Normals

If you use a high resolution displacement or vector displacement texture, simply use a Materials/Displacement or a Materials/VectorDisplacement shader with the Displacement -> Displacement Mode attribute set to Displacement+Bump. You won't need any normal textures, the displacement will produce high frequency normals. The User Guide/Scene Graph Attributes/Displacement section.

Bump map

A greyscale texture used as a bump map.

Use a bump map in the Surface shader

1. In the RenderGraph, add a Surface node.
2. Add a Attributes/BumpMap sub-shader in the Surface > Normals > Normal attribute.
3. Choose a bump texture.

The Library/Attributes/BumpMap sub-shader. The Help > Samples > Bump NormalMap Displace sample project.

Normal map

A normal map texture used as a bump map.

Use a normal map in the Surface shader

1. In the RenderGraph, add a Surface node.
2. Add a Attributes/NormalMap sub-shader in the Surface > Normals > Normal attribute.
3. Choose a normal map texture.

The Library/Attributes/NormalMap sub-shader. The Help > Samples > Bump NormalMap Displace sample project.

Multiple normals

You can use different bump or normal maps for each Library/Materials/Surface shader BRDF. Proceed as above for the following outputs:

• DiffuseNormal: the normal for the diffuse BRDF.
• Spec1Normal: the normal for the Spec1 BRDF.
• Spec2Normal: the normal for the Spec2 BRDF.
• MetalNormal: the normal for the Metal BRDF.
• GlassNormal: the normal for the Glass BRDF.