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Fixed

Fixed in 6000.5.0a2, future release

Votes

17

Found in

2021.3.39f1

2022.3.33f1

6000.0.6f1

6000.1.0a7

6000.2.0a1

6000.3.0a1

6000.4.0a1

6000.5.0a1

Issue ID

UUM-73639

Regression

No

Shader errors are logged in WebGL when building a URP project

WebGL

-

How to reproduce:
1. Create a new empty URP project
2. Press File → Build and Run
3. In Player, press “CTRL+SHIFT+J“
4. Observe the browser console

Expected result: No shader errors are logged
Actual result: Shader errors are logged

Reproducible with: 2021.3.39f1, 2022.3.33f1, 6000.0.6f1

Reproducible on: Windows 10, Windows 11 (user’s device)
Not reproducible on: No other environment tested

Error messages:
ERROR: Shader
Hidden/CoreSRP/CoreCopy shader is not supported on this GPU (none of subshaders/fallbacks are suitable)
ERROR: Shader
Hidden/Universal/HDRDebugView shader is not supported on this GPU (none of subshaders/fallbacks are suitable)

Note: Only reproducible in WebGL Player

  1. Resolution Note:

    This is fixed in 6000.5.02, landed and verified.

  2. Resolution Note (fix version future release):

    This is fixed in 6000.5.02, landed and verified.

  3. Resolution Note:

    Postponing U7 ports

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Comments (4)

  1. pichikala

    Nov 08, 2025 16:13

    I’m still seeing this issue in Unity 6000.0.60f1. The shader errors appear when building a URP project for WebGL, and the problem causes players using older 32bit browsers or lower end devices to be unable to run the game. Is there any known workaround or planned fix for this version?

  2. LePaithon

    Oct 09, 2024 20:18

    Happens to me as well. The error disappears if I disable "cast shadows" option when building for WebGL.

  3. KUnit6000

    Sep 28, 2024 18:40

    Can confirm. Broken with Unity 6000.20f1and freezes the browser (Chrome) on Windows 10 with an RTX2080Ti GPU.

    However, the build does work on Android with the Firefox browser.

  4. djonny_d

    Aug 22, 2024 09:51

    Repeats on macOS Sonoma 14.6.1. Here the WebGL player screen is black, the game does not launch on any browser.

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