Parameters used to create the shader chunk.
Optionalgeometry?: GeometryGeometry to use to check for tangent and bitangent attributes.
OptionalnormalTexture?: ShaderTextureDescriptorNormal texture descriptor to use if any.
normal (vec3f), geometryNormal (vec3f), tangent (vec3f) and bitangent (vec3f) values set.
Set the
normal(vec3f),geometryNormal(vec3f), and eventuallytangent(vec3f) andbitangent(vec3f) values if a normal texture is set.Tangent and bitangent are calculated using derivatives if the Geometry
tangentandbitangentattributes are missing.