Eevee: Using 16-bit TIF images for normal maps create strange shading #60583

New Issue

Andrew Price · 2019-01-17T01:40:25+01:00

Andrew Price commented

2019-01-17 01:40:25 +01:00

System Information
Operating system: Windows 10
Graphics card: GTX 1080ti

Blender Version
Broken: Blender2.8, 2019-01-14)
Worked: Blender 2.79

Short description of error
TIF files creates strange normal bumps

Exact steps for others to reproduce the error

Create a plane and set material as a Principled Shader
Use a TIF image as the normal map. The shading looks strange:
Swap it with a JPG normal map and it looks fine

The same TIF file works correctly in Cycles, so I think it's isolated to Eevee.
8-bit TIFs work fine, just 16-bits are the problem. But since 16-bit TIFs are the industry standard for avoiding stepping in normal maps, this is fairly important.

Example blend: tif_normal_bug_packed.blend

**System Information** Operating system: Windows 10 Graphics card: GTX 1080ti **Blender Version** Broken: Blender2.8, 2019-01-14) Worked: Blender 2.79 **Short description of error** TIF files creates strange normal bumps **Exact steps for others to reproduce the error** 1. Create a plane and set material as a Principled Shader 2. Use a TIF image as the normal map. The shading looks strange: ![blender_2019-01-17_10-29-55.png](https://archive.blender.org/developer/F6311104/blender_2019-01-17_10-29-55.png) 3. Swap it with a JPG normal map and it looks fine ![blender_2019-01-17_10-30-04.jpg](https://archive.blender.org/developer/F6311113/blender_2019-01-17_10-30-04.jpg) The same TIF file works correctly in Cycles, so I think it's isolated to Eevee. 8-bit TIFs work fine, just 16-bits are the problem. But since 16-bit TIFs are the industry standard for avoiding stepping in normal maps, this is fairly important. Example blend: [tif_normal_bug_packed.blend](https://archive.blender.org/developer/F6311100/tif_normal_bug_packed.blend)

Andrew Price commented

2019-01-17 01:40:25 +01:00

Added subscriber: @AndrewPrice

Andrew Price changed title from ~~Using 16-bit TIF images for normal maps, create strange shading in Eevee~~ to Using 16-bit TIF images for normal maps create strange shading in Eevee

2019-01-17 01:40:42 +01:00

Andrew Price changed title from ~~Using 16-bit TIF images for normal maps create strange shading in Eevee~~ to Eevee: Using 16-bit TIF images for normal maps create strange shading

2019-01-17 01:41:04 +01:00

Vladimir commented

2019-01-17 08:51:28 +01:00

Added subscriber: @VladimirKunyansky

Vladimir commented

2019-01-17 08:51:28 +01:00

I confirm this for *.png normal maps. When using export from substance designer (with alpha channel).
Solution to the problem for me - using Color (instead of Non-Color Data) in image texture node, or sometimes - in properties (N-panel) of image texture node change Color Space from sRGB to Non-Color.

I confirm this for **.png* normal maps. When using export from substance designer (with alpha channel). Solution to the problem for me - using **Color** (instead of **Non-Color Data**) in image texture node, or sometimes - in properties (N-panel) of image texture node change Color Space from **sRGB** to **Non-Color**. ![normal_bug.jpg](https://archive.blender.org/developer/F6314691/normal_bug.jpg)

Anton commented

2019-01-17 11:01:26 +01:00

Added subscriber: @FayScrin

Anton commented

2019-01-17 11:01:26 +01:00

Have you tried to convert from srgb to linear? I had problems with a 16-bit normal texture, helped me transfer to a linear space instead of srgb

Jacques Lucke commented

2019-01-17 11:47:39 +01:00

Added subscriber: @fclem

Vladimir commented

2019-01-17 16:41:43 +01:00

Working solution for *.blend file in description : in properties (N-panel) of image texture node change Color Space from sRGB to Non-Color:

Working solution for *.blend file in description : in properties (N-panel) of *image texture node* change Color Space from sRGB to Non-Color: ![normal_bug_2.jpg](https://archive.blender.org/developer/F6318583/normal_bug_2.jpg)

Brecht Van Lommel commented

2019-01-17 17:19:14 +01:00

Closed as duplicate of #58621

Brecht Van Lommel closed this issue

2019-01-17 17:19:14 +01:00

Andrew Price commented

2019-01-18 01:11:43 +01:00

Ah I didn't even know that option was there!

It's confusing to have a Color/Non-Color option on the node itself, but then a second hidden option in the properties also that needs to be set to Non-Color. I'm not sure what setting the first one to Non-Color actually did, if it was the latter that actually doesset it to Non-Color.

But I'll remember it for next time. Thanks

Ah I didn't even know that option was there! It's confusing to have a Color/Non-Color option on the node itself, but then a second hidden option in the properties also that needs to be set to Non-Color. I'm not sure what setting the first one to Non-Color actually did, if it was the latter that actually *does*set it to Non-Color. But I'll remember it for next time. Thanks

Kirill Volynkin commented

2019-01-22 20:08:01 +01:00

Added subscriber: @Kirill-Volynkin

Kirill Volynkin commented

2019-01-22 20:08:01 +01:00

This comment was removed by @Kirill-Volynkin

*This comment was removed by @Kirill-Volynkin*

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

Eevee: Using 16-bit TIF images for normal maps create strange shading #60583