Comparing 2 Textures

First off, I don't know if you can do that with DX9, but here's my way:

I write a texture manager class that wraps the loading of textures. When I create the textures, I put them into an stl hash_map with name of the texture as the key. That way you can't load the same texture twice. Then you can make a class to wrap around the texture that keeps the name and just compare it to another texture object's name. If you don't want to do the manager thing, you don't have to and can just wrap the texture in a class, but the manager will save you from loading the texture twice.