Invoked on the delegate to let it unbind program values and/or also unbind associated graphic resources (such as textures).
- macOS 10.8–10.10Deprecated
SCNProgramobject to unbind values for.
The name of the symbol to unbind a value for.
The location of the symbol within the program object to be modified.
The underlying OpenGL program object in which the unbinding is done.
The renderer that is currently rendering the scene.
If you use the
handle method to associate a handler block with a SceneKit object for a symbol, SceneKit will not call the delegate’s
program: method for that symbol when rendering that object.