Cycles Terminator Effect #61745

New Issue

Michael Klein · 2019-02-20T13:14:47+01:00

Michael Klein commented

2019-02-20 13:14:47 +01:00

System Information
Operating system: Win 10 latest
Graphics card: GTX 1060

Blender Version
Broken: 2.80 in general
Worked: seems to be a general issue

Short description of error
Shading of meshes will get "flat shaded shadow borders". This effect is called "Terminator Effect".

Exact steps for others to reproduce the error
Just setup a scene with a standard sphere. Smooth it and use a lighting with harder shadows.

This is the effect with HDRI lighting:

This is the effect with an Area Light:

Scaling the Area Light from 1m to 0,3m:

**System Information** Operating system: Win 10 latest Graphics card: GTX 1060 **Blender Version** Broken: 2.80 in general Worked: seems to be a general issue **Short description of error** Shading of meshes will get "flat shaded shadow borders". This effect is called "Terminator Effect". **Exact steps for others to reproduce the error** Just setup a scene with a standard sphere. Smooth it and use a lighting with harder shadows. This is the effect with HDRI lighting: ![190220_Blender280_Cycles_Terminator_Effect.png](https://archive.blender.org/developer/F6670191/190220_Blender280_Cycles_Terminator_Effect.png) This is the effect with an Area Light: ![190220_Blender280_Cycles_Terminator_Effect_Area_Light.png](https://archive.blender.org/developer/F6670258/190220_Blender280_Cycles_Terminator_Effect_Area_Light.png) Scaling the Area Light from 1m to 0,3m: ![190220_Blender280_Cycles_Terminator_Effect_Area_Light_Small.png](https://archive.blender.org/developer/F6670278/190220_Blender280_Cycles_Terminator_Effect_Area_Light_Small.png)

Michael Klein commented

2019-02-20 13:14:47 +01:00

Added subscriber: @Renderbicks

Brecht Van Lommel commented

2019-02-20 13:27:37 +01:00

Closed as duplicate of #37814

Brecht Van Lommel closed this issue

2019-02-20 13:27:37 +01:00

Michael Klein commented

2019-02-20 13:28:05 +01:00

Changed status from 'Duplicate' to: 'Open'

Michael Klein reopened this issue

2019-02-20 13:28:05 +01:00

Brecht Van Lommel commented

2019-02-20 13:28:56 +01:00

Closed as duplicate of #37814

Brecht Van Lommel closed this issue

2019-02-20 13:28:56 +01:00

Christoph Werner commented

2019-09-09 08:53:11 +02:00

Added subscribers: @brecht, @ChristophWerner

Christoph Werner commented

2019-09-09 08:53:11 +02:00

@brecht This issue still exists in version 2.81 Alpha.

(version: 2.81 (sub 8), branch: master, commit date: 2019-09-08 21:40, hash: f3a4f12ac0, type: Release
build date: 08/09/2019, 16:01)

Or is it my mistake and I've forgot so set something?
See my simple attached example.

system-info.txt

terminator_effect_cycles01.blend

@brecht This issue still exists in version 2.81 Alpha. (version: 2.81 (sub 8), branch: master, commit date: 2019-09-08 21:40, hash: f3a4f12ac090, type: Release build date: 08/09/2019, 16:01) Or is it my mistake and I've forgot so set something? See my simple attached example. [system-info.txt](https://archive.blender.org/developer/F7726435/system-info.txt) ![terminator_effect_cycles01.jpg](https://archive.blender.org/developer/F7726436/terminator_effect_cycles01.jpg) [terminator_effect_cycles01.blend](https://archive.blender.org/developer/F7726438/terminator_effect_cycles01.blend)

Brecht Van Lommel commented

2019-09-09 09:09:00 +02:00

It's not solved, this report was closed as a duplicate:

This is the known "Terminator issue" in Cycles (also some other engines have trouble here).

It's a known issue and will probably be improved one day, but not considered a bug at the moment. In the meantime, the only way to avoid this, is to use high-res geometry.

It's not solved, this report was closed as a duplicate: > This is the known "Terminator issue" in Cycles (also some other engines have trouble here). > > It's a known issue and will probably be improved one day, but not considered a bug at the moment. In the meantime, the only way to avoid this, is to use high-res geometry.

Christoph Werner commented

2019-09-09 09:41:42 +02:00

In #61745#771758, @brecht wrote:
It's not solved, this report was closed as a duplicate:

This is the known "Terminator issue" in Cycles (also some other engines have trouble here).

It's a known issue and will probably be improved one day, but not considered a bug at the moment. In the meantime, the only way to avoid this, is to use high-res geometry.

OK. Thank you, Brecht. I hope this issue will be fixed soon.

> In #61745#771758, @brecht wrote: > It's not solved, this report was closed as a duplicate: > >> This is the known "Terminator issue" in Cycles (also some other engines have trouble here). >> >> It's a known issue and will probably be improved one day, but not considered a bug at the moment. In the meantime, the only way to avoid this, is to use high-res geometry. OK. Thank you, Brecht. I hope this issue will be fixed soon.

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

Cycles Terminator Effect #61745