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Diffstat (limited to 'thirdparty/squish')
24 files changed, 4472 insertions, 0 deletions
diff --git a/thirdparty/squish/alpha.cpp b/thirdparty/squish/alpha.cpp new file mode 100644 index 0000000000..2292081e7a --- /dev/null +++ b/thirdparty/squish/alpha.cpp @@ -0,0 +1,349 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include "alpha.h" +#include <climits> +#include <algorithm> + +namespace squish { + +static int FloatToInt( float a, int limit ) +{ + // use ANSI round-to-zero behaviour to get round-to-nearest + int i = ( int )( a + 0.5f ); + + // clamp to the limit + if( i < 0 ) + i = 0; + else if( i > limit ) + i = limit; + + // done + return i; +} + +void CompressAlphaDxt3( u8 const* rgba, int mask, void* block ) +{ + u8* bytes = reinterpret_cast< u8* >( block ); + + // quantise and pack the alpha values pairwise + for( int i = 0; i < 8; ++i ) + { + // quantise down to 4 bits + float alpha1 = ( float )rgba[8*i + 3] * ( 15.0f/255.0f ); + float alpha2 = ( float )rgba[8*i + 7] * ( 15.0f/255.0f ); + int quant1 = FloatToInt( alpha1, 15 ); + int quant2 = FloatToInt( alpha2, 15 ); + + // set alpha to zero where masked + int bit1 = 1 << ( 2*i ); + int bit2 = 1 << ( 2*i + 1 ); + if( ( mask & bit1 ) == 0 ) + quant1 = 0; + if( ( mask & bit2 ) == 0 ) + quant2 = 0; + + // pack into the byte + bytes[i] = ( u8 )( quant1 | ( quant2 << 4 ) ); + } +} + +void DecompressAlphaDxt3( u8* rgba, void const* block ) +{ + u8 const* bytes = reinterpret_cast< u8 const* >( block ); + + // unpack the alpha values pairwise + for( int i = 0; i < 8; ++i ) + { + // quantise down to 4 bits + u8 quant = bytes[i]; + + // unpack the values + u8 lo = quant & 0x0f; + u8 hi = quant & 0xf0; + + // convert back up to bytes + rgba[8*i + 3] = lo | ( lo << 4 ); + rgba[8*i + 7] = hi | ( hi >> 4 ); + } +} + +static void FixRange( int& min, int& max, int steps ) +{ + if( max - min < steps ) + max = std::min( min + steps, 255 ); + if( max - min < steps ) + min = std::max( 0, max - steps ); +} + +static int FitCodes( u8 const* rgba, int mask, u8 const* codes, u8* indices ) +{ + // fit each alpha value to the codebook + int err = 0; + for( int i = 0; i < 16; ++i ) + { + // check this pixel is valid + int bit = 1 << i; + if( ( mask & bit ) == 0 ) + { + // use the first code + indices[i] = 0; + continue; + } + + // find the least error and corresponding index + int value = rgba[4*i + 3]; + int least = INT_MAX; + int index = 0; + for( int j = 0; j < 8; ++j ) + { + // get the squared error from this code + int dist = ( int )value - ( int )codes[j]; + dist *= dist; + + // compare with the best so far + if( dist < least ) + { + least = dist; + index = j; + } + } + + // save this index and accumulate the error + indices[i] = ( u8 )index; + err += least; + } + + // return the total error + return err; +} + +static void WriteAlphaBlock( int alpha0, int alpha1, u8 const* indices, void* block ) +{ + u8* bytes = reinterpret_cast< u8* >( block ); + + // write the first two bytes + bytes[0] = ( u8 )alpha0; + bytes[1] = ( u8 )alpha1; + + // pack the indices with 3 bits each + u8* dest = bytes + 2; + u8 const* src = indices; + for( int i = 0; i < 2; ++i ) + { + // pack 8 3-bit values + int value = 0; + for( int j = 0; j < 8; ++j ) + { + int index = *src++; + value |= ( index << 3*j ); + } + + // store in 3 bytes + for( int j = 0; j < 3; ++j ) + { + int byte = ( value >> 8*j ) & 0xff; + *dest++ = ( u8 )byte; + } + } +} + +static void WriteAlphaBlock5( int alpha0, int alpha1, u8 const* indices, void* block ) +{ + // check the relative values of the endpoints + if( alpha0 > alpha1 ) + { + // swap the indices + u8 swapped[16]; + for( int i = 0; i < 16; ++i ) + { + u8 index = indices[i]; + if( index == 0 ) + swapped[i] = 1; + else if( index == 1 ) + swapped[i] = 0; + else if( index <= 5 ) + swapped[i] = 7 - index; + else + swapped[i] = index; + } + + // write the block + WriteAlphaBlock( alpha1, alpha0, swapped, block ); + } + else + { + // write the block + WriteAlphaBlock( alpha0, alpha1, indices, block ); + } +} + +static void WriteAlphaBlock7( int alpha0, int alpha1, u8 const* indices, void* block ) +{ + // check the relative values of the endpoints + if( alpha0 < alpha1 ) + { + // swap the indices + u8 swapped[16]; + for( int i = 0; i < 16; ++i ) + { + u8 index = indices[i]; + if( index == 0 ) + swapped[i] = 1; + else if( index == 1 ) + swapped[i] = 0; + else + swapped[i] = 9 - index; + } + + // write the block + WriteAlphaBlock( alpha1, alpha0, swapped, block ); + } + else + { + // write the block + WriteAlphaBlock( alpha0, alpha1, indices, block ); + } +} + +void CompressAlphaDxt5( u8 const* rgba, int mask, void* block ) +{ + // get the range for 5-alpha and 7-alpha interpolation + int min5 = 255; + int max5 = 0; + int min7 = 255; + int max7 = 0; + for( int i = 0; i < 16; ++i ) + { + // check this pixel is valid + int bit = 1 << i; + if( ( mask & bit ) == 0 ) + continue; + + // incorporate into the min/max + int value = rgba[4*i + 3]; + if( value < min7 ) + min7 = value; + if( value > max7 ) + max7 = value; + if( value != 0 && value < min5 ) + min5 = value; + if( value != 255 && value > max5 ) + max5 = value; + } + + // handle the case that no valid range was found + if( min5 > max5 ) + min5 = max5; + if( min7 > max7 ) + min7 = max7; + + // fix the range to be the minimum in each case + FixRange( min5, max5, 5 ); + FixRange( min7, max7, 7 ); + + // set up the 5-alpha code book + u8 codes5[8]; + codes5[0] = ( u8 )min5; + codes5[1] = ( u8 )max5; + for( int i = 1; i < 5; ++i ) + codes5[1 + i] = ( u8 )( ( ( 5 - i )*min5 + i*max5 )/5 ); + codes5[6] = 0; + codes5[7] = 255; + + // set up the 7-alpha code book + u8 codes7[8]; + codes7[0] = ( u8 )min7; + codes7[1] = ( u8 )max7; + for( int i = 1; i < 7; ++i ) + codes7[1 + i] = ( u8 )( ( ( 7 - i )*min7 + i*max7 )/7 ); + + // fit the data to both code books + u8 indices5[16]; + u8 indices7[16]; + int err5 = FitCodes( rgba, mask, codes5, indices5 ); + int err7 = FitCodes( rgba, mask, codes7, indices7 ); + + // save the block with least error + if( err5 <= err7 ) + WriteAlphaBlock5( min5, max5, indices5, block ); + else + WriteAlphaBlock7( min7, max7, indices7, block ); +} + +void DecompressAlphaDxt5( u8* rgba, void const* block ) +{ + // get the two alpha values + u8 const* bytes = reinterpret_cast< u8 const* >( block ); + int alpha0 = bytes[0]; + int alpha1 = bytes[1]; + + // compare the values to build the codebook + u8 codes[8]; + codes[0] = ( u8 )alpha0; + codes[1] = ( u8 )alpha1; + if( alpha0 <= alpha1 ) + { + // use 5-alpha codebook + for( int i = 1; i < 5; ++i ) + codes[1 + i] = ( u8 )( ( ( 5 - i )*alpha0 + i*alpha1 )/5 ); + codes[6] = 0; + codes[7] = 255; + } + else + { + // use 7-alpha codebook + for( int i = 1; i < 7; ++i ) + codes[1 + i] = ( u8 )( ( ( 7 - i )*alpha0 + i*alpha1 )/7 ); + } + + // decode the indices + u8 indices[16]; + u8 const* src = bytes + 2; + u8* dest = indices; + for( int i = 0; i < 2; ++i ) + { + // grab 3 bytes + int value = 0; + for( int j = 0; j < 3; ++j ) + { + int byte = *src++; + value |= ( byte << 8*j ); + } + + // unpack 8 3-bit values from it + for( int j = 0; j < 8; ++j ) + { + int index = ( value >> 3*j ) & 0x7; + *dest++ = ( u8 )index; + } + } + + // write out the indexed codebook values + for( int i = 0; i < 16; ++i ) + rgba[4*i + 3] = codes[indices[i]]; +} + +} // namespace squish diff --git a/thirdparty/squish/alpha.h b/thirdparty/squish/alpha.h new file mode 100644 index 0000000000..5736052551 --- /dev/null +++ b/thirdparty/squish/alpha.h @@ -0,0 +1,41 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_ALPHA_H +#define SQUISH_ALPHA_H + +#include <squish.h> + +namespace squish { + +void CompressAlphaDxt3( u8 const* rgba, int mask, void* block ); +void CompressAlphaDxt5( u8 const* rgba, int mask, void* block ); + +void DecompressAlphaDxt3( u8* rgba, void const* block ); +void DecompressAlphaDxt5( u8* rgba, void const* block ); + +} // namespace squish + +#endif // ndef SQUISH_ALPHA_H diff --git a/thirdparty/squish/clusterfit.cpp b/thirdparty/squish/clusterfit.cpp new file mode 100644 index 0000000000..afea84880c --- /dev/null +++ b/thirdparty/squish/clusterfit.cpp @@ -0,0 +1,393 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + Copyright (c) 2007 Ignacio Castano icastano@nvidia.com + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include "clusterfit.h" +#include "colourset.h" +#include "colourblock.h" +#include <cfloat> + +namespace squish { + +ClusterFit::ClusterFit( ColourSet const* colours, int flags ) + : ColourFit( colours, flags ) +{ + // set the iteration count + m_iterationCount = ( m_flags & kColourIterativeClusterFit ) ? kMaxIterations : 1; + + // initialise the best error + m_besterror = VEC4_CONST( FLT_MAX ); + + // initialise the metric + bool perceptual = ( ( m_flags & kColourMetricPerceptual ) != 0 ); + if( perceptual ) + m_metric = Vec4( 0.2126f, 0.7152f, 0.0722f, 0.0f ); + else + m_metric = VEC4_CONST( 1.0f ); + + // cache some values + int const count = m_colours->GetCount(); + Vec3 const* values = m_colours->GetPoints(); + + // get the covariance matrix + Sym3x3 covariance = ComputeWeightedCovariance( count, values, m_colours->GetWeights() ); + + // compute the principle component + m_principle = ComputePrincipleComponent( covariance ); +} + +bool ClusterFit::ConstructOrdering( Vec3 const& axis, int iteration ) +{ + // cache some values + int const count = m_colours->GetCount(); + Vec3 const* values = m_colours->GetPoints(); + + // build the list of dot products + float dps[16]; + u8* order = ( u8* )m_order + 16*iteration; + for( int i = 0; i < count; ++i ) + { + dps[i] = Dot( values[i], axis ); + order[i] = ( u8 )i; + } + + // stable sort using them + for( int i = 0; i < count; ++i ) + { + for( int j = i; j > 0 && dps[j] < dps[j - 1]; --j ) + { + std::swap( dps[j], dps[j - 1] ); + std::swap( order[j], order[j - 1] ); + } + } + + // check this ordering is unique + for( int it = 0; it < iteration; ++it ) + { + u8 const* prev = ( u8* )m_order + 16*it; + bool same = true; + for( int i = 0; i < count; ++i ) + { + if( order[i] != prev[i] ) + { + same = false; + break; + } + } + if( same ) + return false; + } + + // copy the ordering and weight all the points + Vec3 const* unweighted = m_colours->GetPoints(); + float const* weights = m_colours->GetWeights(); + m_xsum_wsum = VEC4_CONST( 0.0f ); + for( int i = 0; i < count; ++i ) + { + int j = order[i]; + Vec4 p( unweighted[j].X(), unweighted[j].Y(), unweighted[j].Z(), 1.0f ); + Vec4 w( weights[j] ); + Vec4 x = p*w; + m_points_weights[i] = x; + m_xsum_wsum += x; + } + return true; +} + +void ClusterFit::Compress3( void* block ) +{ + // declare variables + int const count = m_colours->GetCount(); + Vec4 const two = VEC4_CONST( 2.0 ); + Vec4 const one = VEC4_CONST( 1.0f ); + Vec4 const half_half2( 0.5f, 0.5f, 0.5f, 0.25f ); + Vec4 const zero = VEC4_CONST( 0.0f ); + Vec4 const half = VEC4_CONST( 0.5f ); + Vec4 const grid( 31.0f, 63.0f, 31.0f, 0.0f ); + Vec4 const gridrcp( 1.0f/31.0f, 1.0f/63.0f, 1.0f/31.0f, 0.0f ); + + // prepare an ordering using the principle axis + ConstructOrdering( m_principle, 0 ); + + // check all possible clusters and iterate on the total order + Vec4 beststart = VEC4_CONST( 0.0f ); + Vec4 bestend = VEC4_CONST( 0.0f ); + Vec4 besterror = m_besterror; + u8 bestindices[16]; + int bestiteration = 0; + int besti = 0, bestj = 0; + + // loop over iterations (we avoid the case that all points in first or last cluster) + for( int iterationIndex = 0;; ) + { + // first cluster [0,i) is at the start + Vec4 part0 = VEC4_CONST( 0.0f ); + for( int i = 0; i < count; ++i ) + { + // second cluster [i,j) is half along + Vec4 part1 = ( i == 0 ) ? m_points_weights[0] : VEC4_CONST( 0.0f ); + int jmin = ( i == 0 ) ? 1 : i; + for( int j = jmin;; ) + { + // last cluster [j,count) is at the end + Vec4 part2 = m_xsum_wsum - part1 - part0; + + // compute least squares terms directly + Vec4 alphax_sum = MultiplyAdd( part1, half_half2, part0 ); + Vec4 alpha2_sum = alphax_sum.SplatW(); + + Vec4 betax_sum = MultiplyAdd( part1, half_half2, part2 ); + Vec4 beta2_sum = betax_sum.SplatW(); + + Vec4 alphabeta_sum = ( part1*half_half2 ).SplatW(); + + // compute the least-squares optimal points + Vec4 factor = Reciprocal( NegativeMultiplySubtract( alphabeta_sum, alphabeta_sum, alpha2_sum*beta2_sum ) ); + Vec4 a = NegativeMultiplySubtract( betax_sum, alphabeta_sum, alphax_sum*beta2_sum )*factor; + Vec4 b = NegativeMultiplySubtract( alphax_sum, alphabeta_sum, betax_sum*alpha2_sum )*factor; + + // clamp to the grid + a = Min( one, Max( zero, a ) ); + b = Min( one, Max( zero, b ) ); + a = Truncate( MultiplyAdd( grid, a, half ) )*gridrcp; + b = Truncate( MultiplyAdd( grid, b, half ) )*gridrcp; + + // compute the error (we skip the constant xxsum) + Vec4 e1 = MultiplyAdd( a*a, alpha2_sum, b*b*beta2_sum ); + Vec4 e2 = NegativeMultiplySubtract( a, alphax_sum, a*b*alphabeta_sum ); + Vec4 e3 = NegativeMultiplySubtract( b, betax_sum, e2 ); + Vec4 e4 = MultiplyAdd( two, e3, e1 ); + + // apply the metric to the error term + Vec4 e5 = e4*m_metric; + Vec4 error = e5.SplatX() + e5.SplatY() + e5.SplatZ(); + + // keep the solution if it wins + if( CompareAnyLessThan( error, besterror ) ) + { + beststart = a; + bestend = b; + besti = i; + bestj = j; + besterror = error; + bestiteration = iterationIndex; + } + + // advance + if( j == count ) + break; + part1 += m_points_weights[j]; + ++j; + } + + // advance + part0 += m_points_weights[i]; + } + + // stop if we didn't improve in this iteration + if( bestiteration != iterationIndex ) + break; + + // advance if possible + ++iterationIndex; + if( iterationIndex == m_iterationCount ) + break; + + // stop if a new iteration is an ordering that has already been tried + Vec3 axis = ( bestend - beststart ).GetVec3(); + if( !ConstructOrdering( axis, iterationIndex ) ) + break; + } + + // save the block if necessary + if( CompareAnyLessThan( besterror, m_besterror ) ) + { + // remap the indices + u8 const* order = ( u8* )m_order + 16*bestiteration; + + u8 unordered[16]; + for( int m = 0; m < besti; ++m ) + unordered[order[m]] = 0; + for( int m = besti; m < bestj; ++m ) + unordered[order[m]] = 2; + for( int m = bestj; m < count; ++m ) + unordered[order[m]] = 1; + + m_colours->RemapIndices( unordered, bestindices ); + + // save the block + WriteColourBlock3( beststart.GetVec3(), bestend.GetVec3(), bestindices, block ); + + // save the error + m_besterror = besterror; + } +} + +void ClusterFit::Compress4( void* block ) +{ + // declare variables + int const count = m_colours->GetCount(); + Vec4 const two = VEC4_CONST( 2.0f ); + Vec4 const one = VEC4_CONST( 1.0f ); + Vec4 const onethird_onethird2( 1.0f/3.0f, 1.0f/3.0f, 1.0f/3.0f, 1.0f/9.0f ); + Vec4 const twothirds_twothirds2( 2.0f/3.0f, 2.0f/3.0f, 2.0f/3.0f, 4.0f/9.0f ); + Vec4 const twonineths = VEC4_CONST( 2.0f/9.0f ); + Vec4 const zero = VEC4_CONST( 0.0f ); + Vec4 const half = VEC4_CONST( 0.5f ); + Vec4 const grid( 31.0f, 63.0f, 31.0f, 0.0f ); + Vec4 const gridrcp( 1.0f/31.0f, 1.0f/63.0f, 1.0f/31.0f, 0.0f ); + + // prepare an ordering using the principle axis + ConstructOrdering( m_principle, 0 ); + + // check all possible clusters and iterate on the total order + Vec4 beststart = VEC4_CONST( 0.0f ); + Vec4 bestend = VEC4_CONST( 0.0f ); + Vec4 besterror = m_besterror; + u8 bestindices[16]; + int bestiteration = 0; + int besti = 0, bestj = 0, bestk = 0; + + // loop over iterations (we avoid the case that all points in first or last cluster) + for( int iterationIndex = 0;; ) + { + // first cluster [0,i) is at the start + Vec4 part0 = VEC4_CONST( 0.0f ); + for( int i = 0; i < count; ++i ) + { + // second cluster [i,j) is one third along + Vec4 part1 = VEC4_CONST( 0.0f ); + for( int j = i;; ) + { + // third cluster [j,k) is two thirds along + Vec4 part2 = ( j == 0 ) ? m_points_weights[0] : VEC4_CONST( 0.0f ); + int kmin = ( j == 0 ) ? 