Photo: Advanced Texture/Image Brush

[JeffreyWalther]

Coming from this post: 

I wished there was a more advanced image/texture brush available.

In Blender, you can set up such a brush, by simple loading a texture.
And dependent on the brush size, the sampled texture is applied accordingly.
You even can set that the painted texture should be randomly sampled from the source texture.

Such a brush I do really miss in Photo.