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2021-09-22etcpak: Update to upstream commit 7c3cb6f (Jul 29, 2021)Rémi Verschelde
Adds a new `useHeuristics` compression mode for ETC2. Upstream defaults to enable it so we do the same.
2021-04-13Add `etcpak` library for faster ETC/ETC2/S3TC imports.K. S. Ernest (iFire) Lee
- `etc` module was renamed to `etcpak` and modified to use the new library. - PKM importer is removed in the process, it's obsolete. - Old library `etc2comp` is removed. - S3TC compression no longer done via `squish` (but decompression still is). - Slight modifications to etcpak sources for MinGW compatibility, to fix LLVM `-Wc++11-narrowing` errors, and to allow using vendored or system libpng. Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>