A texture whose contents can be dynamically updated.
- iOS 8.0+
- macOS 10.10+
- tvOS 9.0+
- watchOS 2.0+
Normally, SpriteKit textures (
SKTexture objects) are static, meaning that once created, their contents cannot be changed. This is important because a static image can be more efficiently managed inside the graphics hardware. However, sometimes you need to be able to update the contents of a texture dynamically. In this case, you should use a mutable texture. Because there is a performance penalty for updating the texture’s contents, consider other options first. For example, you can render a texture in hardware using the
texture(from:) method and a node tree.
To use this class, create a mutable texture using either one of its creation methods or those of its superclass. Then, when you need to update the mutable texture object’s contents, call the
modify method. Your block is called with the location of the texture in memory. Your block should update this texture and then return.