//========= Copyright Valve Corporation, All rights reserved. ============// // // Purpose: - defines SIMD "structure of arrays" classes and functions. // //===========================================================================// #ifndef SSEMATH_H #define SSEMATH_H #if defined( _X360 ) #include #elif defined(__arm__) || defined(__aarch64__) #include "sse2neon.h" #else #include #endif #include #include #if defined(GNUC) #define USE_STDC_FOR_SIMD 0 #else #define USE_STDC_FOR_SIMD 0 #endif #if !(defined(_X360) && (USE_STDC_FOR_SIMD == 0)) #define _SSE1 1 #endif // I thought about defining a class/union for the SIMD packed floats instead of using fltx4, // but decided against it because (a) the nature of SIMD code which includes comparisons is to blur // the relationship between packed floats and packed integer types and (b) not sure that the // compiler would handle generating good code for the intrinsics. #if USE_STDC_FOR_SIMD typedef union { float m128_f32[4]; uint32 m128_u32[4]; } fltx4; typedef fltx4 i32x4; typedef fltx4 u32x4; #elif ( defined( _X360 ) ) typedef union { // This union allows float/int access (which generally shouldn't be done in inner loops) __vector4 vmx; float m128_f32[4]; uint32 m128_u32[4]; } fltx4_union; typedef __vector4 fltx4; typedef __vector4 i32x4; // a VMX register; just a way of making it explicit that we're doing integer ops. typedef __vector4 u32x4; // a VMX register; just a way of making it explicit that we're doing unsigned integer ops. #else typedef __m128 fltx4; typedef __m128 i32x4; typedef __m128 u32x4; #endif // The FLTX4 type is a fltx4 used as a parameter to a function. // On the 360, the best way to do this is pass-by-copy on the registers. // On the PC, the best way is to pass by const reference. // The compiler will sometimes, but not always, replace a pass-by-const-ref // with a pass-in-reg on the 360; to avoid this confusion, you can // explicitly use a FLTX4 as the parameter type. #ifdef _X360 typedef __vector4 FLTX4; #else typedef const fltx4 & FLTX4; #endif // A 16-byte aligned int32 datastructure // (for use when writing out fltx4's as SIGNED // ints). struct ALIGN16 intx4 { int32 m_i32[4]; inline int & operator[](int which) { return m_i32[which]; } inline const int & operator[](int which) const { return m_i32[which]; } inline int32 *Base() { return m_i32; } inline const int32 *Base() const { return m_i32; } inline const bool operator==(const intx4 &other) const { return m_i32[0] == other.m_i32[0] && m_i32[1] == other.m_i32[1] && m_i32[2] == other.m_i32[2] && m_i32[3] == other.m_i32[3] ; } } ALIGN16_POST; #if defined( _DEBUG ) && defined( _X360 ) FORCEINLINE void TestVPUFlags() { // Check that the VPU is in the appropriate (Java-compliant) mode (see 3.2.1 in altivec_pem.pdf on xds.xbox.com) __vector4 a; __asm { mfvscr a; } unsigned int * flags = (unsigned int *)&a; unsigned int controlWord = flags[3]; Assert(controlWord == 0); } #else // _DEBUG FORCEINLINE void TestVPUFlags() {} #endif // _DEBUG // useful constants in SIMD packed float