In the MME menu (upper right of MMD screen) Select Effect Mapping, select your model, and Set Effect by navigating to your Raycast folder and inside the Main folder, choose main.fx.Load a Skybox model… and ignore it, for now… just let it be there, in the way.

If you load it early in your project, you will go crazy waiting for your computer to do every little step. (Raycast is “computer intensive” and your machine will hardly be able to crawl once you load Raycast.

Open MMD and create your entire animation, saving Raycast as a final step.

I find that Raycast is a complicated effect with “more than one way to skin a cat”… so these are the steps I go through to invoke Raycast: Basic instructions in the most simplistic form: I used to run it on an older standard 32-bit XP machine, and I did see some of the photographic rendering of my models, but I could not control and had no access to the many tools that a Win 10 64-bit machine will allow you. To use Ray-MMD, you should be running a 64-bit Windows 10 PC. Raycast / Ray-MMD is a complicated system that requires your trained, practiced adjustment of the many settings and tools. – You cannot just load it to see the effect it does not work that way. Raycast is a full, global environment control system for MMD involving image rendering with total control of textures, light and shadow. – Raycast is NOT an effect, at least not “just” an effect… It is not “just” a “shader”. Raycast / Ray-MMD doesn’t work like any effect you have ever tried, before. We have been getting MANY Comments from our readers about how to use Raycast and then, “Why doesn’t Raycast work?”

Raycast shader mmd tutorial 2018