Cryptomatte Passes


The Cryptomatte Passes work with the Direct Light and Path Tracing kernels to render Cryptomattes for use in compositing. They are rendered one at a time, and they contain the masks for all object layers or materials in a scene. The masks also have correct anti-aliasing, and they take into account other features such as motion blur, transparency, and depth-of-field.

OctaneRender® generates Cryptomatte Passes according to the following IDs:

Figure 1: A Crymptomatte Pass render based on the names of the existing Object nodes in the scene