黑屏/没有事件在iOS OpenGL ES 2 [英] black screen / no events in iOS OpenGL ES 2

问题描述

我正在处理大约45天的错误。我已经尝试过数十种方法调用，更改整个程序，但没有任何工作。

我使用GLES 2，具有作为rootViewController的UIViewController，具有键入UIView，其层类为CAEAGLLayer。

当我运行应用程序时，屏幕变黑，如果我按屏幕，则不会生成事件。

如果我旋转应用程序，屏幕将出现，并且事件工作。最糟糕的是，如果我不旋转应用程序，而是在presentRenderbuffer之后放置一个断点，然后按下Xcode中的Capture OpenGL ES Frame按钮，屏幕将出现，事件开始工作！

我觉得视图没有被显示，但是，我实现了viewWillLayoutSubviews，viewWillAppear，viewDidAppear，loadView（我在哪里开始一切），所有这些方法都得到按以下顺序调用：

加载视图
视图将出现
视图将布局子视图
视图出现

此外，该视图实际上是一个有效的框架大小。

对于这个绝望的用户，任何帮助都非常感谢。 b
$ b

解决方案

此问题的解决方案是：在主线程中设置上下文创建所有窗口，然后通过调用

 共享所有线程之间的open gl上下文[EAGLContext setC urrentContext：glcontext] 
  

每个线程

I'm dealing with an error for about 45 days. I already tried dozens of method calls, change the whole program, but nothing works.

I use GLES 2, with a UIViewController that is the rootViewController, that has a view of type UIView, whose layerclass is CAEAGLLayer.

When i run the application, the screen gets black and if i press the screen, no events are generated.

If i rotate the application, the screen appears and the events work. Even worst, if i dont rotate the application, but put a breakpoint right after the presentRenderbuffer, and press the "Capture OpenGL ES Frame" button inside Xcode, the screen appears and the events start working!!!

What i feel is that the view is not actually shown, however, i implemented the viewWillLayoutSubviews, viewWillAppear, viewDidAppear, loadView (where i start everything), all these methods gets called in this order:

load view view will appear view will layout subviews view did appear

Also, the view has actually a valid frame size.

Any help is greatly appreciated for this desperate user.

guich

解决方案

The solution to this problem was: setup the context in the main thread, where all windows are created, and then share the open gl context between all threads by calling

[EAGLContext setCurrentContext:glcontext]

at each thread

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