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Call to check if a current EGLContext exists in Android

Answer 1

A:

You could try testing it to see if it is null, rather than equal to a given context. This is what I would do in a standard opengl program.

[EDIT] There's an example here which uses it as follows:

if ((eglGetCurrentContext () != context->egl_context) ||
  (eglGetCurrentSurface ( EGL_READ ) != drawable->egl_surface))

I don't know if that's any help.

Amos 2010-06-22 10:28:01

It never returns null sadly. I've debugged it and the EGLContext that Android gives me from eglGetCurrentContext() is actually not current as any operations using it give me the 'No current context set' error.

Moncader 2010-06-22 14:13:44

Is there some sort of error in your initialization process then? When I had a quick look earlier for your problem I found various pieces of example code but nothing with any error checking in it. Maybe you should double check your initialization routines in line with what's in the examples for now and find the error checking stuff later? You could ask on some more Android centric sites too, and keep checking for updates here too. Plus if one of your other avenues pays off make sure to post the solution here to help others find it.

Amos 2010-06-22 16:43:35

I already have a fully working application. However I have some situations where I want to load textures in to memory when Android hasn't set a current GL context (If you don't know android, well, this is just how it works). Obviously, this isn't possible so when I detect that there is no current context, I append that bitmap to a queue to be added to VRAM when the context becomes available again.

Moncader 2010-06-23 01:13:38

So you need to detect the context in order to know what to do with your texture. Is there some form of exception handling you could do to get around this? For instance try to do whatever you need to do with the context, if it fails because the context isn't current catch the exception and deal with it by adding the texture to the end of the queue.

Amos 2010-06-23 06:15:24

I want to avoid doing that as sadly the only way I can get the exception is if I send a command through the GL pipeline, which is slow (relatively speaking).

Moncader 2010-06-25 07:36:57

For your edit, it sadly doesn't work.

Moncader 2010-06-29 08:33:31

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Call to check if a current EGLContext exists in Android

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