dlaa and the DLSS modes need nvngx_dlss.dll next to totk.exe, which the release does not ship, so most players
never had DLSS. A new setup step after prepare downloads NVIDIA's own copy from the DLSS SDK repository
(github.com/NVIDIA/DLSS, tag v310.9.1, NVIDIA RTX SDK license) and checks its size and SHA-256.
The window has a tick box for it, on by default and named with its source and licence; the CLI takes --dlss. The
step runs on Windows with an NVIDIA RTX GPU (the host check's Vulkan devices), keeps a DLSS library the player
already put there, and on a failed download warns and lets the game run without DLSS; the next setup run tries
again. Texts in English, Russian, Brazilian Portuguese and Simplified Chinese, docs/installer.md step 7, tests in
tests/installer_test.py (DlssTest, with a file: URL).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The setup takes an optional --firmware directory (an unpacked firmware or an emulator's Contents/registered) and, for Chinese, Korean and Traditional Chinese, runs the vendored font extractor into <install>/shared-fonts. Without the folder it warns as before and the install still completes. The fonts step is keyed by the language and a cheap firmware fingerprint; the window gets a folder picker and help text, and the command line takes --firmware.
