Crash on IrrlichtDevice::run()

[eezstreet]

Hello there! I am a bit new to this community, and I do like the features of this engine. I look forward to using it more in-depth.
I seem to be having an issue with something very simple/basic. My main game loop appears to be crashing on IrrlichtDevice::run() after I hit the exit button on the app (when not in fullscreen) or by hitting alt+f4. I have most of my stuff that involves the IrrlichtDevice and IrrlichtDriver in a class, which has a singleton setup. Quite simply:

Code: Select all

 
// the entry point for any Windows program
int main()
{
    // Setup main game class
    GameClass::GetSingleton();
 
    // Now instantiate the renderer class
    Renderer::GetSingleton();
 
    // enter the main loop:
    MainGameLoop();
 
    // Kill game process
    GentleKillProcess();
    return 0;
}
 

The main loop looks something like this:

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void MainGameLoop()
{
 
    while(Renderer::GetSingleton()->RunDevice() && Renderer::GetSingleton()->GetDriver())
    {
        GameClass::GetSingleton()->RunFrame();
    }
}
 

The RunDevice method of the Renderer class is just "return device->run();" more or less. If it helps, I can also supply the bits of GameClass::RunFrame where the Renderer class gets involved:

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void Renderer::DrawAll(void)
{
    if(device->isWindowActive())
    {
        device->getTimer()->tick();
        driver->beginScene(true, true, SColor(255, 255, 255, 0));
 
        sceneManager->drawAll();
        gui->drawAll();
        driver->endScene();
    }
}
 

I've been receiving crashes in Renderer::RunDevice after I close the game window, and it never reaches GentleKillProcess();. A friend of mine and I were spending quite a bit of time on Teamviewer and couldn't come up with any kind of sensible solution. Could anyone here lend a hand? Thanks!

[hybrid]

I'd say you somewhere drop() the device while still accessing its methods later on. A debugger would probably help to see the state of the device at crash.

[eezstreet]

Hi,
No, the crash occurs before the code has a chance to even reach the device->drop or device->closeDevice. That all occurs in the deconstructor of my Renderer class, and the singleton for it gets destroyed in GentleKillProcess()

Thanks for the reply though.

EDIT: If it helps, it sometimes also crashes at the end of mainCRTStartup.

[polylux]

As hybrid already suggests, don't be scared and use your debugger. It'll track down the issue in no time. With the info you provide there's no way to give better advise.

[eezstreet]

Hello,
I've been debugging for hours and haven't found any useful information. At this point, I'm running the exact same code as the example (with a similar folder structure as well), and I'm about to rip my hair out over this annoying issue. I've stripped my code down to a simple main function:

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#include <irrlicht.h>
//#ifdef _WIN32
//#include <Windows.h>
//#endif
 
using namespace irr;
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;
 
#ifdef _IRR_WINDOWS_
#pragma comment(lib, "Irrlicht.lib")
#pragma comment(linker, "/subsystem:windows /ENTRY:mainCRTStartup")
#endif
 
int main()
{
    IrrlichtDevice *device =
        createDevice( video::EDT_SOFTWARE, dimension2d<u32>(640, 480), 16,
            false, false, false, 0);
 
    if (!device)
        return 1;
 
    device->setWindowCaption(L"Hello World! - Irrlicht Engine Demo");
 
    IVideoDriver* driver = device->getVideoDriver();
    ISceneManager* smgr = device->getSceneManager();
    IGUIEnvironment* guienv = device->getGUIEnvironment();
 
    guienv->addStaticText(L"Hello World! This is the Irrlicht Software renderer!",
        rect<s32>(10,10,260,22), true);
 
    while(device->run())
    {
        driver->beginScene(true, true, SColor(255,100,101,140));
 
        smgr->drawAll();
        guienv->drawAll();
 
        driver->endScene();
    }
    device->drop();
 
    return 0;
}
 

Even the examples, when modified to look exactly the same as this, compile and run just fine, and have no issues. Yet whenever I replicate the same scenario to a T (copying all the project settings in VS one by one so that it's more or less identical to the example), it refuses to close without giving so much as an error.
At this point, I'm half-tempted to just frankenstein the bits I have of my engine into the example and see where that leads me.

[gerdb]

Hi,

you posted some valid code that has nothing todo with your problem!

Why?

You tell you have problems but dont show any code so we cant help, but you annoy us having problems.

Sry but that sucks bigtime.

EDIT: to everyone else: best wishes for the new year and happy coding.

[CuteAlien]

That definitely does not sound like a code problem (above code looks correct). Check the console-log window. Maybe it says for example something about another dll-version which is used than the one you expect it to use.