1 : j; + for( int k = kmin;; ) + { + // last cluster [k,count) is at the end + Vec4 part3 = m_xsum_wsum - part2 - part1 - part0; + + // compute least squares terms directly + Vec4 const alphax_sum = MultiplyAdd( part2, onethird_onethird2, MultiplyAdd( part1, twothirds_twothirds2, part0 ) ); + Vec4 const alpha2_sum = alphax_sum.SplatW(); + + Vec4 const betax_sum = MultiplyAdd( part1, onethird_onethird2, MultiplyAdd( part2, twothirds_twothirds2, part3 ) ); + Vec4 const beta2_sum = betax_sum.SplatW(); + + Vec4 const alphabeta_sum = twonineths*( part1 + part2 ).SplatW(); + + // compute the least-squares optimal points + Vec4 factor = Reciprocal( NegativeMultiplySubtract( alphabeta_sum, alphabeta_sum, alpha2_sum*beta2_sum ) ); + Vec4 a = NegativeMultiplySubtract( betax_sum, alphabeta_sum, alphax_sum*beta2_sum )*factor; + Vec4 b = NegativeMultiplySubtract( alphax_sum, alphabeta_sum, betax_sum*alpha2_sum )*factor; + + // clamp to the grid + a = Min( one, Max( zero, a ) ); + b = Min( one, Max( zero, b ) ); + a = Truncate( MultiplyAdd( grid, a, half ) )*gridrcp; + b = Truncate( MultiplyAdd( grid, b, half ) )*gridrcp; + + // compute the error (we skip the constant xxsum) + Vec4 e1 = MultiplyAdd( a*a, alpha2_sum, b*b*beta2_sum ); + Vec4 e2 = NegativeMultiplySubtract( a, alphax_sum, a*b*alphabeta_sum ); + Vec4 e3 = NegativeMultiplySubtract( b, betax_sum, e2 ); + Vec4 e4 = MultiplyAdd( two, e3, e1 ); + + // apply the metric to the error term + Vec4 e5 = e4*m_metric; + Vec4 error = e5.SplatX() + e5.SplatY() + e5.SplatZ(); + + // keep the solution if it wins + if( CompareAnyLessThan( error, besterror ) ) + { + beststart = a; + bestend = b; + besterror = error; + besti = i; + bestj = j; + bestk = k; + bestiteration = iterationIndex; + } + + // advance + if( k == count ) + break; + part2 += m_points_weights[k]; + ++k; + } + + // advance + if( j == count ) + break; + part1 += m_points_weights[j]; + ++j; + } + + // advance + part0 += m_points_weights[i]; + } + + // stop if we didn't improve in this iteration + if( bestiteration != iterationIndex ) + break; + + // advance if possible + ++iterationIndex; + if( iterationIndex == m_iterationCount ) + break; + + // stop if a new iteration is an ordering that has already been tried + Vec3 axis = ( bestend - beststart ).GetVec3(); + if( !ConstructOrdering( axis, iterationIndex ) ) + break; + } + + // save the block if necessary + if( CompareAnyLessThan( besterror, m_besterror ) ) + { + // remap the indices + u8 const* order = ( u8* )m_order + 16*bestiteration; + + u8 unordered[16]; + for( int m = 0; m < besti; ++m ) + unordered[order[m]] = 0; + for( int m = besti; m < bestj; ++m ) + unordered[order[m]] = 2; + for( int m = bestj; m < bestk; ++m ) + unordered[order[m]] = 3; + for( int m = bestk; m < count; ++m ) + unordered[order[m]] = 1; + + m_colours->RemapIndices( unordered, bestindices ); + + // save the block + WriteColourBlock4( beststart.GetVec3(), bestend.GetVec3(), bestindices, block ); + + // save the error + m_besterror = besterror; + } +} + +} // namespace squish diff --git a/thirdparty/squish/clusterfit.h b/thirdparty/squish/clusterfit.h new file mode 100644 index 0000000000..17db5d387c --- /dev/null +++ b/thirdparty/squish/clusterfit.h @@ -0,0 +1,61 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + Copyright (c) 2007 Ignacio Castano icastano@nvidia.com + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_CLUSTERFIT_H +#define SQUISH_CLUSTERFIT_H + +#include <squish.h> +#include "maths.h" +#include "simd.h" +#include "colourfit.h" + +namespace squish { + +class ClusterFit : public ColourFit +{ +public: + ClusterFit( ColourSet const* colours, int flags ); + +private: + bool ConstructOrdering( Vec3 const& axis, int iteration ); + + virtual void Compress3( void* block ); + virtual void Compress4( void* block ); + + enum { kMaxIterations = 8 }; + + int m_iterationCount; + Vec3 m_principle; + u8 m_order[16*kMaxIterations]; + Vec4 m_points_weights[16]; + Vec4 m_xsum_wsum; + Vec4 m_metric; + Vec4 m_besterror; +}; + +} // namespace squish + +#endif // ndef SQUISH_CLUSTERFIT_H diff --git a/thirdparty/squish/colourblock.cpp b/thirdparty/squish/colourblock.cpp new file mode 100644 index 0000000000..e6a5788b74 --- /dev/null +++ b/thirdparty/squish/colourblock.cpp @@ -0,0 +1,214 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include "colourblock.h" + +namespace squish { + +static int FloatToInt( float a, int limit ) +{ + // use ANSI round-to-zero behaviour to get round-to-nearest + int i = ( int )( a + 0.5f ); + + // clamp to the limit + if( i < 0 ) + i = 0; + else if( i > limit ) + i = limit; + + // done + return i; +} + +static int FloatTo565( Vec3::Arg colour ) +{ + // get the components in the correct range + int r = FloatToInt( 31.0f*colour.X(), 31 ); + int g = FloatToInt( 63.0f*colour.Y(), 63 ); + int b = FloatToInt( 31.0f*colour.Z(), 31 ); + + // pack into a single value + return ( r << 11 ) | ( g << 5 ) | b; +} + +static void WriteColourBlock( int a, int b, u8* indices, void* block ) +{ + // get the block as bytes + u8* bytes = ( u8* )block; + + // write the endpoints + bytes[0] = ( u8 )( a & 0xff ); + bytes[1] = ( u8 )( a >> 8 ); + bytes[2] = ( u8 )( b & 0xff ); + bytes[3] = ( u8 )( b >> 8 ); + + // write the indices + for( int i = 0; i < 4; ++i ) + { + u8 const* ind = indices + 4*i; + bytes[4 + i] = ind[0] | ( ind[1] << 2 ) | ( ind[2] << 4 ) | ( ind[3] << 6 ); + } +} + +void WriteColourBlock3( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void* block ) +{ + // get the packed values + int a = FloatTo565( start ); + int b = FloatTo565( end ); + + // remap the indices + u8 remapped[16]; + if( a <= b ) + { + // use the indices directly + for( int i = 0; i < 16; ++i ) + remapped[i] = indices[i]; + } + else + { + // swap a and b + std::swap( a, b ); + for( int i = 0; i < 16; ++i ) + { + if( indices[i] == 0 ) + remapped[i] = 1; + else if( indices[i] == 1 ) + remapped[i] = 0; + else + remapped[i] = indices[i]; + } + } + + // write the block + WriteColourBlock( a, b, remapped, block ); +} + +void WriteColourBlock4( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void* block ) +{ + // get the packed values + int a = FloatTo565( start ); + int b = FloatTo565( end ); + + // remap the indices + u8 remapped[16]; + if( a < b ) + { + // swap a and b + std::swap( a, b ); + for( int i = 0; i < 16; ++i ) + remapped[i] = ( indices[i] ^ 0x1 ) & 0x3; + } + else if( a == b ) + { + // use index 0 + for( int i = 0; i < 16; ++i ) + remapped[i] = 0; + } + else + { + // use the indices directly + for( int i = 0; i < 16; ++i ) + remapped[i] = indices[i]; + } + + // write the block + WriteColourBlock( a, b, remapped, block ); +} + +static int Unpack565( u8 const* packed, u8* colour ) +{ + // build the packed value + int value = ( int )packed[0] | ( ( int )packed[1] << 8 ); + + // get the components in the stored range + u8 red = ( u8 )( ( value >> 11 ) & 0x1f ); + u8 green = ( u8 )( ( value >> 5 ) & 0x3f ); + u8 blue = ( u8 )( value & 0x1f ); + + // scale up to 8 bits + colour[0] = ( red << 3 ) | ( red >> 2 ); + colour[1] = ( green << 2 ) | ( green >> 4 ); + colour[2] = ( blue << 3 ) | ( blue >> 2 ); + colour[3] = 255; + + // return the value + return value; +} + +void DecompressColour( u8* rgba, void const* block, bool isDxt1 ) +{ + // get the block bytes + u8 const* bytes = reinterpret_cast< u8 const* >( block ); + + // unpack the endpoints + u8 codes[16]; + int a = Unpack565( bytes, codes ); + int b = Unpack565( bytes + 2, codes + 4 ); + + // generate the midpoints + for( int i = 0; i < 3; ++i ) + { + int c = codes[i]; + int d = codes[4 + i]; + + if( isDxt1 && a <= b ) + { + codes[8 + i] = ( u8 )( ( c + d )/2 ); + codes[12 + i] = 0; + } + else + { + codes[8 + i] = ( u8 )( ( 2*c + d )/3 ); + codes[12 + i] = ( u8 )( ( c + 2*d )/3 ); + } + } + + // fill in alpha for the intermediate values + codes[8 + 3] = 255; + codes[12 + 3] = ( isDxt1 && a <= b ) ? 0 : 255; + + // unpack the indices + u8 indices[16]; + for( int i = 0; i < 4; ++i ) + { + u8* ind = indices + 4*i; + u8 packed = bytes[4 + i]; + + ind[0] = packed & 0x3; + ind[1] = ( packed >> 2 ) & 0x3; + ind[2] = ( packed >> 4 ) & 0x3; + ind[3] = ( packed >> 6 ) & 0x3; + } + + // store out the colours + for( int i = 0; i < 16; ++i ) + { + u8 offset = 4*indices[i]; + for( int j = 0; j < 4; ++j ) + rgba[4*i + j] = codes[offset + j]; + } +} + +} // namespace squish diff --git a/thirdparty/squish/colourblock.h b/thirdparty/squish/colourblock.h new file mode 100644 index 0000000000..df0a47217f --- /dev/null +++ b/thirdparty/squish/colourblock.h @@ -0,0 +1,41 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_COLOURBLOCK_H +#define SQUISH_COLOURBLOCK_H + +#include <squish.h> +#include "maths.h" + +namespace squish { + +void WriteColourBlock3( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void* block ); +void WriteColourBlock4( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void* block ); + +void DecompressColour( u8* rgba, void const* block, bool isDxt1 ); + +} // namespace squish + +#endif // ndef SQUISH_COLOURBLOCK_H diff --git a/thirdparty/squish/colourfit.cpp b/thirdparty/squish/colourfit.cpp new file mode 100644 index 0000000000..dba2b87e81 --- /dev/null +++ b/thirdparty/squish/colourfit.cpp @@ -0,0 +1,50 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include "colourfit.h" +#include "colourset.h" + +namespace squish { + +ColourFit::ColourFit( ColourSet const* colours, int flags ) + : m_colours( colours ), + m_flags( flags ) +{ +} + +void ColourFit::Compress( void* block ) +{ + bool isDxt1 = ( ( m_flags & kDxt1 ) != 0 ); + if( isDxt1 ) + { + Compress3( block ); + if( !m_colours->IsTransparent() ) + Compress4( block ); + } + else + Compress4( block ); +} + +} // namespace squish diff --git a/thirdparty/squish/colourfit.h b/thirdparty/squish/colourfit.h new file mode 100644 index 0000000000..a2d0559a32 --- /dev/null +++ b/thirdparty/squish/colourfit.h @@ -0,0 +1,53 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_COLOURFIT_H +#define SQUISH_COLOURFIT_H + +#include <squish.h> +#include "maths.h" + +namespace squish { + +class ColourSet; + +class ColourFit +{ +public: + ColourFit( ColourSet const* colours, int flags ); + + void Compress( void* block ); + +protected: + virtual void Compress3( void* block ) = 0; + virtual void Compress4( void* block ) = 0; + + ColourSet const* m_colours; + int m_flags; +}; + +} // namespace squish + +#endif // ndef SQUISH_COLOURFIT_H diff --git a/thirdparty/squish/colourset.cpp b/thirdparty/squish/colourset.cpp new file mode 100644 index 0000000000..97d29d9873 --- /dev/null +++ b/thirdparty/squish/colourset.cpp @@ -0,0 +1,121 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include "colourset.h" + +namespace squish { + +ColourSet::ColourSet( u8 const* rgba, int mask, int flags ) + : m_count( 0 ), + m_transparent( false ) +{ + // check the compression mode for dxt1 + bool isDxt1 = ( ( flags & kDxt1 ) != 0 ); + bool weightByAlpha = ( ( flags & kWeightColourByAlpha ) != 0 ); + + // create the minimal set + for( int i = 0; i < 16; ++i ) + { + // check this pixel is enabled + int bit = 1 << i; + if( ( mask & bit ) == 0 ) + { + m_remap[i] = -1; + continue; + } + + // check for transparent pixels when using dxt1 + if( isDxt1 && rgba[4*i + 3] < 128 ) + { + m_remap[i] = -1; + m_transparent = true; + continue; + } + + // loop over previous points for a match + for( int j = 0;; ++j ) + { + // allocate a new point + if( j == i ) + { + // normalise coordinates to [0,1] + float x = ( float )rgba[4*i] / 255.0f; + float y = ( float )rgba[4*i + 1] / 255.0f; + float z = ( float )rgba[4*i + 2] / 255.0f; + + // ensure there is always non-zero weight even for zero alpha + float w = ( float )( rgba[4*i + 3] + 1 ) / 256.0f; + + // add the point + m_points[m_count] = Vec3( x, y, z ); + m_weights[m_count] = ( weightByAlpha ? w : 1.0f ); + m_remap[i] = m_count; + + // advance + ++m_count; + break; + } + + // check for a match + int oldbit = 1 << j; + bool match = ( ( mask & oldbit ) != 0 ) + && ( rgba[4*i] == rgba[4*j] ) + && ( rgba[4*i + 1] == rgba[4*j + 1] ) + && ( rgba[4*i + 2] == rgba[4*j + 2] ) + && ( rgba[4*j + 3] >= 128 || !isDxt1 ); + if( match ) + { + // get the index of the match + int index = m_remap[j]; + + // ensure there is always non-zero weight even for zero