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Android: concurrency issue with egl_surface EGL_BAD_SURFACE - (bug 4142)

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Occurs when application goes to background:
- Java activity is destroying SurfaceView holder and "egl_surface" (in onNativeSurfaceDestroyed())
- While native thread is in Android_GLES_SwapWindow(), prepared to call SDL_EGL_SwapBuffers()

The error is "call to eglSwapBuffers failed, reporting an error of EGL_BAD_SURFACE"

It an be reproduced easily by adding a SDL_Delay(100) at the begining of SDL_EGL_SwapBuffers(),
and putting the application into background.
This commit is contained in:
Sylvain Becker 2019-01-03 23:22:50 +01:00
parent 2e19343df6
commit ca184ac386
1 changed files with 10 additions and 2 deletions
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12
src/video/android/SDL_androidgl.c
View file

@ -42,14 +42,22 @@ SDL_EGL_MakeCurrent_impl(Android)
int
Android_GLES_SwapWindow(_THIS, SDL_Window * window)
{
int retval;
SDL_LockMutex(Android_ActivityMutex);
/* The following two calls existed in the original Java code
* If you happen to have a device that's affected by their removal,
* please report to Bugzilla. -- Gabriel
*/
/*_this->egl_data->eglWaitNative(EGL_CORE_NATIVE_ENGINE);
_this->egl_data->eglWaitGL();*/
return SDL_EGL_SwapBuffers(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);
retval = SDL_EGL_SwapBuffers(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);
SDL_UnlockMutex(Android_ActivityMutex);
return retval;
}
int