Unity Issue Tracker - [iOS] Shaders are recompiled on subsequent builds

By Design

By Design in 2023.1.X

Votes

Found in

Issue ID

Regression

[iOS] Shaders are recompiled on subsequent builds

May 25, 2022

Reproduction steps:
1. Download and open the attached "urp_template.zip" project
2. Build the project for iOS
3. Repeat step 2

Expected result: The shaders are not recompiled on subsequent builds
Actual result: The shaders are recompiled on subsequent builds

Reproducible with: 2019.39f1, 2020.3.34f1, 2021.3.3f1, 2022.1.2f1, 2022.2.0a15

Resolution Note:

The build is not instant, but no actual variant compilation is happening.
Resolution Note (2023.1.X):

The build is not instant, but no actual variant compilation is happening.

Jocke16

Feb 11, 2026 21:41

Also happens if you for example just change the version number and build.
jhughes2112

Sep 07, 2022 23:15

Also happening on Windows PC only builds. Same code / shaders mostly for months, first build will be 1+hours, second build will be 10 minutes. Wait a day or two, first build is 1+hours. I didn't delete anything, AND I am running the UnityAccelerator. So not only is the shader compiler generating something that misses local cache, it misses remote cache as well. Please fix. This is killing productivity for thousands of people.
hineworks

Aug 09, 2022 16:07

Note that this is easily reproducible if you install the glTFast package and add the following shaders to the "Always Included Shaders" list in Project Settings > Graphics:
Packages/glTFast/Runtime/Shader/glTF-pbrMetallicRoughness
Packages/glTFast/Runtime/Shader/glTF-pbrSpecularGlossiness
Packages/glTFast/Runtime/Shader/glTF-unlit
SpockBauru

Aug 03, 2022 21:09

Also happening on android. If you start on windows and build, go to Android and build, and them back to windows, it will recompile everything again. It recompiles every time you switch a platform.