kCVOpenGLESTextureCacheMaximumTextureAgeKey

By default, textures will age out after one second. Setting a maximum texture age of zero will disable the age-out mechanism completely. The Cvopenglestexturecacheflush(_:_:) function can be used to force eviction in either case.

let kCVOpenGLESTextureCacheMaximumTextureAgeKey: CFString