GLKSkyboxEffect provides a standard skybox effect for your application. Unlike the
GLKBaseEffect class, the skybox does not require your application to configure and submit vertex data. Instead, it creates its own vertex data based on the configuration data you supply.
- iOS 5.0+
- macOS 10.8+
- tvOS 5.0+
At initialization time, your application first creates a compatible context and makes it current. Then, it creates new skybox effect, configures its properties, and calls its
prepareToDraw() method. Binding the effect causes a shader to be compiled and bound to the current context.