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Won't Fix

Votes

5

Found in

4.1.0f4

Issue ID

533079

Regression

No

[Shadows][Quality] There is 1px white border in Forward+MSAA (because of Screenspace Shadow Collect pass)

Shadows/Lights

-

When using standard MSAA in the Unity quality settings, with forward rendering, I'm getting a 1px white border between my object and its shadow. This is on a Radeon 5850. Changing the shader between diffuse or specular makes no difference, and neither does implementing the specular shader fix which some people have posted on the forums for a similar issue (adding o.Normal = fixed3(0,0,1);). Using no AA, FXAA etc, are all OK and have no issues.

To reproduce:
1 Open attached project
2 Open scene "Scene"
3 Look at the chassis_small object

If using no Anti Aliasing - it works fine.

  1. Resolution Note:

    Scriptable render pipelines are the way forward, and this issue has already been fixed in HDRP and URP. It will not be fixed in Built-in RP.

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Comments (2)

  1. geroppo

    Jan 08, 2017 02:56

    Same issue here, I wish I could post screenshots

  2. chillersanim

    May 16, 2014 11:31

    I think that this error is caused, because the anti aliasing process uses the unshaded background to smooth the edges. Shadows are ignored in this process. Try a scene where a cube is on a red ground and a spotlight. When you now look at the cube, you can see a red line between the cube and the shadow.
    It's a problem with many graphic cards, I use the AMD 7950 HD

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