mirror of
https://github.com/copyrighttxt/watrbx-game-engine.git
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155 lines
3.4 KiB
C++
155 lines
3.4 KiB
C++
#pragma once
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// SIMD common platform independent implementation
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#include "simd/simd.h"
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namespace RBX
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{
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namespace simd
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{
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namespace details
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{
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RBX_SIMD_INLINE v4f inverseEstimate0Precision( )
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{
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return splat( 3e-04f );
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}
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RBX_SIMD_INLINE v4f inverseEstimate1Precision( )
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{
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return splat( 2e-07f );
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}
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RBX_SIMD_INLINE v4f inverseSqrtEstimate0Precision( )
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{
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return splat( 3.3e-05f );
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}
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RBX_SIMD_INLINE v4f inverseSqrtEstimate1Precision( )
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{
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return splat( 3e-07f );
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}
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}
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RBX_SIMD_INLINE v4f sumAcross2( v4fArg a, v4fArg b, v4fArg c )
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{
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return sumAcross2( a, b, c, c );
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}
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RBX_SIMD_INLINE v4f sumAcross3( v4fArg a, v4fArg b, v4fArg c )
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{
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return sumAcross3( a, b, c, c );
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}
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RBX_SIMD_INLINE v4f sumAcross4( v4fArg a, v4fArg b, v4fArg c )
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{
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return sumAcross4( a, b, c, c );
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}
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RBX_SIMD_INLINE v4f sumAcross2( v4fArg a, v4fArg b, v4fArg c, v4fArg d )
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{
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v4f a0c0a1c1 = zipLow( a, c );
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v4f b0d0b1d1 = zipLow( b, d );
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v4f a0b0c0d0, a1b1c1d1;
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zip( a0b0c0d0, a1b1c1d1, a0c0a1c1, b0d0b1d1 );
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v4f sum = a0b0c0d0 + a1b1c1d1;
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return sum;
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}
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RBX_SIMD_INLINE v4f sumAcross3( v4fArg a, v4fArg b, v4fArg c, v4fArg d )
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{
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v4f a0c0a1c1, a2c2xxxx;
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zip( a0c0a1c1, a2c2xxxx, a, c );
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v4f b0d0b1d1, b2d2xxxx;
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zip( b0d0b1d1, b2d2xxxx, b, d );
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v4f a0b0c0d0, a1b1c1d1;
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zip( a0b0c0d0, a1b1c1d1, a0c0a1c1, b0d0b1d1 );
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v4f sum = a0b0c0d0 + a1b1c1d1;
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v4f a2b2c2d2 = zipLow( a2c2xxxx, b2d2xxxx );
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sum = sum + a2b2c2d2;
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return sum;
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}
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RBX_SIMD_INLINE v4f sumAcross4( v4fArg a, v4fArg b, v4fArg c, v4fArg d )
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{
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v4f a0c0a1c1, a2c2a3c3;
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zip( a0c0a1c1, a2c2a3c3, a, c );
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v4f b0d0b1d1, b2d2b3d3;
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zip( b0d0b1d1, b2d2b3d3, b, d );
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v4f a0b0c0d0, a1b1c1d1;
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zip( a0b0c0d0, a1b1c1d1, a0c0a1c1, b0d0b1d1 );
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v4f sum = a0b0c0d0 + a1b1c1d1;
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v4f a2b2c2d2, a3b3c3d3;
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zip( a2b2c2d2, a3b3c3d3, a2c2a3c3, b2d2b3d3 );
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sum = sum + ( a2b2c2d2 + a3b3c3d3 );
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return sum;
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}
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template< class T >
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RBX_SIMD_INLINE void transpose( T& a, T& b, T& c, T& d, const T& x, const T& y, const T& z, const T& w )
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{
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T x0z0x1z1, x2z2x3z3;
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zip( x0z0x1z1, x2z2x3z3, x, z );
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T y0w0y1w1, y2w2y3w3;
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zip( y0w0y1w1, y2w2y3w3, y, w );
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zip( a, b, x0z0x1z1, y0w0y1w1 );
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zip( c, d, x2z2x3z3, y2w2y3w3 );
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}
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template< class T >
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RBX_SIMD_INLINE void transpose4x3( T& x, T& y, T& z, const T& a, const T& b, const T& c, const T& d )
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{
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T dummy;
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transpose( x, y, z, dummy, a, b, c, d );
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}
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template< class T >
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RBX_SIMD_INLINE void transpose3x4( T& a, T& b, T& c, T& d, const T& x, const T& y, const T& z )
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{
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transpose(a, b, c, d, x, y, z, z);
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}
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template< class T >
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RBX_SIMD_INLINE void transpose4x2( T& x, T& y, const T& a, const T& b, const T& c, const T& d )
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{
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T t0 = zipLow( a, c );
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T t1 = zipLow( b, d );
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zip( x, y, t0, t1 );
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}
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template< class T >
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RBX_SIMD_INLINE void transpose2x4( T& a, T& b, T& c, T& d, const T& x, const T& y )
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{
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zip( a, c, x, y );
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b = moveHighLow( a, a );
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d = moveHighLow( c, c );
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}
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template< class T >
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RBX_SIMD_INLINE T gatherX( const T& a, const T& b, const T& c, const T& d )
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{
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T t0 = zipLow( a, c );
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T t1 = zipLow( b, d );
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return zipLow( t0, t1 );
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}
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template< class T >
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RBX_SIMD_INLINE T gatherX( const T& a, const T& b, const T& c )
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{
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T t0 = zipLow( a, c );
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return zipLow( t0, b );
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}
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template< class T >
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RBX_SIMD_INLINE T gatherX( const T& a, const T& b )
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{
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return zipLow( a, b );
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}
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}
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}
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