void TilesManager::updateTilesIfContextVerified()
{
EGLContext ctx = eglGetCurrentContext();
GLUtils::checkEglError("contextChanged");
if (ctx != m_eglContext) {
if (m_eglContext != EGL_NO_CONTEXT) {
// A change in EGL context is an unexpected error, but we don't want to
// crash or ANR. Therefore, abandon the Surface Texture and GL resources;
// they'll be recreated later in setupDrawing. (We can't delete them
// since the context is gone)
ALOGE("Unexpected : EGLContext changed! current %x , expected %x",
ctx, m_eglContext);
transferQueue()->resetQueue();
shader()->forceNeedsInit();
videoLayerManager()->forceNeedsInit();
markAllGLTexturesZero();
} else {
// This is the first time we went into this new EGL context.
// We will have the GL resources to be re-inited and we can't update
// dirty tiles yet.
ALOGD("new EGLContext from framework: %x ", ctx);
}
} else {
// Here before we draw, update the Tile which has updated content.
// Inside this function, just do GPU blits from the transfer queue into
// the Tiles' texture.
transferQueue()->updateDirtyTiles();
// Clean up GL textures for video layer.
videoLayerManager()->deleteUnusedTextures();
}
m_eglContext = ctx;
return;
}
// When GL context changed or we get a low memory signal, we want to cleanup all
// the GPU memory webview is using.
// The recreation will be on the next incoming draw call at the drawGL of
// GLWebViewState or the VideoLayerAndroid
void TilesManager::cleanupGLResources()
{
transferQueue()->cleanupGLResourcesAndQueue();
shader()->cleanupGLResources();
videoLayerManager()->cleanupGLResources();
m_eglContext = EGL_NO_CONTEXT;
GLUtils::checkGlError("TilesManager::cleanupGLResources");
}
void TilesManager::unregisterGLWebViewState(GLWebViewState* state)
{
// Discard the whole queue b/c we lost GL context already.
// Note the real updateTexImage will still wait for the next draw.
transferQueue()->discardQueue();
}