Just one texture.
Redered with Cycles.
600 samples.
Render time in my computer: 30’ (i7 dual core, 4Gb Ram, Macbook Pro)
Render time in render.st: 1’40’’
My first desktop background. 
https://dl.dropboxusercontent.com/u/19619068/Blender/Cops_01_00000.png
I don’t know why but i can’t upload the file, so above is the link to it. I’ll try later.
Kind regards,
Alex
