materials iconHow to Quickly Add Dirt to Crevices

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Software:
  • Blender 2.69
Discover How To:
  • Create dirt and grunge in cracks and crevices
  • Use the Dirty Vertex Color tool
  • Use vertex painting and apply it to the material

Chapter Marks (Full Length )

materials icon0.37materials icon2.39
Software:
  • Blender 2.69
Discover How To:
  • Create dirt and grunge in cracks and crevices
  • Use the Dirty Vertex Color tool
  • Use vertex painting and apply it to the material

Chapter Marks (Full Length )

materials icon0.37materials icon2.39

Final Result

3D Blender Tutorials_Dirt to Crevices

 

Download the Starter file from BlendSwap

 

Hope you find it useful :)

Don’t forget to post your results in the comments below.

Summary

1. Select the model you want to add dirt to.

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2. Go into Vertex Paint mode (V) and in the menu, select Paint>Dirty Vertex Colors.

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3. In the toolbar (T) change the blur strength to 0.5 (the lower the value, the sharper the effect).

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4. Change the highlight angle to 90 (this basically acts as a threshold – the lower the less dirt will appear all over your model).

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5. In the object panel, find the new Vertex Color entry and name it something useful like Dirt Map.

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6. To use the Vertex color data in your material, go to the node editor and add an Attribute node (Add>Input>Attribute). In the name field, type the name of your Vertex Color group (Dirt Map).

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7. Add a MixRGB node and connect the Fac output of the Attribute node, to the Fac input. Connect your base material to the bottom input.

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8. Change the color of the middle input to whatever color you want the dirt/grime to be (green or brown works well).

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Render now and you’ll see a faint green tinge buried in the crevices of your mesh. Finished!

Piece of cake!

Piece of cake!

 

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