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Fixed in Unity 2018.2

Votes

13

Found in

2017.3.0b3

Issue ID

958177

Regression

Yes

RectMask2D stops masking, when it's child has a child with Mask and Image components inside the RectMask2d area

UI

-

-

Priority: 2Necessary for shipping a final release

-

Severity: 3Workaround is possible

It reproduces when UI Object with a "Rect Mask 2D" has a child object (which is not the first child in hierarchy) which also has a Child with Image(script) and Mask(script) components. Also, there must be another UI element on the Canvas, so that object with the "Rect Mask 2D" is not the most bottom child of Canvas.

To reproduce:
1. Open "Test" scene, from "SimplerUiProject.zip"
2. Open Game (or Scene) window and inspect, that RectMask2d is working correctly.
3. In Hierarchy find "Canvas -> RectMask -> Parent_of_Mask" and enable "Parent_of_Mask" object.

Expected result: Enabling this object does not change the way RectMask2d works.
Actual result: RectMask2d is no longer working.

Reproducible: 2017.2.0b6, 2017.2.0f3, 2017.3.0b4, 2018.1.0a1
Not Reproducible: 2017.2.0b5

Workaround:
Make sure Object with RectMask2D is the bottom child in Canvas.

Comments (4)

  1. D8b9e6f77eff9d3f09383570860f9738?d=mm

    BalDev

    Mar 16, 2018 12:35

    BFE_GIO saved us all, this appears to be working:

    Shader.EnableKeyword("UNITY_UI_CLIP_RECT");

  2. B55c31a6949126e513acafe0f8392845?d=mm

    bfe_gio

    Jan 22, 2018 23:40

    Dealing with a similar bug in 2017.2.0p2 (in our case the RectMask2D just randomly clips or doesn't clip various things). A workaround that *seems* to be working for us is to call this at startup somewhere:

    Shader.EnableKeyword("UNITY_UI_CLIP_RECT");

  3. 1e578ff7c407631b8b3a23af0ce4cd6c?d=mm

    URoutine

    Jan 11, 2018 14:53

    Reproduced in 2017.2.0p3

  4. 4f900efb70ed95fb6c2112b0ce022ba4?d=mm

    dron_megatron

    Nov 03, 2017 13:03

    Reproduced in 2017.3.0b7

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