Power of 2 texture, containing squared icons in grayscale or color. You can use getTexture to load texture from URL.
OptionaliconSet the maximum size a icon can have. If not specified default is 16. Each icon can scale this value down by setting Icon.size to a skale between 0-1
The number of different icon in the same style. All icons in the set needs to have the same amount of style variations.
OptionalocclusionIf specified occlusion culling occurs at this interval in ms. If 0 occlusion culling occurs on every frame (very expensive)
E.g in a texture with 4 X 4 icons, the total amount is 16
Common icon atlas options.