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>
49 lines
1.0 KiB
C++
49 lines
1.0 KiB
C++
#include <stdint.h>
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#include "Error.hpp"
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#include "Math.hpp"
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float CalcMSE3( const Bitmap& bmp, const Bitmap& out )
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{
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float err = 0;
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const uint32_t* p1 = bmp.Data();
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const uint32_t* p2 = out.Data();
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size_t cnt = bmp.Size().x * bmp.Size().y;
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for( size_t i=0; i<cnt; i++ )
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{
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uint32_t c1 = *p1++;
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uint32_t c2 = *p2++;
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err += sq( ( c1 & 0x000000FF ) - ( c2 & 0x000000FF ) );
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err += sq( ( ( c1 & 0x0000FF00 ) >> 8 ) - ( ( c2 & 0x0000FF00 ) >> 8 ) );
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err += sq( ( ( c1 & 0x00FF0000 ) >> 16 ) - ( ( c2 & 0x00FF0000 ) >> 16 ) );
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}
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err /= cnt * 3;
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return err;
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}
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float CalcMSE1( const Bitmap& bmp, const Bitmap& out )
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{
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float err = 0;
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const uint32_t* p1 = bmp.Data();
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const uint32_t* p2 = out.Data();
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size_t cnt = bmp.Size().x * bmp.Size().y;
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for( size_t i=0; i<cnt; i++ )
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{
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uint32_t c1 = *p1++;
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uint32_t c2 = *p2++;
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err += sq( ( c1 >> 24 ) - ( c2 & 0xFF ) );
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}
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err /= cnt;
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return err;
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}
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