如何将 OpenGL 中的东西缩放到实际尺寸？

Question

I am trying to make a program in OpenGL 3.3. Everything is working, but the problem is that everything looks too small. I measured out my field of view in real life and I came to the result of 46.9°. So I applied that to my projection matrix like this:

projection = infinitePerspective(radians(46.9f), float(windowWidth) / float(windowHeight), 0.005f);

but it hasn't helped much.

I made a screenshot for you that shows a one by one by one meter cube that is 3 meters away from the camera:

If I measure out one meter in real life and view it from three meters away it looks way bigger than that. Is there some coefficient needed to scale everything, so that it looks real?

Answer 1

As it turns out, a real scale is impossible. But with the right view angle it looks good.