Does bitmap caching affect objects that are not on stage?
位图缓存的影响，不在舞台上的对象吗？
On an older computer of mine, using bitmap caching for an object that is always on stage has decreased performance.
在旧的电脑的矿井，使用位图缓存的对象总是在舞台上有性能下降。
Similarly, soft references are also often used in GUI applications for caching bitmap graphics.
类似地，软引用也经常用于 GUI 应用程序中，用于缓存位图图形。
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