Join Aaron F. Ross for an in-depth discussion in this video Adding a clear coat, part of 3ds Max: Advanced Materials.
- [Instructor] To conclude our chapter on hard surface materials with the physical material, let's look at adding a clear coat so we can have the effect of, for example, varnished wood. We've got our bumpy metal here, let's change that up, set the Bump Map value down to zero, and make it a white reflection color. Set the Metalness to a value of zero.
Set the Reflection Roughness to 0.6, and the index of Refraction here to 1.5. Now we've got our base diffuse material, and it's got some subtle highlights here because we have a roughness of 0.6. Up at the top of the material editor, we'll see coding parameters roll out, open that up, and it's defaulted to a white clear coat color.
Let's increase the clear coat amount to its maximum of one, and immediately we see the effect here of an extra layer of specular highlights. We can change that color, click in the swatch, just give it a little bit of a pink color, and immediately we see how that's going to affect the underlying color, which is the base here. Click OK to close that color selector, and then we can play around with some of these other parameters. Coding IOR, that's only going to affect the reflection distribution for the clear coat itself, and if we give it a higher value, then we will see stronger highlights facing the camera.
Set it to a value of two, and now you can see we've got some pretty unrealistic but very strong highlights. I'll set it down a bit to 1.7. We can spread out those highlights a little bit, give the clear coat roughness a value of 0.1, and here we have Affect Underlying Color and Affect Underlying Roughness, and that, of course, will influence the basic parameters down here. Set Affect Underlying up to its maximum of one, and we're essentially tinting the base color with the clear coat color.
We can also increase the Underlying Roughness up to its maximum of one, and that helps us to simulate the effect of light bouncing around inside the varnish itself. We can reduce that clear coat amount down to half or 0.5, and I think that gives us a little bit more realistic effect, preserving the base color a bit better. That's how to add a clear coat with the physical material, and that concludes our chapter on hard surface materials.
- Streamlining material editor workflow
- Managing XREFs and materials
- Laying out a scene for material testing
- Using the Physical Material
- Controlling highlights with Roughness
- Directing reflections and refractions
- Simulating translucency and scattering
- Building a shading network
- Combining and color correcting maps
- Baking maps such as ambient occlusion
- Procedural mapping with Substance
- Using relief maps: bump, normal, and displacement