Method draw

src/rendering/PAGSurface.cpp:195–237

}

bool PAGSurface::draw(RenderCache* cache, std::shared_ptr<Graphic> graphic,
                      BackendSemaphore* signalSemaphore, bool autoClear) {
  auto context = lockContext();
  if (!context) {
    return false;
  }
  cache->prepareLayers();
  auto surface = drawable->getSurface(context, true);
  if (surface != nullptr && autoClear && contentVersion == cache->getContentVersion()) {
    unlockContext();
    return false;
  }
  if (surface == nullptr) {
    surface = drawable->getSurface(context, false);
  }
  if (surface == nullptr) {
    unlockContext();
    return false;
  }
  contentVersion = cache->getContentVersion();
  cache->attachToContext(context);
  auto canvas = surface->getCanvas();
  if (autoClear) {
    canvas->clear();
  }
  onDraw(graphic, surface, cache);
  if (signalSemaphore == nullptr) {
    context->flush();
  } else {
    tgfx::BackendSemaphore semaphore = {};
    context->flush(&semaphore);
    tgfx::GLSyncInfo signalInfo = {};
    if (semaphore.getGLSync(&signalInfo)) {
      signalSemaphore->initGL(signalInfo.sync);
    }
  }
  cache->detachFromContext();
  context->submit();
  drawable->setTimeStamp(pagPlayer->getTimeStampInternal());
  drawable->present(context);
  unlockContext();
  return true;
}

bool PAGSurface::wait(const BackendSemaphore& waitSemaphore) {
  if (!waitSemaphore.isInitialized()) {