The scene : a simple cube with the front face deleted, and a simple light behind the cube.
The light could be seen inside the cube. It comes through the edges !
How to prevent this ? Thanks a lot !
Emmanuel
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$\begingroup$ Have you tried Cycles rendering engine? $\endgroup$– YashFeb 7, 2019 at 17:27
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$\begingroup$ Yes, it is OK with Cycles. But I want to try eevee ! $\endgroup$– Patrick GUIGNIERFeb 7, 2019 at 18:34
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1 Answer
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Welcome Patrick!
Yes, there are a couple of ways to handle these problems in EEVEE.
Thicker geometry reduces the problem:
Increasing the Shadow Exponent value on the spotlight makes the fade shorter.
Adding contact shadows fills in the fade:
It should however be noted that Contact Shadows are created with the depth map and may create undesired artefacts. This could be handled in a single shot but if you render a sequence it might be harder.
The VSM shadows (In render settings) generates a bit noisier shadow gradient but should be hided with less geometry.
Or if you absolutely need to keep your geometry paper thin you could add a tiny contact shadow.
Here is where you find the settings:
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$\begingroup$ Thank you very much Jackdaw, I tried it successfully !! Do you think this situation will change in the future ? $\endgroup$ Feb 8, 2019 at 13:54
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$\begingroup$ There are other ways that could complement the current solutions. It would be nice to be able to have ray traced shadows and/or baked shadows. I guess that it comes down to how many developers we can found. $\endgroup$– JackdawFeb 8, 2019 at 18:08