Rendering Differences with Play Viewport, Standalone & Packed

Hi,

Here is a screenshot of what I get when I “play in the viewport”:

And here is a screenshot of what I get when I play “standalone” or a “development packed” version:

In the first one, nothing is correct in terms of rendering, shading and post-effect, while in the second one rendering and shading behave as expected as well as post-effects (flare) but I get artifacts on the topology of the planet (or is it in the UV ?).

Any idea where I should look at in order to fix or at least understand why there are these differences ?

The planet is represented by 3 overlapped polygonal spheres slightly larger each one, one shader per layer, ground, clouds and atmosphere.

I have the feeling I am missing something pretty obvious.

Thanks,
.

I got rid of the artifact. The view is set from a Camera, not the playerstart, this is intended to be the main menu screen. By moving the camera 10 cm in Z the artifact disappeared…

That does not explain the difference in shading though.

What would explain this difference between “Play in Selected Viewport”/“Simulate” (first picture) and “Standalone Game”/Packed Game (second picture) ?