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87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
// MIT license see full LICENSE text at end of file
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#pragma once
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#include "nvmath/SimdVector.h"
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#include "nvmath/Vector.h"
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// Use SIMD version if altivec or SSE are available.
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#define NVTT_USE_SIMD (NV_USE_ALTIVEC || NV_USE_SSE)
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//#define NVTT_USE_SIMD 0
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#include <xmmintrin.h>
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#if (NV_USE_SSE > 1)
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#include <emmintrin.h>
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#endif
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#ifndef NV_ALIGN_16
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#if NV_CC_GNUC
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# define NV_ALIGN_16 __attribute__ ((__aligned__ (16)))
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#else
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# define NV_ALIGN_16 __declspec(align(16))
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#endif
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#endif
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namespace nv {
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class ClusterFit
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{
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public:
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ClusterFit() {}
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void setColorSet(const Vector3 * colors, const float * weights, int count);
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void setColorWeights(const Vector4 & w);
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float bestError() const;
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bool compress3(Vector3 * start, Vector3 * end);
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bool compress4(Vector3 * start, Vector3 * end);
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private:
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uint m_count;
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// IC: Color and weight arrays are larger than necessary to avoid compiler warning.
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#if NVTT_USE_SIMD
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NV_ALIGN_16 SimdVector m_weighted[17]; // color | weight
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SimdVector m_metric; // vec3
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SimdVector m_metricSqr; // vec3
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SimdVector m_xxsum; // color | weight
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SimdVector m_xsum; // color | weight (wsum)
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SimdVector m_besterror; // scalar
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#else
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Vector3 m_weighted[17];
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float m_weights[17];
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Vector3 m_metric;
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Vector3 m_metricSqr;
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Vector3 m_xxsum;
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Vector3 m_xsum;
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float m_wsum;
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float m_besterror;
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#endif
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};
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} // nv namespace
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// Copyright (c) 2006-2020 Ignacio Castano icastano@nvidia.com
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// Copyright (c) 2006 Simon Brown si@sjbrown.co.uk
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//
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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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//
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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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//
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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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