Method loadImage

core/renderer/TextureCache.cpp:255–299

}

void TextureCache::loadImage()
{
    AsyncStruct* asyncStruct = nullptr;
    while (!_needQuit)
    {
        std::unique_lock<std::mutex> ul(_requestMutex);
        // pop an AsyncStruct from request queue
        if (_requestQueue.empty())
        {
            asyncStruct = nullptr;
        }
        else
        {
            asyncStruct = _requestQueue.front();
            _requestQueue.pop_front();
        }

        if (nullptr == asyncStruct)
        {
            if (_needQuit)
            {
                break;
            }
            _sleepCondition.wait(ul);
            continue;
        }
        ul.unlock();

        // load image
        asyncStruct->loadSuccess = asyncStruct->image.initWithImageFileThreadSafe(asyncStruct->filename);

        // ETC1 ALPHA supports.
        if (asyncStruct->loadSuccess && asyncStruct->image.getFileType() == Image::Format::ETC1 &&
            !s_etc1AlphaFileSuffix.empty())
        {  // check whether alpha texture exists & load it
            auto alphaFile = asyncStruct->filename + s_etc1AlphaFileSuffix;
            if (FileUtils::getInstance()->isFileExist(alphaFile))
                asyncStruct->imageAlpha.initWithImageFileThreadSafe(alphaFile);
        }
        // push the asyncStruct to response queue
        _responseMutex.lock();
        _responseQueue.emplace_back(asyncStruct);
        _responseMutex.unlock();
    }
}

void TextureCache::addImageAsyncCallBack(float /*dt*/)
{