Normal map node doesn't works with curve objects (or any object without UVs) in EEVEE #63424

New Issue

Michael Soluyanov · 2019-04-09T16:27:09+02:00

Michael Soluyanov commented

2019-04-09 16:27:09 +02:00

System Information
Operating system: Linux-4.15.0-46-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.116

Blender Version
Broken: version: 2.80 (sub 54), branch: blender2.7, commit date: 2019-04-07 15:02, hash: 75f551faca
Worked: cycles

Short description of error
Normal map node doesn't works with curve objects (or any object without UVs) in EEVEE

Exact steps for others to reproduce the error
Open file, open lookdev (or rendered, but add some HDRI to clear view effects)

normal map test 3.blend

You will see something like this. Left object is curve, right - default mesh cube:

Normal map affects on cube, but not on curve object. Normal map also plugged into color, to preview, that texture coordinate works well.

**System Information** Operating system: Linux-4.15.0-46-generic-x86_64-with-debian-buster-sid 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.116 **Blender Version** Broken: version: 2.80 (sub 54), branch: blender2.7, commit date: 2019-04-07 15:02, hash: `75f551faca` Worked: cycles **Short description of error** Normal map node doesn't works with curve objects (or any object without UVs) in EEVEE **Exact steps for others to reproduce the error** Open file, open lookdev (or rendered, but add some HDRI to clear view effects) [normal map test 3.blend](https://archive.blender.org/developer/F6922508/normal_map_test_3.blend) You will see something like this. Left object is curve, right - default mesh cube: ![Снимок экрана от 2019-04-09 17-20-29.png](https://archive.blender.org/developer/F6922509/Снимок_экрана_от_2019-04-09_17-20-29.png) Normal map affects on cube, but not on curve object. Normal map also plugged into color, to preview, that texture coordinate works well.

Michael Soluyanov commented

2019-04-09 16:27:09 +02:00

Added subscriber: @crantisz

Sebastian Parborg commented

2019-04-09 21:02:25 +02:00

Added subscriber: @ZedDB

Clément Foucault was assigned by Sebastian Parborg

2019-04-09 21:02:25 +02:00

Sebastian Parborg commented

2019-04-09 21:02:25 +02:00

I'm getting a lot of depsgraph asserts when going into the material tab. (But I'm unsure if they are related or not)

BLI_assert failed: /home/zed/prog/blender/source/blender/depsgraph/intern/depsgraph.cc:124, add_id_node(), at '(id->tag & LIB_TAG_COPIED_ON_WRITE) == 0'

The issue here is not with curve objects, you can convert the curve object to mesh and the issue is still present.
The cause seem to be the normal map node as you pointed out. If i just connect the normal map texture to the normal input on the shader, I get modified normals.

But if I pass it through the normal map node, this doesn't happen.

I'm getting a lot of depsgraph asserts when going into the material tab. (But I'm unsure if they are related or not) ``` BLI_assert failed: /home/zed/prog/blender/source/blender/depsgraph/intern/depsgraph.cc:124, add_id_node(), at '(id->tag & LIB_TAG_COPIED_ON_WRITE) == 0' ``` The issue here is not with curve objects, you can convert the curve object to mesh and the issue is still present. The cause seem to be the normal map node as you pointed out. If i just connect the normal map texture to the normal input on the shader, I get modified normals. But if I pass it through the normal map node, this doesn't happen.

Michael Soluyanov commented

2019-04-09 21:11:10 +02:00

In #63424#657577, @ZedDB wrote:
The issue here is not with curve objects, you can convert the curve object to mesh and the issue is still present.

Yes, and only adding empty UV map solves the problem. So it's looks like Normal map node doesn't work without UV-map...

> In #63424#657577, @ZedDB wrote: > The issue here is not with curve objects, you can convert the curve object to mesh and the issue is still present. Yes, and only adding empty UV map solves the problem. So it's looks like Normal map node doesn't work without UV-map...

Michael Soluyanov changed title from ~~Normal map node doesn't works with curve objects in EEVEE~~ to Normal map node doesn't works with curve objects (or any object without UVs) in EEVEE

2019-04-09 21:13:06 +02:00

Philip Holzmann commented

2019-06-10 13:24:58 +02:00

Added subscriber: @Foaly

Philip Holzmann commented

2019-06-10 13:24:58 +02:00

Just a little note:
The problem here seems to be that curves don't have tangents. You can check this via the tangent node set to UV Map mode.
However, when curves are evaluated as a mesh, they get tangents (e. g. by adding a modifier).

So a possible workaround to get tangents for now is to just add a modifier that does nothing.

Just a little note: The problem here seems to be that curves don't have tangents. You can check this via the tangent node set to UV Map mode. However, when curves are evaluated as a mesh, they get tangents (e. g. by adding a modifier). So a possible workaround to get tangents for now is to just add a modifier that does nothing.

Mike Futcher commented

2019-09-13 13:32:23 +02:00

Added subscriber: @MikeFutcher

Mike Futcher commented

2019-09-13 13:32:23 +02:00

"So a possible workaround to get tangents for now is to just add a modifier that does nothing."

Sounds like a good solution - except I can't get this to work either. Do you have a mod that works with this?

"So a possible workaround to get tangents for now is to just add a modifier that does nothing." Sounds like a good solution - except I can't get this to work either. Do you have a mod that works with this?

Philip Holzmann commented

2019-09-17 16:00:22 +02:00

@MikeFutcher I think I used an Array Modifer with count set to 1.

Clément Foucault was unassigned by Dalai Felinto

2019-12-23 16:34:40 +01:00

Dalai Felinto commented

2019-12-23 16:34:40 +01:00

Added subscriber: @fclem

Clément Foucault self-assigned this 2020-01-29 21:49:27 +01:00

Richard Antalik commented

2020-01-30 00:43:06 +01:00

Added subscriber: @iss