User Guide (Version 1.13)

Setting Material Opacity

An object's opacity refers to its transparency level. Opacity is important when using an alpha channel for transparency.

To set opacity for a material

  1. In Lumberyard Editor, click Tools, Material Editor.

  2. In the left pane, click to select the desired asset.

  3. Under Opacity Settings, click and adjust the values of the following parameters:

    1. Opacity: Values below 50 tends more to the white end of the alpha channel map. Values above 50 tends more to the black end of the alpha channel map.

    2. AlphaTest: Used to achieve soft, semi-transparent results. To use AlphaTest, set the Opacity value to 100 and the AlphaTest value to 50.

    3. Additive: When selected, the material color will be added to the scene background color behind the object, with the resulting color being brighter. This is used for almost transparent materials like glass.