Switch between OpenGL and Non-OpenGL Views

dipenvasoya · 03-06-2010, 11:07 AM

Hi,

I am new into the iPhone Application Development.
In my application, I need to switch between an OpenGL and Non-OpenGL views frequently.

So, I have put a button on the OpenGL View and added a function to move to the second view.
In the second view, I have one more button with which I return to the first (OpenGL) view.
When this switch happens, the drawing on the OpenGL gets lost..

I verified that the DrawView function gets called correctly but it does not draw the view.
Can somebody tell me a possible problem and the solution for this..??

Thanks,
Dipen

adriumroot · 06-05-2010, 07:40 PM

OpenGL ES views are just UIViews. So you can change between them like anyother view.

One thing though, I recomend you destroy and recreate the framebuffer... arrays and any objects you use before switching back to OpenGL.. Else you will end up with a frame drop of 70% each time you get back into OpenGL.

Also.. If you need to ADDSUBVIEW you need to create it with a frame
If you just push a viewController it gets created via the initWithCoder method.

03-06-2010, 11:07 AM	#1 (permalink)
dipenvasoya Junior Member Join Date: Feb 2010 Posts: 3	Switch between OpenGL and Non-OpenGL Views Hi, I am new into the iPhone Application Development. In my application, I need to switch between an OpenGL and Non-OpenGL views frequently. So, I have put a button on the OpenGL View and added a function to move to the second view. In the second view, I have one more button with which I return to the first (OpenGL) view. When this switch happens, the drawing on the OpenGL gets lost.. I verified that the DrawView function gets called correctly but it does not draw the view. Can somebody tell me a possible problem and the solution for this..?? Thanks, Dipen Last edited by dipenvasoya; 03-08-2010 at 06:02 AM. Reason: Complete Information

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06-05-2010, 07:40 PM	#2 (permalink)
adriumroot Junior Member Join Date: Jun 2010 Posts: 3	OpenGL ES views are just UIViews. So you can change between them like anyother view. One thing though, I recomend you destroy and recreate the framebuffer... arrays and any objects you use before switching back to OpenGL.. Else you will end up with a frame drop of 70% each time you get back into OpenGL. Also.. If you need to ADDSUBVIEW you need to create it with a frame If you just push a viewController it gets created via the initWithCoder method.