Can i use bump map instead of normal map ?

A client of mine have only bump maps baked and doesn’t have the time to bake normal maps…

There is a NormalFroMHeightmap function that converts a heightmap into a normal map. That may somewhat help.

That said you might just as well do that conversion with Ndo or similar external program. Doesn’t take that much time.

Thanks, I think i will use that normalfromheightmap function, the other program costs money too…

Nvidia has some plugins for Photoshop that allow you to convert bump maps into normal maps.