failed to create framebuffer: 8cd6

humble

Hello people. Just wanted to see if someone has come across this and have a solution. What my project does is I have a view controller with the sparrow view as its view. Then I present another modal view, all good, but sometimes when I remove it (not all times), I get this error:

And the sparrow view rotates 90 degrees, stretches to the new dimensions and becomes unresponsive. However, when this happens presenting the modal view a second time and removing it, all is good again, always.

Dismissing the modal view never works if animation is true but with false it works sometimes.

Not sure what to do here really. I am using sparrow 1.4 I think, possible 1.3.

Thanks

ERik

humble

I am just going to add it as a subview I think. Would have been nice the other way, but. Ah, well.

Thanks

ERik

Daniel

Sorry, I haven't got an idea what could cause that, either. 😐
I'd need to try that with a demo project.

humble

That is ok. Using a subview to present my modal seems to work anyway, and I still have the nice present view animation. Yey. 🙂

I could be wrong but the error seemed to happen mostly if the modal view was heavy on memory, causing a memory warning. I am guessing sparrow maybe does some things there to not crash, like dumping the pool.

I don't know. Thanks anyway Daniel. Keep up the good work.

Thanks

ERik

ronyeh

Hi Daniel & humble,

For the record, I just ran into this problem. It only happens on device, and works fine in iPhone Simulator.

I am also using Sparrow 1.4. 🙈 Sorry I haven't upgraded to Sparrow 2.x yet for Tiny Piano. Don't want to "fix" what's been working great for so long. 🙂

SPView is the main view of my root view controller. I add a heavyweight modal view as a subview of the SPView. (In the past, adding subviews has worked fine. For example, I put the iAd banner as a subview of SPView.)

When I remove the heavyweight modal view, I get

failed to create framebuffer: 8cd6

I dug into SPView.m, and added a NSLog, and realized that mWidth and mHeight of the mRenderbuffer are both 0. Once this error happens, Sparrow cannot recover and it starts spitting out errors like:

2014-04-29 08:47:26.846 Tiny Piano[17277:907] Warning: There was an OpenGL error: #1286
2014-04-29 08:47:26.854 Tiny Piano[17277:907] Warning: There was an OpenGL error: #1282

I feel like I've solved/avoided this in the past... but will investigate further and report on my findings.

ronyeh

I solved/avoided this problem by calling SPView's stop method before showing my heavyweight modal view, and then calling SPView's start method after hiding my modal view.

As long as the Sparrow view is stopped while it's in the background, everything seems to work fine and no OpenGL errors are thrown.