Blend modes control how overlapping pixels are blended together, similar to layers in Photoshop.
|alpha||Normal blending where the alpha value controls how the colors are blended.|
|add||The incoming pixel color is added to the destination pixel color.|
|subtract||The incoming pixel color is subtracted from the destination pixel color.|
|multiply||The color channels from the two pixel values are multiplied together to produce a result.|
|lighten||The maximum value from each color channel is used, resulting in a lightening effect.|
|darken||The minimum value from each color channel is used, resulting in a darkening effect.|
|screen||The opposite of multiply: The pixel values are inverted, multiplied, and inverted again, resulting in a lightening effect.|