mirror of
https://github.com/alliedmodders/hl2sdk.git
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113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Provide a class (SSE/SIMD only) holding a 2d matrix of class FourVectors,
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// for high speed processing in tools.
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//
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// $NoKeywords: $
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//
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//=============================================================================//
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#include "basetypes.h"
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#include "mathlib/mathlib.h"
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#include "mathlib/simdvectormatrix.h"
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#include "mathlib/ssemath.h"
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#include "tier0/dbg.h"
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void CSIMDVectorMatrix::CreateFromRGBA_FloatImageData(int srcwidth, int srcheight,
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float const *srcdata )
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{
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Assert( srcwidth && srcheight && srcdata );
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SetSize( srcwidth, srcheight );
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FourVectors *p_write_ptr=m_pData;
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int n_vectors_per_source_line=(srcwidth >> 2);
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int ntrailing_pixels_per_source_line=(srcwidth & 3);
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for(int y=0;y<srcheight;y++)
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{
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float const *data_in=srcdata;
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float *data_out=reinterpret_cast<float *>( p_write_ptr );
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// copy full input blocks
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for(int x=0;x<n_vectors_per_source_line;x++)
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{
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for(int c=0;c<3;c++)
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{
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data_out[0]=data_in[c]; // x0
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data_out[1]=data_in[4+c]; // x1
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data_out[2]=data_in[8+c]; // x2
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data_out[3]=data_in[12+c]; // x3
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data_out+=4;
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}
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data_in += 16;
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}
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// now, copy trailing data and pad with copies
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if (ntrailing_pixels_per_source_line )
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{
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for(int c=0;c<3;c++)
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{
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for(int cp=0;cp<4; cp++)
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{
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int real_cp=min( cp, ntrailing_pixels_per_source_line-1 );
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data_out[4*c+cp]= data_in[c+4*real_cp];
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}
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}
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}
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// advance ptrs to next line
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p_write_ptr += m_nPaddedWidth;
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srcdata += 4 * srcwidth;
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}
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}
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void CSIMDVectorMatrix::RaiseToPower( float power )
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{
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int nv=NVectors();
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if ( nv )
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{
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int fixed_point_exp=(int) ( 4.0*power );
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FourVectors *src=m_pData;
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do
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{
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src->x=Pow_FixedPoint_Exponent_SIMD( src->x, fixed_point_exp );
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src->y=Pow_FixedPoint_Exponent_SIMD( src->y, fixed_point_exp );
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src->z=Pow_FixedPoint_Exponent_SIMD( src->z, fixed_point_exp );
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src++;
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} while (--nv);
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}
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}
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CSIMDVectorMatrix & CSIMDVectorMatrix::operator+=( CSIMDVectorMatrix const &src )
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{
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Assert( m_nWidth == src.m_nWidth );
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Assert( m_nHeight == src.m_nHeight );
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int nv=NVectors();
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if ( nv )
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{
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FourVectors *srcv=src.m_pData;
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FourVectors *destv=m_pData;
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do // !! speed !! inline more iters
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{
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*( destv++ ) += *( srcv++ );
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} while ( --nv );
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}
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return *this;
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}
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CSIMDVectorMatrix & CSIMDVectorMatrix::operator*=( Vector const &src )
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{
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int nv=NVectors();
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if ( nv )
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{
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FourVectors scalevalue;
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scalevalue.DuplicateVector( src );
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FourVectors *destv=m_pData;
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do // !! speed !! inline more iters
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{
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destv->VProduct( scalevalue );
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destv++;
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} while ( --nv );
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}
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return *this;
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}
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