Addnormals (Image program function)

Description

This function will add the normals of two normal map images and normalize the result.

Usage

addnormals ([map_1], [map_2])

Parameters

• [map_1] - The first of the two images to add.
• [map_2] - The second of the two images to add.

Example

Add two normal maps…

Combining both a height and a normal bump map using this function. This is the most common usage of addnormals.

textures/height_and_normal
{
    bumpmap addnormals ( textures/custom/image_1_local.tga, heightmap ( textures/custom/image_1_h.tga, 4 ))
}

Adding two different normalmaps together.

textures/add_two
{
   {
      blend bumpmap
      map   addnormals(textures/custom/image_1.tga, textures/custom/image_2.tga)
   }
}

Add three or more normal maps by nesting…

textures/add_three
{
   {
      blend bumpmap
      map   addnormals(textures/custom/image_1.tga, addnormals(textures/custom/image_2.tga,
                textures/custom/image_3.tga))
   }
}

Notes

None.