Irrlicht Engine

I tried it with QThreads but whatever I do leads always to the same result, either one widget is not drawn, or - and most thread tests have unfortunately this result - even both. I tested also some other cases, making a window and draw one widget there. Then open a second window (child of first) of ...

Yes, this is what I have done. But I discovered another reason of this problem, because this behaviour occurs with the OpenGL driver also with tangent meshes (I had my example on OpenGL for a test). When I switch to DirectX, everything is working...

But when I copy the earth sphere code from the example to my testing app, I got the same effect, an this uses tangent meshes???

Hm, do you know where the problem is located? In the PerPixelLighting example there is a similar scene, where this problem seems not to be present.

Hello, I have a problem with lighting of an object using normal maps. I try to create a planet which got it's light from a star. When I use EMT_SOLID as material type, then everything is fine. I can rotate the planet and it looks as it should be. The picture below shows some following frames capture...

Unitl the getHorizontalAngle() I can follow you. With the Up-vector I have a problem to understand. What do you mean with "The up vector has no part in this calculation"? How can it be a part?

Hello, It seems that I'm currently mathematical disabled a little bit. I have load a 3D object and can show it. Additionally I have 2 vectors (normalized) which defines the rotation of this object. The first vector is the direction of the objects X axis, the second is it's normale vector (matches th...