【iOS】-cocos creator直播SDK接入后会导致openGL报错

[zhaxun]

【当前现象】 1、直播推流接入时，第一次启动授权后，会闪退一次（必现） 2、直播停止时，调用stopPreview会导致opengl报错 _2019-12-24 15:36:20.035934+0800 Live-mobile[3491:1387562] [I][TXLivePush.m, stopPreview, 818]:liteav_api 0x280398410 stopPreview 2019-12-24 15:36:20.178709+0800 Live-mobile[3491:1387562] [I][TXCRenderViewiOS.m, dealloc, 362]:TXCRenderView dealloc:0x107c175e0 OpenGL error 0x0502 in -[CCEAGLView swapBuffers] 406 OpenGL error 0x0500 in -[CCEAGLView swapBuffers] 432

【集成包】 基础版Smart cocos creator2.2

【复现概率】 必现

【复现途径】

1. 调用 startPreview
2. 调用 stopPreview
3. 出现 Bug

【相关附件】 调起方法：mViewController.view为cocos引擎的根视图 CGRect bounds = [[UIScreen mainScreen] bounds]; _pushView = [[CameraPushView alloc] initWithFrame:bounds]; [[mViewController.view viewWithTag:10] addSubview:_pushView]; 提供方法：

• (NSString )startPush:(NSString )param Callback:(NSString *)callback { if(_pushView){ [_pushView startPush]; } return @""; }

• (NSString )pausePush:(NSString )param Callback:(NSString *)callback { if(_pushView){ [_pushView pausePush]; } return @""; }

• (NSString )resumePush:(NSString )param Callback:(NSString *)callback { if(_pushView){ [_pushView resumePush]; } return @""; }

• (NSString )stopPush:(NSString )param Callback:(NSString *)callback { if(_pushView){ [_pushView stopPush]; } return @""; }

• (NSString )stop:(NSString )param Callback:(NSString *)callback { if(_pushView){ [_pushView stopPreview]; // [_pushView removeFromSuperview]; _pushView = nil; } return @""; }

CameraPushView接口（就是将CameraPushViewController修改为UIView）：

请在附件中添加相关视频、日志，截图、操作视频等

[zhaxun]

修改 CCEAGLView-ios.mm文件

• (void) swapBuffers { // IMPORTANT: // - preconditions // -> context MUST be the OpenGL context // -> renderbuffer must be the RENDER BUFFER if([EAGLContext currentContext] != _context){ if(![EAGLContext setCurrentContext:_context]){ NSLog(@"can not set current context"); } } if (_multisampling) { / Resolve from msaaFramebuffer to resolveFramebuffer / //glDisable(GL_SCISSOR_TEST); glBindFramebuffer(GL_READ_FRAMEBUFFER_APPLE, _msaaFramebuffer); glBindFramebuffer(GL_DRAW_FRAMEBUFFER_APPLE, _defaultFramebuffer); glResolveMultisampleFramebufferAPPLE(); }

  CHECK_GL_ERROR();

  if (_discardFramebufferSupported) {
  if (_multisampling) { if (_depthFormat) { GLenum attachments[] = {GL_COLOR_ATTACHMENT0, GL_DEPTH_ATTACHMENT}; glDiscardFramebufferEXT(GL_READ_FRAMEBUFFER_APPLE, 2, attachments); } else { GLenum attachments[] = {GL_COLOR_ATTACHMENT0}; glDiscardFramebufferEXT(GL_READ_FRAMEBUFFER_APPLE, 1, attachments); }

  }
  else if (_depthFormat)
  {
      // not MSAA
      GLenum attachments[] = { GL_DEPTH_ATTACHMENT};
      glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, attachments);
  }
  
  CHECK_GL_ERROR();

  }

  glBindRenderbuffer(GL_RENDERBUFFER, _defaultColorBuffer);

  if(![_context presentRenderbuffer:GL_RENDERBUFFER]) NSLog(@"cocos2d: Failed to swap renderbuffer in %s\n", FUNCTION);

if COCOS2D_DEBUG

CHECK_GL_ERROR();

endif

// We can safely re-bind the framebuffer here, since this will be the
// 1st instruction of the new main loop
if(_multisampling)
    glBindFramebuffer(GL_FRAMEBUFFER, _msaaFramebuffer);

}

[zhaxun]

进入后切回前台时crash的解决办法：

修改AppDelegate.cpp文件 void AppDelegate::applicationDidEnterBackground() { EventDispatcher::dispatchEnterBackgroundEvent(); renderer::BaseRenderer::enterback = 30;//设置进入后台时设置延迟渲染帧数 }

修改RenderFlow.cpp,延迟去渲染！ void RenderFlow::render(NodeProxy* scene, float deltaTime) { // CCLOG("RenderFlow::render: %d deltaTime:%.4f", BaseRenderer::enterback,deltaTime); if(BaseRenderer::enterback > 0){ BaseRenderer::enterback -= 1; return; }