Boolean modifier breaks colour/uv attribute in shader #60552

New Issue

boolean disables colour attribute.blend

System Information
Operating system: Windows 10
Graphics card: RTX 2080

Blender Version
Broken: 2.80 beta (2019-01-12, 2826c2be54)

Short description of error
Applying a boolean modifier to an object causes the colour attribute to become black when the object is in object mode. When the object is in edit mode, the colour is shown appropriately.

Exact steps for others to reproduce the error
Load the default start-up file.
Set the display mode to workbench.
Copy the default cube and move it so it partially overlaps the first cube.
Add a boolean modifier to the first cube with the second cube as boolean object.
Add a vertex colour to the first cube.
Set the colour to be red on the whole cube.
Add a material to the first cube that takes the colour attribute and passes it to an emission shader.
Note that in edit mode the cube displays red as expected. However, in object mode the cube displays black instead of red.
Note that disabling the boolean modifier will cause the cube to be displayed red as well.

**System Information** Operating system: Windows 10 Graphics card: RTX 2080 **Blender Version** Broken: 2.80 beta (2019-01-12, 2826c2be545e) **Short description of error** Applying a boolean modifier to an object causes the colour attribute to become black when the object is in object mode. When the object is in edit mode, the colour is shown appropriately. **Exact steps for others to reproduce the error** Load the default start-up file. Set the display mode to workbench. Copy the default cube and move it so it partially overlaps the first cube. Add a boolean modifier to the first cube with the second cube as boolean object. Add a vertex colour to the first cube. Set the colour to be red on the whole cube. Add a material to the first cube that takes the colour attribute and passes it to an emission shader. Note that in edit mode the cube displays red as expected. However, in object mode the cube displays black instead of red. Note that disabling the boolean modifier will cause the cube to be displayed red as well. [boolean disables colour attribute.blend](https://archive.blender.org/developer/F6301113/boolean_disables_colour_attribute.blend)

Tober commented

Added subscriber: @Tober-1

blender-admin commented

#61967 was marked as duplicate of this issue

blender-admin commented

#61426 was marked as duplicate of this issue

blender-admin commented

#61370 was marked as duplicate of this issue

blender-admin commented

2019-01-16 12:05:22 +01:00

#61299 was marked as duplicate of this issue

Jacques Lucke commented

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-01-16 12:05:22 +01:00

Did this work in Blender 2.79?

William Reynish commented

2019-01-16 12:10:32 +01:00

Added subscriber: @WilliamReynish

William Reynish commented

2019-01-16 12:10:32 +01:00

I can't reproduce it here. It seems to work correctly, taking the correct vertex colors from the boolean object, which works correctly in materials too.

I can't reproduce it here. It seems to work correctly, taking the correct vertex colors from the boolean object, which works correctly in materials too. ![Screenshot 2019-01-16 at 12.09.21.png](https://archive.blender.org/developer/F6305028/Screenshot_2019-01-16_at_12.09.21.png)

Philipp Oeser commented

Added subscriber: @lichtwerk

Philipp Oeser commented

Changed status from 'Open' to: 'Archived'

Philipp Oeser closed this issue

Philipp Oeser self-assigned this 2019-01-16 12:18:05 +01:00

Philipp Oeser commented

2019-01-16 12:18:33 +01:00

yeah, you need to have VCols on both objects [both objects have the same material], otherwise these wont transfer over. Like so:
boolean disables colour attribute corrected.blend

Dont see a bug here, closing...

yeah, you need to have VCols on both objects [both objects have the same material], otherwise these wont transfer over. Like so: [boolean disables colour attribute corrected.blend](https://archive.blender.org/developer/F6305091/boolean_disables_colour_attribute_corrected.blend) Dont see a bug here, closing...

Jacques Lucke commented

@WilliamReynish, does the file he uploaded work for you? I only see black when setting it to rendered view. When I disable the boolean modifier, it works as expected.

[EDIT] @lichtwerk, ah that makes sense. Thanks for the explanation.

@WilliamReynish, does the file he uploaded work for you? I only see black when setting it to rendered view. When I disable the boolean modifier, it works as expected. [EDIT] @lichtwerk, ah that makes sense. Thanks for the explanation.

Tober commented

2019-01-16 12:36:04 +01:00

Thank you for the quick explanation, Philipp.

Philipp Oeser commented

Changed status from 'Archived' to: 'Open'

Philipp Oeser reopened this issue

Philipp Oeser commented

Added subscriber: @ideasman42

Philipp Oeser commented