void EngineCore::mainLoop() {
int ident;
int events;
struct android_poll_source* source;
shared_ptr<EngineContext> engineContext(getEngineContext());
app_dummy();
while (true) {
// If not animating, block forever waiting for events.
// otherwise, loop until all events are read, then continue
// to draw the next frame of animation.
while ((ident = ALooper_pollAll(
engineContext->isRendering() ? 0 : -1,
NULL, &events, (void**)&source)) >= 0) {
if (ident == LOOPER_ID_MAIN || ident == LOOPER_ID_INPUT) {
if (source != NULL) {
source->process(mApp, source);
}
}
if (mApp->destroyRequested != 0) {
DEBUG(Log::F_APP_CMD_EVENT, "destroy request received");
return;
}
}
// check needQuit() to give an early chance to stop drawing.
if (engineContext->isRendering() && !engineContext->needQuit()) {
// Drawing is throttled to the screen update rate, so there
// is no need to do timing here.
getEngineContext()->updateDisplay();
}
}
}
void GraphicsEngine::LoadPipeline(const std::string& graphDesc) {
FlushPipelineQueue();
Pipeline pipeline;
pipeline.CreateFromDescription(graphDesc, GraphicsNodeFactory_Singleton::GetInstance());
EngineContext engineContext(1, 1);
for (auto& node : pipeline) {
if (auto graphicsNode = dynamic_cast<GraphicsNode*>(&node)) {
graphicsNode->Initialize(engineContext);
}
}
auto specialNodes = SelectSpecialNodes(pipeline);
m_specialNodes = specialNodes;
m_pipeline = std::move(pipeline);
m_scheduler.SetPipeline(std::move(m_pipeline));
}