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| author | Jørgen P. Tjernø <[email protected]> | 2013-12-02 19:31:46 -0800 |
|---|---|---|
| committer | Jørgen P. Tjernø <[email protected]> | 2013-12-02 19:46:31 -0800 |
| commit | f56bb35301836e56582a575a75864392a0177875 (patch) | |
| tree | de61ddd39de3e7df52759711950b4c288592f0dc /mp/src/mathlib/ssenoise.cpp | |
| parent | Mark some more files as text. (diff) | |
| download | source-sdk-2013-f56bb35301836e56582a575a75864392a0177875.tar.xz source-sdk-2013-f56bb35301836e56582a575a75864392a0177875.zip | |
Fix line endings. WHAMMY.
Diffstat (limited to 'mp/src/mathlib/ssenoise.cpp')
| -rw-r--r-- | mp/src/mathlib/ssenoise.cpp | 210 |
1 files changed, 105 insertions, 105 deletions
diff --git a/mp/src/mathlib/ssenoise.cpp b/mp/src/mathlib/ssenoise.cpp index 60c2eb82..244a1e59 100644 --- a/mp/src/mathlib/ssenoise.cpp +++ b/mp/src/mathlib/ssenoise.cpp @@ -1,105 +1,105 @@ -//========= Copyright Valve Corporation, All rights reserved. ============//
-//
-// Purpose: Fast low quality noise suitable for real time use
-//
-//=====================================================================================//
-
-#include <math.h>
-#include <float.h> // Needed for FLT_EPSILON
-#include "basetypes.h"
-#include <memory.h>
-#include "tier0/dbg.h"
-#include "mathlib/mathlib.h"
-#include "mathlib/vector.h"
-#include "mathlib/ssemath.h"
-
-// memdbgon must be the last include file in a .cpp file!!!
-#include "tier0/memdbgon.h"
-#include "noisedata.h"
-
-
-#define MAGIC_NUMBER (1<<15) // gives 8 bits of fraction
-
-static fltx4 Four_MagicNumbers = { MAGIC_NUMBER, MAGIC_NUMBER, MAGIC_NUMBER, MAGIC_NUMBER };
-
-
-static ALIGN16 int32 idx_mask[4]= {0xffff, 0xffff, 0xffff, 0xffff};
-
-#define MASK255 (*((fltx4 *)(& idx_mask )))
-
-// returns 0..1
-static inline float GetLatticePointValue( int idx_x, int idx_y, int idx_z )
-{
- int ret_idx = perm_a[idx_x & 0xff];
- ret_idx = perm_b[( idx_y + ret_idx ) & 0xff];
- ret_idx = perm_c[( idx_z + ret_idx ) & 0xff];
- return impulse_xcoords[ret_idx];
-
-}
-
-fltx4 NoiseSIMD( const fltx4 & x, const fltx4 & y, const fltx4 & z )
-{
- // use magic to convert to integer index
- fltx4 x_idx = AndSIMD( MASK255, AddSIMD( x, Four_MagicNumbers ) );
- fltx4 y_idx = AndSIMD( MASK255, AddSIMD( y, Four_MagicNumbers ) );
- fltx4 z_idx = AndSIMD( MASK255, AddSIMD( z, Four_MagicNumbers ) );
-
- fltx4 lattice000 = Four_Zeros, lattice001 = Four_Zeros, lattice010 = Four_Zeros, lattice011 = Four_Zeros;
- fltx4 lattice100 = Four_Zeros, lattice101 = Four_Zeros, lattice110 = Four_Zeros, lattice111 = Four_Zeros;
-
- // FIXME: Converting the input vectors to int indices will cause load-hit-stores (48 bytes)
- // Converting the indexed noise values back to vectors will cause more (128 bytes)
- // The noise table could store vectors if we chunked it into 2x2x2 blocks.
