Specular Lighting Produce Flat Shade Light #95540

New Issue

Abdulla Al Saif · 2022-02-05T22:34:56+01:00

Abdulla Al Saif commented

2022-02-05 22:34:56 +01:00

System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: AMD Radeon R7 M440 ATI Technologies Inc. 4.5.14831 Core Profile Context 21.5.2 27.20.21003.8013

Blender Version
Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash: dc2d180181
Worked: 2.92

Short description of error
I was trying to follow a Toon Shader Tutorial from Lightning Boy Studio when I notice the weird behavior of the shader after changing the offset x and offset z values I tried to investigate when this problem started and it seems to be started after version 2.92.0 that means from 2.93.0 this weird behavior started showing up

Exact steps for others to reproduce the error
to produce this bug you will have to be in the rendered view or material preview

change the value of the x offset and z offset

this is the expected results from checking it on 2.93.0+ including the 3.0.1 and the newest alpha version of 3.2.0-alpha

From version 2.92.0 to 2.8 this is the behavior you get from the shader

Bug.blend

Thanks!

**System Information** Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: AMD Radeon R7 M440 ATI Technologies Inc. 4.5.14831 Core Profile Context 21.5.2 27.20.21003.8013 **Blender Version** Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash: `dc2d180181` Worked: 2.92 **Short description of error** I was trying to follow a Toon Shader Tutorial from Lightning Boy Studio when I notice the weird behavior of the shader after changing the offset x and offset z values I tried to investigate when this problem started and it seems to be started after version 2.92.0 that means from 2.93.0 this weird behavior started showing up **Exact steps for others to reproduce the error** to produce this bug you will have to be in the rendered view or material preview ![2022_02_05_23_54_49_Bug.png](https://archive.blender.org/developer/F12849135/2022_02_05_23_54_49_Bug.png) change the value of the x offset and z offset ![2022_02_05_23_38_46_Bug.png](https://archive.blender.org/developer/F12849107/2022_02_05_23_38_46_Bug.png) this is the expected results from checking it on 2.93.0+ including the 3.0.1 and the newest alpha version of 3.2.0-alpha ![2022_02_05_15_07_02_Bug.png](https://archive.blender.org/developer/F12849070/2022_02_05_15_07_02_Bug.png) ![2022_02_05_15_41_53_Bug.png](https://archive.blender.org/developer/F12849071/2022_02_05_15_41_53_Bug.png) From version 2.92.0 to 2.8 this is the behavior you get from the shader ![2022_02_05_23_33_43_Bug.png](https://archive.blender.org/developer/F12849095/2022_02_05_23_33_43_Bug.png) [Bug.blend](https://archive.blender.org/developer/F12849075/Bug.blend) Thanks!

Abdulla Al Saif commented

2022-02-05 22:34:56 +01:00

Added subscriber: @Abdulla563

Omar Emara commented

2022-02-07 12:28:56 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Omar Emara commented

2022-02-07 12:34:40 +01:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-02-07 12:34:40 +01:00

Thanks for the report, I can replicate that. Can you try simplify the file as much as possible? Try to remove all nodes and materials that are not relevant to the bug.

Abdulla Al Saif commented

2022-02-07 13:02:35 +01:00

ok here is most simplified version of the file that I can possibly do anymore than that the specular wouldn't work because it requires the Geometry, Combine XYZand a Specular BSDF for it to be produced.

you only need to change the value of the x, y and z to see the result now.

Bug.blend

Thanks for the reply.

![image.png](https://archive.blender.org/developer/F12852365/image.png) ok here is most simplified version of the file that I can possibly do anymore than that the specular wouldn't work because it requires the **Geometry**, **Combine XYZ**and a **Specular BSDF** for it to be produced. you only need to change the value of the x, y and z to see the result now. [Bug.blend](https://archive.blender.org/developer/F12852371/Bug.blend) Thanks for the reply.

Philipp Oeser commented

2022-04-28 10:59:58 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-04-28 10:59:58 +02:00

This is a duplicate of #88368 (Regression: broken normal shading, sharp edges appear on smooth surfaces.), will merge reports

Philipp Oeser commented

2022-04-28 11:00:10 +02:00

Closed as duplicate of #88368

Philipp Oeser closed this issue

2022-04-28 11:00:10 +02:00

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Specular Lighting Produce Flat Shade Light #95540