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Faster horizontal add.

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This commit is contained in:
Bartosz Taudul 2019-07-07 23:27:46 +02:00
parent bde9045af5
commit af1bd3e1fa
1 changed files with 5 additions and 9 deletions
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14
client/TracyDxt1.cpp
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@ -207,11 +207,9 @@ static tracy_force_inline uint64_t ProcessRGB( const uint8_t* src )
__m128i rmax = _mm_max_epu8( max4, max5 ); __m128i rmax = _mm_max_epu8( max4, max5 );
__m128i range1 = _mm_subs_epu8( rmax, rmin ); __m128i range1 = _mm_subs_epu8( rmax, rmin );
__m128i range2 = _mm_maddubs_epi16( range1, _mm_set1_epi8( 1 ) ); __m128i range2 = _mm_sad_epu8( range1, _mm_setzero_si128() );
__m128i range3 = _mm_hadd_epi16( range2, range2 );
__m128i range4 = _mm_add_epi16( range3, _mm_set1_epi16( 1 ) );
uint32_t vrange = _mm_cvtsi128_si32( range4 ) & 0xFFFF; uint32_t vrange = _mm_cvtsi128_si32( range2 ) >> 1;
__m128i range = _mm_set1_epi16( DivTable[vrange] ); __m128i range = _mm_set1_epi16( DivTable[vrange] );
__m128i inset1 = _mm_srli_epi16( range1, 4 ); __m128i inset1 = _mm_srli_epi16( range1, 4 );
@ -462,12 +460,10 @@ static tracy_force_inline void ProcessRGB_AVX( const uint8_t* src, char*& dst )
__m256i rmax = _mm256_max_epu8( max4, max5 ); __m256i rmax = _mm256_max_epu8( max4, max5 );
__m256i range1 = _mm256_subs_epu8( rmax, rmin ); __m256i range1 = _mm256_subs_epu8( rmax, rmin );
__m256i range2 = _mm256_maddubs_epi16( range1, _mm256_set1_epi8( 1 ) ); __m256i range2 = _mm256_sad_epu8( range1, _mm256_setzero_si256() );
__m256i range3 = _mm256_hadd_epi16( range2, range2 );
__m256i range4 = _mm256_add_epi16( range3, _mm256_set1_epi16( 1 ) );
uint16_t vrange0 = DivTableAVX[( _mm256_cvtsi256_si32( range4 ) ) & 0xFFFF]; uint16_t vrange0 = DivTableAVX[_mm256_cvtsi256_si32( range2 ) >> 1];
uint16_t vrange1 = DivTableAVX[_mm256_extract_epi16( range4, 8 )]; uint16_t vrange1 = DivTableAVX[_mm256_extract_epi16( range2, 8 ) >> 1];
__m256i range00 = _mm256_set1_epi16( vrange0 ); __m256i range00 = _mm256_set1_epi16( vrange0 );
__m256i range = _mm256_inserti128_si256( range00, _mm_set1_epi16( vrange1 ), 1 ); __m256i range = _mm256_inserti128_si256( range00, _mm_set1_epi16( vrange1 ), 1 );