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By Design

Votes

6

Found in

2020.3.48f1

2021.3.25f1

2022.2.19f1

2023.1.0b14

2023.2.0a13

Issue ID

UUM-35141

Regression

No

Rendering artifacts when using Depth Mask shader in WebGL

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How to reproduce:
1. Open the attached project "DepthMaskTest.zip"
2. Build And Run the project for WebGL Development Build

Expected results: No rendering artifacts in the WebGL Player
Actual results: Rendering artifacts seen in the WebGL Player

Reproducible with: 2020.3.48f1, 2021.3.25f1, 2022.2.19f1, 2023.1.0b14, 2023.2.0a13
Could not test with: 2023.2.0a14 (the Player hangs in the browser)

Reproducible on: Windows 10

  1. Resolution Note:

    By design: project's use of depth masking depends on strict objects rendering order. In this case the object rendering order is:
    "Capsule","DepthMask",everything else.
    Color buffer values withing the depth masked region are not initialized, because no other object passes ZTest, and the "Capsule" within is filling only a part of the masked area. So the remaining area within depth masked region remains uninitialized, and the values are undefined behaviour depending on GPU/drivers/devices.

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