[no bug] strange issue in Irrlicht 1.5

[sp00n]

Irrlicht 1.5
OS - Windows
To reproduce: get the meshViewer example, then comment a string

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// loadModel(StartUpModelFile.c_str());

then add

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smgr->addCubeSceneNode(10,0,-1,core::vector3df(10,10,10));

before

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while(Device->run() && driver)

then to see more add

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driver->draw3DBox(core::aabbox3df(-core::vector3df(30,30,15),core::vector3df(30,30,15)),video::SColor(255,255,255,255));

in the main loop after

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 env->drawAll();

then compile and run.
So when you'll move your camera forward inside a 3dbox in one place you'll see that 3d lines of the box are missed, and strange thing - tris counters are leeser at that moment (for the cube it is 24 tris, but when we got an issue it sets to 12 tris). It happens on Direct3d, OpenGL, Burning's renderers.
May be something worng with calculating WORLD_MATRIX for camera or wrong with update positions?

[Acki]

I think for the 24/12 tris it's because of the culling with the cube...
for the 3dBox, try this:

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driver->setTransform(video::ETS_WORLD, core::matrix4());
driver->draw3DBox(core::aabbox3df(-core::vector3df(30,30,15),core::vector3df(30,30,15)),video::SColor(255,255,255,255));

[yoda]

Acki
I have the same problem and the matter isn't only about culling.

1) This problem remains with more tris.
2) The moment lines disapear you can see that even those lines that should be seen disapear as well.
3) The very same moment something strange happens to scene nodes with EMF_GOURAUD_SHADING turned on - it seems that the texture reflects inside out
4) Pay attention to color of lines - they aren't the same color that in the calls of functions.


And some more:

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driver->setTransform(video::ETS_WORLD, core::matrix4()); 

not working in these cases.

[Sylence]

Solution for 4) IVideoDriver::setMaterial()

[yoda]

Oops. I'm very sorry, but I made a mistake in 3)

It's about EMT_SPHERE_MAP type, not EMF_GOURAUD_SHADING

Sylence
Yes, thanks, that should do.

[bitplane]

No bug here! As per
the docs, unless you set a material and a transformation before drawing the box the result is undefined.