Scene sometimes black

[Christi258]

Hi everyone,
I have a problem with a new map, I imported in my game. In some Positions(Rotation) of the camera(FPS) the scene is hole black and if i turn a little right or left everything is normal again.
The map is modelled by blender.
Format: DirectX (.x)
Here you can see how I load the map:

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IMeshSceneNode *node = smgr->addMeshSceneNode(smgr->getMesh("map.x"),0,0,vector3df(0,0,0),vector3df(-90,0,180),vector3df(1000,1000,1000));
node->setMaterialTexture(0,driver->getTexture(L"mtexture.png"));
node->setMaterialFlag(EMF_BACK_FACE_CULLING,0);
node->setMaterialFlag(EMF_LIGHTING,0);
 

[CuteAlien]

Strange, that sounds like your scene is clipped suddenly. For a test you can try to set node->setAutomaticCulling(irr::scene::EAC_OFF);
Although if that works it would be interesting why culling is working wrong in your scene (maybe old Irrlicht version? I remember there had been some problem in the past).

[Christi258]

Thank you that helped,
but I'm using Irrlicht 1.8 sounds like a bug.

[CuteAlien]

Maybe enable debug boundingbox display and check how it looks like for your scene-model:
node->setDebugDataVisible(irr::scene::EDS_BBOX);
That one is used for culling to my knowledge. Did you change the model in some way after loading aside from the code posted above?

[Christi258]

The Bounding box is also not shown.
But, mainly it runs now without Automatic Culling.

[CuteAlien]

Boundingbox not shown might be a hint actually (messed up boundingbox). I wonder if it has to do something with the scaling by factor 1000 (shouldn't, but have to test that and it would explain it).

edit: Tested (3 years later) with other models... couldn't find a bug.

[Mel]

That is a scale issue with no doubt, try using the mesh manipulator to scale your mesh so the scale is always 1,1,1

[zprg]

or try

Code: Select all

node->recalculateBoundingBox();

?