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# multiply

An object that provides color values that are multiplied with pixels in a material after all other shading is complete.

```
var multiply: SCNMaterialProperty { get }
```

## Discussion

After combining a material’s other visual properties with lighting and other information about a scene, Scene kit multiplies the color of each rendered pixel by the color this property provides. You can use this property to darken or tint a surface independent of the effects of lighting and other properties, or to add precomputed lighting to a scene via a shadow map.

By default, the multiply property’s [`contents`](/documentation/SceneKit/SCNMaterialProperty/contents) object is a white color, causing the property to have no visible effect.

The figure below shows a material (with textures for its [`diffuse`](/documentation/SceneKit/SCNMaterial/diffuse) and [`emission`](/documentation/SceneKit/SCNMaterial/emission) properties) before and after setting the multiply property’s contents to a solid color. Notice that the multiply color modulates even the bright areas added by the emissive map.

![](images/com.apple.scenekit/media-2934159@2x.png)

## See Also

[`normal`](/documentation/SceneKit/SCNMaterial/normal)

An object that defines the nominal orientation of the surface at each point for use in lighting.

[`emission`](/documentation/SceneKit/SCNMaterial/emission)

An object that defines the color emitted by each point on a surface.


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