We will continue our mini-series of blog posts about compositing in Maverick, with this video tutorial about masks:
Very often one needs to edit parts of the render in post-processing. A very typical case is when you need to create a catalog with different variations of the same product in a website.
A few days ago we posted a blog entry on Object Region Render, but there is an alternative way to generate masks for any part of the scene in one shot. These masks can then be used in photo-editing software such as Adobe Photoshop to select the pixels of a particular object or material, and constrain effects to the selected region.
Objects and materials in Maverick feature a rollup in the Attribute Editor where you can find the compositing options described in the above video. By default, objects inherit their compositing features from their parent. This is very convenient when objects are hosted in a group, as the group controls the compositing attributes of its children by default. Then, the AOVs panel allows you to enable certain layers that you can save alongside the rendered image, such as the Object ID or the Material ID AOVs. The video walks you through this process with the practical example of a car with a shadow catcher on a backplate.