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/**
* @file llvector4a.cpp
* @brief SIMD vector implementation
*
* $LicenseInfo:firstyear=2010&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llmath.h"
static LL_ALIGN_16(const F32 M_IDENT_3A[12]) =
{ 1.f, 0.f, 0.f, 0.f, // Column 1
0.f, 1.f, 0.f, 0.f, // Column 2
0.f, 0.f, 1.f, 0.f }; // Column 3
extern const LLMatrix3a LL_M3A_IDENTITY = *reinterpret_cast<const LLMatrix3a*> (M_IDENT_3A);
void LLMatrix3a::setMul( const LLMatrix3a& lhs, const LLMatrix3a& rhs )
{
const LLVector4a col0 = lhs.getColumn(0);
const LLVector4a col1 = lhs.getColumn(1);
const LLVector4a col2 = lhs.getColumn(2);
for ( int i = 0; i < 3; i++ )
{
LLVector4a xxxx = _mm_load_ss( rhs.mColumns[i].getF32ptr() );
xxxx.splat<0>( xxxx );
xxxx.mul( col0 );
{
LLVector4a yyyy = _mm_load_ss( rhs.mColumns[i].getF32ptr() + 1 );
yyyy.splat<0>( yyyy );
yyyy.mul( col1 );
xxxx.add( yyyy );
}
{
LLVector4a zzzz = _mm_load_ss( rhs.mColumns[i].getF32ptr() + 2 );
zzzz.splat<0>( zzzz );
zzzz.mul( col2 );
xxxx.add( zzzz );
}
xxxx.store4a( mColumns[i].getF32ptr() );
}
}
/*static */void LLMatrix3a::batchTransform( const LLMatrix3a& xform, const LLVector4a* src, int numVectors, LLVector4a* dst )
{
const LLVector4a col0 = xform.getColumn(0);
const LLVector4a col1 = xform.getColumn(1);
const LLVector4a col2 = xform.getColumn(2);
const LLVector4a* maxAddr = src + numVectors;
if ( numVectors & 0x1 )
{
LLVector4a xxxx = _mm_load_ss( (const F32*)src );
LLVector4a yyyy = _mm_load_ss( (const F32*)src + 1 );
LLVector4a zzzz = _mm_load_ss( (const F32*)src + 2 );
xxxx.splat<0>( xxxx );
yyyy.splat<0>( yyyy );
zzzz.splat<0>( zzzz );
xxxx.mul( col0 );
yyyy.mul( col1 );
zzzz.mul( col2 );
xxxx.add( yyyy );
xxxx.add( zzzz );
xxxx.store4a( (F32*)dst );
src++;
dst++;
}
numVectors >>= 1;
while ( src < maxAddr )
{
_mm_prefetch( (const char*)(src + 32 ), _MM_HINT_NTA );
_mm_prefetch( (const char*)(dst + 32), _MM_HINT_NTA );
LLVector4a xxxx = _mm_load_ss( (const F32*)src );
LLVector4a xxxx1= _mm_load_ss( (const F32*)(src + 1) );
xxxx.splat<0>( xxxx );
xxxx1.splat<0>( xxxx1 );
xxxx.mul( col0 );
xxxx1.mul( col0 );
{
LLVector4a yyyy = _mm_load_ss( (const F32*)src + 1 );
LLVector4a yyyy1 = _mm_load_ss( (const F32*)(src + 1) + 1);
yyyy.splat<0>( yyyy );
yyyy1.splat<0>( yyyy1 );
yyyy.mul( col1 );
yyyy1.mul( col1 );
xxxx.add( yyyy );
xxxx1.add( yyyy1 );
}
{
LLVector4a zzzz = _mm_load_ss( (const F32*)(src) + 2 );
LLVector4a zzzz1 = _mm_load_ss( (const F32*)(++src) + 2 );
zzzz.splat<0>( zzzz );
zzzz1.splat<0>( zzzz1 );
zzzz.mul( col2 );
zzzz1.mul( col2 );
xxxx.add( zzzz );
xxxx1.add( zzzz1 );
}
xxxx.store4a(dst->getF32ptr());
src++;
dst++;
xxxx1.store4a((F32*)dst++);
}
}
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