format: // (note: some of these aren't stored on the 360, // but are manufactured directly in one or two // instructions, saving a load and possible L2 // miss.) #ifndef _X360 extern const fltx4 Four_Zeros; // 0 0 0 0 extern const fltx4 Four_Ones; // 1 1 1 1 extern const fltx4 Four_Twos; // 2 2 2 2 extern const fltx4 Four_Threes; // 3 3 3 3 extern const fltx4 Four_Fours; // guess. extern const fltx4 Four_Point225s; // .225 .225 .225 .225 extern const fltx4 Four_PointFives; // .5 .5 .5 .5 extern const fltx4 Four_Epsilons; // FLT_EPSILON FLT_EPSILON FLT_EPSILON FLT_EPSILON extern const fltx4 Four_2ToThe21s; // (1<<21).. extern const fltx4 Four_2ToThe22s; // (1<<22).. extern const fltx4 Four_2ToThe23s; // (1<<23).. extern const fltx4 Four_2ToThe24s; // (1<<24).. extern const fltx4 Four_Origin; // 0 0 0 1 (origin point, like vr0 on the PS2) extern const fltx4 Four_NegativeOnes; // -1 -1 -1 -1 #else #define Four_Zeros XMVectorZero() // 0 0 0 0 #define Four_Ones XMVectorSplatOne() // 1 1 1 1 extern const fltx4 Four_Twos; // 2 2 2 2 extern const fltx4 Four_Threes; // 3 3 3 3 extern const fltx4 Four_Fours; // guess. extern const fltx4 Four_Point225s; // .225 .225 .225 .225 extern const fltx4 Four_PointFives; // .5 .5 .5 .5 extern const fltx4 Four_Epsilons; // FLT_EPSILON FLT_EPSILON FLT_EPSILON FLT_EPSILON extern const fltx4 Four_2ToThe21s; // (1<<21).. extern const fltx4 Four_2ToThe22s; // (1<<22).. extern const fltx4 Four_2ToThe23s; // (1<<23).. extern const fltx4 Four_2ToThe24s; // (1<<24).. extern const fltx4 Four_Origin; // 0 0 0 1 (origin point, like vr0 on the PS2) extern const fltx4 Four_NegativeOnes; // -1 -1 -1 -1 #endif extern const fltx4 Four_FLT_MAX; // FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX extern const fltx4 Four_Negative_FLT_MAX; // -FLT_MAX, -FLT_MAX, -FLT_MAX, -FLT_MAX extern const fltx4 g_SIMD_0123; // 0 1 2 3 as float // external aligned integer constants extern const ALIGN16 uint32 g_SIMD_clear_signmask[] ALIGN16_POST; // 0x7fffffff x 4 extern const ALIGN16 uint32 g_SIMD_signmask[] ALIGN16_POST; // 0x80000000 x 4 extern const ALIGN16 uint32 g_SIMD_lsbmask[] ALIGN16_POST; // 0xfffffffe x 4 extern const ALIGN16 uint32 g_SIMD_clear_wmask[] ALIGN16_POST; // -1 -1 -1 0 extern const ALIGN16 uint32 g_SIMD_ComponentMask[4][4] ALIGN16_POST; // [0xFFFFFFFF 0 0 0], [0 0xFFFFFFFF 0 0], [0 0 0xFFFFFFFF 0], [0 0 0 0xFFFFFFFF] extern const ALIGN16 uint32 g_SIMD_AllOnesMask[] ALIGN16_POST; // ~0,~0,~0,~0 extern const ALIGN16 uint32 g_SIMD_Low16BitsMask[] ALIGN16_POST; // 0xffff x 4 // this mask is used for skipping the tail of things. If you have N elements in an array, and wish // to mask out the tail, g_SIMD_SkipTailMask[N & 3] what you want to use for the last iteration. extern const uint32 ALIGN16 g_SIMD_SkipTailMask[4][4] ALIGN16_POST; // Define prefetch macros. // The characteristics of cache and prefetch are completely // different between the different platforms, so you DO NOT // want to just define one macro that maps to every platform // intrinsic under the hood -- you