/*

 * simd.h: abstraction of Intel SSE instruction set

 *

 * This file is part of Pyrit Ray Tracer.

 *

 * Copyright 2008  Radek Brich

 *

 * 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 SIMD_H

#define SIMD_H

#include "common.h"

#ifndef NO_SIMD

#include <xmmintrin.h>

typedef __m128 mfloat4;

#define mZero  _mm_set_ps1(0.0f)

#define mOne   _mm_set_ps1(1.0f)

#define mTwo   _mm_set_ps1(2.0f)

#define mEps   _mm_set_ps1(Eps)

#define mMEps  _mm_set_ps1(-Eps)

#define mInf   _mm_set_ps1(Inf)

#define mMInf  _mm_set_ps1(-Inf)

#define mAllSet  _mm_cmplt_ps(mZero, mOne)

#define mset1 _mm_set_ps1

#define mset _mm_set_ps

#define madd _mm_add_ps

#define msub _mm_sub_ps

#define mmul _mm_mul_ps

#define mdiv _mm_div_ps

#define msqrt _mm_sqrt_ps

#define mand _mm_and_ps

#define mor  _mm_or_ps

#define mcmpgt _mm_cmpgt_ps

#define mcmplt _mm_cmplt_ps

#define mcmpge _mm_cmpge_ps

#define mcmple _mm_cmple_ps

#define mcmpeq _mm_cmpeq_ps

#define mcmpneq _mm_cmpneq_ps

#define mmin _mm_min_ps

#define mmax _mm_max_ps

#define mmovemask _mm_movemask_ps

inline const mfloat4 mselect(const mfloat4& mask, const mfloat4& a, const mfloat4& b)

{

	return _mm_or_ps(_mm_and_ps(mask, a), _mm_andnot_ps(mask, b));

}

inline const mfloat4 mfastpow(const mfloat4& base, const mfloat4& exponent)

{

    __m128 denom = _mm_mul_ps(exponent, base);

    denom = _mm_sub_ps(exponent, denom);

    denom = _mm_add_ps(base, denom);

    return _mm_mul_ps(base, _mm_rcp_ps(denom));

}

#endif

#endif