Unknow Bug under OpenGL windov mode

arras · Post by **arras** » Tue Jul 27, 2004 9:01 pm

Executing this code cause my computer to freeze completly (even Ctrl+Alt+Del is not working).

If I switch to full screen or DirectX mode it's runing just fine. It crashes only under OpenGL windoved mode.

Don't know what might be wrong but it was terifiing me for over couple of weeks untill I found out that it is not code which is wrong.

My stats:
Win XP
ATI Radeon 7000
OpenGL 1.2
compiled under DevC++

Load array of TestSceneNodes:

Code: Select all

#include <irrlicht.h>
using namespace irr;
using namespace core;
using namespace scene;
using namespace video;

int main()
{
	IrrlichtDevice *device =
		createDevice(EDT_OPENGL, dimension2d<s32>(640, 480), 16, false);

	device->setWindowCaption(L"Test");

	video::IVideoDriver* driver = device->getVideoDriver();
	scene::ISceneManager* smgr = device->getSceneManager();

	smgr->addCameraSceneNode(0, vector3df(0,0,30), vector3df(0,0,0));

	ISceneNode *myNode[20];
	for(int i=0; i<20; i++)
	{
	   myNode[i] = smgr->addTestSceneNode(1);
	   myNode[i]->setPosition( vector3df(i*4, 0, 0) );
    }

	while(device->run())
	{
		driver->beginScene(true, true, video::SColor(0,100,100,100));
		smgr->drawAll();
		driver->endScene();
	}
	device->drop();
	return 0;
}

looks like if there are just few nodes in array (1-2) it is running. But if there are more of them it crashes.

mm765 · Post by **mm765** » Tue Jul 27, 2004 10:45 pm

try
ISceneNode myNode[20]; without the asterisk..should help

warui · Post by **warui** » Tue Jul 27, 2004 10:56 pm

@arras:
It works fine for me. I even tried with 200 and 2000 nodes. The only difference is my video card.

@mm765:
It won't help, because what you propose will give diffrent effect.

mm765 · Post by **mm765** » Tue Jul 27, 2004 11:32 pm

you are right, warui.
tested it under linux, works with 2000 testscenenodes without any problem.

gf4ti4200

arras · Post by **arras** » Wed Jul 28, 2004 8:41 am

warui>> thanks mate ...I will try to change videodriver and see what will happen.

niko · Post by **niko** » Sat Jul 31, 2004 8:52 am

If your computer freezes, this is in 99% of all cases the problem of your driver. Not your fault. Update to the latest driver and this could fix your problem.

arras · Post by **arras** » Mon Aug 02, 2004 8:53 pm

Thx niko I'll try that

Ablaze · Post by **Ablaze** » Sat Jan 22, 2005 9:25 pm

I've also been having this problem when using openGL in windowed mode on the tech demos. It will freeze about 40 sec after running the demo.

I have XP with all the latest updates and my computer has literally never frozen like this before. It reminds me of Win95, very disturbing.

I have a Radion 9600XT and a multi-monitor desktop. Perhaps the multi-monitor thing is a contributing factor?

edit: hmm.. now that I go back and look at it in directX, openGL was not rendering the scene correctly. Also, it has the same freexing and rendering problems in fullscreen.

OpenGL (you can't see in the pic but there's no shadow):

DirectX8: