Team Fortress 2 Source Code as on 22/4/2020
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: Provide a class (SSE/SIMD only) holding a 2d matrix of class FourVectors,
// for high speed processing in tools.
//
// $NoKeywords: $
//
//=============================================================================//
#include "basetypes.h"
#include "mathlib/mathlib.h"
#include "mathlib/simdvectormatrix.h"
#include "mathlib/ssemath.h"
#include "tier0/dbg.h"
void CSIMDVectorMatrix::CreateFromRGBA_FloatImageData(int srcwidth, int srcheight,
float const *srcdata )
{
Assert( srcwidth && srcheight && srcdata );
SetSize( srcwidth, srcheight );
FourVectors *p_write_ptr=m_pData;
int n_vectors_per_source_line=(srcwidth >> 2);
int ntrailing_pixels_per_source_line=(srcwidth & 3);
for(int y=0;y<srcheight;y++)
{
float const *data_in=srcdata;
float *data_out=reinterpret_cast<float *>( p_write_ptr );
// copy full input blocks
for(int x=0;x<n_vectors_per_source_line;x++)
{
for(int c=0;c<3;c++)
{
data_out[0]=data_in[c]; // x0
data_out[1]=data_in[4+c]; // x1
data_out[2]=data_in[8+c]; // x2
data_out[3]=data_in[12+c]; // x3
data_out+=4;
}
data_in += 16;
}
// now, copy trailing data and pad with copies
if (ntrailing_pixels_per_source_line )
{
for(int c=0;c<3;c++)
{
for(int cp=0;cp<4; cp++)
{
int real_cp=min( cp, ntrailing_pixels_per_source_line-1 );
data_out[4*c+cp]= data_in[c+4*real_cp];
}
}
}
// advance ptrs to next line
p_write_ptr += m_nPaddedWidth;
srcdata += 4 * srcwidth;
}
}
void CSIMDVectorMatrix::RaiseToPower( float power )
{
int nv=NVectors();
if ( nv )
{
int fixed_point_exp=(int) ( 4.0*power );
FourVectors *src=m_pData;
do
{
src->x=Pow_FixedPoint_Exponent_SIMD( src->x, fixed_point_exp );
src->y=Pow_FixedPoint_Exponent_SIMD( src->y, fixed_point_exp );
src->z=Pow_FixedPoint_Exponent_SIMD( src->z, fixed_point_exp );
src++;
} while (--nv);
}
}
CSIMDVectorMatrix & CSIMDVectorMatrix::operator+=( CSIMDVectorMatrix const &src )
{
Assert( m_nWidth == src.m_nWidth );
Assert( m_nHeight == src.m_nHeight );
int nv=NVectors();
if ( nv )
{
FourVectors *srcv=src.m_pData;
FourVectors *destv=m_pData;
do // !! speed !! inline more iters
{
*( destv++ ) += *( srcv++ );
} while ( --nv );
}
return *this;
}
CSIMDVectorMatrix & CSIMDVectorMatrix::operator*=( Vector const &src )
{
int nv=NVectors();
if ( nv )
{
FourVectors scalevalue;
scalevalue.DuplicateVector( src );
FourVectors *destv=m_pData;
do // !! speed !! inline more iters
{
destv->VProduct( scalevalue );
destv++;
} while ( --nv );
}
return *this;
}