Clearcoat Reflective Index defines how much light bends or refracts as it passes through the clearcoat layer, influencing both transparency and reflections. Higher values create stronger light bending, resulting in more pronounced refraction and reflection.
This shading model can use two texture maps:
- Refractive Index Map (Grayscale): Controls the degree of light bending. White areas bend light more strongly, affecting transparency and reflections, while black areas have minimal effect.
- Metalness Map (Grayscale): Defines metallic (white) and non-metallic (black) regions, influencing how reflections behave in combination with the clearcoat.
Both maps can be painted in Toolbag using a Texture Project, baked inside Toolbag, sourced from the Toolbag Library, or created in third-party applications.
| Setting | Description |
|---|---|
| Refractive Index Map Texture Slot | Add a refractive index texture by clicking on the slot or dragging and dropping one from the Library. |
| Channel Selection | Determines which channel of the texture map will be used. It’s useful when, instead of using multiple single textures, you use one texture with different grayscale maps in the different texture channels: Red, Green, Blue, and Alpha. |
| Refractive Index | Sets the index of refraction for this material, which indirectly affects the surface’s reflectivity. Higher values will be more reflective, and will also distort light to a greater degree when used in conjunction with refractive transmission. |
| Metalness Map Texture Slot | Add a metalness texture by clicking on the slot or dragging and dropping one from the Library. |
| Channel Selection | Determines which channel of the texture map will be used. It’s useful when, instead of using multiple single textures, you use one texture with different grayscale maps in the different texture channels: Red, Green, Blue, and Alpha. |
| Metalness Value | Sets the metalness value, which should generally be 0 for insulators or 1 for metals. When a metalness map is loaded, this value should be set to 1. |
| Invert | Inverts the metalness value so that white defines insulators, and black defines metals. |
