Are there references available on your process for creating the grime texture? Is this hand drawn? Based on ambient occlus…

This topic has 3 replies, 4 voices, and was last updated 11 years ago by Ross Franks.

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July 16, 2015 at 9:58 pm #4223
Josh Brodie
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Are there references available on your process for creating the grime texture? Is this hand drawn? Based on ambient occlusion map?
August 19, 2015 at 11:10 am #22171
status451_cg
Participant
Total guess, but to me it looks like an AO map overlaid with a generic dirt/grime image (e.g. from CGTextures). So you would bake out the AO, set up the nodes to mix in the dirt/grime image and then bake out again.

Once again, that’s just a guess. I am sure Kent will be along shortly to answer definitively.
August 19, 2015 at 1:49 pm #22172
Kent Trammell
Participant
lewis2e is correct: It’s simply an AO bake with a generic grime texture on top set to “Overlay” blending mode.

I go over this kind of grime in depth in the Sci-Fi Helmet shading course: https://cgcookie.com/course/shading-the-sci-fi-helmet/
August 28, 2015 at 5:53 am #22173
Ross Franks
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Or would this be a good way of doing it too?
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