need to prefetch at different // intervals between x86 and PPC, for example, and that is // a higher level code change. // On the other hand, I'm tired of typing #ifdef _X360 // all over the place, so this is just a nop on Intel, PS3. #ifdef _X360 #define PREFETCH360(address, offset) __dcbt(offset,address) #else #define PREFETCH360(x,y) // nothing #endif #if USE_STDC_FOR_SIMD //--------------------------------------------------------------------- // Standard C (fallback/Linux) implementation (only there for compat - slow) //--------------------------------------------------------------------- FORCEINLINE float SubFloat( const fltx4 & a, int idx ) { return a.m128_f32[ idx ]; } FORCEINLINE float & SubFloat( fltx4 & a, int idx ) { return a.m128_f32[idx]; } FORCEINLINE uint32 SubInt( const fltx4 & a, int idx ) { return a.m128_u32[idx]; } FORCEINLINE uint32 & SubInt( fltx4 & a, int idx ) { return a.m128_u32[idx]; } // Return one in the fastest way -- on the x360, faster even than loading. FORCEINLINE fltx4 LoadZeroSIMD( void ) { return Four_Zeros; } // Return one in the fastest way -- on the x360, faster even than loading. FORCEINLINE fltx4 LoadOneSIMD( void ) { return Four_Ones; } FORCEINLINE fltx4 SplatXSIMD( const fltx4 & a ) { fltx4 retVal; SubFloat( retVal, 0 ) = SubFloat( a, 0 ); SubFloat( retVal, 1 ) = SubFloat( a, 0 ); SubFloat( retVal, 2 ) = SubFloat( a, 0 ); SubFloat( retVal, 3 ) = SubFloat( a, 0 ); return retVal; } FORCEINLINE fltx4 SplatYSIMD( fltx4 a ) { fltx4 retVal; SubFloat( retVal, 0 ) = SubFloat( a, 1 ); SubFloat( retVal, 1 ) = SubFloat( a, 1 ); SubFloat( retVal, 2 ) = SubFloat( a, 1 ); SubFloat( retVal, 3 ) = SubFloat( a, 1 ); return retVal; } FORCEINLINE fltx4 SplatZSIMD( fltx4 a ) { fltx4 retVal; SubFloat( retVal, 0 ) = SubFloat( a, 2 ); SubFloat( retVal, 1 ) = SubFloat( a, 2 ); SubFloat( retVal, 2 ) = SubFloat( a, 2 ); SubFloat( retVal, 3 ) = SubFloat( a, 2 ); return retVal; } FORCEINLINE fltx4 SplatWSIMD( fltx4 a ) { fltx4 retVal; SubFloat( retVal, 0 ) = SubFloat( a, 3 ); SubFloat( retVal, 1 ) = SubFloat( a, 3 ); SubFloat( retVal, 2 ) = SubFloat( a, 3 ); SubFloat( retVal, 3 ) = SubFloat( a, 3 ); return retVal; } FORCEINLINE fltx4 SetXSIMD( const fltx4& a, const fltx4& x ) { fltx4 result = a; SubFloat( result, 0 ) = SubFloat( x, 0 ); return result; } FORCEINLINE fltx4 SetYSIMD( const fltx4& a, const fltx4& y ) { fltx4 result = a; SubFloat( result, 1 ) = SubFloat( y, 1 ); return result; } FORCEINLINE fltx4 SetZSIMD( const fltx4& a, const fltx4& z ) { fltx4 result = a; SubFloat( result, 2 ) = SubFloat( z, 2 ); return result; } FORCEINLINE fltx4 SetWSIMD( const fltx4& a, const fltx4& w ) { fltx4 result = a; SubFloat( result, 3 ) = SubFloat( w, 3 ); return result; } FORCEINLINE fltx4 SetComponentSIMD( const fltx4& a, int nComponent, float flValue ) { fltx4 result = a; SubFloat( result, nComponent ) = flValue; return result; } // a b c d -> b c d a FORCEINLINE fltx4 RotateLeft( const fltx4 & a ) { fltx4 retVal; SubFloat( retVal, 0 ) = SubFloat( a, 1 ); SubFloat( retVal, 1 ) = SubFloat( a, 