Baking with Cycles using a custom cage always returns "No valid cage object" #58917

New Issue

Gabriele Coen · 2018-12-07T09:36:35+01:00

Gabriele Coen commented

2018-12-07 09:36:35 +01:00

System Information
Operating system: Win10 64
Graphics card: Quadro M5000

Blender Version
Broken: 2.80, 606223f6a6, blender2.8, 2018-12-07
Worked: 2.79b

Short description of error
Baking normals from a high resolution mesh to a low poly mesh using a custom cage always results in a "No valid cage object" error and nothing is baked. Same for baking diffuse texture.
I've been trying to do it from a scanned high resolution mesh that I can't provide, but I'm attaching a simple test scene that reproduces the issue.

Exact steps for others to reproduce the error
cage_bake_test.blend
In the provided scene it should be as simple as pressing the Bake button at the bottom of the render tab as everything should be already selected.

The steps I followed are:

Import high poly mesh (I created one for the test scene).
Create low poly target object.
Duplicate low poly mesh and fatten it to create a cage.
Assign new Cycles material to low poly object.
In the Image editor create new Image.
In the Node editor create new Image Texture and assign the previously created Image to it.
In the Bake section of the render options, select Normals from the dropdown menu and tick Selected to Active and Cage options.
Set the cage object.
Select the source mesh, then select the target mesh.
Make sure the image texture node is selected in the Node editor.
Press the Bake button and you should receive the error.

**System Information** Operating system: Win10 64 Graphics card: Quadro M5000 **Blender Version** Broken: 2.80, 606223f6a61, blender2.8, 2018-12-07 Worked: 2.79b **Short description of error** Baking normals from a high resolution mesh to a low poly mesh using a custom cage always results in a "No valid cage object" error and nothing is baked. Same for baking diffuse texture. I've been trying to do it from a scanned high resolution mesh that I can't provide, but I'm attaching a simple test scene that reproduces the issue. **Exact steps for others to reproduce the error** [cage_bake_test.blend](https://archive.blender.org/developer/F5867565/cage_bake_test.blend) In the provided scene it should be as simple as pressing the Bake button at the bottom of the render tab as everything should be already selected. The steps I followed are: - Import high poly mesh (I created one for the test scene). - Create low poly target object. - Duplicate low poly mesh and fatten it to create a cage. - Assign new Cycles material to low poly object. - In the Image editor create new Image. - In the Node editor create new Image Texture and assign the previously created Image to it. - In the Bake section of the render options, select Normals from the dropdown menu and tick Selected to Active and Cage options. - Set the cage object. - Select the source mesh, then select the target mesh. - Make sure the image texture node is selected in the Node editor. - Press the Bake button and you should receive the error.

Gabriele Coen commented

2018-12-07 09:36:35 +01:00

Added subscriber: @yeeeeeeee

Sebastian Parborg commented

2018-12-07 10:40:43 +01:00

Added subscribers: @brecht, @ZedDB

Brecht Van Lommel was assigned by Sebastian Parborg

2018-12-07 10:40:43 +01:00

Sebastian Parborg commented

2018-12-07 10:40:43 +01:00

Don't know if it is you or Dalai I should assign this to @brecht.

Dalai Felinto commented

2018-12-07 11:25:11 +01:00

Added subscriber: @dfelinto

Brecht Van Lommel was unassigned by Dalai Felinto

2018-12-07 11:25:11 +01:00

Dalai Felinto self-assigned this 2018-12-07 11:25:11 +01:00

Dalai Felinto commented

2018-12-07 11:25:11 +01:00

Super confirmed, and the issue is a bit more strange in fact. I made an example that works in 2.79[*]:
baking-with-cage-279.blend

In 2.79 it works fine, and you can even bake Combined. In 2.80, however:

The "cage" property shows red, and in fact it bakes as if it there was no cage.
Once you set a cage, it indeed says no object.

- Tip for the task author, if the reported bug works in 2.79, it helps to have a file saved in 2.79 instead of 2.80 that works in both versions so we can quickly compare.

Super confirmed, and the issue is a bit more strange in fact. I made an example that works in 2.79[*]: [baking-with-cage-279.blend](https://archive.blender.org/developer/F5868394/baking-with-cage-279.blend) In 2.79 it works fine, and you can even bake Combined. In 2.80, however: 1) The "cage" property shows red, and in fact it bakes as if it there was no cage. 2) Once you set a cage, it indeed says no object. * - Tip for the task author, if the reported bug works in 2.79, it helps to have a file saved in 2.79 instead of 2.80 that works in both versions so we can quickly compare.

Dalai Felinto commented

2018-12-07 11:43:21 +01:00

Investigation update: bpy.context.scene.render.bake.cage_object is correct (e.g., "MyCage"), however when you clear it and reassign to the cage object you get leading spaces (e.g., " MyCage").

Dalai Felinto commented

2018-12-07 13:46:49 +01:00

Changed status from 'Open' to: 'Resolved'

Dalai Felinto closed this issue

2018-12-07 13:46:49 +01:00

Dalai Felinto commented

2018-12-07 13:46:49 +01:00

The original report is now fixed. Baking in 2.8 is still a bit strange/different when comparing to 2.7. That is a different issue than the reported one though.

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Baking with Cycles using a custom cage always returns "No valid cage object" #58917