Freestyle will not render edges selected by Edge Type: Material Boundary, if the materials are different, but look identical. #42351

New Issue

Bart Robinson · 2014-10-22T19:09:03+02:00

Bart Robinson commented

2014-10-22 19:09:03 +02:00

System Information
Microsoft Windows 7 Ultimate Service Pack 1 64 bit and NVIDIA Quadro FX 3450 (irrelevant, using Blender Internal renderer on CPU)

Blender Version
Broken: Version:2.72a Date: 2014-10-15 15:23 Hash:73f5a41
Worked: Haven't seen it work.

Short description of error
Freestyle will not render edges selected by Edge Type: Material Boundary, if the materials are different, but look identical.

Exact steps for others to reproduce the error

Open Blender (keep default Cube scene, leave Cube selected).
Turn on Freestyle rendering in Render Properties.
Switch to Render Layers Properties
In Freestyle Line Set panel, Edge Types, uncheck: Silhouette, Border, Crease.
In Freestyle Line Set panel, Edge Types, check: Material Boundary
Enter edit mode (on already selected Cube object).
Switch to Face Select mode.
Deselect all faces.
Select one face.
Switch to Material Properties.
Add a new material slot.
Browse a material to be linked and select "Material", the material already applied to the other faces.
Make it a single user material, (used to be done by clicking on the "2", but seems you now have to click "+" so you get a duplicate and identical (settings-wise, but different material). Name is now most likely "Material.001".
Click Assign, to assign "Material.001" to the selected face.
Return to Object mode.
Render image
No edge will be rendered around the material boundary.

Tweak to "push" it to work:
Adjust a Color or Freestyle Line Priority on one of the materials. All of a sudden the material boundary edge is rendered.

Issues:
Nothing in the Blender documentation or Blender setting names or tooltips notes that the material has to look different for the material boundary edge to be rendered. A material boundary setting indicates the material needs to BE a different material, not LOOK like a different material or have a different color.

File also posted to: http://www.pasteall.org/blend/32287

Blender2.72AFreestyleMaterialBoundaryBug.blend

**System Information** Microsoft Windows 7 Ultimate Service Pack 1 64 bit and NVIDIA Quadro FX 3450 (irrelevant, using Blender Internal renderer on CPU) **Blender Version** Broken: Version:2.72a Date: 2014-10-15 15:23 Hash:73f5a41 Worked: Haven't seen it work. **Short description of error** Freestyle will not render edges selected by Edge Type: Material Boundary, if the materials are different, but look identical. **Exact steps for others to reproduce the error** 01. Open Blender (keep default Cube scene, leave Cube selected). 02. Turn on Freestyle rendering in Render Properties. 03. Switch to Render Layers Properties 04. In Freestyle Line Set panel, Edge Types, uncheck: Silhouette, Border, Crease. 05. In Freestyle Line Set panel, Edge Types, check: Material Boundary 06. Enter edit mode (on already selected Cube object). 07. Switch to Face Select mode. 08. Deselect all faces. 09. Select one face. 10. Switch to Material Properties. 11. Add a new material slot. 12. Browse a material to be linked and select "Material", the material already applied to the other faces. 13. Make it a single user material, (used to be done by clicking on the "2", but seems you now have to click "+" so you get a duplicate and identical (settings-wise, but different material). Name is now most likely "Material.001". 14. Click Assign, to assign "Material.001" to the selected face. 15. Return to Object mode. 16. Render image 17. No edge will be rendered around the material boundary. Tweak to "push" it to work: Adjust a Color or Freestyle Line Priority on one of the materials. All of a sudden the material boundary edge is rendered. Issues: Nothing in the Blender documentation or Blender setting names or tooltips notes that the material has to look different for the material boundary edge to be rendered. A material boundary setting indicates the material needs to BE a different material, not LOOK like a different material or have a different color. File also posted to: http://www.pasteall.org/blend/32287 [Blender2.72AFreestyleMaterialBoundaryBug.blend](https://archive.blender.org/developer/F119185/Blender2.72AFreestyleMaterialBoundaryBug.blend)

Bart Robinson commented

2014-10-22 19:09:03 +02:00

Changed status to: 'Open'