Take a look at the screenshot, the top view looks like if it would be a flying plane instead of a cube resting on the ground. I’m using the sun as light source. [Screenshot 2020-06-29 at 14.18.38] Doing a quick render shows it correctly [Screenshot 2020-06-29 at 14.23.36] incorrect shadow.3dm …

Something is weird here. If I run Zoom Extents, the shadow is recalculated.

Thanks John, you are right that for this particular case running ZoomExtents fix the problem, but I’m still seeing problems with shadows. If I move the sun to get a more long shadow, look what happens. Running ZoomExtents does not fix the problem here. [Screenshot 2020-06-30 at 06.46.20] Of course…

Thanks for reporting, I created a YouTrack item that you can follow: https://mcneel.myjetbrains.com/youtrack/issue/RH-59336 -David

Thanks David for taking a look. Cheers, José

From what I’m seeing here, this is just the adjustment you get due to the self-shadowing issues involved with “Shadow mapping”. In order to make sure that an object does not cast a shadow onto itself, the shadow map (depth buffer) is biased a little towards the camera…the end result is that certain…

Looking at this further, it appears this is a special case that is causing the light frustum calculations to be too tight… If you simply add one more box to the scene, everything looks a lot better. The problem is still related to the self-shadowing adjustments I mentioned, but those adjustments are…

Here’s an example where self-shadowing adjustments still have unwanted results… There’s another box off to the left in the distance… and this image shows the result using Rendered mode default settings… [image] If I delete the box (that you can’t see), then the shadows all line up… However, if I …

I just realized that Mac Rhino is what is being used here…and the results are somewhat different… The soft shadow adjustments are causing their own set of problems and just adding to the self-shadowing problem…But I can still get better results by changing/tweaking the Shadows settings… Note: This …

Hi Jeff, Thanks a lot for taking the time to give me such an in-depth explanation of the issues, I really appreciate it. [image] jeff: I think it’s a pretty unfair comparison to attempt to compare a raytraced result with a capture of Rhino’s rendered viewport…Do you really expect real-time res…

Incorrect top view shadows

Serengeti (Rhino WIP) Mac

brian (Brian Gillespie) July 8, 2020, 12:47am 11

RH-59336 is fixed in the latest WIP

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Incorrect top view shadows

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