ios – 使用SCNRenderer时不呈现overlaySKScene

概述我正在使用SCNRenderer将场景渲染到现有的OpenGL上下文(基本上是Vuforia ImageTarget示例的修改版本)和overlaySKScene以显示场景中对象的注释. 自从更新到iOS 9以来,不再呈现overlaySKScene.没有调用每帧 *** 作(update：,didEvaluateActions,…). 它适用于iOS 8,同样的SKScene仍然可以在同一个应用程序中的 我正在使用SCNRenderer将场景渲染到现有的OpenGL上下文(基本上是Vuforia ImageTarget示例的修改版本)和overlaySKScene以显示场景中对象的注释.

自从更新到iOS 9以来,不再呈现overlaySKScene.没有调用每帧 *** 作(update：,dIDEvaluateActions,…).

它适用于iOS 8,同样的SKScene仍然可以在同一个应用程序中的不同视图控制器中使用SCNVIEw.

上下文设置：

self.context = [[EAGLContext alloc] initWithAPI:context.API sharegroup:scnVIEwContext.sharegroup];

OpenGL初始化(主要从Vuforia样本复制)：

- (voID)createFramebuffer{    if (self.context) {        // Create default framebuffer object        glGenFramebuffers(1,&_defaultFramebuffer);        glBindFramebuffer(GL_FRAMEBUFFER,self.defaultFramebuffer);        // Create colour renderbuffer and allocate backing store        glGenRenderbuffers(1,&_colorRenderbuffer);        glBindRenderbuffer(GL_RENDERBUFFER,self.colorRenderbuffer);        // Allocate the renderbuffer's storage (shared with the drawable object)        [self.context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer];        Glint framebufferWIDth;        Glint framebufferHeight;        glGetRenderbufferParameteriv(GL_RENDERBUFFER,GL_RENDERBUFFER_WIDTH,&framebufferWIDth);        glGetRenderbufferParameteriv(GL_RENDERBUFFER,GL_RENDERBUFFER_HEIGHT,&framebufferHeight);        // Create the depth render buffer and allocate storage        glGenRenderbuffers(1,&_depthRenderbuffer);        glBindRenderbuffer(GL_RENDERBUFFER,self.depthRenderbuffer);        glrenderbufferStorage(GL_RENDERBUFFER,GL_DEPTH_COMPONENT16,framebufferWIDth,framebufferHeight);        // Attach colour and depth render buffers to the frame buffer        glFramebufferRenderbuffer(GL_FRAMEBUFFER,GL_color_ATTACHMENT0,GL_RENDERBUFFER,self.colorRenderbuffer);        glFramebufferRenderbuffer(GL_FRAMEBUFFER,GL_DEPTH_ATTACHMENT,self.depthRenderbuffer);        glFramebufferRenderbuffer(GL_FRAMEBUFFER,GL_STENCIL_ATTACHMENT,self.stencilRenderbuffer);        // Leave the colour render buffer bound so future rendering operations will act on it        glBindRenderbuffer(GL_RENDERBUFFER,self.colorRenderbuffer);    }}- (voID)setFramebuffer{    // The EAGLContext must be set for each thread that wishes to use it.  Set    // it the first time this method is called (on the render thread)    if (self.context != [EAGLContext currentContext]) {        [EAGLContext setCurrentContext:self.context];    }    if (!self.defaultFramebuffer) {        // Perform on the main thread to ensure safe memory allocation for the        // shared buffer.  Block until the operation is complete to prevent        // simultaneous access to the OpenGL context        [self performSelectorOnMainThread:@selector(createFramebuffer) withObject:self waitUntilDone:YES];    }    glBindFramebuffer(GL_FRAMEBUFFER,self.defaultFramebuffer);}- (BOol)presentFramebuffer{    // setFramebuffer must have been called before presentFramebuffer,therefore    // we kNow the context is valID and has been set for this (render) thread    // Bind the colour render buffer and present it    glBindRenderbuffer(GL_RENDERBUFFER,self.colorRenderbuffer);    return [self.context presentRenderbuffer:GL_RENDERBUFFER];}

SCNRenderer设置：

self.skScene = [[MarkerOverlayScene alloc] initWithSize:CGSizeMake(2048,2048)];self.renderer = [SCNRenderer rendererWithContext:self.context options:nil];self.renderer.autoenablesDefaultlighting = NO;self.renderer.delegate = self;self.renderer.overlaySKScene = self.skScene;self.renderer.playing = YES;if (self.sceneURL) {    self.renderer.scene = [SCNScene sceneWithURL:self.sceneURL options:nil error:nil];    [self.renderer prepareObjects:@[self.renderer.scene] withCompletionHandler:^(BOol success) {    }];}

Vuforia渲染回调：

- (voID)renderFrameQCAR{    [self setFramebuffer];    // Clear colour and depth buffers    glClear(GL_color_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);    // Render vIDeo background and retrIEve tracking state    QCAR::State state = QCAR::Renderer::getInstance().begin();    QCAR::Renderer::getInstance().drawVIDeoBackground();    glEnable(GL_DEPTH_TEST);    glEnable(GL_CulL_FACE);    glCullFace(GL_BACK);    if(QCAR::Renderer::getInstance().getVIDeoBackgroundConfig().mReflection == QCAR::VIDEO_BACKGROUND_REFLECTION_ON) {        glFrontFace(GL_CW);  //Front camera    } else {        glFrontFace(GL_ccw);   //Back camera    }    for (int i = 0; i < state.getNumTrackableResults(); ++i) {        // Get the trackable        const QCAR::TrackableResult* result = state.getTrackableResult(i);        QCAR::Matrix44F modelVIEwMatrix = QCAR::Tool::convertPose2GLMatrix(result->getPose());        SCNMatrix4 matrix = [self convertARMatrix:modelVIEwMatrix];        matrix = SCNMatrix4Mult(SCNMatrix4MakeRotation(M_PI_2,1,0),matrix);        matrix = SCNMatrix4Mult(SCNMatrix4MakeScale(10,10,10),matrix);        self.artransform = matrix;    }    if (state.getNumTrackableResults() == 0) {        self.artransform = SCNMatrix4IDentity;    }    [self.renderer renderAtTime:CFabsoluteTimeGetCurrent() - self.startTime];    gldisable(GL_DEPTH_TEST);    gldisable(GL_CulL_FACE);    QCAR::Renderer::getInstance().end();    [self presentFramebuffer];}

解决方法 与skScene混淆.设置.当我切换到ios9时,没有任何接触通过.我不得不添加skScene.userInteractionEnabled = NO;这在iOS8中是不需要的.我猜默认值已更改或将其设置为叠加层不再更改默认值.

无论如何,问题可能在于skScene设置.

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