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/*
* Copyright 2011-2013 Intel Corporation
* Modifications Copyright 2014, Blender Foundation.
*
* Licensed under the Apache License, Version 2.0(the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __UTIL_SSEB_H__
#define __UTIL_SSEB_H__
CCL_NAMESPACE_BEGIN
#ifdef __KERNEL_SSE2__
struct ssei;
struct ssef;
/*! 4-wide SSE bool type. */
struct sseb
{
typedef sseb Mask; // mask type
typedef ssei Int; // int type
typedef ssef Float; // float type
enum { size = 4 }; // number of SIMD elements
union { __m128 m128; int32_t v[4]; }; // data
////////////////////////////////////////////////////////////////////////////////
/// Constructors, Assignment & Cast Operators
////////////////////////////////////////////////////////////////////////////////
__forceinline sseb ( ) {}
__forceinline sseb ( const sseb& other ) { m128 = other.m128; }
__forceinline sseb& operator=( const sseb& other ) { m128 = other.m128; return *this; }
__forceinline sseb( const __m128 input ) : m128(input) {}
__forceinline operator const __m128&( void ) const { return m128; }
__forceinline operator const __m128i( void ) const { return _mm_castps_si128(m128); }
__forceinline operator const __m128d( void ) const { return _mm_castps_pd(m128); }
__forceinline sseb ( bool a )
: m128(_mm_lookupmask_ps[(size_t(a) << 3) | (size_t(a) << 2) | (size_t(a) << 1) | size_t(a)]) {}
__forceinline sseb ( bool a, bool b)
: m128(_mm_lookupmask_ps[(size_t(b) << 3) | (size_t(a) << 2) | (size_t(b) << 1) | size_t(a)]) {}
__forceinline sseb ( bool a, bool b, bool c, bool d)
: m128(_mm_lookupmask_ps[(size_t(d) << 3) | (size_t(c) << 2) | (size_t(b) << 1) | size_t(a)]) {}
__forceinline sseb(int mask) {
assert(mask >= 0 && mask < 16);
m128 = _mm_lookupmask_ps[mask];
}
////////////////////////////////////////////////////////////////////////////////
/// Constants
////////////////////////////////////////////////////////////////////////////////
__forceinline sseb( FalseTy ) : m128(_mm_setzero_ps()) {}
__forceinline sseb( TrueTy ) : m128(_mm_castsi128_ps(_mm_cmpeq_epi32(_mm_setzero_si128(), _mm_setzero_si128()))) {}
////////////////////////////////////////////////////////////////////////////////
/// Array Access
////////////////////////////////////////////////////////////////////////////////
__forceinline bool operator []( const size_t i ) const { assert(i < 4); return (_mm_movemask_ps(m128) >> i) & 1; }
__forceinline int32_t& operator []( const size_t i ) { assert(i < 4); return v[i]; }
};
////////////////////////////////////////////////////////////////////////////////
/// Unary Operators
////////////////////////////////////////////////////////////////////////////////
__forceinline const sseb operator !( const sseb& a ) { return _mm_xor_ps(a, sseb(True)); }
////////////////////////////////////////////////////////////////////////////////
/// Binary Operators
////////////////////////////////////////////////////////////////////////////////
__forceinline const sseb operator &( const sseb& a, const sseb& b ) { return _mm_and_ps(a, b); }
__forceinline const sseb operator |( const sseb& a, const sseb& b ) { return _mm_or_ps (a, b); }
__forceinline const sseb operator ^( const sseb& a, const sseb& b ) { return _mm_xor_ps(a, b); }
////////////////////////////////////////////////////////////////////////////////
/// Assignment Operators
////////////////////////////////////////////////////////////////////////////////
__forceinline const sseb operator &=( sseb& a, const sseb& b ) { return a = a & b; }
__forceinline const sseb operator |=( sseb& a, const sseb& b ) { return a = a | b; }
__forceinline const sseb operator ^=( sseb& a, const sseb& b ) { return a = a ^ b; }
////////////////////////////////////////////////////////////////////////////////
