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84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/* -----------------------------------------------------------------------------
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Copyright (c) 2006 Simon Brown si@sjbrown.co.uk
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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-------------------------------------------------------------------------- */
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#ifndef NV_SQUISH_CLUSTERFIT_H
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#define NV_SQUISH_CLUSTERFIT_H
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#include "squish.h"
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#include "maths.h"
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#include "simd.h"
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#include "colourfit.h"
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namespace nvsquish {
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class ClusterFit : public ColourFit
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{
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public:
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ClusterFit();
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void SetColourSet( ColourSet const* colours, int flags );
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void SetMetric(float r, float g, float b);
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float GetBestError() const;
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private:
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virtual void Compress3( void* block );
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virtual void Compress4( void* block );
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void Reorder( Vec3::Arg principle );
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Vec3 m_principle;
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#if SQUISH_USE_SIMD
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Vec4 SolveLeastSquares( Vec4& start, Vec4& end ) const;
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Vec4 m_weighted[16];
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Vec4 m_unweighted[16];
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Vec4 m_weights[16];
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Vec4 m_metric;
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Vec4 m_metricSqr;
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Vec4 m_alpha[16];
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Vec4 m_beta[16];
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Vec4 m_xxsum;
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Vec4 m_besterror;
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#else
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float SolveLeastSquares( Vec3& start, Vec3& end ) const;
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Vec3 m_weighted[16];
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Vec3 m_unweighted[16];
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float m_weights[16];
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Vec3 m_metric;
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Vec3 m_metricSqr;
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float m_alpha[16];
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float m_beta[16];
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Vec3 m_xxsum;
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float m_besterror;
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#endif
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int m_order[16];
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};
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} // namespace squish
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#endif // ndef SQUISH_CLUSTERFIT_H
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