[SOLVED] Invisible triangles in orthographic projection? (Gimbal Lock)

[Kwyrky]

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@willmotil Sorry it’s too dificult for me to understand what you have done exactly. But I think I have found the solution. Hope it helps. The original question was about the difference between the documentation of the D3DXMatrixLookAtRH function and the implementation of this function in MonoGame. I now think that the DirectX documentation is just wrong! The MonoGame implementation is correct. There are two operations needed to transform from WorldSpace to ViewSpace: 1.Given the camera rota…