d840165a32
- `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>
51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
#ifndef __PROCESSCOMMON_HPP__
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#define __PROCESSCOMMON_HPP__
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#include <assert.h>
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#include <stddef.h>
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#include <stdint.h>
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template<class T>
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static size_t GetLeastError( const T* err, size_t num )
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{
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size_t idx = 0;
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for( size_t i=1; i<num; i++ )
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{
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if( err[i] < err[idx] )
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{
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idx = i;
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}
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}
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return idx;
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}
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static uint64_t FixByteOrder( uint64_t d )
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{
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return ( ( d & 0x00000000FFFFFFFF ) ) |
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( ( d & 0xFF00000000000000 ) >> 24 ) |
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( ( d & 0x000000FF00000000 ) << 24 ) |
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( ( d & 0x00FF000000000000 ) >> 8 ) |
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( ( d & 0x0000FF0000000000 ) << 8 );
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}
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template<class T, class S>
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static uint64_t EncodeSelectors( uint64_t d, const T terr[2][8], const S tsel[16][8], const uint32_t* id )
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{
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size_t tidx[2];
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tidx[0] = GetLeastError( terr[0], 8 );
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tidx[1] = GetLeastError( terr[1], 8 );
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d |= tidx[0] << 26;
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d |= tidx[1] << 29;
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for( int i=0; i<16; i++ )
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{
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uint64_t t = tsel[i][tidx[id[i]%2]];
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d |= ( t & 0x1 ) << ( i + 32 );
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d |= ( t & 0x2 ) << ( i + 47 );
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}
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return d;
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}
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#endif
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