This is more of an interactive demo, so it's not like average indies can download the package and learn how to make their own photorealistic digital humans with marker-based facial rigs. Now the big question is, who is this aimed for? Being honest, I have to say this is definitely not aimed at indies. While a lot of the shader is connected to the Snappers rig, other parts show you how to simulate other parts of the realistic human, like skin highlights and SSS, how to combine lacrimal areas, etc. For example, you can see that the Snapper technology is even implemented on the shader, as a way to add maps that handle different kinds of details. The face skin material is created using Shader Graph, and you can just open it to see how it works. The facial rig technology is provided by a company called Snappers, that specializes on character modeling and facial rigging and animation for cinema or video games. You can pose the face using a few different markers and, what's interesting, is that it only has 37 markers, and they work on a certain way that make it easy to pose the face. One of the things I found more interesting is the facial rig. As I said before, one of the things included in the package is a real-time posing rig, and that can be used to pose the character when you select the Pose mode. For example, you can switch cameras, and also switch animation modes. When you enter Play Mode, you see there are a lot of options available. The model alone has over 200K triangles, meaning that the details are a combination of geometry plus normal maps. This level of detail is not surprising, though. Obviously, the only thing missing is some hair (on a side note, Unity really needs a good hair solution that doesn't rely on polygon planes + transparency maps). The level of detail the character offers, and the realism of the materials (fabric and skin) is excellent.
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