Problem with Terrain and Shadows on Windows Phone 8

Unity Engine
1

I’ve submitted a bug for this already (#659136) but I’m wondering if anyone else is running into it or can think of a workaround…

When deploying to a Windows 8.1 Phone device (Lumia 930 in this case), having shadows enabled causes huge dark areas to appear on terrain. For example, below are 2 screenshots from the simple repro project I made for the bug report - one that is “normal” in the editor, and the other that shows the huge dark area when actually running on the Lumia device. It seems that having lightmaps or not has no effect - this simply happens anytime a real-time shadow is cast on a Terrain as far as I can tell. Also seems to be Windows Store App specific, too. Anyone have any experience working around this issue?

Thanks!

1898516--122329--ShadowsBugEditor.png
1898516--122329--ShadowsBugEditor.png626×868 525 KB

On the actual device: a large rectangular “shadow” always near the camera on the terrain:

1898516--122330--ShadowsBugLumia.png
1898516--122330--ShadowsBugLumia.png540×960 635 KB

EDIT: This is on beta 18. FWIW…

2

It’s so lonely working with this platform … sigh. :wink:

1 Like
3

Hi,

this is a driver issue - it happens on any kind of real time shadows. As of today, there is no known workaround. This issue manifests on Lumia x30 phones. The only thing you could do is disable real time shadows and bake them instead. For anything real time, projected shadows workaround could be used, but that will not be as robust as real time shadows. Somebody has blogged about it - you can read more it here:

1 Like
4

That’s sad news, but thanks for the link and the idea for a workaround.