Failed to make complete framebuffer

[fireflyexperience]

Using latest build (ios-v3.1.1) I get the following over and over again - no crashes; it seems to all work, but something's obviously not happy ...

2016-02-22 14:22:11.347 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6  
2016-02-22 14:22:11.361 MapCollectionTest[6560:2635259] Failed to bind EAGLDrawable: <CAEAGLLayer: 0x12c699ca0> to GL_RENDERBUFFER 1  
2016-02-22 14:22:11.361 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6  
2016-02-22 14:22:11.374 MapCollectionTest[6560:2635259] Failed to bind EAGLDrawable: <CAEAGLLayer: 0x12e676490> to GL_RENDERBUFFER 1  
2016-02-22 14:22:11.374 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6  
2016-02-22 14:22:11.387 MapCollectionTest[6560:2635259] Failed to bind EAGLDrawable: <CAEAGLLayer: 0x13194a160> to GL_RENDERBUFFER 1  
2016-02-22 14:22:11.387 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6  
2016-02-22 14:22:11.400 MapCollectionTest[6560:2635259] Failed to bind EAGLDrawable: <CAEAGLLayer: 0x1319c6a20> to GL_RENDERBUFFER 1  
2016-02-22 14:22:11.400 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6
2016-02-22 14:22:11.413 MapCollectionTest[6560:2635259] Failed to bind EAGLDrawable: <CAEAGLLayer: 0x13198d020> to GL_RENDERBUFFER 1
2016-02-22 14:22:11.413 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6  
2016-02-22 14:22:11.427 MapCollectionTest[6560:2635259] Failed to bind EAGLDrawable: <CAEAGLLayer: 0x130cdc6b0> to GL_RENDERBUFFER 1  
2016-02-22 14:22:11.427 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6  
2016-02-22 14:22:11.439 MapCollectionTest[6560:2635259] Failed to bind EAGLDrawable: <CAEAGLLayer: 0x131a34470> to GL_RENDERBUFFER 1  
2016-02-22 14:22:11.440 MapCollectionTest[6560:2635259] Failed to make complete framebuffer object 8cd6 

[1ec5]

Interesting, I don't think I've ever encountered this message before. Is the MGLMapView's opaque property false by any chance?

/cc @kkaefer

[1ec5]

Also, can you indicate the iOS version and device/simulator model you're seeing this message in?

[fireflyexperience]

this is on iOS 9.2.1, iPhone 6
I test explicitly setting opaque = true, but that had no effect.
The specific use case we have has MGLMapViews embedded inside UICollectionViewCells - maybe this is related?

[1ec5]

Ah, it sounds like the map view somehow got initialized with an empty frame (zero width or zero height). #1572 tracks making the map view handle this situation correctly. It’s interesting that you aren’t seeing a crash; perhaps we’re failing more gracefully at the mbgl level now.