License in different platforms

If someone needs to use one of the features that are found in the Pro version of every platform - PC/Mac, Android, iOS -, and want to build for all platforms, does he need to acquire every license or is it enough to have one Pro license?

For example, if I use RenderTexture and have one PC/Mac Unity Pro license, can I build to Android?

You can see on the license comparison page what features are available on what platforms and licenses. In this case you can see that Android Pro has rendertexture effects, and the free Android publishing does not.