/// Comparison Operators + Select
////////////////////////////////////////////////////////////////////////////////
__forceinline const sseb operator !=( const sseb& a, const sseb& b ) { return _mm_xor_ps(a, b); }
__forceinline const sseb operator ==( const sseb& a, const sseb& b ) { return _mm_castsi128_ps(_mm_cmpeq_epi32(a, b)); }
__forceinline const sseb select( const sseb& m, const sseb& t, const sseb& f ) {
#if defined(__KERNEL_SSE41__)
return _mm_blendv_ps(f, t, m);
#else
return _mm_or_ps(_mm_and_ps(m, t), _mm_andnot_ps(m, f));
#endif
}
////////////////////////////////////////////////////////////////////////////////
/// Movement/Shifting/Shuffling Functions
////////////////////////////////////////////////////////////////////////////////
__forceinline const sseb unpacklo( const sseb& a, const sseb& b ) { return _mm_unpacklo_ps(a, b); }
__forceinline const sseb unpackhi( const sseb& a, const sseb& b ) { return _mm_unpackhi_ps(a, b); }
template<size_t i0, size_t i1, size_t i2, size_t i3> __forceinline const sseb shuffle( const sseb& a ) {
return _mm_shuffle_epi32(a, _MM_SHUFFLE(i3, i2, i1, i0));
}
template<> __forceinline const sseb shuffle<0, 1, 0, 1>( const sseb& a ) {
return _mm_movelh_ps(a, a);
}
template<> __forceinline const sseb shuffle<2, 3, 2, 3>( const sseb& a ) {
return _mm_movehl_ps(a, a);
}
template<size_t i0, size_t i1, size_t i2, size_t i3> __forceinline const sseb shuffle( const sseb& a, const sseb& b ) {
return _mm_shuffle_ps(a, b, _MM_SHUFFLE(i3, i2, i1, i0));
}
template<> __forceinline const sseb shuffle<0, 1, 0, 1>( const sseb& a, const sseb& b ) {
return _mm_movelh_ps(a, b);
}
template<> __forceinline const sseb shuffle<2, 3, 2, 3>( const sseb& a, const sseb& b ) {
return _mm_movehl_ps(b, a);
}
#if defined(__KERNEL_SSE3__)
template<> __forceinline const sseb shuffle<0, 0, 2, 2>( const sseb& a ) { return _mm_moveldup_ps(a); }
template<> __forceinline const sseb shuffle<1, 1, 3, 3>( const sseb& a ) { return _mm_movehdup_ps(a); }
#endif
#if defined(__KERNEL_SSE41__)
template<size_t dst, size_t src, size_t clr> __forceinline const sseb insert( const sseb& a, const sseb& b ) { return _mm_insert_ps(a, b, (dst << 4) | (src << 6) | clr); }
template<size_t dst, size_t src> __forceinline const sseb insert( const sseb& a, const sseb& b ) { return insert<dst, src, 0>(a, b); }
template<size_t dst> __forceinline const sseb insert( const sseb& a, const bool b ) { return insert<dst,0>(a, sseb(b)); }
#endif
////////////////////////////////////////////////////////////////////////////////
/// Reduction Operations
////////////////////////////////////////////////////////////////////////////////
#if defined(__KERNEL_SSE41__)
__forceinline size_t popcnt( const sseb& a ) { return __popcnt(_mm_movemask_ps(a)); }
#else
__forceinline size_t popcnt( const sseb& a ) { return bool(a[0])+bool(a[1])+bool(a[2])+bool(a[3]); }
#endif
__forceinline bool reduce_and( const sseb& a ) { return _mm_movemask_ps(a) == 0xf; }
__forceinline bool reduce_or ( const sseb& a ) { return _mm_movemask_ps(a) != 0x0; }
__forceinline bool all ( const sseb& b ) { return _mm_movemask_ps(b) == 0xf; }
__forceinline bool any ( const sseb& b ) { return _mm_movemask_ps(b) != 0x0; }
__forceinline bool none ( const sseb& b ) { return _mm_movemask_ps(b) == 0x0; }
__forceinline size_t movemask( const sseb& a ) { return _mm_movemask_ps(a); }
////////////////////////////////////////////////////////////////////////////////
/// Debug Functions
////////////////////////////////////////////////////////////////////////////////
ccl_device_inline void print_sseb(const char *label, const sseb &a)
{
printf("%s: %df %df %df %d\n",
label, a[0], a[1], a[2], a[3]);
}
#endif
CCL_NAMESPACE_END
#endif
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