- fltx4 xfrac = Four_Zeros, yfrac = Four_Zeros, zfrac = Four_Zeros;
-#define DOPASS(i) \
- { unsigned int xi = SubInt( x_idx, i ); \
- unsigned int yi = SubInt( y_idx, i ); \
- unsigned int zi = SubInt( z_idx, i ); \
- SubFloat( xfrac, i ) = (xi & 0xff)*(1.0/256.0); \
- SubFloat( yfrac, i ) = (yi & 0xff)*(1.0/256.0); \
- SubFloat( zfrac, i ) = (zi & 0xff)*(1.0/256.0); \
- xi>>=8; \
- yi>>=8; \
- zi>>=8; \
- \
- SubFloat( lattice000, i ) = GetLatticePointValue( xi,yi,zi ); \
- SubFloat( lattice001, i ) = GetLatticePointValue( xi,yi,zi+1 ); \
- SubFloat( lattice010, i ) = GetLatticePointValue( xi,yi+1,zi ); \
- SubFloat( lattice011, i ) = GetLatticePointValue( xi,yi+1,zi+1 ); \
- SubFloat( lattice100, i ) = GetLatticePointValue( xi+1,yi,zi ); \
- SubFloat( lattice101, i ) = GetLatticePointValue( xi+1,yi,zi+1 ); \
- SubFloat( lattice110, i ) = GetLatticePointValue( xi+1,yi+1,zi ); \
- SubFloat( lattice111, i ) = GetLatticePointValue( xi+1,yi+1,zi+1 ); \
- }
-
- DOPASS( 0 );
- DOPASS( 1 );
- DOPASS( 2 );
- DOPASS( 3 );
-
- // now, we have 8 lattice values for each of four points as m128s, and interpolant values for
- // each axis in m128 form in [xyz]frac. Perfom the trilinear interpolation as SIMD ops
-
- // first, do x interpolation
- fltx4 l2d00 = AddSIMD( lattice000, MulSIMD( xfrac, SubSIMD( lattice100, lattice000 ) ) );
- fltx4 l2d01 = AddSIMD( lattice001, MulSIMD( xfrac, SubSIMD( lattice101, lattice001 ) ) );
- fltx4 l2d10 = AddSIMD( lattice010, MulSIMD( xfrac, SubSIMD( lattice110, lattice010 ) ) );
- fltx4 l2d11 = AddSIMD( lattice011, MulSIMD( xfrac, SubSIMD( lattice111, lattice011 ) ) );
-
- // now, do y interpolation
- fltx4 l1d0 = AddSIMD( l2d00, MulSIMD( yfrac, SubSIMD( l2d10, l2d00 ) ) );
- fltx4 l1d1 = AddSIMD( l2d01, MulSIMD( yfrac, SubSIMD( l2d11, l2d01 ) ) );
-
- // final z interpolation
- fltx4 rslt = AddSIMD( l1d0, MulSIMD( zfrac, SubSIMD( l1d1, l1d0 ) ) );
-
- // map to 0..1
- return MulSIMD( Four_Twos, SubSIMD( rslt, Four_PointFives ) );
-
-
-}
-
-fltx4 NoiseSIMD( FourVectors const &pos )
-{
- return NoiseSIMD( pos.x, pos.y, pos.z );
-}
+//========= Copyright Valve Corporation, All rights reserved. ============// +// +// Purpose: Fast low quality noise suitable for real time use +// +//=====================================================================================// + +#include <math.h> +#include <float.h> // Needed for FLT_EPSILON +#include "basetypes.h" +#include <memory.h> +#include "tier0/dbg.h" +#include "mathlib/mathlib.h" +#include "mathlib/vector.h" +#include "mathlib/ssemath.h" + +// memdbgon must be the last include file in a .cpp file!!! +#include "tier0/memdbgon.h" +#include "noisedata.h" + + +#define MAGIC_NUMBER (1<<15) // gives 8 bits of fraction + +static fltx4 Four_MagicNumbers = { MAGIC_NUMBER, MAGIC_NUMBER, MAGIC_NUMBER, MAGIC_NUMBER }; + + +static ALIGN16 int32 idx_mask[4]= {0xffff, 0xffff, 0xffff, 0xffff}; + +#define MASK255 (*((fltx4 *)(& idx_mask ))) + +// returns 0..1 +static inline float GetLatticePointValue( int idx_x, int idx_y, int idx_z ) +{ + int