drawableWidth
The width, in pixels, of the underlying framebuffer object.
Declaration
var drawableWidth: Int { get }Discussion
The height and width of the underlying framebuffer object is calculated automatically by the view object based on its bounds and contentScaleFactor properties and change whenever either of those properties change. Your application never directly adjusts the size of the framebuffer object. Instead, your application should read the drawableHeight and drawableWidth properties and use those to configure its OpenGL ES rendering code. For example, you might use the drawableHeight and drawableWidth properties to set the OpenGL ES viewport, determining the size and complexity of the art assets to load, and so on.