"Clear currently tracked shader variant information." has no effect.

[Stevens-R-Miller]

My Project Settings window says “Currently tracked: 42 shaders 103 total variants.” When I click the “Clear” button (whose tooltip says, “Clear currently tracked shader variant information.”), I expect those numbers to change. But they don’t.

I don’t think I have anywhere near that number of shaders/variants in my scene. Can anyone help me understand this?

[Stevens-R-Miller]

Hmmm… It appears to have no effect in 2019.1.7f1, but it does lower the count when I click it in 2017.3.0f3.

A bug?

[Stevens-R-Miller]

Yup, a bug.

@Unity QA

We successfully reproduced this issue, it will be possible to follow the progress on a chosen resolution in our public Issue Tracker, once the report is processed: Unity Issue Tracker - The unused shaders are still being tracked when Asynchronous Shader compilation is enabled

After some investigation, We found out that the source of the issue is Asynchronous Shader compilation. So to fix this issue, you can disable it via Edit → Project Settings → Editor → Asynchronous Shader compilation checkbox. If you need this feature, you can enable it when needed via scripts.

Here is the link to the documentation page: Unity - Manual: Asynchronous shader compilation

We successfully reproduced this issue, it will be possible to follow the progress on a chosen resolution in our public Issue Tracker, once the report is processed: Unity Issue Tracker - The unused shaders are still being tracked when Asynchronous Shader compilation is enabled

After some investigation, We found out that the source of the issue is Asynchronous Shader compilation. So to fix this issue, you can disable it via Edit → Project Settings → Editor → Asynchronous Shader compilation checkbox. If you need this feature, you can enable it when needed via scripts.

Here is the link to the documentation page: Unity - Manual: Asynchronous shader compilation

[greenmonster]

Thank you so much for following up with what you found! Still have this bug in 2019.2.6f1.

[chrismarch_1]

Still broken in 2019.2.15f1. The workaround is to disable async shader compilation in the editor, until the bug linked to in the issue tracker above is resolved.

Unity - Manual: Asynchronous shader compilation

[MikeHergaarden]

It’s still bugged in 2019.3.6f1 but this post saved me quite some frustration: Disabling the async compilation is a valid workaround.