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Fixed in 2017.3.0f3
Votes
1
Found in
5.4.0p1
Issue ID
825017
Regression
No
Objects with instanced shaders handle shadow casting incorrectly once negatively scaled
Repro steps:
1. Open "InstancedShadowCasting" project
2. Load "Scene" scene
3. Observe that objects with instanced shaders once negatively scaled start to handle shadow casting incorrectly.
Note: You can also scale down plane next to (1,-1,1) negatively to see shadow jump next to (1, 1, 1) plane.
User attached a GIF.
Actual behavior: Objects with instanced shaders handle shadow casting incorrectly once negatively scaled, shadows jump to another object.
Expected behavior: Objects with instanced shaders should handle shadow casting correctly, no jumping shadows.
Reproduced on: 5.4.0f3, 5.4.0p1, 5.5.0a6
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bac9-flcl
Oct 16, 2016 15:43
This issue is still present in 5.4.2f1.
bac9-flcl
Sep 13, 2016 12:17
Reproduced in Unity 5.4.1f1.
bac9-flcl
Sep 02, 2016 00:44
Reproduced in Unity 5.4.0p4.
bac9-flcl
Aug 30, 2016 00:44
Also reproduced on Unity 5.4.0p3.
bac9-flcl
Aug 30, 2016 00:43
Shadows do not "jump to another object" at all. The included scene has pairs of planes, and the directional light casts shadows from both: the actual behaviour is that the shadows are being casted from an incorrect side of a mesh once it's negatively scaled.
http://i.imgur.com/OAMQCx1.gif
On this gif, you see the included scene in full. Only the invisible quads, ones facing the sun, not the camera, leave the shadow. The bug allows a sun-facing quad to stop casting the shadow and allows a camera-facing quad to start casting a shadow. That's the gist of it. :)