Traduit avec DeepL.com (version gratuite) [English] The effect of light sources in a 3D photo is the result of heavy calculations by the photo renderer. To see that in the 3D view would mean that with every little change the 3D view must be (re-)rendered again, like a photo. You have probably seen how much time it takes to render a photo, you can't have that time delay in the 3D view. With the current speed of computers it's virtually impossible. You would need a computer at least a hundred times faster or one with 100+ processor cores. Even then it will be slow. That is the difference between a video and real-time: a video is a large series of pre-rendered images where real-time has to do the (light) rendering with every change.
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