You are correct about the camera's frame rate - the interval is actually fixed.

Please share any code that you can.

double post ...

Ok, i managed to integrate the two. I did the following:

Read out the camera frame (qcar), created a dynamic texture (ogre3d) used as 2d background (ogre3d).

I noticed that if used in a single thread, you fps will be around 30 fps, which i think is due to the fact that the camera can't record any faster than 30fps.

I probably gonna run the two in separate threads, locking the dynamic texture on each qcar write.

I have the following:

- (void)renderFrameQCAR
{
    if (APPSTATUS_CAMERA_RUNNING == qUtils.appStatus) {
       
        [self setFramebuffer];
       
        Ogre::EAGLES2Context *context = 0;
        ((Ogre::EAGL2Window *)OgreFramework::getSingleton().m_pRenderWnd)->getCustomAttribute("GLCONTEXT", &context);
        if([EAGLContext currentContext] != context->getContext()) {
            context->setCurrent();
        }
       
        if(OgreFramework::getSingletonPtr()->m_pRenderWnd->isActive())
        {
            mStartTime = OgreFramework::getSingletonPtr()->m_pTimer->getMillisecondsCPU();
           
            OgreFramework::getSingletonPtr()->m_pMouse->capture();
           
            OgreFramework::getSingletonPtr()->updateOgre(mLastFrameTime);
           
            OgreFramework::getSingletonPtr()->m_pRoot->renderOneFrame();
           
            mLastFrameTime = OgreFramework::getSingletonPtr()->m_pTimer->getMillisecondsCPU() - mStartTime;
        }
        renderScene();
        [self presentFramebuffer];
    }
}

When i do this, the screen is black. When i remove the following:

renderScene();
        [self presentFramebuffer];

I see the ogre3d scene being rendered. 

Any ideas?

Sorry for late reply.

 in the setFrameBuffer or presentFrameBuffer function?

No. setting context to current needs every frame. And too late on presentFrameBuffer because OGRE uses GL resources before presentFrameBuffer.

I'm not apply any change to OGRE's source code for using vuforia. Setting GL context to current in Ogre::FrameListner::frameStarted or just before calling Ogre::Root::getSingleton().renderOneFrame in your AppDelegate, it may work.

Hi,

I'm also trying to get ogre3d and vuforia integrated with eachother. However I couldn't quite grasp where I need to put the code to set the ogre3d context? Is this done in the setFrameBuffer or presentFrameBuffer function?

And how do i subview the ogre eaglview to this view?

Regards

Hi,

I'm using Vuforia with OGRE too, and I had had a same problem, and solved it.

I gave up to draw VideoBackground for OGRE's framebuffer, I create a independent UIView inherited AR_EAGLView and addSubview it below OGRE's EAGLView.

OGRE never set own GL Context to current since set it once on initializing.
Then I set OGRE's context to current before rendering explicitly on every frame like below:

Ogre::EAGLES2Context *context = 0;
((Ogre::EAGL2Window *)OgreFramework::getSingleton().m_pRenderWnd)->getCustomAttribute("GLCONTEXT", &context);
if([EAGLContext currentContext] != context->getContext()) {
    context->setCurrent();
}

Ogre::Root::getSingleton().renderOneFrame((Ogre::Real)differenceInSeconds);

Hi tripledov,

I'm sorry but we don't have any experience with OGRE - maybe somebody else on the forum does?

It may be faster, with SDK 1.5, to use Background Texture Access to get an image to process. This is available as a texture which can be rendered using a shader to a framebuffer, which you can then access using CVPixelBuffer. You'd need to also render the texture in the main framebuffer in order to see the camera. See the BackgroundTextureAccess sample app for details.

If you have the time and skills you could even write your own image processer as a shader, that runs in the GPU. :-)