[not a bug] Light + Scale Node + GeForce 7600 GS = ERROR!!!

[Magnet]

I am bue new PC.
I have video card: NVIDIA GeForce 7600 GS.
My project has this code:

Code: Select all

device->getFileSystem()->changeWorkingDirectoryTo("../media/");
	IAnimatedMesh* mesh = smgr->getMesh("waterLily.ms3d");
	IAnimatedMeshSceneNode* node = smgr->addAnimatedMeshSceneNode( mesh );

	if (node)
	{
		node->setMaterialFlag(video::EMF_BACK_FACE_CULLING, false);
		node->setMaterialFlag(EMF_LIGHTING, true);
		//node->setScale(vector3df(0.5,0.5,0.5));
	}

Result:


If I am uncomment this line:

Code: Select all

node->setScale(vector3df(0.5,0.5,0.5));

I am take this result:

If I am set scale > 1 my programm works correctly.


This error does not appear on my second computer.
This computer has NVIDIA GeForce 5200

Also this error does not appear if I disable lighting.

Therefore, my error appear only on the my PC with NVIDIA GeForce 7600 GS,
and if I am create two nodes:
1. lighting node
2. SCALED object with enabled lighting. (And error is appear if scale factor more then one)

[vitek]

You might have a look at the EMF_NORMALIZE_NORMALS material flag.

Travis

[needforhint]

I would also post your problem on NVidia developers forums, or report it to them somehow. It is clearly a matter of the card from the test conclusions. ... and if you solve the problem, by looking at the normalize normals flag for example, tell them you have a solution

[Saturn]

Why? This is clearly what vitek already said and it is perfectly expected behaviour. Unnormalised normals yield undefined results. Cards can react differently. This is not a bug in the driver/irrlicht or GPU.

This is, why normal renormalisation exists in the first place. So one would expect NVidia to know already.