使用 CADisplayLink 强制重绘
我目前正在使用 CADisplayLink 来显示 OpenGL 动画，效果非常好。然而，有时参数发生变化，我需要立即重绘视图，而不能等到 CADisplayLink 请求下一帧。如果我不这样做，我就会得到一帧错误，这在我的情况下看起来非常糟糕。
那么，如何在不干扰 CADisplayLink 内容的情况下强制重绘 EAGLView 呢？
I'm currently using CADisplayLink to show an OpenGL animation which works great. Sometimes, however a parameter changes and I need to redraw the view immediately and can't wait until the next frame is requested by CADisplayLink. If I don't do that, I get one frame wrong which looks really bad in my case.
So, how can I force a redraw of an EAGLView without interfering with the CADisplayLink stuff?
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例如，如果您的 CADisplayLink 正在调用方法drawFrame，则只需在需要时自己调用drawFrame即可。如果您不愿意，则没有理由需要等待 CADisplayLink。
If your CADisplayLink is calling method drawFrame, for example, then just call drawFrame yourself when you need to. No reason you need to wait for CADisplayLink if you don't want to.
您的问题表明您将数据存储在视图中而不是数据对象中。您应该能够随时更改数据，并且您的视图应该在需要显示时更新。将数据移动到模型对象，并让
EAGLView在 CADisplayLink 请求时根据数据自行绘制，而不是在数据更改时重新绘制自身。Your question suggests that you're storing your data in your view rather than in a data object. You should be able to change your data at any time, and your view should update when its needed to display. Move the data to a model object, and have the
EAGLViewdraw itself based on the data when requested from theCADisplayLinkrather than redrawing itself when the data changes.