alpha + float w = ( float )( rgba[4*i + 3] + 1 ) / 256.0f; + + // map to this point and increase the weight + m_weights[index] += ( weightByAlpha ? w : 1.0f ); + m_remap[i] = index; + break; + } + } + } + + // square root the weights + for( int i = 0; i < m_count; ++i ) + m_weights[i] = std::sqrt( m_weights[i] ); +} + +void ColourSet::RemapIndices( u8 const* source, u8* target ) const +{ + for( int i = 0; i < 16; ++i ) + { + int j = m_remap[i]; + if( j == -1 ) + target[i] = 3; + else + target[i] = source[j]; + } +} + +} // namespace squish diff --git a/thirdparty/squish/colourset.h b/thirdparty/squish/colourset.h new file mode 100644 index 0000000000..dcf56ae28e --- /dev/null +++ b/thirdparty/squish/colourset.h @@ -0,0 +1,58 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_COLOURSET_H +#define SQUISH_COLOURSET_H + +#include <squish.h> +#include "maths.h" + +namespace squish { + +/*! @brief Represents a set of block colours +*/ +class ColourSet +{ +public: + ColourSet( u8 const* rgba, int mask, int flags ); + + int GetCount() const { return m_count; } + Vec3 const* GetPoints() const { return m_points; } + float const* GetWeights() const { return m_weights; } + bool IsTransparent() const { return m_transparent; } + + void RemapIndices( u8 const* source, u8* target ) const; + +private: + int m_count; + Vec3 m_points[16]; + float m_weights[16]; + int m_remap[16]; + bool m_transparent; +}; + +} // namespace sqish + +#endif // ndef SQUISH_COLOURSET_H diff --git a/thirdparty/squish/config.h b/thirdparty/squish/config.h new file mode 100644 index 0000000000..7bf3760c26 --- /dev/null +++ b/thirdparty/squish/config.h @@ -0,0 +1,49 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_CONFIG_H +#define SQUISH_CONFIG_H + +// Set to 1 when building squish to use Altivec instructions. +#ifndef SQUISH_USE_ALTIVEC +#define SQUISH_USE_ALTIVEC 0 +#endif + +// Set to 1 or 2 when building squish to use SSE or SSE2 instructions. +#ifndef SQUISH_USE_SSE +#define SQUISH_USE_SSE 0 +#endif + +// Internally et SQUISH_USE_SIMD when either Altivec or SSE is available. +#if SQUISH_USE_ALTIVEC && SQUISH_USE_SSE +#error "Cannot enable both Altivec and SSE!" +#endif +#if SQUISH_USE_ALTIVEC || SQUISH_USE_SSE +#define SQUISH_USE_SIMD 1 +#else +#define SQUISH_USE_SIMD 0 +#endif + +#endif // ndef SQUISH_CONFIG_H diff --git a/thirdparty/squish/maths.cpp b/thirdparty/squish/maths.cpp new file mode 100644 index 0000000000..59818a4d2b --- /dev/null +++ b/thirdparty/squish/maths.cpp @@ -0,0 +1,227 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +/*! @file + + The symmetric eigensystem solver algorithm is from + http://www.geometrictools.com/Documentation/EigenSymmetric3x3.pdf +*/ + +#include "maths.h" +#include <cfloat> + +namespace squish { + +Sym3x3 ComputeWeightedCovariance( int n, Vec3 const* points, float const* weights ) +{ + // compute the centroid + float total = 0.0f; + Vec3 centroid( 0.0f ); + for( int i = 0; i < n; ++i ) + { + total += weights[i]; + centroid += weights[i]*points[i]; + } + centroid /= total; + + // accumulate the covariance matrix + Sym3x3 covariance( 0.0f ); + for( int i = 0; i < n; ++i ) + { + Vec3 a = points[i] - centroid; + Vec3 b = weights[i]*a; + + covariance[0] += a.X()*b.X(); + covariance[1] += a.X()*b.Y(); + covariance[2] += a.X()*b.Z(); + covariance[3] += a.Y()*b.Y(); + covariance[4] += a.Y()*b.Z(); + covariance[5] += a.Z()*b.Z(); + } + + // return it + return covariance; +} + +static Vec3 GetMultiplicity1Evector( Sym3x3 const& matrix, float evalue ) +{ + // compute M + Sym3x3 m; + m[0] = matrix[0] - evalue; + m[1] = matrix[1]; + m[2] = matrix[2]; + m[3] = matrix[3] - evalue; + m[4] = matrix[4]; + m[5] = matrix[5] - evalue; + + // compute U + Sym3x3 u; + u[0] = m[3]*m[5] - m[4]*m[4]; + u[1] = m[2]*m[4] - m[1]*m[5]; + u[2] = m[1]*m[4] - m[2]*m[3]; + u[3] = m[0]*m[5] - m[2]*m[2]; + u[4] = m[1]*m[2] - m[4]*m[0]; + u[5] = m[0]*m[3] - m[1]*m[1]; + + // find the largest component + float mc = std::fabs( u[0] ); + int mi = 0; + for( int i = 1; i < 6; ++i ) + { + float c = std::fabs( u[i] ); + if( c > mc ) + { + mc = c; + mi = i; + } + } + + // pick the column with this component + switch( mi ) + { + case 0: + return Vec3( u[0], u[1], u[2] ); + + case 1: + case 3: + return Vec3( u[1], u[3], u[4] ); + + default: + return Vec3( u[2], u[4], u[5] ); + } +} + +static Vec3 GetMultiplicity2Evector( Sym3x3 const& matrix, float evalue ) +{ + // compute M + Sym3x3 m; + m[0] = matrix[0] - evalue; + m[1] = matrix[1]; + m[2] = matrix[2]; + m[3] = matrix[3] - evalue; + m[4] = matrix[4]; + m[5] = matrix[5] - evalue; + + // find the largest component + float mc = std::fabs( m[0] ); + int mi = 0; + for( int i = 1; i < 6; ++i ) + { + float c = std::fabs( m[i] ); + if( c > mc ) + { + mc = c; + mi = i; + } + } + + // pick the first eigenvector based on this index + switch( mi ) + { + case 0: + case 1: + return Vec3( -m[1], m[0], 0.0f ); + + case 2: + return Vec3( m[2], 0.0f, -m[0] ); + + case 3: + case 4: + return Vec3( 0.0f, -m[4], m[3] ); + + default: + return Vec3( 0.0f, -m[5], m[4] ); + } +} + +Vec3 ComputePrincipleComponent( Sym3x3 const& matrix ) +{ + // compute the cubic coefficients + float c0 = matrix[0]*matrix[3]*matrix[5] + + 2.0f*matrix[1]*matrix[2]*matrix[4] + - matrix[0]*matrix[4]*matrix[4] + - matrix[3]*matrix[2]*matrix[2] + - matrix[5]*matrix[1]*matrix[1]; + float c1 = matrix[0]*matrix[3] + matrix[0]*matrix[5] + matrix[3]*matrix[5] + - matrix[1]*matrix[1] - matrix[2]*matrix[2] - matrix[4]*matrix[4]; + float c2 = matrix[0] + matrix[3] + matrix[5]; + + // compute the quadratic coefficients + float a = c1 - ( 1.0f/3.0f )*c2*c2; + float b = ( -2.0f/27.0f )*c2*c2*c2 + ( 1.0f/3.0f )*c1*c2 - c0; + + // compute the root count check + float Q = 0.25f*b*b + ( 1.0f/27.0f )*a*a*a; + + // test the multiplicity + if( FLT_EPSILON < Q ) + { + // only one root, which implies we have a multiple of the identity + return Vec3( 1.0f ); + } + else if( Q < -FLT_EPSILON ) + { + // three distinct roots + float theta = std::atan2( std::sqrt( -Q ), -0.5f*b ); + float rho = std::sqrt( 0.25f*b*b - Q ); + + float rt = std::pow( rho, 1.0f/3.0f ); + float ct = std::cos( theta/3.0f ); + float st = std::sin( theta/3.0f ); + + float l1 = ( 1.0f/3.0f )*c2 + 2.0f*rt*ct; + float l2 = ( 1.0f/3.0f )*c2 - rt*( ct + ( float )sqrt( 3.0f )*st ); + float l3 = ( 1.0f/3.0f )*c2 - rt*( ct - ( float )sqrt( 3.0f )*st ); + + // pick the larger + if( std::fabs( l2 ) > std::fabs( l1 ) ) + l1 = l2; + if( std::fabs( l3 ) > std::fabs( l1 ) ) + l1 = l3; + + // get the eigenvector + return GetMultiplicity1Evector( matrix, l1 ); + } + else // if( -FLT_EPSILON <= Q && Q <= FLT_EPSILON ) + { + // two roots + float rt; + if( b < 0.0f ) + rt = -std::pow( -0.5f*b, 1.0f/3.0f ); + else + rt = std::pow( 0.5f*b, 1.0f/3.0f ); + + float l1 = ( 1.0f/3.0f )*c2 + rt; // repeated + float l2 = ( 1.0f/3.0f )*c2 - 2.0f*rt; + + // get the eigenvector + if( std::fabs( l1 ) > std::fabs( l2 ) ) + return GetMultiplicity2Evector( matrix, l1 ); + else + return GetMultiplicity1Evector( matrix, l2 ); + } +} + +} // namespace squish diff --git a/thirdparty/squish/maths.h b/thirdparty/squish/maths.h new file mode 100644 index 0000000000..769ae463f7 --- /dev/null +++ b/thirdparty/squish/maths.h @@ -0,0 +1,233 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_MATHS_H +#define SQUISH_MATHS_H + +#include <cmath> +#include <algorithm> +#include "config.h" + +namespace squish { + +class Vec3 +{ +public: + typedef Vec3 const& Arg; + + Vec3() + { + } + + explicit Vec3( float s ) + { + m_x = s; + m_y = s; + m_z = s; + } + + Vec3( float x, float y, float z ) + { + m_x = x; + m_y = y; + m_z = z; + } + + float X() const { return m_x; } + float Y() const { return m_y; } + float Z() const { return m_z; } + + Vec3 operator-() const + { + return Vec3( -m_x, -m_y, -m_z ); + } + + Vec3& operator+=( Arg v ) + { + m_x += v.m_x; + m_y += v.m_y; + m_z += v.m_z; + return *this; + } + + Vec3& operator-=( Arg v ) + { + m_x -= v.m_x; + m_y -= v.m_y; + m_z -= v.m_z; + return *this; + } + + Vec3& operator*=( Arg v ) + { + m_x *= v.m_x; + m_y *= v.m_y; + m_z *= v.m_z; + return *this; + } + + Vec3& operator*=( float s ) + { + m_x *= s; + m_y *= s; + m_z *= s; + return *this; + } + + Vec3& operator/=( Arg v ) + { + m_x /= v.m_x; + m_y /= v.m_y; + m_z /= v.m_z; + return *this; + } + + Vec3& operator/=( float s ) + { + float t = 1.0f/s; + m_x *= t; + m_y *= t; + m_z *= t; + return *this; + } + + friend Vec3 operator+( Arg left, Arg right ) + { + Vec3 copy( left ); + return copy += right; + } + + friend Vec3 operator-( Arg left, Arg right ) + { + Vec3 copy( left ); + return copy -= right; + } + + friend Vec3 operator*( Arg left, Arg right ) + { + Vec3 copy( left ); + return copy *= right; + } + + friend Vec3 operator*( Arg left, float right ) + { + Vec3 copy( left ); + return copy *= right; + } + + friend Vec3 operator*( float left, Arg right ) + { + Vec3 copy( right ); + return copy *= left; + } + + friend Vec3 operator/( Arg left, Arg right ) + { + Vec3 copy( left ); + return copy /= right; + } + + friend Vec3 operator/( Arg left, float right ) + { + Vec3 copy( left ); + return copy /= right; + } + + friend float Dot( Arg left, Arg right ) + { + return left.m_x*right.m_x + left.m_y*right.m_y + left.m_z*right.m_z; + } + + friend Vec3 Min( Arg left, Arg right ) + { + return Vec3( + std::min( left.m_x, right.m_x ), + std::min( left.m_y, right.m_y ), + std::min( left.m_z, right.m_z ) + ); + } + + friend Vec3 Max( Arg left, Arg right ) + { + return Vec3( + std::max( left.m_x, right.m_x ), + std::max( left.m_y, right.m_y ), + std::max( left.m_z, right.m_z ) + ); + } + + friend Vec3 Truncate( Arg v ) + { + return Vec3( + v.m_x > 0.0f ? std::floor( v.m_x ) : std::ceil( v.m_x ), + v.m_y > 0.0f ? std::floor( v.m_y ) : std::ceil( v.m_y ), + v.m_z > 0.0f ? std::floor( v.m_z ) : std::ceil( v.m_z ) + ); + } + +private: + float m_x; + float m_y; + float m_z; +}; + +inline float LengthSquared( Vec3::Arg v ) +{ + return Dot( v, v ); +} + +class Sym3x3 +{ +public: + Sym3x3() + { + } + + Sym3x3( float s ) + { + for( int i = 0; i < 6; ++i ) + m_x[i] = s; + } + + float operator[]( int index ) const + { + return m_x[index]; + } + + float& operator[]( int index ) + { + return m_x[index]; + } + +private: + float m_x[6]; +}; + +Sym3x3 ComputeWeightedCovariance( int n, Vec3 const* points, float const* weights ); +Vec3 ComputePrincipleComponent( Sym3x3 const& matrix ); + +} // namespace squish + +#endif // ndef SQUISH_MATHS_H diff --git a/thirdparty/squish/rangefit.cpp b/thirdparty/squish/rangefit.cpp new file mode 100644 index 0000000000..5a66436056 --- /dev/null +++ b/thirdparty/squish/rangefit.cpp @@ -0,0 +1,202 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include "rangefit.h" +#include "colourset.h" +#include "colourblock.h" +#include <cfloat> + +namespace squish { + +RangeFit::RangeFit( ColourSet const* colours, int flags ) + : ColourFit( colours, flags ) +{ + // initialise the metric + bool perceptual = ( ( m_flags & kColourMetricPerceptual ) != 0 ); + if( perceptual ) + m_metric = Vec3( 0.2126f, 0.7152f, 0.0722f ); + else + m_metric = Vec3( 1.0f ); + + // initialise the best error + m_besterror = FLT_MAX; + + // cache some values + int const count = m_colours->GetCount(); + Vec3 const* values = m_colours->GetPoints(); + float const* weights = m_colours->GetWeights(); + + // get the covariance matrix + Sym3x3 covariance = ComputeWeightedCovariance( count, values, weights ); + + // compute the principle component + Vec3 principle = ComputePrincipleComponent( covariance ); + + // get the min and max range as the codebook endpoints + Vec3 start( 0.0f ); + Vec3 end( 0.0f ); + if( count > 0 ) + { + float min, max; + + // compute the range + start = end = values[0]; + min = max = Dot( values[0], principle ); + for( int i = 1; i < count; ++i ) + { + float val = Dot( values[i], principle ); + if( val < min ) + { + start = values[i]; + min = val; + } + else if( val > max ) + { + end = values[i]; + max = val; + } + } + } + + // clamp the output to [0, 1] + Vec3 const one( 1.0f ); + Vec3 const zero( 0.0f ); + start = Min( one, Max( zero, start ) ); + end = Min( one, Max( zero, end ) ); + + // clamp to the grid and save + Vec3 const grid( 31.0f, 63.0f, 31.0f ); + Vec3 const gridrcp( 1.0f/31.0f, 1.0f/63.0f, 1.0f/31.0f ); + Vec3 const half( 0.5f ); + m_start = Truncate( grid*start + half )*gridrcp; + m_end = Truncate( grid*end + half )*gridrcp; +} + +void RangeFit::Compress3( void* block ) +{ + // cache some values + int const count = m_colours->GetCount(); + Vec3 const* values = m_colours->GetPoints(); + + // create a codebook + Vec3 codes[3]; + codes[0] = m_start; + codes[1] = m_end; + codes[2] = 0.5f*m_start + 0.5f*m_end; + + // match each point to the closest code + u8 closest[16]; + float error = 0.0f; + for( int i = 0; i < count; ++i ) + { + // find the closest code + float dist = FLT_MAX; + int idx = 0; + for( int j = 0; j < 3; ++j ) + { + float d = LengthSquared( m_metric*( values[i] - codes[j] ) ); + if( d < dist ) + { + dist = d; + idx = j; + } + } + + // save the index + closest[i] = ( u8 )idx; + + // accumulate the error + error += dist; + } + + // save this scheme if it wins + if( error < m_besterror ) + { + // remap the indices + u8 indices[16]; + m_colours->RemapIndices( closest, indices ); + + // save the block + WriteColourBlock3( m_start, m_end, indices, block ); + + // save the error + m_besterror = error; + } +} + +void RangeFit::Compress4( void* block ) +{ + // cache some values + int const count = m_colours->GetCount(); + Vec3 const* values = m_colours->GetPoints(); + + // create a codebook + Vec3 codes[4]; + codes[0] = m_start; + codes[1] = m_end; + codes[2] = ( 2.0f/3.0f )*m_start + ( 1.0f/3.0f )*m_end; + codes[3] = ( 1.0f/3.0f )*m_start + ( 2.0f/3.0f )*m_end; + + // match each point to the closest code + u8 closest[16]; + float error = 0.0f; + for( int i = 0; i < count; ++i ) + { + // find the closest code + float dist = FLT_MAX; + int idx = 0; + for( int j = 0; j < 4; ++j ) + { + float d = LengthSquared( m_metric*( values[i] - codes[j] ) ); + if( d < dist ) + { + dist = d; + idx = j; + } + } + + // save the index + closest[i] = ( u8 )idx; + + // accumulate the error + error += dist; + } + + // save this scheme if it wins + if( error < m_besterror ) + { + // remap the indices + u8 indices[16]; + m_colours->RemapIndices( closest, indices ); + + // save the block + WriteColourBlock4( m_start, m_end, indices, block ); + + // save the error + m_besterror = error; + } +} + +} // namespace squish diff --git a/thirdparty/squish/rangefit.h b/thirdparty/squish/rangefit.h new file mode 100644 index 0000000000..795201993a --- /dev/null +++ b/thirdparty/squish/rangefit.h @@ -0,0 +1,54 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_RANGEFIT_H +#define SQUISH_RANGEFIT_H + +#include <squish.h> +#include "colourfit.h" +#include "maths.h" + +namespace squish { + +class ColourSet; + +class RangeFit : public ColourFit +{ +public: + RangeFit( ColourSet const* colours, int flags ); + +private: + virtual void Compress3( void* block ); + virtual void Compress4( void* block ); + + Vec3 m_metric; + Vec3 m_start; + Vec3 m_end; + float m_besterror; +}; + +} // squish + +#endif // ndef SQUISH_RANGEFIT_H diff --git a/thirdparty/squish/simd.h b/thirdparty/squish/simd.h new file mode 100644 index 0000000000..22bd10a460 --- /dev/null +++ b/thirdparty/squish/simd.h @@ -0,0 +1,40 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_SIMD_H +#define SQUISH_SIMD_H + +#include "maths.h" + +#if SQUISH_USE_ALTIVEC +#include "simd_ve.h" +#elif SQUISH_USE_SSE +#include "simd_sse.h" +#else +#include "simd_float.h" +#endif + + +#endif // ndef SQUISH_SIMD_H diff --git a/thirdparty/squish/simd_float.h b/thirdparty/squish/simd_float.h new file mode 100644 index 0000000000..e6351b80eb --- /dev/null +++ b/thirdparty/squish/simd_float.h @@ -0,0 +1,183 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_SIMD_FLOAT_H +#define SQUISH_SIMD_FLOAT_H + +#include <algorithm> + +namespace squish { + +#define VEC4_CONST( X ) Vec4( X ) + +class Vec4 +{ +public: + typedef Vec4 const& Arg; + + Vec4() {} + + explicit Vec4( float s ) + : m_x( s ), + m_y( s ), + m_z( s ), + m_w( s ) + { + } + + Vec4( float x, float y, float z, float w ) + : m_x( x ), + m_y( y ), + m_z( z ), + m_w( w ) + { + } + + Vec3 GetVec3() const + { + return Vec3( m_x, m_y, m_z ); + } + + Vec4 SplatX() const { return Vec4( m_x ); } + Vec4 SplatY() const { return Vec4( m_y ); } + Vec4 SplatZ() const { return Vec4( m_z ); } + Vec4 SplatW() const { return Vec4( m_w ); } + + Vec4& operator+=( Arg v ) + { + m_x += v.m_x; + m_y += v.m_y; + m_z += v.m_z; + m_w += v.m_w; + return *this; + } + + Vec4& operator-=( Arg v ) + { + m_x -= v.m_x; + m_y -= v.m_y; + m_z -= v.m_z; + m_w -= v.m_w; + return *this; + } + + Vec4& operator*=( Arg v ) + { + m_x *= v.m_x; + m_y *= v.m_y; + m_z *= v.m_z; + m_w *= v.m_w; + return *this; + } + + friend Vec4 operator+( Vec4::Arg left, Vec4::Arg right ) + { + Vec4 copy( left ); + return copy += right; + } + + friend Vec4 operator-( Vec4::Arg left, Vec4::Arg right ) + { + Vec4 copy( left ); + return copy -= right; + } + + friend Vec4 operator*( Vec4::Arg left, Vec4::Arg right ) + { + Vec4 copy( left ); + return copy *= right; + } + + //! Returns a*b + c + friend Vec4 MultiplyAdd( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c ) + { + return a*b + c; + } + + //! Returns -( a*b - c ) + friend Vec4 NegativeMultiplySubtract( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c ) + { + return c - a*b; + } + + friend Vec4 Reciprocal( Vec4::Arg v ) + { + return Vec4( + 1.0f/v.m_x, + 1.0f/v.m_y, + 1.0f/v.m_z, + 1.0f/v.m_w + ); + } + + friend Vec4 Min( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( + std::min( left.m_x, right.m_x ), + std::min( left.m_y, right.m_y ), + std::min( left.m_z, right.m_z ), + std::min( left.m_w, right.m_w ) + ); + } + + friend Vec4 Max( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( + std::max( left.m_x, right.m_x ), + std::max( left.m_y, right.m_y ), + std::max( left.m_z, right.m_z ), + std::max( left.m_w, right.m_w ) + ); + } + + friend Vec4 Truncate( Vec4::Arg v ) + { + return Vec4( + v.m_x > 0.0f ? std::floor( v.m_x ) : std::ceil( v.m_x ), + v.m_y > 0.0f ? std::floor( v.m_y ) : std::ceil( v.m_y ), + v.m_z > 0.0f ? std::floor( v.m_z ) : std::ceil( v.m_z ), + v.m_w > 0.0f ? std::floor( v.m_w ) : std::ceil( v.m_w ) + ); + } + + friend bool CompareAnyLessThan( Vec4::Arg left, Vec4::Arg right ) + { + return left.m_x < right.m_x + || left.m_y < right.m_y + || left.m_z < right.m_z + || left.m_w < right.m_w; + } + +private: + float m_x; + float m_y; + float m_z; + float m_w; +}; + +} // namespace squish + +#endif // ndef SQUISH_SIMD_FLOAT_H + diff --git a/thirdparty/squish/simd_sse.h b/thirdparty/squish/simd_sse.h new file mode 100644 index 0000000000..e584f2a0e5 --- /dev/null +++ b/thirdparty/squish/simd_sse.h @@ -0,0 +1,180 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_SIMD_SSE_H +#define SQUISH_SIMD_SSE_H + +#include <xmmintrin.h> +#if ( SQUISH_USE_SSE > 1 ) +#include <emmintrin.h> +#endif + +#define SQUISH_SSE_SPLAT( a ) \ + ( ( a ) | ( ( a ) << 2 ) | ( ( a ) << 4 ) | ( ( a ) << 6 ) ) + +#define SQUISH_SSE_SHUF( x, y, z, w ) \ + ( ( x ) | ( ( y ) << 2 ) | ( ( z ) << 4 ) | ( ( w ) << 6 ) ) + +namespace squish { + +#define VEC4_CONST( X ) Vec4( X ) + +class Vec4 +{ +public: + typedef Vec4 const& Arg; + + Vec4() {} + + explicit Vec4( __m128 v ) : m_v( v ) {} + + Vec4( Vec4 const& arg ) : m_v( arg.m_v ) {} + + Vec4& operator=( Vec4 const& arg ) + { + m_v = arg.m_v; + return *this; + } + + explicit Vec4( float s ) : m_v( _mm_set1_ps( s ) ) {} + + Vec4( float x, float y, float z, float w ) : m_v( _mm_setr_ps( x, y, z, w ) ) {} + + Vec3 GetVec3() const + { +#ifdef __GNUC__ + __attribute__ ((__aligned__ (16))) float c[4]; +#else + __declspec(align(16)) float c[4]; +#endif + _mm_store_ps( c, m_v ); + return Vec3( c[0], c[1], c[2] ); + } + + Vec4 SplatX() const { return Vec4( _mm_shuffle_ps( m_v, m_v, SQUISH_SSE_SPLAT( 0 ) ) ); } + Vec4 SplatY() const { return Vec4( _mm_shuffle_ps( m_v, m_v, SQUISH_SSE_SPLAT( 1 ) ) ); } + Vec4 SplatZ() const { return Vec4( _mm_shuffle_ps( m_v, m_v, SQUISH_SSE_SPLAT( 2 ) ) ); } + Vec4 SplatW() const { return Vec4( _mm_shuffle_ps( m_v, m_v, SQUISH_SSE_SPLAT( 3 ) ) ); } + + Vec4& operator+=( Arg v ) + { + m_v = _mm_add_ps( m_v, v.m_v ); + return *this; + } + + Vec4& operator-=( Arg v ) + { + m_v = _mm_sub_ps( m_v, v.m_v ); + return *this; + } + + Vec4& operator*=( Arg v ) + { + m_v = _mm_mul_ps( m_v, v.m_v ); + return *this; + } + + friend Vec4 operator+( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( _mm_add_ps( left.m_v, right.m_v ) ); + } + + friend Vec4 operator-( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( _mm_sub_ps( left.m_v, right.m_v ) ); + } + + friend Vec4 operator*( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( _mm_mul_ps( left.m_v, right.m_v ) ); + } + + //! Returns a*b + c + friend Vec4 MultiplyAdd( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c ) + { + return Vec4( _mm_add_ps( _mm_mul_ps( a.m_v, b.m_v ), c.m_v ) ); + } + + //! Returns -( a*b - c ) + friend Vec4 NegativeMultiplySubtract( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c ) + { + return Vec4( _mm_sub_ps( c.m_v, _mm_mul_ps( a.m_v, b.m_v ) ) ); + } + + friend Vec4 Reciprocal( Vec4::Arg v ) + { + // get the reciprocal estimate + __m128 estimate = _mm_rcp_ps( v.m_v ); + + // one round of Newton-Rhaphson refinement + __m128 diff = _mm_sub_ps( _mm_set1_ps( 1.0f ), _mm_mul_ps( estimate, v.m_v ) ); + return Vec4( _mm_add_ps( _mm_mul_ps( diff, estimate ), estimate ) ); + } + + friend Vec4 Min( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( _mm_min_ps( left.m_v, right.m_v ) ); + } + + friend Vec4 Max( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( _mm_max_ps( left.m_v, right.m_v ) ); + } + + friend Vec4 Truncate( Vec4::Arg v ) + { +#if ( SQUISH_USE_SSE == 1 ) + // convert to ints + __m128 input = v.m_v; + __m64 lo = _mm_cvttps_pi32( input ); + __m64 hi = _mm_cvttps_pi32( _mm_movehl_ps( input, input ) ); + + // convert to floats + __m128 part = _mm_movelh_ps( input, _mm_cvtpi32_ps( input, hi ) ); + __m128 truncated = _mm_cvtpi32_ps( part, lo ); + + // clear out the MMX multimedia state to allow FP calls later + _mm_empty(); + return Vec4( truncated ); +#else + // use SSE2 instructions + return Vec4( _mm_cvtepi32_ps( _mm_cvttps_epi32( v.m_v ) ) ); +#endif + } + + friend bool CompareAnyLessThan( Vec4::Arg left, Vec4::Arg right ) + { + __m128 bits = _mm_cmplt_ps( left.m_v, right.m_v ); + int value = _mm_movemask_ps( bits ); + return value != 0; + } + +private: + __m128 m_v; +}; + +} // namespace squish + +#endif // ndef SQUISH_SIMD_SSE_H diff --git a/thirdparty/squish/simd_ve.h b/thirdparty/squish/simd_ve.h new file mode 100644 index 0000000000..9a33955ffc --- /dev/null +++ b/thirdparty/squish/simd_ve.h @@ -0,0 +1,166 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_SIMD_VE_H +#define SQUISH_SIMD_VE_H + +#include <altivec.h> +#undef bool + +namespace squish { + +#define VEC4_CONST( X ) Vec4( ( vector float )( X ) ) + +class Vec4 +{ +public: + typedef Vec4 Arg; + + Vec4() {} + + explicit Vec4( vector float v ) : m_v( v ) {} + + Vec4( Vec4 const& arg ) : m_v( arg.m_v ) {} + + Vec4& operator=( Vec4 const& arg ) + { + m_v = arg.m_v; + return *this; + } + + explicit Vec4( float s ) + { + union { vector float v; float c[4]; } u; + u.c[0] = s; + u.c[1] = s; + u.c[2] = s; + u.c[3] = s; + m_v = u.v; + } + + Vec4( float x, float y, float z, float w ) + { + union { vector float v; float c[4]; } u; + u.c[0] = x; + u.c[1] = y; + u.c[2] = z; + u.c[3] = w; + m_v = u.v; + } + + Vec3 GetVec3() const + { + union { vector float v; float c[4]; } u; + u.v = m_v; + return Vec3( u.c[0], u.c[1], u.c[2] ); + } + + Vec4 SplatX() const { return Vec4( vec_splat( m_v, 0 ) ); } + Vec4 SplatY() const { return Vec4( vec_splat( m_v, 1 ) ); } + Vec4 SplatZ() const { return Vec4( vec_splat( m_v, 2 ) ); } + Vec4 SplatW() const { return Vec4( vec_splat( m_v, 3 ) ); } + + Vec4& operator+=( Arg v ) + { + m_v = vec_add( m_v, v.m_v ); + return *this; + } + + Vec4& operator-=( Arg v ) + { + m_v = vec_sub( m_v, v.m_v ); + return *this; + } + + Vec4& operator*=( Arg v ) + { + m_v = vec_madd( m_v, v.m_v, ( vector float )( -0.0f ) ); + return *this; + } + + friend Vec4 operator+( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( vec_add( left.m_v, right.m_v ) ); + } + + friend Vec4 operator-( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( vec_sub( left.m_v, right.m_v ) ); + } + + friend Vec4 operator*( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( vec_madd( left.m_v, right.m_v, ( vector float )( -0.0f ) ) ); + } + + //! Returns a*b + c + friend Vec4 MultiplyAdd( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c ) + { + return Vec4( vec_madd( a.m_v, b.m_v, c.m_v ) ); + } + + //! Returns -( a*b - c ) + friend Vec4 NegativeMultiplySubtract( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c ) + { + return Vec4( vec_nmsub( a.m_v, b.m_v, c.m_v ) ); + } + + friend Vec4 Reciprocal( Vec4::Arg v ) + { + // get the reciprocal estimate + vector float estimate = vec_re( v.m_v ); + + // one round of Newton-Rhaphson refinement + vector float diff = vec_nmsub( estimate, v.m_v, ( vector float )( 1.0f ) ); + return Vec4( vec_madd( diff, estimate, estimate ) ); + } + + friend Vec4 Min( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( vec_min( left.m_v, right.m_v ) ); + } + + friend Vec4 Max( Vec4::Arg left, Vec4::Arg right ) + { + return Vec4( vec_max( left.m_v, right.m_v ) ); + } + + friend Vec4 Truncate( Vec4::Arg v ) + { + return Vec4( vec_trunc( v.m_v ) ); + } + + friend bool CompareAnyLessThan( Vec4::Arg left, Vec4::Arg right ) + { + return vec_any_lt( left.m_v, right.m_v ) != 0; + } + +private: + vector float m_v; +}; + +} // namespace squish + +#endif // ndef SQUISH_SIMD_VE_H diff --git a/thirdparty/squish/singlecolourfit.cpp b/thirdparty/squish/singlecolourfit.cpp new file mode 100644 index 0000000000..bd02cc41ab --- /dev/null +++ b/thirdparty/squish/singlecolourfit.cpp @@ -0,0 +1,173 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include "singlecolourfit.h" +#include "colourset.h" +#include "colourblock.h" +#include <climits> + +namespace squish { + +struct SourceBlock +{ + u8 start; + u8 end; + u8 error; +}; + +struct SingleColourLookup +{ + SourceBlock sources[2]; +}; + +#include "singlecolourlookup.inl" + +static int FloatToInt( float a, int limit ) +{ + // use ANSI round-to-zero behaviour to get round-to-nearest + int i = ( int )( a + 0.5f ); + + // clamp to the limit + if( i < 0 ) + i = 0; + else if( i > limit ) + i = limit; + + // done + return i; +} + +SingleColourFit::SingleColourFit( ColourSet const* colours, int flags ) + : ColourFit( colours, flags ) +{ + // grab the single colour + Vec3 const* values = m_colours->GetPoints(); + m_colour[0] = ( u8 )FloatToInt( 255.0f*values->X(), 255 ); + m_colour[1] = ( u8 )FloatToInt( 255.0f*values->Y(), 255 ); + m_colour[2] = ( u8 )FloatToInt( 255.0f*values->Z(), 255 ); + + // initialise the best error + m_besterror = INT_MAX; +} + +void SingleColourFit::Compress3( void* block ) +{ + // build the table of lookups + SingleColourLookup const* const lookups[] = + { + lookup_5_3, + lookup_6_3, + lookup_5_3 + }; + + // find the best end-points and index + ComputeEndPoints( lookups ); + + // build the block if we win + if( m_error < m_besterror ) + { + // remap the indices + u8 indices[16]; + m_colours->RemapIndices( &m_index, indices ); + + // save the block + WriteColourBlock3( m_start, m_end, indices, block ); + + // save the error + m_besterror = m_error; + } +} + +void SingleColourFit::Compress4( void* block ) +{ + // build the table of lookups + SingleColourLookup const* const lookups[] = + { + lookup_5_4, + lookup_6_4, + lookup_5_4 + }; + + // find the best end-points and index + ComputeEndPoints( lookups ); + + // build the block if we win + if( m_error < m_besterror ) + { + // remap the indices + u8 indices[16]; + m_colours->RemapIndices( &m_index, indices ); + + // save the block + WriteColourBlock4( m_start, m_end, indices, block ); + + // save the error + m_besterror = m_error; + } +} + +void SingleColourFit::ComputeEndPoints( SingleColourLookup const* const* lookups ) +{ + // check each index combination (endpoint or intermediate) + m_error = INT_MAX; + for( int index = 0; index < 2; ++index ) + { + // check the error for this codebook index + SourceBlock const* sources[3]; + int error = 0; + for( int channel = 0; channel < 3; ++channel ) + { + // grab the lookup table and index for this channel + SingleColourLookup const* lookup = lookups[channel]; + int target = m_colour[channel]; + + // store a pointer to the source for this channel + sources[channel] = lookup[target].sources + index; + + // accumulate the error + int diff = sources[channel]->error; + error += diff*diff; + } + + // keep it if the error is lower + if( error < m_error ) + { + m_start = Vec3( + ( float )sources[0]->start/31.0f, + ( float )sources[1]->start/63.0f, + ( float )sources[2]->start/31.0f + ); + m_end = Vec3( + ( float )sources[0]->end/31.0f, + ( float )sources[1]->end/63.0f, + ( float )sources[2]->end/31.0f + ); + m_index = ( u8 )( 2*index ); + m_error = error; + } + } +} + +} // namespace squish diff --git a/thirdparty/squish/singlecolourfit.h b/thirdparty/squish/singlecolourfit.h new file mode 100644 index 0000000000..0388fda028 --- /dev/null +++ b/thirdparty/squish/singlecolourfit.h @@ -0,0 +1,58 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_SINGLECOLOURFIT_H +#define SQUISH_SINGLECOLOURFIT_H + +#include <squish.h> +#include "colourfit.h" + +namespace squish { + +class ColourSet; +struct SingleColourLookup; + +class SingleColourFit : public ColourFit +{ +public: + SingleColourFit( ColourSet const* colours, int flags ); + +private: + virtual void Compress3( void* block ); + virtual void Compress4( void* block ); + + void ComputeEndPoints( SingleColourLookup const* const* lookups ); + + u8 m_colour[3]; + Vec3 m_start; + Vec3 m_end; + u8 m_index; + int m_error; + int m_besterror; +}; + +} // namespace squish + +#endif // ndef SQUISH_SINGLECOLOURFIT_H diff --git a/thirdparty/squish/singlecolourlookup.inl b/thirdparty/squish/singlecolourlookup.inl new file mode 100644 index 0000000000..f1c95a1028 --- /dev/null +++ b/thirdparty/squish/singlecolourlookup.inl @@ -0,0 +1,1040 @@ + +static SingleColourLookup const lookup_5_3[] = +{ + { { { 0, 0, 0 }, { 0, 0, 0 } } }, + { { { 0, 0, 1 }, { 0, 0, 1 } } }, + { { { 0, 0, 2 }, { 0, 0, 2 } } }, + { { { 0, 0, 3 }, { 0, 1, 1 } } }, + { { { 0, 0, 4 }, { 0, 1, 0 } } }, + { { { 1, 0, 3 }, { 0, 1, 1 } } }, + { { { 1, 0, 2 }, { 0, 1, 2 } } }, + { { { 1, 0, 1 }, { 0, 2, 1 } } }, + { { { 1, 0, 0 }, { 0, 2, 0 } } }, + { { { 1, 0, 1 }, { 0, 2, 1 } } }, + { { { 1, 0, 2 }, { 0, 2, 2 } } }, + { { { 1, 0, 3 }, { 0, 3, 1 } } }, + { { { 1, 0, 4 }, { 0, 3, 0 } } }, + { { { 2, 0, 3 }, { 0, 3, 1 } } }, + { { { 2, 0, 2 }, { 0, 3, 2 } } }, + { { { 2, 0, 1 }, { 0, 4, 1 } } }, + { { { 2, 0, 0 }, { 0, 4, 0 } } }, + { { { 2, 0, 1 }, { 0, 4, 1 } } }, + { { { 2, 0, 2 }, { 0, 4, 2 } } }, + { { { 2, 0, 3 }, { 0, 5, 1 } } }, + { { { 2, 0, 4 }, { 0, 5, 0 } } }, + { { { 3, 0, 3 }, { 0, 5, 1 } } }, + { { { 3, 0, 2 }, { 0, 5, 2 } } }, + { { { 3, 0, 1 }, { 0, 6, 1 } } }, + { { { 3, 0, 0 }, { 0, 6, 0 } } }, + { { { 3, 0, 1 }, { 0, 6, 1 } } }, + { { { 3, 0, 2 }, { 0, 6, 2 } } }, + { { { 3, 0, 3 }, { 0, 7, 1 } } }, + { { { 3, 0, 4 }, { 0, 7, 0 } } }, + { { { 4, 0, 4 }, { 0, 7, 1 } } }, + { { { 4, 0, 3 }, { 0, 7, 2 } } }, + { { { 4, 0, 2 }, { 1, 7, 1 } } }, + { { { 4, 0, 1 }, { 1, 7, 0 } } }, + { { { 4, 0, 0 }, { 0, 8, 0 } } }, + { { { 4, 0, 1 }, { 0, 8, 1 } } }, + { { { 4, 0, 2 }, { 2, 7, 1 } } }, + { { { 4, 0, 3 }, { 2, 7, 0 } } }, + { { { 4, 0, 4 }, { 0, 9, 0 } } }, + { { { 5, 0, 3 }, { 0, 9, 1 } } }, + { { { 5, 0, 2 }, { 3, 7, 1 } } }, + { { { 5, 0, 1 }, { 3, 7, 0 } } }, + { { { 5, 0, 0 }, { 0, 10, 0 } } }, + { { { 5, 0, 1 }, { 0, 10, 1 } } }, + { { { 5, 0, 2 }, { 0, 10, 2 } } }, + { { { 5, 0, 3 }, { 0, 11, 1 } } }, + { { { 5, 0, 4 }, { 0, 11, 0 } } }, + { { { 6, 0, 3 }, { 0, 11, 1 } } }, + { { { 6, 0, 2 }, { 0, 11, 2 } } }, + { { { 6, 0, 1 }, { 0, 12, 1 } } }, + { { { 6, 0, 0 }, { 0, 12, 0 } } }, + { { { 6, 0, 1 }, { 0, 12, 1 } } }, + { { { 6, 0, 2 }, { 0, 12, 2 } } }, + { { { 6, 0, 3 }, { 0, 13, 1 } } }, + { { { 6, 0, 4 }, { 0, 13, 0 } } }, + { { { 7, 0, 3 }, { 0, 13, 1 } } }, + { { { 7, 0, 2 }, { 0, 13, 2 } } }, + { { { 7, 0, 1 }, { 0, 14, 1 } } }, + { { { 7, 0, 0 }, { 0, 14, 0 } } }, + { { { 7, 0, 1 }, { 0, 14, 1 } } }, + { { { 7, 0, 2 }, { 0, 14, 2 } } }, + { { { 7, 0, 3 }, { 0, 15, 1 } } }, + { { { 7, 0, 4 }, { 0, 15, 0 } } }, + { { { 8, 0, 4 }, { 0, 15, 1 } } }, + { { { 8, 0, 3 }, { 0, 15, 2 } } }, + { { { 8, 0, 2 }, { 1, 15, 1 } } }, + { { { 8, 0, 1 }, { 1, 15, 0 } } }, + { { { 8, 0, 0 }, { 0, 16, 0 } } }, + { { { 8, 0, 1 }, { 0, 16, 1 } } }, + { { { 8, 0, 2 }, { 2, 15, 1 } } }, + { { { 8, 0, 3 }, { 2, 15, 0 } } }, + { { { 8, 0, 4 }, { 0, 17, 0 } } }, + { { { 9, 0, 3 }, { 0, 17, 1 } } }, + { { { 9, 0, 2 }, { 3, 15, 1 } } }, + { { { 9, 0, 1 }, { 3, 15, 0 } } }, + { { { 9, 0, 0 }, { 0, 18, 0 } } }, + { { { 9, 0, 1 }, { 0, 18, 1 } } }, + { { { 9, 0, 2 }, { 0, 18, 2 } } }, + { { { 9, 0, 3 }, { 0, 19, 1 } } }, + { { { 9, 0, 4 }, { 0, 19, 0 } } }, + { { { 10, 0, 3 }, { 0, 19, 1 } } }, + { { { 10, 0, 2 }, { 0, 19, 2 } } }, + { { { 10, 0, 1 }, { 0, 20, 1 } } }, + { { { 10, 0, 0 }, { 0, 20, 0 } } }, + { { { 10, 0, 1 }, { 0, 20, 1 } } }, + { { { 10, 0, 2 }, { 0, 20, 2 } } }, + { { { 10, 0, 3 }, { 0, 21, 1 } } }, + { { { 10, 0, 4 }, { 0, 21, 0 } } }, + { { { 11, 0, 3 }, { 0, 21, 1 } } }, + { { { 11, 0, 2 }, { 0, 21, 2 } } }, + { { { 11, 0, 1 }, { 0, 22, 1 } } }, + { { { 11, 0, 0 }, { 0, 22, 0 } } }, + { { { 11, 0, 1 }, { 0, 22, 1 } } }, + { { { 11, 0, 2 }, { 0, 22, 2 } } }, + { { { 11, 0, 3 }, { 0, 23, 1 } } }, + { { { 11, 0, 4 }, { 0, 23, 0 } } }, + { { { 12, 0, 4 }, { 0, 23, 1 } } }, + { { { 12, 0, 3 }, { 0, 23, 2 } } }, + { { { 12, 0, 2 }, { 1, 23, 1 } } }, + { { { 12, 0, 1 }, { 1, 23, 0 } } }, + { { { 12, 0, 0 }, { 0, 24, 0 } } }, + { { { 12, 0, 1 }, { 0, 24, 1 } } }, + { { { 12, 0, 2 }, { 2, 23, 1 } } }, + { { { 12, 0, 3 }, { 2, 23, 0 } } }, + { { { 12, 0, 4 }, { 0, 25, 0 } } }, + { { { 13, 0, 3 }, { 0, 25, 1 } } }, + { { { 13, 0, 2 }, { 3, 23, 1 } } }, + { { { 13, 0, 1 }, { 3, 23, 0 } } }, + { { { 13, 0, 0 }, { 0, 26, 0 } } }, + { { { 13, 0, 1 }, { 0, 26, 1 } } }, + { { { 13, 0, 2 }, { 0, 26, 2 } } }, + { { { 13, 0, 3 }, { 0, 27, 1 } } }, + { { { 13, 0, 4 }, { 0, 27, 0 } } }, + { { { 14, 0, 3 }, { 0, 27, 1 } } }, + { { { 14, 0, 2 }, { 0, 27, 2 } } }, + { { { 14, 0, 1 }, { 0, 28, 1 } } }, + { { { 14, 0, 0 }, { 0, 28, 0 } } }, + { { { 14, 0, 1 }, { 0, 28, 1 } } }, + { { { 14, 0, 2 }, { 0, 28, 2 } } }, + { { { 14, 0, 3 }, { 0, 29, 1 } } }, + { { { 14, 0, 4 }, { 0, 29, 0 } } }, + { { { 15, 0, 3 }, { 0, 29, 1 } } }, + { { { 15, 0, 2 }, { 0, 29, 2 } } }, + { { { 15, 0, 1 }, { 0, 30, 1 } } }, + { { { 15, 0, 0 }, { 0, 30, 0 } } }, + { { { 15, 0, 1 }, { 0, 30, 1 } } }, + { { { 15, 0, 2 }, { 0, 30, 2 } } }, + { { { 15, 0, 3 }, { 0, 31, 1 } } }, + { { { 15, 0, 4 }, { 0, 31, 0 } } }, + { { { 16, 0, 4 }, { 0, 31, 1 } } }, + { { { 16, 0, 3 }, { 0, 31, 2 } } }, + { { { 16, 0, 2 }, { 1, 31, 1 } } }, + { { { 16, 0, 1 }, { 1, 31, 0 } } }, + { { { 16, 0, 0 }, { 4, 28, 0 } } }, + { { { 16, 0, 1 }, { 4, 28, 1 } } }, + { { { 16, 0, 2 }, { 2, 31, 1 } } }, + { { { 16, 0, 3 }, { 2, 31, 0 } } }, + { { { 16, 0, 4 }, { 4, 29, 0 } } }, + { { { 17, 0, 3 }, { 4, 29, 1 } } }, + { { { 17, 0, 2 }, { 3, 31, 1 } } }, + { { { 17, 0, 1 }, { 3, 31, 0 } } }, + { { { 17, 0, 0 }, { 4, 30, 0 } } }, + { { { 17, 0, 1 }, { 4, 30, 1 } } }, + { { { 17, 0, 2 }, { 4, 30, 2 } } }, + { { { 17, 0, 3 }, { 4, 31, 1 } } }, + { { { 17, 0, 4 }, { 4, 31, 0 } } }, + { { { 18, 0, 3 }, { 4, 31, 1 } } }, + { { { 18, 0, 2 }, { 4, 31, 2 } } }, + { { { 18, 0, 1 }, { 5, 31, 1 } } }, + { { { 18, 0, 0 }, { 5, 31, 0 } } }, + { { { 18, 0, 1 }, { 5, 31, 1 } } }, + { { { 18, 0, 2 }, { 5, 31, 2 } } }, + { { { 18, 0, 3 }, { 6, 31, 1 } } }, + { { { 18, 0, 4 }, { 6, 31, 0 } } }, + { { { 19, 0, 3 }, { 6, 31, 1 } } }, + { { { 19, 0, 2 }, { 6, 31, 2 } } }, + { { { 19, 0, 1 }, { 7, 31, 1 } } }, + { { { 19, 0, 0 }, { 7, 31, 0 } } }, + { { { 19, 0, 1 }, { 7, 31, 1 } } }, + { { { 19, 0, 2 }, { 7, 31, 2 } } }, + { { { 19, 0, 3 }, { 8, 31, 1 } } }, + { { { 19, 0, 4 }, { 8, 31, 0 } } }, + { { { 20, 0, 4 }, { 8, 31, 1 } } }, + { { { 20, 0, 3 }, { 8, 31, 2 } } }, + { { { 20, 0, 2 }, { 9, 31, 1 } } }, + { { { 20, 0, 1 }, { 9, 31, 0 } } }, + { { { 20, 0, 0 }, { 12, 28, 0 } } }, + { { { 20, 0, 1 }, { 12, 28, 1 } } }, + { { { 20, 0, 2 }, { 10, 31, 1 } } }, + { { { 20, 0, 3 }, { 10, 31, 0 } } }, + { { { 20, 0, 4 }, { 12, 29, 0 } } }, + { { { 21, 0, 3 }, { 12, 29, 1 } } }, + { { { 21, 0, 2 }, { 11, 31, 1 } } }, + { { { 21, 0, 1 }, { 11, 31, 0 } } }, + { { { 21, 0, 0 }, { 12, 30, 0 } } }, + { { { 21, 0, 1 }, { 12, 30, 1 } } }, + { { { 21, 0, 2 }, { 12, 30, 2 } } }, + { { { 21, 0, 3 }, { 12, 31, 1 } } }, + { { { 21, 0, 4 }, { 12, 31, 0 } } }, + { { { 22, 0, 3 }, { 12, 31, 1 } } }, + { { { 22, 0, 2 }, { 12, 31, 2 } } }, + { { { 22, 0, 1 }, { 13, 31, 1 } } }, + { { { 22, 0, 0 }, { 13, 31, 0 } } }, + { { { 22, 0, 1 }, { 13, 31, 1 } } }, + { { { 22, 0, 2 }, { 13, 31, 2 } } }, + { { { 22, 0, 3 }, { 14, 31, 1 } } }, + { { { 22, 0, 4 }, { 14, 31, 0 } } }, + { { { 23, 0, 3 }, { 14, 31, 1 } } }, + { { { 23, 0, 2 }, { 14, 31, 2 } } }, + { { { 23, 0, 1 }, { 15, 31, 1 } } }, + { { { 23, 0, 0 }, { 15, 31, 0 } } }, + { { { 23, 0, 1 }, { 15, 31, 1 } } }, + { { { 23, 0, 2 }, { 15, 31, 2 } } }, + { { { 23, 0, 3 }, { 16, 31, 1 } } }, + { { { 23, 0, 4 }, { 16, 31, 0 } } }, + { { { 24, 0, 4 }, { 16, 31, 1 } } }, + { { { 24, 0, 3 }, { 16, 31, 2 } } }, + { { { 24, 0, 2 }, { 17, 31, 1 } } }, + { { { 24, 0, 1 }, { 17, 31, 0 } } }, + { { { 24, 0, 0 }, { 20, 28, 0 } } }, + { { { 24, 0, 1 }, { 20, 28, 1 } } }, + { { { 24, 0, 2 }, { 18, 31, 1 } } }, + { { { 24, 0, 3 }, { 18, 31, 0 } } }, + { { { 24, 0, 4 }, { 20, 29, 0 } } }, + { { { 25, 0, 3 }, { 20, 29, 1 } } }, + { { { 25, 0, 2 }, { 19, 31, 1 } } }, + { { { 25, 0, 1 }, { 19, 31, 0 } } }, + { { { 25, 0, 0 }, { 20, 30, 0 } } }, + { { { 25, 0, 1 }, { 20, 30, 1 } } }, + { { { 25, 0, 2 }, { 20, 30, 2 } } }, + { { { 25, 0, 3 }, { 20, 31, 1 } } }, + { { { 25, 0, 4 }, { 20, 31, 0 } } }, + { { { 26, 0, 3 }, { 20, 31, 1 } } }, + { { { 26, 0, 2 }, { 20, 31, 2 } } }, + { { { 26, 0, 1 }, { 21, 31, 1 } } }, + { { { 26, 0, 0 }, { 21, 31, 0 } } }, + { { { 26, 0, 1 }, { 21, 31, 1 } } }, + { { { 26, 0, 2 }, { 21, 31, 2 } } }, + { { { 26, 0, 3 }, { 22, 31, 1 } } }, + { { { 26, 0, 4 }, { 22, 31, 0 } } }, + { { { 27, 0, 3 }, { 22, 31, 1 } } }, + { { { 27, 0, 2 }, { 22, 31, 2 } } }, + { { { 27, 0, 1 }, { 23, 31, 1 } } }, + { { { 27, 0, 0 }, { 23, 31, 0 } } }, + { { { 27, 0, 1 }, { 23, 31, 1 } } }, + { { { 27, 0, 2 }, { 23, 31, 2 } } }, + { { { 27, 0, 3 }, { 24, 31, 1 } } }, + { { { 27, 0, 4 }, { 24, 31, 0 } } }, + { { { 28, 0, 4 }, { 24, 31, 1 } } }, + { { { 28, 0, 3 }, { 24, 31, 2 } } }, + { { { 28, 0, 2 }, { 25, 31, 1 } } }, + { { { 28, 0, 1 }, { 25, 31, 0 } } }, + { { { 28, 0, 0 }, { 28, 28, 0 } } }, + { { { 28, 0, 1 }, { 28, 28, 1 } } }, + { { { 28, 0, 2 }, { 26, 31, 1 } } }, + { { { 28, 0, 3 }, { 26, 31, 0 } } }, + { { { 28, 0, 4 }, { 28, 29, 0 } } }, + { { { 29, 0, 3 }, { 28, 29, 1 } } }, + { { { 29, 0, 2 }, { 27, 31, 1 } } }, + { { { 29, 0, 1 }, { 27, 31, 0 } } }, + { { { 29, 0, 0 }, { 28, 30, 0 } } }, + { { { 29, 0, 1 }, { 28, 30, 1 } } }, + { { { 29, 0, 2 }, { 28, 30, 2 } } }, + { { { 29, 0, 3 }, { 28, 31, 1 } } }, + { { { 29, 0, 4 }, { 28, 31, 0 } } }, + { { { 30, 0, 3 }, { 28, 31, 1 } } }, + { { { 30, 0, 2 }, { 28, 31, 2 } } }, + { { { 30, 0, 1 }, { 29, 31, 1 } } }, + { { { 30, 0, 0 }, { 29, 31, 0 } } }, + { { { 30, 0, 1 }, { 29, 31, 1 } } }, + { { { 30, 0, 2 }, { 29, 31, 2 } } }, + { { { 30, 0, 3 }, { 30, 31, 1 } } }, + { { { 30, 0, 4 }, { 30, 31, 0 } } }, + { { { 31, 0, 3 }, { 30, 31, 1 } } }, + { { { 31, 0, 2 }, { 30, 31, 2 } } }, + { { { 31, 0, 1 }, { 31, 31, 1 } } }, + { { { 31, 0, 0 }, { 31, 31, 0 } } } +}; + +static SingleColourLookup const lookup_6_3[] = +{ + { { { 0, 0, 0 }, { 0, 0, 0 } } }, + { { { 0, 0, 1 }, { 0, 1, 1 } } }, + { { { 0, 0, 2 }, { 0, 1, 0 } } }, + { { { 1, 0, 1 }, { 0, 2, 1 } } }, + { { { 1, 0, 0 }, { 0, 2, 0 } } }, + { { { 1, 0, 1 }, { 0, 3, 1 } } }, + { { { 1, 0, 2 }, { 0, 3, 0 } } }, + { { { 2, 0, 1 }, { 0, 4, 1 } } }, + { { { 2, 0, 0 }, { 0, 4, 0 } } }, + { { { 2, 0, 1 }, { 0, 5, 1 } } }, + { { { 2, 0, 2 }, { 0, 5, 0 } } }, + { { { 3, 0, 1 }, { 0, 6, 1 } } }, + { { { 3, 0, 0 }, { 0, 6, 0 } } }, + { { { 3, 0, 1 }, { 0, 7, 1 } } }, + { { { 3, 0, 2 }, { 0, 7, 0 } } }, + { { { 4, 0, 1 }, { 0, 8, 1 } } }, + { { { 4, 0, 0 }, { 0, 8, 0 } } }, + { { { 4, 0, 1 }, { 0, 9, 1 } } }, + { { { 4, 0, 2 }, { 0, 9, 0 } } }, + { { { 5, 0, 1 }, { 0, 10, 1 } } }, + { { { 5, 0, 0 }, { 0, 10, 0 } } }, + { { { 5, 0, 1 }, { 0, 11, 1 } } }, + { { { 5, 0, 2 }, { 0, 11, 0 } } }, + { { { 6, 0, 1 }, { 0, 12, 1 } } }, + { { { 6, 0, 0 }, { 0, 12, 0 } } }, + { { { 6, 0, 1 }, { 0, 13, 1 } } }, + { { { 6, 0, 2 }, { 0, 13, 0 } } }, + { { { 7, 0, 1 }, { 0, 14, 1 } } }, + { { { 7, 0, 0 }, { 0, 14, 0 } } }, + { { { 7, 0, 1 }, { 0, 15, 1 } } }, + { { { 7, 0, 2 }, { 0, 15, 0 } } }, + { { { 8, 0, 1 }, { 0, 16, 1 } } }, + { { { 8, 0, 0 }, { 0, 16, 0 } } }, + { { { 8, 0, 1 }, { 0, 17, 1 } } }, + { { { 8, 0, 2 }, { 0, 17, 0 } } }, + { { { 9, 0, 1 }, { 0, 18, 1 } } }, + { { { 9, 0, 0 }, { 0, 18, 0 } } }, + { { { 9, 0, 1 }, { 0, 19, 1 } } }, + { { { 9, 0, 2 }, { 0, 19, 0 } } }, + { { { 10, 0, 1 }, { 0, 20, 1 } } }, + { { { 10, 0, 0 }, { 0, 20, 0 } } }, + { { { 10, 0, 1 }, { 0, 21, 1 } } }, + { { { 10, 0, 2 }, { 0, 21, 0 } } }, + { { { 11, 0, 1 }, { 0, 22, 1 } } }, + { { { 11, 0, 0 }, { 0, 22, 0 } } }, + { { { 11, 0, 1 }, { 0, 23, 1 } } }, + { { { 11, 0, 2 }, { 0, 23, 0 } } }, + { { { 12, 0, 1 }, { 0, 24, 1 } } }, + { { { 12, 0, 0 }, { 0, 24, 0 } } }, + { { { 12, 0, 1 }, { 0, 25, 1 } } }, + { { { 12, 0, 2 }, { 0, 25, 0 } } }, + { { { 13, 0, 1 }, { 0, 26, 1 } } }, + { { { 13, 0, 0 }, { 0, 26, 0 } } }, + { { { 13, 0, 1 }, { 0, 27, 1 } } }, + { { { 13, 0, 2 }, { 0, 27, 0 } } }, + { { { 14, 0, 1 }, { 0, 28, 1 } } }, + { { { 14, 0, 