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added SSE2-optimized 3x3 invert by Grigoriy Frolov

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This commit is contained in:
Vadim Pisarevsky 2012-08-07 17:59:52 +04:00
parent c1571e21ff
commit 4b5f948307
1 changed files with 59 additions and 17 deletions
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48
modules/core/src/lapack.cpp
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@ -1024,7 +1024,7 @@ double cv::invert( InputArray _src, OutputArray _dst, int method )
__m128 s0 = _mm_or_ps(t0, t1);
__m128 det =_mm_set1_ps((float)d);
s0 = _mm_mul_ps(s0, det);
const uchar CV_DECL_ALIGNED(16) inv[16] = {0,0,0,0,0,0,0,0x80,0,0,0,0x80,0,0,0,0};
static const uchar CV_DECL_ALIGNED(16) inv[16] = {0,0,0,0,0,0,0,0x80,0,0,0,0x80,0,0,0,0};
__m128 pattern = _mm_load_ps((const float*)inv);
s0 = _mm_xor_ps(s0, pattern);//==-1*s0
s0 = _mm_shuffle_ps(s0, s0, _MM_SHUFFLE(0,2,1,3));
@ -1064,7 +1064,7 @@ double cv::invert( InputArray _src, OutputArray _dst, int method )
__m128d det = _mm_load1_pd((const double*)&d);
sm = _mm_mul_pd(sm, det);
uchar CV_DECL_ALIGNED(16) inv[8] = {0,0,0,0,0,0,0,0x80};
static const uchar CV_DECL_ALIGNED(16) inv[8] = {0,0,0,0,0,0,0,0x80};
__m128d pattern = _mm_load1_pd((double*)inv);
ss = _mm_mul_pd(ss, det);
ss = _mm_xor_pd(ss, pattern);//==-1*ss
@ -1097,9 +1097,50 @@ double cv::invert( InputArray _src, OutputArray _dst, int method )
double d = det3(Sf);
if( d != 0. )
{
float CV_DECL_ALIGNED(16) t[12];
result = true;
d = 1./d;
float t[9];
#if CV_SSE2
if(USE_SSE2)
{
__m128 det =_mm_set1_ps((float)d);
__m128 s0 = _mm_loadu_ps((const float*)srcdata);//s0 = Sf(0,0) Sf(0,1) Sf(0,2) ***
__m128 s1 = _mm_loadu_ps((const float*)(srcdata+srcstep));//s1 = Sf(1,0) Sf(1,1) Sf(1,2) ***
__m128 s2 = _mm_set_ps(0.f, Sf(2,2), Sf(2,1), Sf(2,0)); //s2 = Sf(2,0) Sf(2,1) Sf(2,2) ***
__m128 r0 = _mm_shuffle_ps(s1,s1,_MM_SHUFFLE(3,0,2,1)); //r0 = Sf(1,1) Sf(1,2) Sf(1,0) ***
__m128 r1 = _mm_shuffle_ps(s2,s2,_MM_SHUFFLE(3,1,0,2)); //r1 = Sf(2,2) Sf(2,0) Sf(2,1) ***
__m128 r2 = _mm_shuffle_ps(s2,s2,_MM_SHUFFLE(3,0,2,1)); //r2 = Sf(2,1) Sf(2,2) Sf(2,0) ***
__m128 t0 = _mm_mul_ps(s0, r0);//t0 = Sf(0,0)*Sf(1,1) Sf(0,1)*Sf(1,2) Sf(0,2)*Sf(1,0) ***
__m128 t1 = _mm_mul_ps(s0, r1);//t1 = Sf(0,0)*Sf(2,2) Sf(0,1)*Sf(2,0) Sf(0,2)*Sf(2,1) ***
__m128 t2 = _mm_mul_ps(s1, r2);//t2 = Sf(1,0)*Sf(2,1) Sf(1,1)*Sf(2,2) Sf(1,2)*Sf(2,0) ***
__m128 r3 = _mm_shuffle_ps(s0,s0,_MM_SHUFFLE(3,0,2,1));//r3 = Sf(0,1) Sf(0,2) Sf(0,0) ***
__m128 r4 = _mm_shuffle_ps(s0,s0,_MM_SHUFFLE(3,1,0,2));//r4 = Sf(0,2) Sf(0,0) Sf(0,1) ***
__m128 t00 = _mm_mul_ps(s1, r3);//t00 = Sf(1,0)*Sf(0,1) Sf(1,1)*Sf(0,2) Sf(1,2)*Sf(0,0) ***
__m128 t11 = _mm_mul_ps(s2, r4);//t11 = Sf(2,0)*Sf(0,2) Sf(2,1)*Sf(0,0) Sf(2,2)*Sf(0,1) ***
__m128 t22 = _mm_mul_ps(s2, r0);//t22 = Sf(2,0)*Sf(1,1) Sf(2,1)*Sf(1,2) Sf(2,2)*Sf(1,0) ***
t0 = _mm_mul_ps(_mm_sub_ps(t0,t00), det);//Sf(0,0)*Sf(1,1) Sf(0,1)*Sf(1,2) Sf(0,2)*Sf(1,0) ***
//-Sf(1,0)*Sf(0,1) -Sf(1,1)*Sf(0,2) -Sf(1,2)*Sf(0,0)
t1 = _mm_mul_ps(_mm_sub_ps(t1,t11), det);//Sf(0,0)*Sf(2,2) Sf(0,1)*Sf(2,0) Sf(0,2)*Sf(2,1) ***
//-Sf(2,0)*Sf(0,2) -Sf(2,1)*Sf(0,0) -Sf(2,2)*Sf(0,1)
t2 = _mm_mul_ps(_mm_sub_ps(t2,t22), det);//Sf(1,0)*Sf(2,1) Sf(1,1)*Sf(2,2) Sf(1,2)*Sf(2,0) ***
//-Sf(2,0)*Sf(1,1) -Sf(2,1)*Sf(1,2) -Sf(2,2)*Sf(1,0)
_mm_store_ps(t, t0);
_mm_store_ps(t+4, t1);
_mm_store_ps(t+8, t2);
Df(0,0) = t[9]; Df(0,1) = t[6]; Df(0,2) = t[1];
Df(1,0) = t[10]; Df(1,1) = t[4]; Df(1,2) = t[2];
Df(2,0) = t[8]; Df(2,1) = t[5]; Df(2,2) = t[0];
}
else
#endif
{
t[0] = (float)(((double)Sf(1,1) * Sf(2,2) - (double)Sf(1,2) * Sf(2,1)) * d);
t[1] = (float)(((double)Sf(0,2) * Sf(2,1) - (double)Sf(0,1) * Sf(2,2)) * d);
t[2] = (float)(((double)Sf(0,1) * Sf(1,2) - (double)Sf(0,2) * Sf(1,1)) * d);
@ -1117,6 +1158,7 @@ double cv::invert( InputArray _src, OutputArray _dst, int method )
Df(2,0) = t[6]; Df(2,1) = t[7]; Df(2,2) = t[8];
}
}
}
else
{
double d = det3(Sd);