V-Ray for Blender adds a number of textures specifically for use with V-Ray. See the links below for more information on the specific Textures.

V-Ray textures appear in the V-Ray Node Editor and can only be used within that editor when the render engine is set to V-Ray. 

UI Path: ||V-Ray Node Editor|| > Shader > Add > Textures 

Scroll down for a full list of all Texture nodes.