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Graphics / Thread-Text Bug

« on: August 30, 2012, 10:12:10 pm »

Good evening guys,
I found a bug with sf::Thread and sf::Text. It's a known bug, because I also found some topics about it, but they didn't help me out with my problem. ( http://en.sfml-dev.org/forums/index.php?topic=7730.0 or http://en.sfml-dev.org/forums/index.php?topic=2073.0 )

To the problem:
I made a chat, where the messages are shown in the window. But in nearly every message some letters are missing, or kinda buggy :/  The strange thing is, when I (or someone else) write more messages, the older messages slowly fill up (sometimes immediately): (Some pictures for better illustration) (I come from Austria, so its in german , but you can see it quite good I guess)


I also found out that this happens, when sf::Text is made in a sf::Thread and rendered in the main thread. The text is in a std::list and i have a sf::Thread in one class. I also wrote a simple program that pruduces the bug for me (thats the important part) (writeData is the threadfunction):

void Chat::render()
{
        for(iText=textList.begin(); iText!=textList.end(); ++iText)
                window.draw((*iText));
}

void Chat::writeData()
{
        while(true)
        {
                std::string text;
                std::getline(std::cin, text);
                sf::Text tempText(text);
                tempText.setColor(sf::Color(102, 23, 123));
                tempText.setPosition(0, static_cast<float>(textList.size()*20));
                textList.push_back(tempText);
        }
}

In my chat I use a font called "french grotesque" (http://www.dafont.com/french-grotesque.font)
I also tried out other fonts and the default font, but nothing really helped...
Maybe someone knows how to fix this bug, because it's really annoying, espiacially in a chat
Greetings Geheim!