我试图将GLKView
嵌套在UIView
XIB中。基本上遵循以下步骤:
Nested GLKView and GLKViewController
我的CustomOpenGLController.xib只是一个GLKView
。
我的MainViewController.xib有一个GLKView
子视图。
在我的MainViewController.xib中,我有一个带有出口的GLKView
:
@property (weak, nonatomic) IBOutlet GLKView *theSubView;
然后在MainViewController.m中执行以下操作:
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(@"viewDidLoad");
subviewController = [[CustomOpenGLController alloc] initWithNibName:@"CustomOpenGLController" bundle:nil];
subviewController.view.frame = _theSubView.frame;
[subviewController setView:self.theSubView];
[self.theSubView setNeedsDisplay];
[subviewController didMoveToParentViewController:self];
}
这将导致调用
viewDidLoad
中的CustomOpenGLController
来执行以下操作:CustomOpenGLController.h
@interface CustomOpenGLController : GLKViewController <GLKViewControllerDelegate, GLKViewDelegate>
{
@private
GLKBaseEffect *effect;
}
#pragma mark GLKViewControllerDelegate
- (void)glkViewControllerUpdate:(GLKViewController *)controller;
#pragma mark GLKViewDelegate
- (void)glkView:(GLKView *)view drawInRect:(CGRect)rect;
@end
CustomOpenGLController.m
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(@"viewDidLoad");
EAGLContext *aContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
GLKView *glkView = (GLKView *)self.view;
glkView.delegate = self;
glkView.context = aContext;
glkView.drawableColorFormat = GLKViewDrawableColorFormatRGBA8888;
glkView.drawableDepthFormat = GLKViewDrawableDepthFormat16;
glkView.drawableMultisample = GLKViewDrawableMultisample4X;
self.delegate = self;
self.preferredFramesPerSecond = 30;
effect = [[GLKBaseEffect alloc] init];
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
}
问题是委托
glkViewControllerUpdate
和glkView
drawInRect没有被调用。如果我将
CustomOpenGLController
添加为子视图(而不是setView调用),则glkView
drawInRect会被调用一次。如果单独使用CustomOpenGLController
作为视图,那么一切都将完美运行。但是我需要将此
CustomOpenGLController
嵌入到普通视图控制器中。更新
如果我将MainViewController.m的
viewDidLoad
修改为以下内容,则它可以工作,但只渲染1帧,然后停止调用glkView
drawInRect:- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(@"viewDidLoad ControllerView");
subviewController = [[ControllerOpenGLViewController alloc] initWithNibName:@"ControllerOpenGLViewController" bundle:nil];
subviewController.view.frame = _theSubView.frame;
subviewController.view.opaque = NO;
subviewController.view.backgroundColor = [UIColor clearColor];
[self.view addSubview:subviewController.view];
[subviewController.view setNeedsDisplay];
NSLog(@"Done viewDidLoad ControllerView");
}
这奇怪地渲染1帧,然后停止。也不会调用
glkViewControllerUpdate
。 最佳答案
您将CustomOpenGLController
设置为子ViewController,但从未在addChildViewController
viewDidLoad中调用MainViewController
。您的问题可能来自此