public static void prepareFadeOutTexture(
final AbstractGalleryActivity activity, final GLView rootPane) {
final PreparePageFadeoutTexture task = new PreparePageFadeoutTexture(rootPane);
if (task.isCancelled()) return;
final GLRoot root = activity.getGLRoot();
RawTexture texture = null;
root.unlockRenderThread();
try {
root.addOnGLIdleListener(task);
texture = task.get();
} finally {
root.lockRenderThread();
}
if (texture == null) return;
activity.getTransitionStore().put(KEY_FADE_TEXTURE, texture);
}
public void lockRendering() {
if (mRoot != null) {
mRoot.lockRenderThread();
}
}