diff options
Diffstat (limited to '3rdparty/bimg/3rdparty/etc2/ProcessCommon.hpp')
-rw-r--r-- | 3rdparty/bimg/3rdparty/etc2/ProcessCommon.hpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/3rdparty/bimg/3rdparty/etc2/ProcessCommon.hpp b/3rdparty/bimg/3rdparty/etc2/ProcessCommon.hpp new file mode 100644 index 00000000000..7e6addbcdc2 --- /dev/null +++ b/3rdparty/bimg/3rdparty/etc2/ProcessCommon.hpp @@ -0,0 +1,51 @@ +#ifndef __PROCESSCOMMON_HPP__ +#define __PROCESSCOMMON_HPP__ + +#include <assert.h> +#include <stddef.h> + +#include "Types.hpp" + +template<class T> +static size_t GetLeastError( const T* err, size_t num ) +{ + size_t idx = 0; + for( size_t i=1; i<num; i++ ) + { + if( err[i] < err[idx] ) + { + idx = i; + } + } + return idx; +} + +static uint64 FixByteOrder( uint64 d ) +{ + return ( ( d & 0x00000000FFFFFFFF ) ) | + ( ( d & 0xFF00000000000000 ) >> 24 ) | + ( ( d & 0x000000FF00000000 ) << 24 ) | + ( ( d & 0x00FF000000000000 ) >> 8 ) | + ( ( d & 0x0000FF0000000000 ) << 8 ); +} + +template<class T, class S> +static uint64 EncodeSelectors( uint64 d, const T terr[2][8], const S tsel[16][8], const uint32* id ) +{ + size_t tidx[2]; + tidx[0] = GetLeastError( terr[0], 8 ); + tidx[1] = GetLeastError( terr[1], 8 ); + + d |= tidx[0] << 26; + d |= tidx[1] << 29; + for( int i=0; i<16; i++ ) + { + uint64 t = tsel[i][tidx[id[i]%2]]; + d |= ( t & 0x1 ) << ( i + 32 ); + d |= ( t & 0x2 ) << ( i + 47 ); + } + + return d; +} + +#endif |