ret_idx = perm_a[idx_x & 0xff]; + ret_idx = perm_b[( idx_y + ret_idx ) & 0xff]; + ret_idx = perm_c[( idx_z + ret_idx ) & 0xff]; + return impulse_xcoords[ret_idx]; + +} + +fltx4 NoiseSIMD( const fltx4 & x, const fltx4 & y, const fltx4 & z ) +{ + // use magic to convert to integer index + fltx4 x_idx = AndSIMD( MASK255, AddSIMD( x, Four_MagicNumbers ) ); + fltx4 y_idx = AndSIMD( MASK255, AddSIMD( y, Four_MagicNumbers ) ); + fltx4 z_idx = AndSIMD( MASK255, AddSIMD( z, Four_MagicNumbers ) ); + + fltx4 lattice000 = Four_Zeros, lattice001 = Four_Zeros, lattice010 = Four_Zeros, lattice011 = Four_Zeros; + fltx4 lattice100 = Four_Zeros, lattice101 = Four_Zeros, lattice110 = Four_Zeros, lattice111 = Four_Zeros; + + // FIXME: Converting the input vectors to int indices will cause load-hit-stores (48 bytes) + // Converting the indexed noise values back to vectors will cause more (128 bytes) + // The noise table could store vectors if we chunked it into 2x2x2 blocks. + fltx4 xfrac = Four_Zeros, yfrac = Four_Zeros, zfrac = Four_Zeros; +#define DOPASS(i) \ + { unsigned int xi = SubInt( x_idx, i ); \ + unsigned int yi = SubInt( y_idx, i ); \ + unsigned int zi = SubInt( z_idx, i ); \ + SubFloat( xfrac, i ) = (xi & 0xff)*(1.0/256.0); \ + SubFloat( yfrac, i ) = (yi & 0xff)*(1.0/256.0); \ + SubFloat( zfrac, i ) = (zi & 0xff)*(1.0/256.0); \ + xi>>=8; \ + yi>>=8; \ + zi>>=8; \ + \ + SubFloat( lattice000, i ) = GetLatticePointValue( xi,yi,zi ); \ + SubFloat( lattice001, i ) = GetLatticePointValue( xi,yi,zi+1 ); \ + SubFloat( lattice010, i ) = GetLatticePointValue( xi,yi+1,zi ); \ + SubFloat( lattice011, i ) = GetLatticePointValue( xi,yi+1,zi+1 ); \ + SubFloat( lattice100, i ) = GetLatticePointValue( xi+1,yi,zi ); \ + SubFloat( lattice101, i ) = GetLatticePointValue( xi+1,yi,zi+1 ); \ + SubFloat( lattice110, i ) = GetLatticePointValue( xi+1,yi+1,zi ); \ + SubFloat( lattice111, i ) = GetLatticePointValue( xi+1,yi+1,zi+1 ); \ + } + + DOPASS( 0 ); + DOPASS( 1 ); + DOPASS( 2 ); + DOPASS( 3 ); + + // now, we have 8 lattice values for each of four points as m128s, and interpolant values for + // each axis in m128 form in [xyz]frac. Perfom the trilinear interpolation as SIMD ops + + // first, do x interpolation + fltx4 l2d00 = AddSIMD( lattice000, MulSIMD( xfrac, SubSIMD( lattice100, lattice000 ) ) ); + fltx4 l2d01 = AddSIMD( lattice001, MulSIMD( xfrac, SubSIMD( lattice101, lattice001 ) ) ); + fltx4 l2d10 = AddSIMD( lattice010, MulSIMD( xfrac, SubSIMD( lattice110, lattice010 ) ) ); + fltx4 l2d11 = AddSIMD( lattice011, MulSIMD( xfrac, SubSIMD( lattice111, lattice011 ) ) ); + + // now, do y interpolation + fltx4 l1d0 = AddSIMD( l2d00, MulSIMD( yfrac, SubSIMD( l2d10, l2d00 ) ) ); + fltx4 l1d1 = AddSIMD( l2d01, MulSIMD( yfrac, SubSIMD( l2d11, l2d01 ) ) ); + + // final z interpolation + fltx4 rslt = AddSIMD( l1d0, MulSIMD( zfrac, SubSIMD( l1d1, l1d0 ) ) ); + + // map to 0..1 + return MulSIMD( Four_Twos, SubSIMD( rslt, Four_PointFives ) ); + + +} + +fltx4 NoiseSIMD( FourVectors const &pos ) +{ + return NoiseSIMD( pos.x, pos.y, pos.z ); +} |