Toolkit 2 - Ambient Occlusion

Before doing this tutorial, I didn't actually know what the point of ambient occlusion was.

Starting with this car that Alan already made a beauty pass for.

Select everything in the scene and replace the textures with "aiAmbientOcclusion".

Here's the first ambient occlusion render.

Here's the second with the glass removed.

After exporting and opening in Photoshop, you combine the ambient occlusion pass and beauty pass to create a final composition with correct shadows.