Add update=none and shallow=true to extern/FidelityFX-FSR2 and
extern/FidelityFX-SDK in .gitmodules.
The 'Checkout' step runs git submodule update --init --force --depth=1
on all submodules, including the Kelsidavis FSR2/SDK forks, which fails
because it tries to resolve a specific commit SHA via shallow fetch.
The 'Fetch AMD FSR2 SDK' step already rm -rf's and re-clones both
directories from the correct upstream repos, so the submodule checkout
step is redundant and harmful.
update=none causes git submodule update (and actions/checkout submodules:true)
to skip these two entries. Local developers who want the FSR2/SDK must
run the manual fetch step or use 'git submodule update --init <path>'
explicitly.
The .gitignore commit was never pushed to the FSR2 fork, breaking CI
shallow clones. Revert to 3d22aef and add ignore=dirty to .gitmodules
to suppress generated shader header noise.
Both repos were previously untracked clones under extern/ that users had
to fetch manually. Adding them as submodules ensures git pull --recurse
fetches the correct commits with our format-matching patches.
- FidelityFX-FSR2: standalone FSR2 v2.2.1 upscaler (Kelsidavis fork)
- FidelityFX-SDK: full SDK with FSR3 frame generation (Kelsidavis fork)
- Add vk-bootstrap as a git submodule (was in extern/ but not tracked,
causing "vk-bootstrap not found" on all CI jobs)
- Whitelist extern/vk-bootstrap in .gitignore
- Move stormlib to a separate optional install step on both Windows CI
jobs (mingw-w64-x86_64-stormlib doesn't exist in MSYS2 repos)
