[SOLVED] OGRE + Vuforia QCAR + Android = black background

Discussion of issues specific to mobile platforms such as iOS, Android, Symbian and Meego.
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roman_s
Gnoblar
Posts: 2
Joined: Sun Jul 28, 2013 2:28 pm

[SOLVED] OGRE + Vuforia QCAR + Android = black background

Post by roman_s » Thu Dec 12, 2013 8:40 pm

Hello everybody,

I have android app with augmented reality by vuforia.
But:
GalaxyTab P7510 CyanogenMod 10.2 = Android 4.3.1 - camera is on background - works - see attachment 1
GalaxyS3 I9300 - stock Android 4.1.2 - shows black background :/ - see attachement 2

I have RelativeLayout with addView(), one GLSurfaceView as background, second SurfaceView with Ogre.
When I remove mRoot->renderOneFrame(), then I see camera, but not Ogre, of course.

Ogre v1-9 branch, commit Sun Sep 15 12:08:53 2013 +0300 Code cleanup
NDK r8e
Built on Linux

Here is some code:

Ogre SurfaceView rendering:

Code: Select all

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);

try {
    mRenderWnd->windowMovedOrResized();
    mRoot->renderOneFrame();
}
catch(Ogre::RenderingAPIException ex) {
}

glDisable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
Vuforia GLSurfaceView rendering:

Code: Select all

QCAR::State state = QCAR::Renderer::getInstance().begin();

QCAR::Renderer::getInstance().drawVideoBackground();

QCAR::Renderer::getInstance().end();
Viewport:

Code: Select all

viewport->setClearEveryFrame(true, Ogre::FBT_DEPTH|Ogre::FBT_STENCIL);
Some Java stuff:

Code: Select all

mGlView = new ARGLSurfaceView(this);
mGlView.init(mQCARFlags, translucent, depthSize, stencilSize);
mGlView.setRenderer(mGlView);
mGlView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);

mSurfaceView = new OgreSurfaceView(this);
mSurfaceView.setVisibility(View.INVISIBLE);
mMainLayout.addView(mSurfaceView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

mLoadingIndicator.bringToFront();

mSurfaceView.setVisibility(View.VISIBLE);

// then ...

mGlView.mIsActive = true;
mMainLayout.addView(mGlView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

mGlView.setVisibility(View.VISIBLE);

// then ...

QCARJNI.startCamera();

// the both Views has:

holder.setFormat(PixelFormat.TRANSLUCENT);
Thanks for any help or ideas.

Roman

[UPDATE] Test GalaxyTab 10.2 stock Android 4.2 - the same black background

[SOLVED]
Okay, I have moved QCAR rendering stuff from QCAR GLSurfaceView to OGRE's SurfaceView. First QCAR begin and drawVideo, then render OGRE and QCAR end.

And everything works!!!

Thanks to OGRE!!!
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android88
Gnoblar
Posts: 2
Joined: Thu Jun 11, 2015 3:59 am

Re: [SOLVED] OGRE + Vuforia QCAR + Android = black backgroun

Post by android88 » Thu Jun 11, 2015 4:07 am

Hello, I am also integrated qcar + ogre, and your problem, I still can not be content ogre superimposed on the camera content qcar, my code is as follows:

Code: Select all


    m_pViewport->setClearEveryFrame(true, Ogre::FBT_DEPTH | Ogre::FBT_STENCIL);

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    QCAR::State state = QCAR::Renderer::getInstance().begin();
    QCAR::Renderer::getInstance().drawVideoBackground();

    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glEnable(GL_DEPTH_TEST);
    glEnable(GL_CULL_FACE);

    if (QCAR::Renderer::getInstance().getVideoBackgroundConfig().mReflection == QCAR::VIDEO_BACKGROUND_REFLECTION_ON) {
        glFrontFace(GL_CW); //Front camera
    }
    else {
        glFrontFace(GL_CCW); //Back camera
    }

    m_pRoot->renderOneFrame();
    m_pRenderWnd->update();
    
    glDisable(GL_BLEND);
    glDisable(GL_DEPTH_TEST);
    glDisable(GL_CULL_FACE);

    QCAR::Renderer::getInstance().end();

    m_pRenderWnd->swapBuffers();

I hope you can provide some portion of your qcar + ogre rendering code, thank you very much!
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