Overlapping volumes render incorrectly with branched path tracing #53854

New Issue

Stefan Werner · 2018-01-22T10:32:50+01:00

Stefan Werner commented

2018-01-22 10:32:50 +01:00

This bug is verified on macOS and Linux in commit c723e91ee1

Git bisect points to commit cd023b6cec as the one introducing this bug. Said commit was part of D2766.

This bug is verified on macOS and Linux in commit c723e91ee155612b68950ca2a44b49bdd3c72838 Git bisect points to commit cd023b6cecb7b8c74de1d16510ad09668b86001f as the one introducing this bug. Said commit was part of [D2766](https://archive.blender.org/developer/D2766). ![expected result.png](https://archive.blender.org/developer/F1935811/expected_result.png) ![actual result.png](https://archive.blender.org/developer/F1935813/actual_result.png) [overlapping_volumes.blend](https://archive.blender.org/developer/F1935791/overlapping_volumes.blend)

Stefan Werner commented

2018-01-22 10:32:50 +01:00

Added subscriber: @Stefan_Werner

Stefan Werner commented

2018-01-22 10:33:26 +01:00

No description provided.

Stefan Werner commented

2018-01-22 13:20:42 +01:00

It looks like this happens with plain transparency too - branched path tracing and plain path tracing give different results. See the attached scene.
overlapping_transparencies.blend

It looks like this happens with plain transparency too - branched path tracing and plain path tracing give different results. See the attached scene. [overlapping_transparencies.blend](https://archive.blender.org/developer/F1936858/overlapping_transparencies.blend)

blender-admin commented

2018-01-22 13:47:53 +01:00

This issue was referenced by blender/cycles@d5d609f292

This issue was referenced by blender/cycles@d5d609f292b0f3905d32070445292cfb72d56219

blender-admin commented

2018-01-22 13:47:53 +01:00

This issue was referenced by 8a2d09eb9f

This issue was referenced by 8a2d09eb9f5a5804ded16900523087a312ffa302

Brecht Van Lommel commented

2018-01-22 14:03:11 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2018-01-22 14:03:11 +01:00

cd023b6cec just changed the noise, the issue was in d750d18.

cd023b6cec just changed the noise, the issue was in d750d18.

Brecht Van Lommel commented

2018-01-22 14:03:24 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2018-01-22 14:03:24 +01:00

Stefan Werner commented

2018-01-22 14:49:03 +01:00

Thanks, that was quick.
You're right, D2766 only made the issue more visible - it was present in earlier revisions as well when the min transparency parameter was set low enough.

Thanks, that was quick. You're right, [D2766](https://archive.blender.org/developer/D2766) only made the issue more visible - it was present in earlier revisions as well when the min transparency parameter was set low enough.

blender-admin commented

2018-01-23 10:44:20 +01:00

This issue was referenced by blender/cycles@9302f496e2

This issue was referenced by blender/cycles@9302f496e23b9daeb5a0ff7c169a943324214ee6

blender-admin commented

2018-01-23 10:44:20 +01:00

This issue was referenced by 2838cf0dfe

This issue was referenced by 2838cf0dfe6c8b435cc54881bf548e2bbb0096ae

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Overlapping volumes render incorrectly with branched path tracing #53854