I think it’s really a bug. Many people will encounter the same thing, I bet.
The problem: UV Painting works in UV/Image Editor, not in 3D View. On 3D view, it is showing the circle, cursor moving but nothing happens.
I really expect it to work right away when I jump to UV Editing, and switch to Texture Paint mode. But it does not. I found the solution, after 1+ hour of trying, do this in order:
- Go to your 3D view panel, hit TAB.
- Now with your 3D view in Edit Mode, your UV editing panel (on the left side) should show the UV lines.
- Select the image texture that you like to Texture Paint in the UV Editing panel.
- Hit TAB again in 3D view. Now painting in 3D view is working!! Why? No idea.
Is this happening to anyone?