Applies to 2024.0 Update and later

To extrude from a texture

Generate surface features from vertex and pixel colors

Select the part in the project tree and choose Modify > Texture and color.
If your part has texture or color already, you can skip this step, otherwise apply color or texture now. In the latter case, you can keep Texture and color open; you do not have to apply, close, and reopen the editor to proceed with extrusion.
Adjust the values as necessary.
Click Extrude for a preview. You can undo this if needed to start over.
Click Apply changes to produce the part with the imposed texture.

Extrusion options reference

Manage settings	Several controls to store and recall values for the dialog so that they do not need to be entered newly again
Maximum edge length	Subdivides the existing triangle mesh along the texture's borders and subsequently the textured area. Note: Very small edge values increase calculation time.
Displacement for white, Displacement for black	Sets the bracket of displacement. A positive value pulls the colored area out of the original geometry. A negative value subtracts the colored area from the original volume. Depending on which parameter receives the more positive number than the other, the extrusion result can be a positive or a negative of the original texture.
Extrude area	Switches between Whole Part and names of applied textures, if the part has any applied. Causes to either apply extrusion to the entire part covered by any texture or the area of only the selected texture.	Note: If the part has only one texture partially covering the available surface, and no further color or texture information, both available options have the same effect.
Extrude texture, Extrude color	Limits the extrusion to the respective sources in case there are both color information and textures that can be extruded	A red indicator to the left of the checkbox means there is no texture or color that could be extruded with.