2 ); SubFloat( retVal, 2 ) = SubFloat( a, 3 ); SubFloat( retVal, 3 ) = SubFloat( a, 0 ); return retVal; } // a b c d -> c d a b FORCEINLINE fltx4 RotateLeft2( const fltx4 & a ) { fltx4 retVal; SubFloat( retVal, 0 ) = SubFloat( a, 2 ); SubFloat( retVal, 1 ) = SubFloat( a, 3 ); SubFloat( retVal, 2 ) = SubFloat( a, 0 ); SubFloat( retVal, 3 ) = SubFloat( a, 1 ); return retVal; } #define BINOP(op) \ fltx4 retVal; \ SubFloat( retVal, 0 ) = ( SubFloat( a, 0 ) op SubFloat( b, 0 ) ); \ SubFloat( retVal, 1 ) = ( SubFloat( a, 1 ) op SubFloat( b, 1 ) ); \ SubFloat( retVal, 2 ) = ( SubFloat( a, 2 ) op SubFloat( b, 2 ) ); \ SubFloat( retVal, 3 ) = ( SubFloat( a, 3 ) op SubFloat( b, 3 ) ); \ return retVal; #define IBINOP(op) \ fltx4 retVal; \ SubInt( retVal, 0 ) = ( SubInt( a, 0 ) op SubInt ( b, 0 ) ); \ SubInt( retVal, 1 ) = ( SubInt( a, 1 ) op SubInt ( b, 1 ) ); \ SubInt( retVal, 2 ) = ( SubInt( a, 2 ) op SubInt ( b, 2 ) ); \ SubInt( retVal, 3 ) = ( SubInt( a, 3 ) op SubInt ( b, 3 ) ); \ return retVal; FORCEINLINE fltx4 AddSIMD( const fltx4 & a, const fltx4 & b ) { BINOP(+); } FORCEINLINE fltx4 SubSIMD( const fltx4 & a, const fltx4 & b ) // a-b { BINOP(-); }; FORCEINLINE fltx4 MulSIMD( const fltx4 & a, const fltx4 & b ) // a*b { BINOP(*); } FORCEINLINE fltx4 DivSIMD( const fltx4 & a, const fltx4 & b ) // a/b { BINOP(/); } FORCEINLINE fltx4 MaddSIMD( const fltx4 & a, const fltx4 & b, const fltx4 & c ) // a*b + c { return AddSIMD( MulSIMD(a,b), c ); } FORCEINLINE fltx4 MsubSIMD( const fltx4 & a, const fltx4 & b, const fltx4 & c ) // c - a*b { return SubSIMD( c, MulSIMD(a,b) ); }; FORCEINLINE fltx4 SinSIMD( const fltx4 &radians ) { fltx4 result; SubFloat( result, 0 ) = sin( SubFloat( radians, 0 ) ); SubFloat( result, 1 ) = sin( SubFloat( radians, 1 ) ); SubFloat( result, 2 ) = sin( SubFloat( radians, 2 ) ); SubFloat( result, 3 ) = sin( SubFloat( radians, 3 ) ); return result; } FORCEINLINE void SinCos3SIMD( fltx4 &sine, fltx4 &cosine, const fltx4 &radians ) { SinCos( SubFloat( radians, 0 ), &SubFloat( sine, 0 ), &SubFloat( cosine, 0 ) ); SinCos( SubFloat( radians, 1 ), &SubFloat( sine, 1 ), &SubFloat( cosine, 1 ) ); SinCos( SubFloat( radians, 2 ), &SubFloat( sine, 2 ), &SubFloat( cosine, 2 ) ); } FORCEINLINE void SinCosSIMD( fltx4 &sine, fltx4 &cosine, const fltx4 &radians ) { SinCos( SubFloat( radians, 0 ), &SubFloat( sine, 0 ), &SubFloat( cosine, 0 ) ); SinCos( SubFloat( radians, 1 ), &SubFloat( sine, 1 ), &SubFloat( cosine, 1 ) ); SinCos( SubFloat( radians, 2 ), &SubFloat( sine, 2 ), &SubFloat( cosine, 2 ) ); SinCos( SubFloat( radians, 3 ), &SubFloat( sine, 3 ), &SubFloat( cosine, 3 ) ); } FORCEINLINE fltx4 ArcSinSIMD( const fltx4 &sine ) { fltx4 result; SubFloat( result, 0 ) = asin( SubFloat( sine, 0 ) ); SubFloat( result, 1 ) = asin( SubFloat( sine, 1 ) ); SubFloat( result, 2 ) = asin( SubFloat( sine, 2 ) ); SubFloat( result, 3 ) = asin( SubFloat( sine, 3 ) ); return result; } FORCEINLINE fltx4 ArcCosSIMD( const fltx4 &cs ) { fltx4 result; SubFloat( result, 0 ) = acos( SubFloat( cs, 0 ) ); SubFloat( result, 1 ) = acos( SubFloat( cs, 1 ) ); SubFloat( result, 2 ) = acos( SubFloat( cs, 2 ) ); SubFloat( result, 3 ) = acos( SubFloat( cs, 3 ) ); return result; } // tan^1(a/b) .. ie, pass sin in as a and cos in as b FORCEINLINE fltx4 ArcTan2SIMD( const fltx4 &a, const fltx4 &b ) { fltx4 result; SubFloat( result, 0 ) = atan2( SubFloat( a, 0 ), SubFloat( b, 0 ) ); SubFloat( result, 1 ) = atan2( SubFloat( a, 1 ), SubFloat( b, 1 ) ); SubFloat( result, 2 ) = atan2( SubFloat( a, 2 ), SubFloat( b, 2 ) ); SubFloat( result, 3 ) = atan2( SubFloat( a, 3 ), SubFloat( b, 3 ) ); return result; } FORCEINLINE fltx4 MaxSIMD( const fltx4 & a, const fltx4 & b ) // max(a,b) { fltx4 retVal; SubFloat( retVal, 0 ) = max( SubFloat( a, 0 ), SubFloat( b, 0 ) ); SubFloat( retVal, 1 ) = max( SubFloat( a, 1 ), SubFloat( b, 1 ) ); SubFloat( retVal, 2 ) = max( SubFloat( a, 2 ), SubFloat( b, 2 ) ); SubFloat( retVal, 3 ) = max( SubFloat( a, 3 ), SubFloat( b, 3 ) ); return retVal; } FORCEINLINE fltx4 MinSIMD( const fltx4 & a, const fltx4 & b ) // min(a,b) { fltx4 retVal; SubFloat( retVal, 0 ) = min( SubFloat( a, 0 ), SubFloat( b, 0 ) ); SubFloat( retVal, 1 ) = min( SubFloat( a, 1 ), SubFloat( b, 1 ) ); SubFloat( retVal, 2 ) = min( SubFloat( a, 2 ), SubFloat( b, 2 ) ); SubFloat( retVal, 3 ) = min( SubFloat( a, 3 ), SubFloat( b, 3 ) ); return retVal; } FORCEINLINE fltx4 AndSIMD( const fltx4 & a, const fltx4 & b ) // a & b { IBINOP(&); } FORCEINLINE fltx4 AndNotSIMD( const fltx4 & a, const fltx4 & b ) // ~a & b { fltx4 retVal; SubInt( retVal, 0 ) = ~SubInt( a, 0 ) & SubInt( b, 0 ); SubInt( retVal, 1 ) = ~SubInt( a, 1 ) & SubInt( b, 1 ); SubInt( retVal, 2 ) = ~SubInt( a, 2 ) & SubInt( b, 2 ); SubInt( retVal, 3 ) = ~SubInt( a, 3 ) & SubInt( b, 3 ); return retVal; } FORCEINLINE fltx4 XorSIMD( const fltx4 & a, const fltx4 & b ) // a ^ b { IBINOP(^); } FORCEINLINE fltx4 OrSIMD( const fltx4 & a, const fltx4 & b ) // a | b { IBINOP(|); } FORCEINLINE fltx4 NegSIMD(const fltx4 &a) // negate: -a { fltx4 retval; SubFloat( retval, 0 ) = -SubFloat( a, 0 ); SubFloat( retval, 1 ) = -SubFloat( a, 1 ); SubFloat( retval, 2 ) = -SubFloat( a, 2 ); SubFloat( retval, 3 ) = -SubFloat( a, 3 ); return retval; } FORCEINLINE bool IsAllZeros( const fltx4 & a ) // all floats of a zero? { return ( SubFloat( a, 0 ) == 0.0 ) && ( SubFloat( a, 1 ) == 0.0 ) && ( SubFloat( a, 2 ) == 0.0 ) && ( SubFloat( a, 3 ) == 0.0 ) ; } // for branching when a.xyzw > b.xyzw FORCEINLINE bool IsAllGreaterThan( const fltx4 &a, const fltx4 &b ) { return SubFloat(a,0) > SubFloat(b,0) && SubFloat(a,1) > SubFloat(b,1) && SubFloat(a,2) > SubFloat(b,2) && SubFloat(a,3) > SubFloat(b,3); } // for branching when a.xyzw >= b.xyzw FORCEINLINE bool IsAllGreaterThanOrEq( const fltx4 &a, const fltx4 &b ) { return SubFloat(a,0) >= SubFloat(b,0) && SubFloat(a,1) >= SubFloat(b,1) && SubFloat(a,2) >= SubFloat(b,2) && SubFloat(a,3) >= SubFloat(b,3); } // For branching if all a.xyzw == b.xyzw FORCEINLINE bool IsAllEqual( const fltx4 & a, const fltx4 & b ) { return