bump node doesn't work with SSS shader #47681

New Issue

Bubble Bobble · 2016-03-04T02:39:18+01:00

Bubble Bobble commented

2016-03-04 02:39:18 +01:00

System Information
Windows 7, nvidia Quadrio 1000m

Blender Version
Broken: (example: 2.69.7 4b206af, see splash screen)
Worked: 2.76 at least, possibly previous daily builds before 2.77 RC1

Short description of error
SSS shader is not affected by bump node

Exact steps for others to reproduce the error
make an object with an SSS shader, put some kind of bump node into it

attached blend showing problem: bump SSS.blend

Also to mention, I went into this wanting to replicate a problem I saw with SSS reflecting black spots into glossy shaders, that's why there is a glossy plane below the SSS sphere. I think that problem may still be there also but in attempting to make a test file to show the issue, I noticed that SSS bump is not working. The other issue that I noticed before RC1 was that SSS objects with normal displacement reflect black spots into glossy shaders.

**System Information** Windows 7, nvidia Quadrio 1000m **Blender Version** Broken: (example: 2.69.7 4b206af, see splash screen) Worked: 2.76 at least, possibly previous daily builds before 2.77 RC1 **Short description of error** SSS shader is not affected by bump node **Exact steps for others to reproduce the error** make an object with an SSS shader, put some kind of bump node into it attached blend showing problem: [bump SSS.blend](https://archive.blender.org/developer/F287032/bump_SSS.blend) Also to mention, I went into this wanting to replicate a problem I saw with SSS reflecting black spots into glossy shaders, that's why there is a glossy plane below the SSS sphere. I think that problem may still be there also but in attempting to make a test file to show the issue, I noticed that SSS bump is not working. The other issue that I noticed before RC1 was that SSS objects with normal displacement reflect black spots into glossy shaders.

Bubble Bobble commented

2016-03-04 02:39:18 +01:00

Changed status to: 'Open'

Bubble Bobble commented

2016-03-04 02:39:18 +01:00

Added subscriber: @JimCantley

Bubble Bobble commented

2016-03-04 02:41:00 +01:00

Sorry guys, I can't seem to edit my post. The version this happens on is 2.77 RC b594b25 branch: HEAD. If anyone can edit my post, feel free. Many thanks in advance for the hard work.

"You do not have permission to edit this object.
Users with the "Can Edit" capability:

Members of the project "Moderators" can take this action.
The owner of a task can always view and edit it."

Can I have permission to edit my own posts? I've wanted to go back to clarify before but am never able.

Sorry guys, I can't seem to edit my post. The version this happens on is 2.77 RC b594b25 branch: HEAD. If anyone can edit my post, feel free. Many thanks in advance for the hard work. "You do not have permission to edit this object. Users with the "Can Edit" capability: Members of the project "Moderators" can take this action. The owner of a task can always view and edit it." Can I have permission to edit my own posts? I've wanted to go back to clarify before but am never able.

Sergey Sharybin commented

2016-03-04 08:49:33 +01:00

Added subscriber: @Sergey

Sergey Sharybin self-assigned this 2016-03-04 08:49:33 +01:00

Sergey Sharybin commented

2016-03-04 08:49:33 +01:00

This is more like a SVM vs. OSL shading difference. I don't see regression in behavior, but i do see following issues:

OSL does not support bump mapping
Both SVM and OSL have fireflies

Those issues i'm looking into now.

As for permission to edit reports (it's not a forum, we don't have posts ;) it's a bit tricky to grant you ability to edit only own tasks, but it's on a TODO. You can search for a corresponding task here.

This is more like a SVM vs. OSL shading difference. I don't see regression in behavior, but i do see following issues: - OSL does not support bump mapping - Both SVM and OSL have fireflies Those issues i'm looking into now. As for permission to edit reports (it's not a forum, we don't have posts ;) it's a bit tricky to grant you ability to edit only own tasks, but it's on a TODO. You can search for a corresponding task here.

Sergey Sharybin commented

2016-03-04 14:27:27 +01:00

Fireflies are caused by changed default for the light -- it is now uses MIS by default. In order to have same behavior as in 2.76 you can simply disable MIS for now. Surely those fireflies are to be investigated still. It's not a regression tho, so not a stopper for RC2.

Bubble Bobble commented

2016-03-04 18:11:37 +01:00

Sergey, thank you very much! I don't use OSL for all projects but sometimes it is helpful. I have it turned on in my default blend file.

Turning it off fixes things up. I didn't think it would work like that, I thought it was more of an addition rather than an overall change. Surely this is some kind of problem though, no? For people that want to use OSL and bump on SSS that is a bit of a dilemma.

Either way, I appreciate the response and help to fix things, thank you!

Sergey, thank you very much! I don't use OSL for all projects but sometimes it is helpful. I have it turned on in my default blend file. Turning it off fixes things up. I didn't think it would work like that, I thought it was more of an addition rather than an overall change. Surely this is some kind of problem though, no? For people that want to use OSL and bump on SSS that is a bit of a dilemma. Either way, I appreciate the response and help to fix things, thank you!

Brecht Van Lommel commented

2016-03-06 07:22:28 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2016-03-06 07:22:28 +01:00

The fireflies when enabling MIS are from caustics, sharp highlights in the glossy floor visible through diffuse reflections. The solution there is to disable caustics or use filter glossy, that's not a bug.

blender-admin commented

2016-03-07 11:32:46 +01:00

This issue was referenced by 5adfdd965a

This issue was referenced by 5adfdd965a3a9e7f52fa282a892a123f8ed66c5a

Sergey Sharybin commented

2016-03-07 11:33:26 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2016-03-07 11:33:26 +01:00

blender-admin commented

2016-03-29 10:06:12 +02:00

This issue was referenced by blender/cycles@8c49cd604b

This issue was referenced by blender/cycles@8c49cd604be706e8835b91c3171384064e5cce6d

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bump node doesn't work with SSS shader #47681