Bump Node not generating normals of textures using Geometry Position #70405

New Issue

Joseph Masaki · 2019-10-01T00:08:27+02:00

Joseph Masaki commented

2019-10-01 00:08:27 +02:00

System Information
Operating system: Ubuntu 18.04.3 LTS (Bionic Beaver)
Graphics card: NVIDIA Corporation GP107M [GeForce GTX 1050 Mobile] (rev a1)

Blender Version
Broken: blender-2.81-ed779333bb82 to current
Worked: blender 2.80 release version

Short description of error
When using the "Position" output from the "Geometry" node for textures the "Bump" node does not output a normal map based on the bump map.
This "Position" output also doesn't work with the "Displacement" node.

Exact steps for others to reproduce the error

Select cube.
go to the "Shader Editor".
delete "Principled BSDF" node.
Add a "Geometry" node.
Add a "Noise Texture"
Connect the "Position" output of the "Geometry" node into the "Vector" input of the "Noise Texture" node
Add a "Bump" node.
Connect the "Fac" output of the "Noise Texture" node into the "Height" input of the "Bump" Node.

Connect the "Normal" output of the "Bump" node into the "Surface" input of the "Material Output" Node.

Edit: You can switch out the Bump node for a "Displacement" node and there will be no bumps displacement texture.

**System Information** Operating system: Ubuntu 18.04.3 LTS (Bionic Beaver) Graphics card: NVIDIA Corporation GP107M [GeForce GTX 1050 Mobile] (rev a1) **Blender Version** Broken: blender-2.81-ed779333bb82 to current Worked: blender 2.80 release version **Short description of error** When using the "Position" output from the "Geometry" node for textures the "Bump" node does not output a normal map based on the bump map. This "Position" output also doesn't work with the "Displacement" node. **Exact steps for others to reproduce the error** - Select cube. - go to the "Shader Editor". - delete "Principled BSDF" node. - Add a "Geometry" node. - Add a "Noise Texture" - Connect the "Position" output of the "Geometry" node into the "Vector" input of the "Noise Texture" node - Add a "Bump" node. - Connect the "Fac" output of the "Noise Texture" node into the "Height" input of the "Bump" Node. # Connect the "Normal" output of the "Bump" node into the "Surface" input of the "Material Output" Node. Edit: You can switch out the Bump node for a "Displacement" node and there will be no bumps displacement texture.

blender-admin commented

2019-10-01 00:08:27 +02:00

#69337 was marked as duplicate of this issue

blender-admin commented

2019-10-01 00:08:27 +02:00

#70304 was marked as duplicate of this issue

Joseph Masaki commented

2019-10-01 00:08:28 +02:00

Added subscriber: @JosephMasaki

Philipp Oeser commented

2019-10-01 11:16:32 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-10-01 11:16:32 +02:00

Can confirm, checking...

Philipp Oeser self-assigned this 2019-10-01 12:22:53 +02:00

Philipp Oeser commented

2019-10-01 12:22:53 +02:00

Caused by ffd5e1e6ac.
Marking this as High since it is a regression.
Will claim for now since I think I am close to a fix [it wasnt doing node_shader_gpu_bump_tex_coord in node_shader_gpu_geometry (as it was in node_shader_gpu_tex_coord), but still need to check the node->branch_tag]

Caused by ffd5e1e6acd2. Marking this as High since it is a regression. Will claim for now since I think I am close to a fix [it wasnt doing `node_shader_gpu_bump_tex_coord` in `node_shader_gpu_geometry` (as it was in `node_shader_gpu_tex_coord`), but still need to check the `node->branch_tag`]

blender-admin commented

2019-10-01 12:45:13 +02:00

This issue was referenced by 9b034355e4

This issue was referenced by 9b034355e4ad60041b871254acfcc8e4f4f6b39a

Philipp Oeser removed their assignment 2019-10-02 12:54:33 +02:00

Clément Foucault was assigned by Philipp Oeser

2019-10-02 12:54:33 +02:00

Philipp Oeser commented

2019-10-02 12:54:33 +02:00

Added subscriber: @fclem