-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 David Given wrote: [...] > I have an application that uses EGL. It creates an EGLSurface in the > normal manner, draws on it, etc. Then the user presses the HOME button. > > The EGL spec says this: > >> Following a power management event, calls to eglSwapBuffers, eglCopy- >> Buffers, or eglMakeCurrent will indicate failure by returning EGL FALSE. The >> error EGL CONTEXT LOST will be returned if a power management event has oc- >> curred. >> On detection of this error, the application must destroy all contexts >> (by calling >> eglDestroyContext for each context). To continue rendering the application >> must >> recreate any contexts it requires, and subsequently restore any client API >> state and >> objects it wishes to use. >> Any EGLSurfaces that the application has created need not be destroyed >> following a power management event, but their contents will be invalid. > > I would expect that my app detaching from the screen to be considered > this sort of power management event. > > However, Android doesn't do this. Instead what happens is that it calls > my SurfaceHolder.Callback.surfaceDestroyed() method and then nukes the > surface without telling me. The Android docs say this:
Does anyone know anything about this? This is becoming a very serious issue for us --- Android's support for EGL_CONTEXT_LOST appears to be just plain broken in a lot of places. Specifically, once it's in a dead context state, all operations fail --- including calls to eglCreateContext(), which we need to call to get it working again! Not to mention that eglGetError() always returns EGL_CONTEXT_LOST and never resets to EGL_SUCCESS, which violates the spec. One we get a dead context, how can we get EGL back up and running again? - -- ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ───── http://www.cowlark.com ───── │ │ "Sufficiently advanced incompetence is indistinguishable from │ malice." -- Vernon Schryver -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAksKgggACgkQf9E0noFvlzh4owCffic+r4RZUGwWo/2wjh3Tn6JR bVwAoMSdQkx7fuBm5aEqTElp+FkP26vX =0ZgR -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
