SSS issues - part two #46908

New Issue

Mohammad Eideh · 2015-12-01T21:06:03+01:00

Mohammad Eideh commented

2015-12-01 21:06:03 +01:00

System Information
Win 7 64bit - Nvidia GTX 780 Ti

Blender Version
Broken: 2.76.2 520feda
Worked: 2.76b official

So I did some further testing with the latest build to check the latest SSS changes. Here are some more issues I've found:

SSS Reflections on other objects are black.
Render times seem to be slightly slower. This looks to be related to the world Multiple Importance Sampling setting. Disable it and times are on par with the latest build, even slightly faster. Buy hey, seeing the memory savings (~1GB VRAM in one scene), I'm not complaining. :)
Viewport rendering: A single SSS object seem fine but when adding multiple ones they will look weird in the preview render.

Screenies to display the reflections issue, render times and viewport problem.

2.76b official render:

2.76.2 520feda render...notice the reflections on Torus:

2.76b official viewport:

2.76.2 520feda viewport:

Exact steps for others to reproduce the error
sss_suzanne.blend
Points described above should be sufficient.

**System Information** Win 7 64bit - Nvidia GTX 780 Ti **Blender Version** Broken: 2.76.2 520feda Worked: 2.76b official So I did some further testing with the latest build to check the latest SSS changes. Here are some more issues I've found: - SSS Reflections on other objects are black. - Render times seem to be slightly slower. This looks to be related to the world Multiple Importance Sampling setting. Disable it and times are on par with the latest build, even slightly faster. Buy hey, seeing the memory savings (~1GB VRAM in one scene), I'm not complaining. :) - Viewport rendering: A single SSS object seem fine but when adding multiple ones they will look weird in the preview render. Screenies to display the reflections issue, render times and viewport problem. 2.76b official render: ![official_render.jpg](https://archive.blender.org/developer/F261837/official_render.jpg) 2.76.2 520feda render...notice the reflections on Torus: ![exp_render.jpg](https://archive.blender.org/developer/F261839/exp_render.jpg) 2.76b official viewport: ![official_viewport.jpg](https://archive.blender.org/developer/F261842/official_viewport.jpg) 2.76.2 520feda viewport: ![exp_viewport.jpg](https://archive.blender.org/developer/F261844/exp_viewport.jpg) **Exact steps for others to reproduce the error** [sss_suzanne.blend](https://archive.blender.org/developer/F261847/sss_suzanne.blend) Points described above should be sufficient.

Mohammad Eideh commented

2015-12-01 21:06:03 +01:00

Changed status to: 'Open'

Mohammad Eideh commented

2015-12-01 21:06:03 +01:00

Added subscriber: @quacker

Sergey Sharybin self-assigned this 2015-12-01 22:10:51 +01:00

Sergey Sharybin commented

2015-12-01 23:17:09 +01:00

Fixed the issue which happens in the viewport. Was a mistake in the cases when BVH has object instances. Could have happen in final render as well.

Still working on the reflections issue.

Fixed the issue which happens in the viewport. Was a mistake in the cases when BVH has object instances. Could have happen in final render as well. Still working on the reflections issue.

Sergey Sharybin commented

2015-12-02 12:01:05 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2015-12-02 12:01:05 +01:00

Sergey Sharybin commented

2015-12-02 12:01:05 +01:00

Commited remaining fixes at d0a9ec5. Think now this report is fully handled.

So thanks for the report, closing it as resolved now!

Commited remaining fixes at d0a9ec5. Think now this report is fully handled. So thanks for the report, closing it as resolved now!

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SSS issues - part two #46908