0 }, { 0, 28, 0 } } }, + { { { 14, 0, 1 }, { 0, 29, 1 } } }, + { { { 14, 0, 2 }, { 0, 29, 0 } } }, + { { { 15, 0, 1 }, { 0, 30, 1 } } }, + { { { 15, 0, 0 }, { 0, 30, 0 } } }, + { { { 15, 0, 1 }, { 0, 31, 1 } } }, + { { { 15, 0, 2 }, { 0, 31, 0 } } }, + { { { 16, 0, 2 }, { 1, 31, 1 } } }, + { { { 16, 0, 1 }, { 1, 31, 0 } } }, + { { { 16, 0, 0 }, { 0, 32, 0 } } }, + { { { 16, 0, 1 }, { 2, 31, 0 } } }, + { { { 16, 0, 2 }, { 0, 33, 0 } } }, + { { { 17, 0, 1 }, { 3, 31, 0 } } }, + { { { 17, 0, 0 }, { 0, 34, 0 } } }, + { { { 17, 0, 1 }, { 4, 31, 0 } } }, + { { { 17, 0, 2 }, { 0, 35, 0 } } }, + { { { 18, 0, 1 }, { 5, 31, 0 } } }, + { { { 18, 0, 0 }, { 0, 36, 0 } } }, + { { { 18, 0, 1 }, { 6, 31, 0 } } }, + { { { 18, 0, 2 }, { 0, 37, 0 } } }, + { { { 19, 0, 1 }, { 7, 31, 0 } } }, + { { { 19, 0, 0 }, { 0, 38, 0 } } }, + { { { 19, 0, 1 }, { 8, 31, 0 } } }, + { { { 19, 0, 2 }, { 0, 39, 0 } } }, + { { { 20, 0, 1 }, { 9, 31, 0 } } }, + { { { 20, 0, 0 }, { 0, 40, 0 } } }, + { { { 20, 0, 1 }, { 10, 31, 0 } } }, + { { { 20, 0, 2 }, { 0, 41, 0 } } }, + { { { 21, 0, 1 }, { 11, 31, 0 } } }, + { { { 21, 0, 0 }, { 0, 42, 0 } } }, + { { { 21, 0, 1 }, { 12, 31, 0 } } }, + { { { 21, 0, 2 }, { 0, 43, 0 } } }, + { { { 22, 0, 1 }, { 13, 31, 0 } } }, + { { { 22, 0, 0 }, { 0, 44, 0 } } }, + { { { 22, 0, 1 }, { 14, 31, 0 } } }, + { { { 22, 0, 2 }, { 0, 45, 0 } } }, + { { { 23, 0, 1 }, { 15, 31, 0 } } }, + { { { 23, 0, 0 }, { 0, 46, 0 } } }, + { { { 23, 0, 1 }, { 0, 47, 1 } } }, + { { { 23, 0, 2 }, { 0, 47, 0 } } }, + { { { 24, 0, 1 }, { 0, 48, 1 } } }, + { { { 24, 0, 0 }, { 0, 48, 0 } } }, + { { { 24, 0, 1 }, { 0, 49, 1 } } }, + { { { 24, 0, 2 }, { 0, 49, 0 } } }, + { { { 25, 0, 1 }, { 0, 50, 1 } } }, + { { { 25, 0, 0 }, { 0, 50, 0 } } }, + { { { 25, 0, 1 }, { 0, 51, 1 } } }, + { { { 25, 0, 2 }, { 0, 51, 0 } } }, + { { { 26, 0, 1 }, { 0, 52, 1 } } }, + { { { 26, 0, 0 }, { 0, 52, 0 } } }, + { { { 26, 0, 1 }, { 0, 53, 1 } } }, + { { { 26, 0, 2 }, { 0, 53, 0 } } }, + { { { 27, 0, 1 }, { 0, 54, 1 } } }, + { { { 27, 0, 0 }, { 0, 54, 0 } } }, + { { { 27, 0, 1 }, { 0, 55, 1 } } }, + { { { 27, 0, 2 }, { 0, 55, 0 } } }, + { { { 28, 0, 1 }, { 0, 56, 1 } } }, + { { { 28, 0, 0 }, { 0, 56, 0 } } }, + { { { 28, 0, 1 }, { 0, 57, 1 } } }, + { { { 28, 0, 2 }, { 0, 57, 0 } } }, + { { { 29, 0, 1 }, { 0, 58, 1 } } }, + { { { 29, 0, 0 }, { 0, 58, 0 } } }, + { { { 29, 0, 1 }, { 0, 59, 1 } } }, + { { { 29, 0, 2 }, { 0, 59, 0 } } }, + { { { 30, 0, 1 }, { 0, 60, 1 } } }, + { { { 30, 0, 0 }, { 0, 60, 0 } } }, + { { { 30, 0, 1 }, { 0, 61, 1 } } }, + { { { 30, 0, 2 }, { 0, 61, 0 } } }, + { { { 31, 0, 1 }, { 0, 62, 1 } } }, + { { { 31, 0, 0 }, { 0, 62, 0 } } }, + { { { 31, 0, 1 }, { 0, 63, 1 } } }, + { { { 31, 0, 2 }, { 0, 63, 0 } } }, + { { { 32, 0, 2 }, { 1, 63, 1 } } }, + { { { 32, 0, 1 }, { 1, 63, 0 } } }, + { { { 32, 0, 0 }, { 16, 48, 0 } } }, + { { { 32, 0, 1 }, { 2, 63, 0 } } }, + { { { 32, 0, 2 }, { 16, 49, 0 } } }, + { { { 33, 0, 1 }, { 3, 63, 0 } } }, + { { { 33, 0, 0 }, { 16, 50, 0 } } }, + { { { 33, 0, 1 }, { 4, 63, 0 } } }, + { { { 33, 0, 2 }, { 16, 51, 0 } } }, + { { { 34, 0, 1 }, { 5, 63, 0 } } }, + { { { 34, 0, 0 }, { 16, 52, 0 } } }, + { { { 34, 0, 1 }, { 6, 63, 0 } } }, + { { { 34, 0, 2 }, { 16, 53, 0 } } }, + { { { 35, 0, 1 }, { 7, 63, 0 } } }, + { { { 35, 0, 0 }, { 16, 54, 0 } } }, + { { { 35, 0, 1 }, { 8, 63, 0 } } }, + { { { 35, 0, 2 }, { 16, 55, 0 } } }, + { { { 36, 0, 1 }, { 9, 63, 0 } } }, + { { { 36, 0, 0 }, { 16, 56, 0 } } }, + { { { 36, 0, 1 }, { 10, 63, 0 } } }, + { { { 36, 0, 2 }, { 16, 57, 0 } } }, + { { { 37, 0, 1 }, { 11, 63, 0 } } }, + { { { 37, 0, 0 }, { 16, 58, 0 } } }, + { { { 37, 0, 1 }, { 12, 63, 0 } } }, + { { { 37, 0, 2 }, { 16, 59, 0 } } }, + { { { 38, 0, 1 }, { 13, 63, 0 } } }, + { { { 38, 0, 0 }, { 16, 60, 0 } } }, + { { { 38, 0, 1 }, { 14, 63, 0 } } }, + { { { 38, 0, 2 }, { 16, 61, 0 } } }, + { { { 39, 0, 1 }, { 15, 63, 0 } } }, + { { { 39, 0, 0 }, { 16, 62, 0 } } }, + { { { 39, 0, 1 }, { 16, 63, 1 } } }, + { { { 39, 0, 2 }, { 16, 63, 0 } } }, + { { { 40, 0, 1 }, { 17, 63, 1 } } }, + { { { 40, 0, 0 }, { 17, 63, 0 } } }, + { { { 40, 0, 1 }, { 18, 63, 1 } } }, + { { { 40, 0, 2 }, { 18, 63, 0 } } }, + { { { 41, 0, 1 }, { 19, 63, 1 } } }, + { { { 41, 0, 0 }, { 19, 63, 0 } } }, + { { { 41, 0, 1 }, { 20, 63, 1 } } }, + { { { 41, 0, 2 }, { 20, 63, 0 } } }, + { { { 42, 0, 1 }, { 21, 63, 1 } } }, + { { { 42, 0, 0 }, { 21, 63, 0 } } }, + { { { 42, 0, 1 }, { 22, 63, 1 } } }, + { { { 42, 0, 2 }, { 22, 63, 0 } } }, + { { { 43, 0, 1 }, { 23, 63, 1 } } }, + { { { 43, 0, 0 }, { 23, 63, 0 } } }, + { { { 43, 0, 1 }, { 24, 63, 1 } } }, + { { { 43, 0, 2 }, { 24, 63, 0 } } }, + { { { 44, 0, 1 }, { 25, 63, 1 } } }, + { { { 44, 0, 0 }, { 25, 63, 0 } } }, + { { { 44, 0, 1 }, { 26, 63, 1 } } }, + { { { 44, 0, 2 }, { 26, 63, 0 } } }, + { { { 45, 0, 1 }, { 27, 63, 1 } } }, + { { { 45, 0, 0 }, { 27, 63, 0 } } }, + { { { 45, 0, 1 }, { 28, 63, 1 } } }, + { { { 45, 0, 2 }, { 28, 63, 0 } } }, + { { { 46, 0, 1 }, { 29, 63, 1 } } }, + { { { 46, 0, 0 }, { 29, 63, 0 } } }, + { { { 46, 0, 1 }, { 30, 63, 1 } } }, + { { { 46, 0, 2 }, { 30, 63, 0 } } }, + { { { 47, 0, 1 }, { 31, 63, 1 } } }, + { { { 47, 0, 0 }, { 31, 63, 0 } } }, + { { { 47, 0, 1 }, { 32, 63, 1 } } }, + { { { 47, 0, 2 }, { 32, 63, 0 } } }, + { { { 48, 0, 2 }, { 33, 63, 1 } } }, + { { { 48, 0, 1 }, { 33, 63, 0 } } }, + { { { 48, 0, 0 }, { 48, 48, 0 } } }, + { { { 48, 0, 1 }, { 34, 63, 0 } } }, + { { { 48, 0, 2 }, { 48, 49, 0 } } }, + { { { 49, 0, 1 }, { 35, 63, 0 } } }, + { { { 49, 0, 0 }, { 48, 50, 0 } } }, + { { { 49, 0, 1 }, { 36, 63, 0 } } }, + { { { 49, 0, 2 }, { 48, 51, 0 } } }, + { { { 50, 0, 1 }, { 37, 63, 0 } } }, + { { { 50, 0, 0 }, { 48, 52, 0 } } }, + { { { 50, 0, 1 }, { 38, 63, 0 } } }, + { { { 50, 0, 2 }, { 48, 53, 0 } } }, + { { { 51, 0, 1 }, { 39, 63, 0 } } }, + { { { 51, 0, 0 }, { 48, 54, 0 } } }, + { { { 51, 0, 1 }, { 40, 63, 0 } } }, + { { { 51, 0, 2 }, { 48, 55, 0 } } }, + { { { 52, 0, 1 }, { 41, 63, 0 } } }, + { { { 52, 0, 0 }, { 48, 56, 0 } } }, + { { { 52, 0, 1 }, { 42, 63, 0 } } }, + { { { 52, 0, 2 }, { 48, 57, 0 } } }, + { { { 53, 0, 1 }, { 43, 63, 0 } } }, + { { { 53, 0, 0 }, { 48, 58, 0 } } }, + { { { 53, 0, 1 }, { 44, 63, 0 } } }, + { { { 53, 0, 2 }, { 48, 59, 0 } } }, + { { { 54, 0, 1 }, { 45, 63, 0 } } }, + { { { 54, 0, 0 }, { 48, 60, 0 } } }, + { { { 54, 0, 1 }, { 46, 63, 0 } } }, + { { { 54, 0, 2 }, { 48, 61, 0 } } }, + { { { 55, 0, 1 }, { 47, 63, 0 } } }, + { { { 55, 0, 0 }, { 48, 62, 0 } } }, + { { { 55, 0, 1 }, { 48, 63, 1 } } }, + { { { 55, 0, 2 }, { 48, 63, 0 } } }, + { { { 56, 0, 1 }, { 49, 63, 1 } } }, + { { { 56, 0, 0 }, { 49, 63, 0 } } }, + { { { 56, 0, 1 }, { 50, 63, 1 } } }, + { { { 56, 0, 2 }, { 50, 63, 0 } } }, + { { { 57, 0, 1 }, { 51, 63, 1 } } }, + { { { 57, 0, 0 }, { 51, 63, 0 } } }, + { { { 57, 0, 1 }, { 52, 63, 1 } } }, + { { { 57, 0, 2 }, { 52, 63, 0 } } }, + { { { 58, 0, 1 }, { 53, 63, 1 } } }, + { { { 58, 0, 0 }, { 53, 63, 0 } } }, + { { { 58, 0, 1 }, { 54, 63, 1 } } }, + { { { 58, 0, 2 }, { 54, 63, 0 } } }, + { { { 59, 0, 1 }, { 55, 63, 1 } } }, + { { { 59, 0, 0 }, { 55, 63, 0 } } }, + { { { 59, 0, 1 }, { 56, 63, 1 } } }, + { { { 59, 0, 2 }, { 56, 63, 0 } } }, + { { { 60, 0, 1 }, { 57, 63, 1 } } }, + { { { 60, 0, 0 }, { 57, 63, 0 } } }, + { { { 60, 0, 1 }, { 58, 63, 1 } } }, + { { { 60, 0, 2 }, { 58, 63, 0 } } }, + { { { 61, 0, 1 }, { 59, 63, 1 } } }, + { { { 61, 0, 0 }, { 59, 63, 0 } } }, + { { { 61, 0, 1 }, { 60, 63, 1 } } }, + { { { 61, 0, 2 }, { 60, 63, 0 } } }, + { { { 62, 0, 1 }, { 61, 63, 1 } } }, + { { { 62, 0, 0 }, { 61, 63, 0 } } }, + { { { 62, 0, 1 }, { 62, 63, 1 } } }, + { { { 62, 0, 2 }, { 62, 63, 0 } } }, + { { { 63, 0, 1 }, { 63, 63, 1 } } }, + { { { 63, 0, 0 }, { 63, 63, 0 } } } +}; + +static SingleColourLookup const lookup_5_4[] = +{ + { { { 0, 0, 0 }, { 0, 0, 0 } } }, + { { { 0, 0, 1 }, { 0, 1, 1 } } }, + { { { 0, 0, 2 }, { 0, 1, 0 } } }, + { { { 0, 0, 3 }, { 0, 1, 1 } } }, + { { { 0, 0, 4 }, { 0, 2, 1 } } }, + { { { 1, 0, 3 }, { 0, 2, 0 } } }, + { { { 1, 0, 2 }, { 0, 2, 1 } } }, + { { { 1, 0, 1 }, { 0, 3, 1 } } }, + { { { 1, 0, 0 }, { 0, 3, 0 } } }, + { { { 1, 0, 1 }, { 1, 2, 1 } } }, + { { { 1, 0, 2 }, { 1, 2, 0 } } }, + { { { 1, 0, 3 }, { 0, 4, 0 } } }, + { { { 1, 0, 4 }, { 0, 5, 1 } } }, + { { { 2, 0, 3 }, { 0, 5, 0 } } }, + { { { 2, 0, 2 }, { 0, 5, 1 } } }, + { { { 2, 0, 1 }, { 0, 6, 1 } } }, + { { { 2, 0, 0 }, { 0, 6, 0 } } }, + { { { 2, 0, 1 }, { 2, 3, 1 } } }, + { { { 2, 0, 2 }, { 2, 3, 0 } } }, + { { { 2, 0, 3 }, { 0, 7, 0 } } }, + { { { 2, 0, 4 }, { 1, 6, 1 } } }, + { { { 3, 0, 3 }, { 1, 6, 0 } } }, + { { { 3, 0, 2 }, { 0, 8, 0 } } }, + { { { 3, 0, 1 }, { 0, 9, 1 } } }, + { { { 3, 0, 0 }, { 0, 9, 0 } } }, + { { { 3, 0, 1 }, { 0, 9, 1 } } }, + { { { 3, 0, 2 }, { 0, 10, 1 } } }, + { { { 3, 0, 3 }, { 0, 10, 0 } } }, + { { { 3, 0, 4 }, { 2, 7, 1 } } }, + { { { 4, 0, 4 }, { 2, 7, 0 } } }, + { { { 4, 0, 3 }, { 0, 11, 0 } } }, + { { { 4, 0, 2 }, { 1, 10, 1 } } }, + { { { 4, 0, 1 }, { 1, 10, 0 } } }, + { { { 4, 0, 0 }, { 0, 12, 0 } } }, + { { { 4, 0, 1 }, { 0, 13, 1 } } }, + { { { 4, 0, 2 }, { 0, 13, 0 } } }, + { { { 4, 0, 3 }, { 0, 13, 1 } } }, + { { { 4, 0, 4 }, { 0, 14, 1 } } }, + { { { 5, 0, 3 }, { 0, 14, 0 } } }, + { { { 5, 0, 2 }, { 2, 11, 1 } } }, + { { { 5, 0, 1 }, { 2, 11, 0 } } }, + { { { 5, 0, 0 }, { 0, 15, 0 } } }, + { { { 5, 0, 1 }, { 1, 14, 1 } } }, + { { { 5, 0, 2 }, { 1, 14, 0 } } }, + { { { 5, 0, 3 }, { 0, 16, 0 } } }, + { { { 5, 0, 4 }, { 0, 17, 1 } } }, + { { { 6, 0, 3 }, { 0, 17, 0 } } }, + { { { 6, 0, 2 }, { 0, 17, 1 } } }, + { { { 6, 0, 1 }, { 0, 18, 1 } } }, + { { { 6, 0, 0 }, { 0, 18, 0 } } }, + { { { 6, 0, 1 }, { 2, 15, 1 } } }, + { { { 6, 0, 2 }, { 2, 15, 0 } } }, + { { { 6, 0, 3 }, { 0, 19, 0 } } }, + { { { 6, 0, 4 }, { 1, 18, 1 } } }, + { { { 7, 0, 3 }, { 1, 18, 0 } } }, + { { { 7, 0, 2 }, { 0, 20, 0 } } }, + { { { 7, 0, 1 }, { 0, 21, 1 } } }, + { { { 7, 0, 0 }, { 0, 21, 0 } } }, + { { { 7, 0, 1 }, { 0, 21, 1 } } }, + { { { 7, 0, 2 }, { 0, 22, 1 } } }, + { { { 7, 0, 3 }, { 0, 22, 0 } } }, + { { { 7, 0, 4 }, { 2, 19, 1 } } }, + { { { 8, 0, 4 }, { 2, 19, 0 } } }, + { { { 8, 0, 3 }, { 0, 23, 0 } } }, + { { { 8, 0, 2 }, { 1, 22, 1 } } }, + { { { 8, 0, 1 }, { 1, 22, 0 } } }, + { { { 8, 0, 0 }, { 0, 24, 0 } } }, + { { { 8, 0, 1 }, { 0, 25, 1 } } }, + { { { 8, 0, 2 }, { 0, 25, 0 } } }, + { { { 8, 0, 3 }, { 0, 25, 1 } } }, + { { { 8, 0, 4 }, { 0, 26, 1 } } }, + { { { 9, 0, 3 }, { 0, 26, 0 } } }, + { { { 9, 0, 2 }, { 2, 23, 1 } } }, + { { { 9, 0, 1 }, { 2, 23, 0 } } }, + { { { 9, 0, 0 }, { 0, 27, 0 } } }, + { { { 9, 0, 1 }, { 1, 26, 1 } } }, + { { { 9, 0, 2 }, { 1, 26, 0 } } }, + { { { 9, 0, 3 }, { 0, 28, 0 } } }, + { { { 9, 0, 4 }, { 0, 29, 1 } } }, + { { { 10, 0, 3 }, { 0, 29, 0 } } }, + { { { 10, 0, 2 }, { 0, 29, 1 } } }, + { { { 10, 0, 1 }, { 0, 30, 1 } } }, + { { { 10, 0, 0 }, { 0, 30, 0 } } }, + { { { 10, 0, 1 }, { 2, 27, 1 } } }, + { { { 10, 0, 2 }, { 2, 27, 0 } } }, + { { { 10, 0, 3 }, { 0, 31, 0 } } }, + { { { 10, 0, 4 }, { 1, 30, 1 } } }, + { { { 11, 0, 3 }, { 1, 30, 0 } } }, + { { { 11, 0, 2 }, { 4, 24, 0 } } }, + { { { 11, 0, 1 }, { 1, 31, 1 } } }, + { { { 11, 0, 0 }, { 1, 31, 0 } } }, + { { { 11, 0, 1 }, { 1, 31, 1 } } }, + { { { 11, 0, 2 }, { 2, 30, 1 } } }, + { { { 11, 0, 3 }, { 2, 30, 0 } } }, + { { { 11, 0, 4 }, { 2, 31, 1 } } }, + { { { 12, 0, 4 }, { 2, 31, 0 } } }, + { { { 12, 0, 3 }, { 4, 27, 0 } } }, + { { { 12, 0, 2 }, { 3, 30, 1 } } }, + { { { 12, 0, 1 }, { 3, 30, 0 } } }, + { { { 12, 0, 0 }, { 4, 28, 0 } } }, + { { { 12, 0, 1 }, { 3, 31, 1 } } }, + { { { 12, 0, 2 }, { 3, 31, 0 } } }, + { { { 12, 0, 3 }, { 3, 31, 1 } } }, + { { { 12, 0, 4 }, { 4, 30, 1 } } }, + { { { 13, 0, 3 }, { 4, 30, 0 } } }, + { { { 13, 0, 2 }, { 6, 27, 1 } } }, + { { { 13, 0, 1 }, { 6, 27, 0 } } }, + { { { 13, 0, 0 }, { 4, 31, 0 } } }, + { { { 13, 0, 1 }, { 5, 30, 1 } } }, + { { { 13, 0, 2 }, { 5, 30, 0 } } }, + { { { 13, 0, 3 }, { 8, 24, 0 } } }, + { { { 13, 0, 4 }, { 5, 31, 1 } } }, + { { { 14, 0, 3 }, { 5, 31, 0 } } }, + { { { 14, 0, 2 }, { 5, 31, 1 } } }, + { { { 14, 0, 1 }, { 6, 30, 1 } } }, + { { { 14, 0, 0 }, { 6, 30, 0 } } }, + { { { 14, 0, 1 }, { 6, 31, 1 } } }, + { { { 14, 0, 2 }, { 6, 31, 0 } } }, + { { { 14, 0, 3 }, { 8, 27, 0 } } }, + { { { 14, 0, 4 }, { 7, 30, 1 } } }, + { { { 15, 0, 3 }, { 7, 30, 0 } } }, + { { { 15, 0, 2 }, { 8, 28, 0 } } }, + { { { 15, 0, 1 }, { 7, 31, 1 } } }, + { { { 15, 0, 0 }, { 7, 31, 0 } } }, + { { { 15, 0, 1 }, { 7, 31, 1 } } }, + { { { 15, 0, 2 }, { 8, 30, 1 } } }, + { { { 15, 0, 3 }, { 8, 30, 0 } } }, + { { { 15, 0, 4 }, { 10, 27, 1 } } }, + { { { 16, 0, 4 }, { 10, 27, 0 } } }, + { { { 16, 0, 3 }, { 8, 31, 0 } } }, + { { { 16, 0, 2 }, { 9, 30, 1 } } }, + { { { 16, 0, 1 }, { 9, 30, 0 } } }, + { { { 16, 0, 0 }, { 12, 24, 0 } } }, + { { { 16, 0, 1 }, { 9, 31, 1 } } }, + { { { 16, 0, 2 }, { 9, 31, 0 } } }, + { { { 16, 0, 3 }, { 9, 31, 1 } } }, + { { { 16, 0, 4 }, { 10, 30, 1 } } }, + { { { 17, 0, 3 }, { 10, 30, 0 } } }, + { { { 17, 0, 2 }, { 10, 31, 1 } } }, + { { { 17, 0, 1 }, { 10, 31, 0 } } }, + { { { 17, 0, 0 }, { 12, 27, 0 } } }, + { { { 17, 0, 1 }, { 11, 30, 1 } } }, + { { { 17, 0, 2 }, { 11, 30, 0 } } }, + { { { 17, 0, 3 }, { 12, 28, 0 } } }, + { { { 17, 0, 4 }, { 11, 31, 1 } } }, + { { { 18, 0, 3 }, { 11, 31, 0 } } }, + { { { 18, 0, 2 }, { 11, 31, 1 } } }, + { { { 18, 0, 1 }, { 12, 30, 1 } } }, + { { { 18, 0, 0 }, { 12, 30, 0 } } }, + { { { 18, 0, 1 }, { 14, 27, 1 } } }, + { { { 18, 0, 2 }, { 14, 27, 0 } } }, + { { { 18, 0, 3 }, { 12, 31, 0 } } }, + { { { 18, 0, 4 }, { 13, 30, 1 } } }, + { { { 19, 0, 3 }, { 13, 30, 0 } } }, + { { { 19, 0, 2 }, { 16, 24, 0 } } }, + { { { 19, 0, 1 }, { 13, 31, 1 } } }, + { { { 19, 0, 0 }, { 13, 31, 0 } } }, + { { { 19, 0, 1 }, { 13, 31, 1 } } }, + { { { 19, 0, 2 }, { 14, 30, 1 } } }, + { { { 19, 0, 3 }, { 14, 30, 0 } } }, + { { { 19, 0, 4 }, { 14, 31, 1 } } }, + { { { 20, 0, 4 }, { 14, 31, 0 } } }, + { { { 20, 0, 3 }, { 16, 27, 0 } } }, + { { { 20, 0, 2 }, { 15, 30, 1 } } }, + { { { 20, 0, 1 }, { 15, 30, 0 } } }, + { { { 20, 0, 0 }, { 16, 28, 0 } } }, + { { { 20, 0, 1 }, { 15, 31, 1 } } }, + { { { 20, 0, 2 }, { 15, 31, 0 } } }, + { { { 20, 0, 3 }, { 15, 31, 1 } } }, + { { { 20, 