The Problem:
The problem with rotating a normal map in photoshop is that it’s unaware of the direction of the vectors or RGB channels. Rotating a normal map by 180° in any image processor will be equivalent to negative normal strength – things that are supposed to stick out will be caved in and vice-versa.
The solution:
After a few days of trying to find a tool to rotate a normal map I put together my own.
Using three.js we can apply the original normal map on a plane, rotate the plane, render the plane with Normal material texture, and the result takes into account the normal map rotation.
Try it for yourself
Open Normal Map Rotation ToolTodo
- Flip Horizontal and Vertical
- Normal Map Strength
- …let me know!
Hi Miro,
thanks for the tool but I’m unable to save the edited map, I’m using Firefox.
Hi Beppe, thanks for pointing this out. You should now be able to save it using Firefox. I’ve added a “Download Map” in the upper right menu just in case.
great tool! U should sell this 😉
Nice!