How to Add image to Objects | Procedural Texture Material | 3D Brick Wall in 3D with Spline

How to use a Roughness Map

1. Add an image layer with your Roughness Map.
2. On the lighting layer, select Physical.
3. Click on the lighting layer to assign a Roughness Map to it
4. Select the image you want to use as a Roughness Map from the
dropdown on the lightning layer's Rough Map section.
5.Use the Roughness, Metalness, and Reflectivity parameters to control the appearance of the Roughness Map.

💡 A roughness map helps control how shiny or rough a surface appears in a 3D object.
It uses the luminance (light/dark areas) of an image to guide how light interacts with the surface,
making lighter areas look smooth and reflective and darker areas look rough and less reflective.
Spline will automatically capture the luminance from any image layer
(color or black-and-white) and use it as the map.