Adding Dirt Using an OSL Ambient Occlusion Shader

Bart · March 4, 2014

Gleb Alexandrov is back with a new quick tip. Today, he uses an Open Shading Language script that can carefully control ambient occlusion on a rocket artillery model. It’s also the first time we hear his voice!

Author Bart

I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the Blender Artists forum and I'm Community Lead at n8n.

14 responses

Lugus

4 March 2014 at 09:25

Thanks to François Gastaldo for his OSL shaders.

http://vadrouillegraphique.blogspot.fr/

Spelle
4 March 2014 at 10:57
Sure thing, he makes a brilliant stuff!
Reply

Jon Bowden

4 March 2014 at 09:59

nice tip thanks for sharing

Spelle
4 March 2014 at 10:57
you’re welcome ;)
Reply

Blackbox Corp

4 March 2014 at 12:16

Another good way to get a edge masks, is to bake a monochrom curvature map. The big advantage – you can use the texture in every engine.

Utopia780
4 March 2014 at 13:29
Curvature map in Blender?
Reply
1. Spelle
  4 March 2014 at 14:35
  I’m also interested in hearing about the curvature map :)
  Reply
  1. Blackbox Corp
    4 March 2014 at 23:47
    It isnt possible with Blender, but we can use xNormal. It is a “free-to-use” tool for baking textures like normals, ao maps, cavity and alot more. Curvature maps included.
    Curvature maps are a good starting point for gloss maps, too.
    Reply
    1. Utopia780
      6 March 2014 at 14:08
      “Windows installer”
      Danm!! I have a Ubuntu and a Mac!
    2. Blackbox Corp
      6 March 2014 at 17:31
      This is the reason why I am forced to use Windows. I would love to use Ubuntu, but it isnt possible. Alot of applications arent available for Linux :/ ….but this is another story ^^
    3. Utopia780
      6 March 2014 at 20:42
      To compensate mac user have Crazy Bump for free! /