Normal Blend

Filters / Normal Map

Composites two tangent-space normal maps. When Opacity Map is connected, it controls foreground strength; otherwise Opacity controls foreground strength.

Select a node to adjust its parameters. Double-click a node to inspect.

Inputs

background
foreground
opacity_map (optional) : Optional per-pixel foreground strength. When connected, this replaces Opacity.

Parameters

Parameter	Type	Default	Range	Description
`mode` Mode	enum	mix		Normal compositing mode. Mix interpolates between Background and Foreground. Combine adds Foreground as detail on Background using Reoriented Normal Mapping. `mix` : Interpolate between Background and Foreground normals. `combine` : Add Foreground as detail on Background using Reoriented Normal Mapping.
`opacity` Opacity	float	1	0 to 1	Foreground strength when Opacity Map is not connected. If Opacity Map is connected, Opacity Map controls foreground strength instead.
`normal_map_format` Normal Map Format	enum	match_graph		Normal map format: Match Graph, OpenGL (Y-up), or DirectX (Y-down). `match_graph` : Use the graph's normal format. `opengl` : Interpret normal maps with OpenGL Y-up green channel orientation. `directx` : Interpret normal maps with DirectX Y-down green channel orientation.

Outputs

output (default format: rgba16float)