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Add etcpak library for faster ETC/ETC2/S3TC imports.

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- `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>
This commit is contained in:
K. S. Ernest (iFire) Lee 2021-04-06 22:05:56 -07:00 • committed by Rémi Verschelde
parent b895071895
commit d840165a32
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101 changed files with 9645 additions and 13477 deletions
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11
thirdparty/etcpak/ProcessDxtc.hpp vendored Normal file
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#ifndef __PROCESSDXT1_HPP__
#define __PROCESSDXT1_HPP__
#include <stddef.h>
#include <stdint.h>
void CompressDxt1( const uint32_t* src, uint64_t* dst, uint32_t blocks, size_t width );
void CompressDxt1Dither( const uint32_t* src, uint64_t* dst, uint32_t blocks, size_t width );
void CompressDxt5( const uint32_t* src, uint64_t* dst, uint32_t blocks, size_t width );
#endif