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Base/include/simd/simd_common.inl

@@ -0,0 +1,154 @@
+#pragma once
+
+// SIMD common platform independent implementation 
+
+#include "simd/simd.h"
+
+namespace RBX
+{
+
+namespace simd
+{
+
+namespace details
+{
+    RBX_SIMD_INLINE v4f inverseEstimate0Precision( )
+    {
+        return splat( 3e-04f );
+    }
+
+    RBX_SIMD_INLINE v4f inverseEstimate1Precision( )
+    {
+        return splat( 2e-07f );
+    }
+    
+    RBX_SIMD_INLINE v4f inverseSqrtEstimate0Precision( )
+    {
+        return splat( 3.3e-05f );
+    }
+
+    RBX_SIMD_INLINE v4f inverseSqrtEstimate1Precision( )
+    {
+        return splat( 3e-07f );
+    }
+}
+
+RBX_SIMD_INLINE v4f sumAcross2( v4fArg a, v4fArg b, v4fArg c )
+{
+    return sumAcross2( a, b, c, c );
+}
+
+RBX_SIMD_INLINE v4f sumAcross3( v4fArg a, v4fArg b, v4fArg c )
+{
+    return sumAcross3( a, b, c, c );
+}
+
+RBX_SIMD_INLINE v4f sumAcross4( v4fArg a, v4fArg b, v4fArg c )
+{
+    return sumAcross4( a, b, c, c );
+}
+
+RBX_SIMD_INLINE v4f sumAcross2( v4fArg a, v4fArg b, v4fArg c, v4fArg d )
+{
+    v4f a0c0a1c1 = zipLow( a, c );
+    v4f b0d0b1d1 = zipLow( b, d );
+    v4f a0b0c0d0, a1b1c1d1;
+    zip( a0b0c0d0, a1b1c1d1, a0c0a1c1, b0d0b1d1 );
+    v4f sum = a0b0c0d0 + a1b1c1d1;
+    return sum;
+}
+
+RBX_SIMD_INLINE v4f sumAcross3( v4fArg a, v4fArg b, v4fArg c, v4fArg d )
+{
+    v4f a0c0a1c1, a2c2xxxx;
+    zip( a0c0a1c1, a2c2xxxx, a, c );
+    v4f b0d0b1d1, b2d2xxxx;
+    zip( b0d0b1d1, b2d2xxxx, b, d );
+    v4f a0b0c0d0, a1b1c1d1;
+    zip( a0b0c0d0, a1b1c1d1, a0c0a1c1, b0d0b1d1 );
+    v4f sum = a0b0c0d0 + a1b1c1d1;
+    v4f a2b2c2d2 = zipLow( a2c2xxxx, b2d2xxxx );
+    sum = sum + a2b2c2d2;
+    return sum;
+}
+
+RBX_SIMD_INLINE v4f sumAcross4( v4fArg a, v4fArg b, v4fArg c, v4fArg d )
+{
+    v4f a0c0a1c1, a2c2a3c3;
+    zip( a0c0a1c1, a2c2a3c3, a, c );
+    v4f b0d0b1d1, b2d2b3d3;
+    zip( b0d0b1d1, b2d2b3d3, b, d );
+    v4f a0b0c0d0, a1b1c1d1;
+    zip( a0b0c0d0, a1b1c1d1, a0c0a1c1, b0d0b1d1 );
+    v4f sum = a0b0c0d0 + a1b1c1d1;
+    v4f a2b2c2d2, a3b3c3d3;
+    zip( a2b2c2d2, a3b3c3d3, a2c2a3c3, b2d2b3d3 );
+    sum = sum + ( a2b2c2d2 + a3b3c3d3 );
+    return sum;
+}
+
+template< class T >
+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 )
+{
+    T x0z0x1z1, x2z2x3z3;
+    zip( x0z0x1z1, x2z2x3z3, x, z );
+    T y0w0y1w1, y2w2y3w3;
+    zip( y0w0y1w1, y2w2y3w3, y, w );
+
+    zip( a, b, x0z0x1z1, y0w0y1w1 );
+    zip( c, d, x2z2x3z3, y2w2y3w3 );
+}
+
+template< class T >
+RBX_SIMD_INLINE void transpose4x3( T& x, T& y, T& z, const T& a, const T& b, const T& c, const T& d )
+{
+    T dummy;
+    transpose( x, y, z, dummy, a, b, c, d );
+}
+
+template< class T >
+RBX_SIMD_INLINE void transpose3x4( T& a, T& b, T& c, T& d, const T& x, const T& y, const T& z )
+{
+    transpose(a, b, c, d, x, y, z, z);
+}
+
+template< class T >
+RBX_SIMD_INLINE void transpose4x2( T& x, T& y, const T& a, const T& b, const T& c, const T& d )
+{
+    T t0 = zipLow( a, c );
+    T t1 = zipLow( b, d );
+    zip( x, y, t0, t1 );
+}
+
+template< class T >
+RBX_SIMD_INLINE void transpose2x4( T& a, T& b, T& c, T& d, const T& x, const T& y )
+{
+    zip( a, c, x, y );
+    b = moveHighLow( a, a );
+    d = moveHighLow( c, c );
+}
+
+template< class T >
+RBX_SIMD_INLINE T gatherX( const T& a, const T& b, const T& c, const T& d )
+{
+    T t0 = zipLow( a, c );
+    T t1 = zipLow( b, d );
+    return zipLow( t0, t1 );
+}
+
+template< class T >
+RBX_SIMD_INLINE T gatherX( const T& a, const T& b, const T& c )
+{
+    T t0 = zipLow( a, c );
+    return zipLow( t0, b );
+}
+
+template< class T >
+RBX_SIMD_INLINE T gatherX( const T& a, const T& b )
+{
+    return zipLow( a, b );
+}
+
+}
+
+}