0, 4 }, { 16, 30, 1 } } }, + { { { 21, 0, 3 }, { 16, 30, 0 } } }, + { { { 21, 0, 2 }, { 18, 27, 1 } } }, + { { { 21, 0, 1 }, { 18, 27, 0 } } }, + { { { 21, 0, 0 }, { 16, 31, 0 } } }, + { { { 21, 0, 1 }, { 17, 30, 1 } } }, + { { { 21, 0, 2 }, { 17, 30, 0 } } }, + { { { 21, 0, 3 }, { 20, 24, 0 } } }, + { { { 21, 0, 4 }, { 17, 31, 1 } } }, + { { { 22, 0, 3 }, { 17, 31, 0 } } }, + { { { 22, 0, 2 }, { 17, 31, 1 } } }, + { { { 22, 0, 1 }, { 18, 30, 1 } } }, + { { { 22, 0, 0 }, { 18, 30, 0 } } }, + { { { 22, 0, 1 }, { 18, 31, 1 } } }, + { { { 22, 0, 2 }, { 18, 31, 0 } } }, + { { { 22, 0, 3 }, { 20, 27, 0 } } }, + { { { 22, 0, 4 }, { 19, 30, 1 } } }, + { { { 23, 0, 3 }, { 19, 30, 0 } } }, + { { { 23, 0, 2 }, { 20, 28, 0 } } }, + { { { 23, 0, 1 }, { 19, 31, 1 } } }, + { { { 23, 0, 0 }, { 19, 31, 0 } } }, + { { { 23, 0, 1 }, { 19, 31, 1 } } }, + { { { 23, 0, 2 }, { 20, 30, 1 } } }, + { { { 23, 0, 3 }, { 20, 30, 0 } } }, + { { { 23, 0, 4 }, { 22, 27, 1 } } }, + { { { 24, 0, 4 }, { 22, 27, 0 } } }, + { { { 24, 0, 3 }, { 20, 31, 0 } } }, + { { { 24, 0, 2 }, { 21, 30, 1 } } }, + { { { 24, 0, 1 }, { 21, 30, 0 } } }, + { { { 24, 0, 0 }, { 24, 24, 0 } } }, + { { { 24, 0, 1 }, { 21, 31, 1 } } }, + { { { 24, 0, 2 }, { 21, 31, 0 } } }, + { { { 24, 0, 3 }, { 21, 31, 1 } } }, + { { { 24, 0, 4 }, { 22, 30, 1 } } }, + { { { 25, 0, 3 }, { 22, 30, 0 } } }, + { { { 25, 0, 2 }, { 22, 31, 1 } } }, + { { { 25, 0, 1 }, { 22, 31, 0 } } }, + { { { 25, 0, 0 }, { 24, 27, 0 } } }, + { { { 25, 0, 1 }, { 23, 30, 1 } } }, + { { { 25, 0, 2 }, { 23, 30, 0 } } }, + { { { 25, 0, 3 }, { 24, 28, 0 } } }, + { { { 25, 0, 4 }, { 23, 31, 1 } } }, + { { { 26, 0, 3 }, { 23, 31, 0 } } }, + { { { 26, 0, 2 }, { 23, 31, 1 } } }, + { { { 26, 0, 1 }, { 24, 30, 1 } } }, + { { { 26, 0, 0 }, { 24, 30, 0 } } }, + { { { 26, 0, 1 }, { 26, 27, 1 } } }, + { { { 26, 0, 2 }, { 26, 27, 0 } } }, + { { { 26, 0, 3 }, { 24, 31, 0 } } }, + { { { 26, 0, 4 }, { 25, 30, 1 } } }, + { { { 27, 0, 3 }, { 25, 30, 0 } } }, + { { { 27, 0, 2 }, { 28, 24, 0 } } }, + { { { 27, 0, 1 }, { 25, 31, 1 } } }, + { { { 27, 0, 0 }, { 25, 31, 0 } } }, + { { { 27, 0, 1 }, { 25, 31, 1 } } }, + { { { 27, 0, 2 }, { 26, 30, 1 } } }, + { { { 27, 0, 3 }, { 26, 30, 0 } } }, + { { { 27, 0, 4 }, { 26, 31, 1 } } }, + { { { 28, 0, 4 }, { 26, 31, 0 } } }, + { { { 28, 0, 3 }, { 28, 27, 0 } } }, + { { { 28, 0, 2 }, { 27, 30, 1 } } }, + { { { 28, 0, 1 }, { 27, 30, 0 } } }, + { { { 28, 0, 0 }, { 28, 28, 0 } } }, + { { { 28, 0, 1 }, { 27, 31, 1 } } }, + { { { 28, 0, 2 }, { 27, 31, 0 } } }, + { { { 28, 0, 3 }, { 27, 31, 1 } } }, + { { { 28, 0, 4 }, { 28, 30, 1 } } }, + { { { 29, 0, 3 }, { 28, 30, 0 } } }, + { { { 29, 0, 2 }, { 30, 27, 1 } } }, + { { { 29, 0, 1 }, { 30, 27, 0 } } }, + { { { 29, 0, 0 }, { 28, 31, 0 } } }, + { { { 29, 0, 1 }, { 29, 30, 1 } } }, + { { { 29, 0, 2 }, { 29, 30, 0 } } }, + { { { 29, 0, 3 }, { 29, 30, 1 } } }, + { { { 29, 0, 4 }, { 29, 31, 1 } } }, + { { { 30, 0, 3 }, { 29, 31, 0 } } }, + { { { 30, 0, 2 }, { 29, 31, 1 } } }, + { { { 30, 0, 1 }, { 30, 30, 1 } } }, + { { { 30, 0, 0 }, { 30, 30, 0 } } }, + { { { 30, 0, 1 }, { 30, 31, 1 } } }, + { { { 30, 0, 2 }, { 30, 31, 0 } } }, + { { { 30, 0, 3 }, { 30, 31, 1 } } }, + { { { 30, 0, 4 }, { 31, 30, 1 } } }, + { { { 31, 0, 3 }, { 31, 30, 0 } } }, + { { { 31, 0, 2 }, { 31, 30, 1 } } }, + { { { 31, 0, 1 }, { 31, 31, 1 } } }, + { { { 31, 0, 0 }, { 31, 31, 0 } } } +}; + +static SingleColourLookup const lookup_6_4[] = +{ + { { { 0, 0, 0 }, { 0, 0, 0 } } }, + { { { 0, 0, 1 }, { 0, 1, 0 } } }, + { { { 0, 0, 2 }, { 0, 2, 0 } } }, + { { { 1, 0, 1 }, { 0, 3, 1 } } }, + { { { 1, 0, 0 }, { 0, 3, 0 } } }, + { { { 1, 0, 1 }, { 0, 4, 0 } } }, + { { { 1, 0, 2 }, { 0, 5, 0 } } }, + { { { 2, 0, 1 }, { 0, 6, 1 } } }, + { { { 2, 0, 0 }, { 0, 6, 0 } } }, + { { { 2, 0, 1 }, { 0, 7, 0 } } }, + { { { 2, 0, 2 }, { 0, 8, 0 } } }, + { { { 3, 0, 1 }, { 0, 9, 1 } } }, + { { { 3, 0, 0 }, { 0, 9, 0 } } }, + { { { 3, 0, 1 }, { 0, 10, 0 } } }, + { { { 3, 0, 2 }, { 0, 11, 0 } } }, + { { { 4, 0, 1 }, { 0, 12, 1 } } }, + { { { 4, 0, 0 }, { 0, 12, 0 } } }, + { { { 4, 0, 1 }, { 0, 13, 0 } } }, + { { { 4, 0, 2 }, { 0, 14, 0 } } }, + { { { 5, 0, 1 }, { 0, 15, 1 } } }, + { { { 5, 0, 0 }, { 0, 15, 0 } } }, + { { { 5, 0, 1 }, { 0, 16, 0 } } }, + { { { 5, 0, 2 }, { 1, 15, 0 } } }, + { { { 6, 0, 1 }, { 0, 17, 0 } } }, + { { { 6, 0, 0 }, { 0, 18, 0 } } }, + { { { 6, 0, 1 }, { 0, 19, 0 } } }, + { { { 6, 0, 2 }, { 3, 14, 0 } } }, + { { { 7, 0, 1 }, { 0, 20, 0 } } }, + { { { 7, 0, 0 }, { 0, 21, 0 } } }, + { { { 7, 0, 1 }, { 0, 22, 0 } } }, + { { { 7, 0, 2 }, { 4, 15, 0 } } }, + { { { 8, 0, 1 }, { 0, 23, 0 } } }, + { { { 8, 0, 0 }, { 0, 24, 0 } } }, + { { { 8, 0, 1 }, { 0, 25, 0 } } }, + { { { 8, 0, 2 }, { 6, 14, 0 } } }, + { { { 9, 0, 1 }, { 0, 26, 0 } } }, + { { { 9, 0, 0 }, { 0, 27, 0 } } }, + { { { 9, 0, 1 }, { 0, 28, 0 } } }, + { { { 9, 0, 2 }, { 7, 15, 0 } } }, + { { { 10, 0, 1 }, { 0, 29, 0 } } }, + { { { 10, 0, 0 }, { 0, 30, 0 } } }, + { { { 10, 0, 1 }, { 0, 31, 0 } } }, + { { { 10, 0, 2 }, { 9, 14, 0 } } }, + { { { 11, 0, 1 }, { 0, 32, 0 } } }, + { { { 11, 0, 0 }, { 0, 33, 0 } } }, + { { { 11, 0, 1 }, { 2, 30, 0 } } }, + { { { 11, 0, 2 }, { 0, 34, 0 } } }, + { { { 12, 0, 1 }, { 0, 35, 0 } } }, + { { { 12, 0, 0 }, { 0, 36, 0 } } }, + { { { 12, 0, 1 }, { 3, 31, 0 } } }, + { { { 12, 0, 2 }, { 0, 37, 0 } } }, + { { { 13, 0, 1 }, { 0, 38, 0 } } }, + { { { 13, 0, 0 }, { 0, 39, 0 } } }, + { { { 13, 0, 1 }, { 5, 30, 0 } } }, + { { { 13, 0, 2 }, { 0, 40, 0 } } }, + { { { 14, 0, 1 }, { 0, 41, 0 } } }, + { { { 14, 0, 0 }, { 0, 42, 0 } } }, + { { { 14, 0, 1 }, { 6, 31, 0 } } }, + { { { 14, 0, 2 }, { 0, 43, 0 } } }, + { { { 15, 0, 1 }, { 0, 44, 0 } } }, + { { { 15, 0, 0 }, { 0, 45, 0 } } }, + { { { 15, 0, 1 }, { 8, 30, 0 } } }, + { { { 15, 0, 2 }, { 0, 46, 0 } } }, + { { { 16, 0, 2 }, { 0, 47, 0 } } }, + { { { 16, 0, 1 }, { 1, 46, 0 } } }, + { { { 16, 0, 0 }, { 0, 48, 0 } } }, + { { { 16, 0, 1 }, { 0, 49, 0 } } }, + { { { 16, 0, 2 }, { 0, 50, 0 } } }, + { { { 17, 0, 1 }, { 2, 47, 0 } } }, + { { { 17, 0, 0 }, { 0, 51, 0 } } }, + { { { 17, 0, 1 }, { 0, 52, 0 } } }, + { { { 17, 0, 2 }, { 0, 53, 0 } } }, + { { { 18, 0, 1 }, { 4, 46, 0 } } }, + { { { 18, 0, 0 }, { 0, 54, 0 } } }, + { { { 18, 0, 1 }, { 0, 55, 0 } } }, + { { { 18, 0, 2 }, { 0, 56, 0 } } }, + { { { 19, 0, 1 }, { 5, 47, 0 } } }, + { { { 19, 0, 0 }, { 0, 57, 0 } } }, + { { { 19, 0, 1 }, { 0, 58, 0 } } }, + { { { 19, 0, 2 }, { 0, 59, 0 } } }, + { { { 20, 0, 1 }, { 7, 46, 0 } } }, + { { { 20, 0, 0 }, { 0, 60, 0 } } }, + { { { 20, 0, 1 }, { 0, 61, 0 } } }, + { { { 20, 0, 2 }, { 0, 62, 0 } } }, + { { { 21, 0, 1 }, { 8, 47, 0 } } }, + { { { 21, 0, 0 }, { 0, 63, 0 } } }, + { { { 21, 0, 1 }, { 1, 62, 0 } } }, + { { { 21, 0, 2 }, { 1, 63, 0 } } }, + { { { 22, 0, 1 }, { 10, 46, 0 } } }, + { { { 22, 0, 0 }, { 2, 62, 0 } } }, + { { { 22, 0, 1 }, { 2, 63, 0 } } }, + { { { 22, 0, 2 }, { 3, 62, 0 } } }, + { { { 23, 0, 1 }, { 11, 47, 0 } } }, + { { { 23, 0, 0 }, { 3, 63, 0 } } }, + { { { 23, 0, 1 }, { 4, 62, 0 } } }, + { { { 23, 0, 2 }, { 4, 63, 0 } } }, + { { { 24, 0, 1 }, { 13, 46, 0 } } }, + { { { 24, 0, 0 }, { 5, 62, 0 } } }, + { { { 24, 0, 1 }, { 5, 63, 0 } } }, + { { { 24, 0, 2 }, { 6, 62, 0 } } }, + { { { 25, 0, 1 }, { 14, 47, 0 } } }, + { { { 25, 0, 0 }, { 6, 63, 0 } } }, + { { { 25, 0, 1 }, { 7, 62, 0 } } }, + { { { 25, 0, 2 }, { 7, 63, 0 } } }, + { { { 26, 0, 1 }, { 16, 45, 0 } } }, + { { { 26, 0, 0 }, { 8, 62, 0 } } }, + { { { 26, 0, 1 }, { 8, 63, 0 } } }, + { { { 26, 0, 2 }, { 9, 62, 0 } } }, + { { { 27, 0, 1 }, { 16, 48, 0 } } }, + { { { 27, 0, 0 }, { 9, 63, 0 } } }, + { { { 27, 0, 1 }, { 10, 62, 0 } } }, + { { { 27, 0, 2 }, { 10, 63, 0 } } }, + { { { 28, 0, 1 }, { 16, 51, 0 } } }, + { { { 28, 0, 0 }, { 11, 62, 0 } } }, + { { { 28, 0, 1 }, { 11, 63, 0 } } }, + { { { 28, 0, 2 }, { 12, 62, 0 } } }, + { { { 29, 0, 1 }, { 16, 54, 0 } } }, + { { { 29, 0, 0 }, { 12, 63, 0 } } }, + { { { 29, 0, 1 }, { 13, 62, 0 } } }, + { { { 29, 0, 2 }, { 13, 63, 0 } } }, + { { { 30, 0, 1 }, { 16, 57, 0 } } }, + { { { 30, 0, 0 }, { 14, 62, 0 } } }, + { { { 30, 0, 1 }, { 14, 63, 0 } } }, + { { { 30, 0, 2 }, { 15, 62, 0 } } }, + { { { 31, 0, 1 }, { 16, 60, 0 } } }, + { { { 31, 0, 0 }, { 15, 63, 0 } } }, + { { { 31, 0, 1 }, { 24, 46, 0 } } }, + { { { 31, 0, 2 }, { 16, 62, 0 } } }, + { { { 32, 0, 2 }, { 16, 63, 0 } } }, + { { { 32, 0, 1 }, { 17, 62, 0 } } }, + { { { 32, 0, 0 }, { 25, 47, 0 } } }, + { { { 32, 0, 1 }, { 17, 63, 0 } } }, + { { { 32, 0, 2 }, { 18, 62, 0 } } }, + { { { 33, 0, 1 }, { 18, 63, 0 } } }, + { { { 33, 0, 0 }, { 27, 46, 0 } } }, + { { { 33, 0, 1 }, { 19, 62, 0 } } }, + { { { 33, 0, 2 }, { 19, 63, 0 } } }, + { { { 34, 0, 1 }, { 20, 62, 0 } } }, + { { { 34, 0, 0 }, { 28, 47, 0 } } }, + { { { 34, 0, 1 }, { 20, 63, 0 } } }, + { { { 34, 0, 2 }, { 21, 62, 0 } } }, + { { { 35, 0, 1 }, { 21, 63, 0 } } }, + { { { 35, 0, 0 }, { 30, 46, 0 } } }, + { { { 35, 0, 1 }, { 22, 62, 0 } } }, + { { { 35, 0, 2 }, { 22, 63, 0 } } }, + { { { 36, 0, 1 }, { 23, 62, 0 } } }, + { { { 36, 0, 0 }, { 31, 47, 0 } } }, + { { { 36, 0, 1 }, { 23, 63, 0 } } }, + { { { 36, 0, 2 }, { 24, 62, 0 } } }, + { { { 37, 0, 1 }, { 24, 63, 0 } } }, + { { { 37, 0, 0 }, { 32, 47, 0 } } }, + { { { 37, 0, 1 }, { 25, 62, 0 } } }, + { { { 37, 0, 2 }, { 25, 63, 0 } } }, + { { { 38, 0, 1 }, { 26, 62, 0 } } }, + { { { 38, 0, 0 }, { 32, 50, 0 } } }, + { { { 38, 0, 1 }, { 26, 63, 0 } } }, + { { { 38, 0, 2 }, { 27, 62, 0 } } }, + { { { 39, 0, 1 }, { 27, 63, 0 } } }, + { { { 39, 0, 0 }, { 32, 53, 0 } } }, + { { { 39, 0, 1 }, { 28, 62, 0 } } }, + { { { 39, 0, 2 }, { 28, 63, 0 } } }, + { { { 40, 0, 1 }, { 29, 62, 0 } } }, + { { { 40, 0, 0 }, { 32, 56, 0 } } }, + { { { 40, 0, 1 }, { 29, 63, 0 } } }, + { { { 40, 0, 2 }, { 30, 62, 0 } } }, + { { { 41, 0, 1 }, { 30, 63, 0 } } }, + { { { 41, 0, 0 }, { 32, 59, 0 } } }, + { { { 41, 0, 1 }, { 31, 62, 0 } } }, + { { { 41, 0, 2 }, { 31, 63, 0 } } }, + { { { 42, 0, 1 }, { 32, 61, 0 } } }, + { { { 42, 0, 0 }, { 32, 62, 0 } } }, + { { { 42, 0, 1 }, { 32, 63, 0 } } }, + { { { 42, 0, 2 }, { 41, 46, 0 } } }, + { { { 43, 0, 1 }, { 33, 62, 0 } } }, + { { { 43, 0, 0 }, { 33, 63, 0 } } }, + { { { 43, 0, 1 }, { 34, 62, 0 } } }, + { { { 43, 0, 2 }, { 42, 47, 0 } } }, + { { { 44, 0, 1 }, { 34, 63, 0 } } }, + { { { 44, 0, 0 }, { 35, 62, 0 } } }, + { { { 44, 0, 1 }, { 35, 63, 0 } } }, + { { { 44, 0, 2 }, { 44, 46, 0 } } }, + { { { 45, 0, 1 }, { 36, 62, 0 } } }, + { { { 45, 0, 0 }, { 36, 63, 0 } } }, + { { { 45, 0, 1 }, { 37, 62, 0 } } }, + { { { 45, 0, 2 }, { 45, 47, 0 } } }, + { { { 46, 0, 1 }, { 37, 63, 0 } } }, + { { { 46, 0, 0 }, { 38, 62, 0 } } }, + { { { 46, 0, 1 }, { 38, 63, 0 } } }, + { { { 46, 0, 2 }, { 47, 46, 0 } } }, + { { { 47, 0, 1 }, { 39, 62, 0 } } }, + { { { 47, 0, 0 }, { 39, 63, 0 } } }, + { { { 47, 0, 1 }, { 40, 62, 0 } } }, + { { { 47, 0, 2 }, { 48, 46, 0 } } }, + { { { 48, 0, 2 }, { 40, 63, 0 } } }, + { { { 48, 0, 1 }, { 41, 62, 0 } } }, + { { { 48, 0, 0 }, { 41, 63, 0 } } }, + { { { 48, 0, 1 }, { 48, 49, 0 } } }, + { { { 48, 0, 2 }, { 42, 62, 0 } } }, + { { { 49, 0, 1 }, { 42, 63, 0 } } }, + { { { 49, 0, 0 }, { 43, 62, 0 } } }, + { { { 49, 0, 1 }, { 48, 52, 0 } } }, + { { { 49, 0, 2 }, { 43, 63, 0 } } }, + { { { 50, 0, 1 }, { 44, 62, 0 } } }, + { { { 50, 0, 0 }, { 44, 63, 0 } } }, + { { { 50, 0, 1 }, { 48, 55, 0 } } }, + { { { 50, 0, 2 }, { 45, 62, 0 } } }, + { { { 51, 0, 1 }, { 45, 63, 0 } } }, + { { { 51, 0, 0 }, { 46, 62, 0 } } }, + { { { 51, 0, 1 }, { 48, 58, 0 } } }, + { { { 51, 0, 2 }, { 46, 63, 0 } } }, + { { { 52, 0, 1 }, { 47, 62, 0 } } }, + { { { 52, 0, 0 }, { 47, 63, 0 } } }, + { { { 52, 0, 1 }, { 48, 61, 0 } } }, + { { { 52, 0, 2 }, { 48, 62, 0 } } }, + { { { 53, 0, 1 }, { 56, 47, 0 } } }, + { { { 53, 0, 0 }, { 48, 63, 0 } } }, + { { { 53, 0, 1 }, { 49, 62, 0 } } }, + { { { 53, 0, 2 }, { 49, 63, 0 } } }, + { { { 54, 0, 1 }, { 58, 46, 0 } } }, + { { { 54, 0, 0 }, { 50, 62, 0 } } }, + { { { 54, 0, 1 }, { 50, 63, 0 } } }, + { { { 54, 0, 2 }, { 51, 62, 0 } } }, + { { { 55, 0, 1 }, { 59, 47, 0 } } }, + { { { 55, 0, 0 }, { 51, 63, 0 } } }, + { { { 55, 0, 1 }, { 52, 62, 0 } } }, + { { { 55, 0, 2 }, { 52, 63, 0 } } }, + { { { 56, 0, 1 }, { 61, 46, 0 } } }, + { { { 56, 0, 0 }, { 53, 62, 0 } } }, + { { { 56, 0, 1 }, { 53, 63, 0 } } }, + { { { 56, 0, 2 }, { 54, 62, 0 } } }, + { { { 57, 0, 1 }, { 62, 47, 0 } } }, + { { { 57, 0, 0 }, { 54, 63, 0 } } }, + { { { 57, 0, 1 }, { 55, 62, 0 } } }, + { { { 57, 0, 2 }, { 55, 63, 0 } } }, + { { { 58, 0, 1 }, { 56, 62, 1 } } }, + { { { 58, 0, 0 }, { 56, 62, 0 } } }, + { { { 58, 0, 1 }, { 56, 63, 0 } } }, + { { { 58, 0, 2 }, { 57, 62, 0 } } }, + { { { 59, 0, 1 }, { 57, 63, 1 } } }, + { { { 59, 0, 0 }, { 57, 63, 0 } } }, + { { { 59, 0, 1 }, { 58, 62, 0 } } }, + { { { 59, 0, 2 }, { 58, 63, 0 } } }, + { { { 60, 0, 1 }, { 59, 62, 1 } } }, + { { { 60, 0, 0 }, { 59, 62, 0 } } }, + { { { 60, 0, 1 }, { 59, 63, 0 } } }, + { { { 60, 0, 2 }, { 60, 62, 0 } } }, + { { { 61, 0, 1 }, { 60, 63, 1 } } }, + { { { 61, 0, 0 }, { 60, 63, 0 } } }, + { { { 61, 0, 1 }, { 61, 62, 0 } } }, + { { { 61, 0, 2 }, { 61, 63, 0 } } }, + { { { 62, 0, 1 }, { 62, 62, 1 } } }, + { { { 62, 0, 0 }, { 62, 62, 0 } } }, + { { { 62, 0, 1 }, { 62, 63, 0 } } }, + { { { 62, 0, 2 }, { 63, 62, 0 } } }, + { { { 63, 0, 1 }, { 63, 63, 1 } } }, + { { { 63, 0, 0 }, { 63, 63, 0 } } } +}; diff --git a/thirdparty/squish/squish.cpp b/thirdparty/squish/squish.cpp new file mode 100644 index 0000000000..bbe89bfcfe --- /dev/null +++ b/thirdparty/squish/squish.cpp @@ -0,0 +1,239 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#include <squish.h> +#include "colourset.h" +#include "maths.h" +#include "rangefit.h" +#include "clusterfit.h" +#include "colourblock.h" +#include "alpha.h" +#include "singlecolourfit.h" + +namespace squish { + +static int FixFlags( int flags ) +{ + // grab the flag bits + int method = flags & ( kDxt1 | kDxt3 | kDxt5 ); + int fit = flags & ( kColourIterativeClusterFit | kColourClusterFit | kColourRangeFit ); + int metric = flags & ( kColourMetricPerceptual | kColourMetricUniform ); + int extra = flags & kWeightColourByAlpha; + + // set defaults + if( method != kDxt3 && method != kDxt5 ) + method = kDxt1; + if( fit != kColourRangeFit ) + fit = kColourClusterFit; + if( metric != kColourMetricUniform ) + metric = kColourMetricPerceptual; + + // done + return method | fit | metric | extra; +} + +void Compress( u8 const* rgba, void* block, int flags ) +{ + // compress with full mask + CompressMasked( rgba, 0xffff, block, flags ); +} + +void CompressMasked( u8 const* rgba, int mask, void* block, int flags ) +{ + // fix any bad flags + flags = FixFlags( flags ); + + // get the block locations + void* colourBlock = block; + void* alphaBock = block; + if( ( flags & ( kDxt3 | kDxt5 ) ) != 0 ) + colourBlock = reinterpret_cast< u8* >( block ) + 8; + + // create the minimal point set + ColourSet colours( rgba, mask, flags ); + + // check the compression type and compress colour + if( colours.GetCount() == 1 ) + { + // always do a single colour fit + SingleColourFit fit( &colours, flags ); + fit.Compress( colourBlock ); + } + else if( ( flags & kColourRangeFit ) != 0 || colours.GetCount() == 0 ) + { + // do a range fit + RangeFit fit( &colours, flags ); + fit.Compress( colourBlock ); + } + else + { + // default to a cluster fit (could be iterative or not) + ClusterFit fit( &colours, flags ); + fit.Compress( colourBlock ); + } + + // compress alpha separately if necessary + if( ( flags & kDxt3 ) != 0 ) + CompressAlphaDxt3( rgba, mask, alphaBock ); + else if( ( flags & kDxt5 ) != 0 ) + CompressAlphaDxt5( rgba, mask, alphaBock ); +} + +void Decompress( u8* rgba, void const* block, int flags ) +{ + // fix any bad flags + flags = FixFlags( flags ); + + // get the block locations + void const* colourBlock = block; + void const* alphaBock = block; + if( ( flags & ( kDxt3 | kDxt5 ) ) != 0 ) + colourBlock = reinterpret_cast< u8 const* >( block ) + 8; + + // decompress colour + DecompressColour( rgba, colourBlock, ( flags & kDxt1 ) != 0 ); + + // decompress alpha separately if necessary + if( ( flags & kDxt3 ) != 0 ) + DecompressAlphaDxt3( rgba, alphaBock ); + else if( ( flags & kDxt5 ) != 0 ) + DecompressAlphaDxt5( rgba, alphaBock ); +} + +int GetStorageRequirements( int width, int height, int flags ) +{ + // fix any bad flags + flags = FixFlags( flags ); + + // compute the storage requirements + int blockcount = ( ( width + 3 )/4 ) * ( ( height + 3 )/4 ); + int blocksize = ( ( flags & kDxt1 ) != 0 ) ? 8 : 16; + return blockcount*blocksize; +} + +void CompressImage( u8 const* rgba, int width, int height, void* blocks, int flags ) +{ + // fix any bad flags + flags = FixFlags( flags ); + + // initialise the block output + u8* targetBlock = reinterpret_cast< u8* >( blocks ); + int bytesPerBlock = ( ( flags & kDxt1 ) != 0 ) ? 8 : 16; + + // loop over blocks + for( int y = 0; y < height; y += 4 ) + { + for( int x = 0; x < width; x += 4 ) + { + // build the 4x4 block of pixels + u8 sourceRgba[16*4]; + u8* targetPixel = sourceRgba; + int mask = 0; + for( int py = 0; py < 4; ++py ) + { + for( int px = 0; px < 4; ++px ) + { + // get the source pixel in the image + int sx = x + px; + int sy = y + py; + + // enable if we're in the image + if( sx < width && sy < height ) + { + // copy the rgba value + u8 const* sourcePixel = rgba + 4*( width*sy + sx ); + for( int i = 0; i < 4; ++i ) + *targetPixel++ = *sourcePixel++; + + // enable this pixel + mask |= ( 1 << ( 4*py + px ) ); + } + else + { + // skip this pixel as its outside the image + targetPixel += 4; + } + } + } + + // compress it into the output + CompressMasked( sourceRgba, mask, targetBlock, flags ); + + // advance + targetBlock += bytesPerBlock; + } + } +} + +void DecompressImage( u8* rgba, int width, int height, void const* blocks, int flags ) +{ + // fix any bad flags + flags = FixFlags( flags ); + + // initialise the block input + u8 const* sourceBlock = reinterpret_cast< u8 const* >( blocks ); + int bytesPerBlock = ( ( flags & kDxt1 ) != 0 ) ? 8 : 16; + + // loop over blocks + for( int y = 0; y < height; y += 4 ) + { + for( int x = 0; x < width; x += 4 ) + { + // decompress the block + u8 targetRgba[4*16]; + Decompress( targetRgba, sourceBlock, flags ); + + // write the decompressed pixels to the correct image locations + u8 const* sourcePixel = targetRgba; + for( int py = 0; py < 4; ++py ) + { + for( int px = 0; px < 4; ++px ) + { + // get the target location + int sx = x + px; + int sy = y + py; + if( sx < width && sy < height ) + { + u8* targetPixel = rgba + 4*( width*sy + sx ); + + // copy the rgba value + for( int i = 0; i < 4; ++i ) + *targetPixel++ = *sourcePixel++; + } + else + { + // skip this pixel as its outside the image + sourcePixel += 4; + } + } + } + + // advance + sourceBlock += bytesPerBlock; + } + } +} + +} // namespace squish diff --git a/thirdparty/squish/squish.h b/thirdparty/squish/squish.h new file mode 100644 index 0000000000..5f5ac149d7 --- /dev/null +++ b/thirdparty/squish/squish.h @@ -0,0 +1,247 @@ +/* ----------------------------------------------------------------------------- + + Copyright (c) 2006 Simon Brown si@sjbrown.co.uk + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + -------------------------------------------------------------------------- */ + +#ifndef SQUISH_H +#define SQUISH_H + +//! All squish API functions live in this namespace. +namespace squish { + +// ----------------------------------------------------------------------------- + +//! Typedef a quantity that is a single unsigned byte. +typedef unsigned char u8; + +// ----------------------------------------------------------------------------- + +enum +{ + //! Use DXT1 compression. + kDxt1 = ( 1 << 0 ), + + //! Use DXT3 compression. + kDxt3 = ( 1 << 1 ), + + //! Use DXT5 compression. + kDxt5 = ( 1 << 2 ), + + //! Use a very slow but very high quality colour compressor. + kColourIterativeClusterFit = ( 1 << 8 ), + + //! Use a slow but high quality colour compressor (the default). + kColourClusterFit = ( 1 << 3 ), + + //! Use a fast but low quality colour compressor. + kColourRangeFit = ( 1 << 4 ), + + //! Use a perceptual metric for colour error (the default). + kColourMetricPerceptual = ( 1 << 5 ), + + //! Use a uniform metric for colour error. + kColourMetricUniform = ( 1 << 6 ), + + //! Weight the colour by alpha during cluster fit (disabled by default). + kWeightColourByAlpha = ( 1 << 7 ) +}; + +// ----------------------------------------------------------------------------- + +/*! @brief Compresses a 4x4 block of pixels. + + @param rgba The rgba values of the 16 source pixels. + @param block Storage for the compressed DXT block. + @param flags Compression flags. + + The source pixels should be presented as a contiguous array of 16 rgba + values, with each component as 1 byte each. In memory this should be: + + { r1, g1, b1, a1, .... , r16, g16, b16, a16 } + + The flags parameter should specify either kDxt1, kDxt3 or kDxt5 compression, + however, DXT1 will be used by default if none is specified. When using DXT1 + compression, 8 bytes of storage are required for the compressed DXT block. + DXT3 and DXT5 compression require 16 bytes of storage per block. + + The flags parameter can also specify a preferred colour compressor and + colour error metric to use when fitting the RGB components of the data. + Possible colour compressors are: kColourClusterFit (the default), + kColourRangeFit or kColourIterativeClusterFit. Possible colour error metrics + are: kColourMetricPerceptual (the default) or kColourMetricUniform. If no + flags are specified in any particular category then the default will be + used. Unknown flags are ignored. + + When using kColourClusterFit, an additional flag can be specified to + weight the colour of each pixel by its alpha value. For images that are + rendered using alpha blending, this can significantly increase the + perceived quality. +*/ +void Compress( u8 const* rgba, void* block, int flags ); + +// ----------------------------------------------------------------------------- + +/*! @brief Compresses a 4x4 block of pixels. + + @param rgba The rgba values of the 16 source pixels. + @param mask The valid pixel mask. + @param block Storage for the compressed DXT block. + @param flags Compression flags. + + The source pixels should be presented as a contiguous array of 16 rgba + values, with each component as 1 byte each. In memory this should be: + + { r1, g1, b1, a1, .... , r16, g16, b16, a16 } + + The mask parameter enables only certain pixels within the block. The lowest + bit enables the first pixel and so on up to the 16th bit. Bits beyond the + 16th bit are ignored. Pixels that are not enabled are allowed to take + arbitrary colours in the output block. An example of how this can be used + is in the CompressImage function to disable pixels outside the bounds of + the image when the width or height is not divisible by 4. + + The flags parameter should specify either kDxt1, kDxt3 or kDxt5 compression, + however, DXT1 will be used by default if none is specified. When using DXT1 + compression, 8 bytes of storage are required for the compressed DXT block. + DXT3 and DXT5 compression require 16 bytes of storage per block. + + The flags parameter can also specify a preferred colour compressor and + colour error metric to use when fitting the RGB components of the data. + Possible colour compressors are: kColourClusterFit (the default), + kColourRangeFit or kColourIterativeClusterFit. Possible colour error metrics + are: kColourMetricPerceptual (the default) or kColourMetricUniform. If no + flags are specified in any particular category then the default will be + used. Unknown flags are ignored. + + When using kColourClusterFit, an additional flag can be specified to + weight the colour of each pixel by its alpha value. For images that are + rendered using alpha blending, this can significantly increase the + perceived quality. +*/ +void CompressMasked( u8 const* rgba, int mask, void* block, int flags ); + +// ----------------------------------------------------------------------------- + +/*! @brief Decompresses a 4x4 block of pixels. + + @param rgba Storage for the 16 decompressed pixels. + @param block The compressed DXT block. + @param flags Compression flags. + + The decompressed pixels will be written as a contiguous array of 16 rgba + values, with each component as 1 byte each. In memory this is: + + { r1, g1, b1, a1, .... , r16, g16, b16, a16 } + + The flags parameter should specify either kDxt1, kDxt3 or kDxt5 compression, + however, DXT1 will be used by default if none is specified. All other flags + are ignored. +*/ +void Decompress( u8* rgba, void const* block, int flags ); + +// ----------------------------------------------------------------------------- + +/*! @brief Computes the amount of compressed storage required. + + @param width The width of the image. + @param height The height of the image. + @param flags Compression flags. + + The flags parameter should specify either kDxt1, kDxt3 or kDxt5 compression, + however, DXT1 will be used by default if none is specified. All other flags + are ignored. + + Most DXT images will be a multiple of 4 in each dimension, but this + function supports arbitrary size images by allowing the outer blocks to + be only partially used. +*/ +int GetStorageRequirements( int width, int height, int flags ); + +// ----------------------------------------------------------------------------- + +/*! @brief Compresses an image in memory. + + @param rgba The pixels of the source. + @param width The width of the source image. + @param height The height of the source image. + @param blocks Storage for the compressed output. + @param flags Compression flags. + + The source pixels should be presented as a contiguous array of width*height + rgba values, with each component as 1 byte each. In memory this should be: + + { r1, g1, b1, a1, .... , rn, gn, bn, an } for n = width*height + + The flags parameter should specify either kDxt1, kDxt3 or kDxt5 compression, + however, DXT1 will be used by default if none is specified. When using DXT1 + compression, 8 bytes of storage are required for each compressed DXT block. + DXT3 and DXT5 compression require 16 bytes of storage per block. + + The flags parameter can also specify a preferred colour compressor and + colour error metric to use when fitting the RGB components of the data. + Possible colour compressors are: kColourClusterFit (the default), + kColourRangeFit or kColourIterativeClusterFit. Possible colour error metrics + are: kColourMetricPerceptual (the default) or kColourMetricUniform. If no + flags are specified in any particular category then the default will be + used. Unknown flags are ignored. + + When using kColourClusterFit, an additional flag can be specified to + weight the colour of each pixel by its alpha value. For images that are + rendered using alpha blending, this can significantly increase the + perceived quality. + + Internally this function calls squish::Compress for each block. To see how + much memory is required in the compressed image, use + squish::GetStorageRequirements. +*/ +void CompressImage( u8 const* rgba, int width, int height, void* blocks, int flags ); + +// ----------------------------------------------------------------------------- + +/*! @brief Decompresses an image in memory. + + @param rgba Storage for the decompressed pixels. + @param width The width of the source image. + @param height The height of the source image. + @param blocks The compressed DXT blocks. + @param flags Compression flags. + + The decompressed pixels will be written as a contiguous array of width*height + 16 rgba values, with each component as 1 byte each. In memory this is: + + { r1, g1, b1, a1, .... , rn, gn, bn, an } for n = width*height + + The flags parameter should specify either kDxt1, kDxt3 or kDxt5 compression, + however, DXT1 will be used by default if none is specified. All other flags + are ignored. + + Internally this function calls squish::Decompress for each block. +*/ +void DecompressImage( u8* rgba, int width, int height, void const* blocks, int flags ); + +// ----------------------------------------------------------------------------- + +} // namespace squish + +#endif // ndef SQUISH_H + |