

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opened 8 months ago by Starduck.3D · 12 comments

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.

**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.
Poster

Added subscriber: @Starduck.3D

Added subscriber: @Starduck.3D
Collaborator

Added subscriber: @PratikPB2123

Added subscriber: @PratikPB2123
Collaborator

Changed status from 'Needs Triage' to: 'Needs User Info'

Changed status from 'Needs Triage' to: 'Needs User Info'
Collaborator

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

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

Added subscriber: @Alaska

Added subscriber: @Alaska

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.

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.

Added subscriber: @LordOpof

Added subscriber: @LordOpof

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

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

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

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

@PratikPB2123 Thank you for your response. Everything was set correctly but I mostly tested on Shade Flat objects. Thank you @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 @LordOpof for your suggestion, but everything regarding the settings were covered. Aparently the problem was the need for the Casting object to be smooth.

Changed status from 'Needs User Info' to: 'Resolved'

Changed status from 'Needs User Info' to: 'Resolved'
Alaska closed this issue 7 months ago
Alaska self-assigned this 7 months ago

Marking as resolved.

Marking as resolved.
Collaborator

Changed status from 'Resolved' to: 'Archived'

Changed status from 'Resolved' to: 'Archived'
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Reference: blender/blender#99257
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