SubFloat(a,0) == SubFloat(b,0) && SubFloat(a,1) == SubFloat(b,1) && SubFloat(a,2) == SubFloat(b,2) && SubFloat(a,3) == SubFloat(b,3); } FORCEINLINE int TestSignSIMD( const fltx4 & a ) // mask of which floats have the high bit set { int nRet = 0; nRet |= ( SubInt( a, 0 ) & 0x80000000 ) >> 31; // sign(x) -> bit 0 nRet |= ( SubInt( a, 1 ) & 0x80000000 ) >> 30; // sign(y) -> bit 1 nRet |= ( SubInt( a, 2 ) & 0x80000000 ) >> 29; // sign(z) -> bit 2 nRet |= ( SubInt( a, 3 ) & 0x80000000 ) >> 28; // sign(w) -> bit 3 return nRet; } FORCEINLINE bool IsAnyNegative( const fltx4 & a ) // (a.x < 0) || (a.y < 0) || (a.z < 0) || (a.w < 0) { return (0 != TestSignSIMD( a )); } FORCEINLINE fltx4 CmpEqSIMD( const fltx4 & a, const fltx4 & b ) // (a==b) ? ~0:0 { fltx4 retVal; SubInt( retVal, 0 ) = ( SubFloat( a, 0 ) == SubFloat( b, 0 )) ? ~0 : 0; SubInt( retVal, 1 ) = ( SubFloat( a, 1 ) == SubFloat( b, 1 )) ? ~0 : 0; SubInt( retVal, 2 ) = ( SubFloat( a, 2 ) == SubFloat( b, 2 )) ? ~0 : 0; SubInt( retVal, 3 ) = ( SubFloat( a, 3 ) == SubFloat( b, 3 )) ? ~0 : 0; return retVal; } FORCEINLINE fltx4 CmpGtSIMD( const fltx4 & a, const fltx4 & b ) // (a>b) ? ~0:0 { fltx4 retVal; SubInt( retVal, 0 ) = ( SubFloat( a, 0 ) > SubFloat( b, 0 )) ? ~0 : 0; SubInt( retVal, 1 ) = ( SubFloat( a, 1 ) > SubFloat( b, 1 )) ? ~0 : 0; SubInt( retVal, 2 ) = ( SubFloat( a, 2 ) > SubFloat( b, 2 )) ? ~0 : 0; SubInt( retVal, 3 ) = ( SubFloat( a, 3 ) > SubFloat( b, 3 )) ? ~0 : 0; return retVal; } FORCEINLINE fltx4 CmpGeSIMD( const fltx4 & a, const fltx4 & b ) // (a>=b) ? ~0:0 { fltx4 retVal; SubInt( retVal, 0 ) = ( SubFloat( a, 0 ) >= SubFloat( b, 0 )) ? ~0 : 0; SubInt( retVal, 1 ) = ( SubFloat( a, 1 ) >= SubFloat( b, 1 )) ? ~0 : 0; SubInt( retVal, 2 ) = ( SubFloat( a, 2 ) >= SubFloat( b, 2 )) ? ~0 : 0; SubInt( retVal, 3 ) = ( SubFloat( a, 3 ) >= SubFloat( b, 3 )) ? ~0 : 0; return retVal; } FORCEINLINE fltx4 CmpLtSIMD( const fltx4 & a, const fltx4 & b ) // (a= -b) ? ~0 : 0 { fltx4 retVal; SubInt( retVal, 0 ) = ( SubFloat( a, 0 ) <= SubFloat( b, 0 ) && SubFloat( a, 0 ) >= -SubFloat( b, 0 ) ) ? ~0 : 0; SubInt( retVal, 1 ) = ( SubFloat( a, 1 ) <= SubFloat( b, 1 ) && SubFloat( a, 1 ) >= -SubFloat( b, 1 ) ) ? ~0 : 0; SubInt( retVal, 2 ) = ( SubFloat( a, 2 ) <= SubFloat( b, 2 ) && SubFloat( a, 2 ) >= -SubFloat( b, 2 ) ) ? ~0 : 0; SubInt( retVal, 3 ) = ( SubFloat( a, 3 ) <= SubFloat( b, 3 ) && SubFloat( a, 3 ) >= -SubFloat( b, 3 ) ) ? ~0 : 0; return retVal; } FORCEINLINE fltx4 MaskedAssign( const fltx4 & ReplacementMask, const fltx4 & NewValue, const fltx4 & OldValue ) { return OrSIMD( AndSIMD( ReplacementMask, NewValue ), AndNotSIMD( ReplacementMask, OldValue ) ); } FORCEINLINE fltx4 ReplicateX4( float flValue ) // a,a,a,a { fltx4 retVal; SubFloat( retVal, 0 ) = flValue; SubFloat( retVal, 1 ) = flValue; SubFloat( retVal, 2 ) = flValue; SubFloat( retVal, 3 ) = flValue; return retVal; } /// replicate a single 32 bit integer value to all 4 components of an m128 FORCEINLINE fltx4 ReplicateIX4( int nValue ) { fltx4 retVal; SubInt( retVal, 0 ) = nValue; SubInt( retVal, 1 ) = nValue; SubInt( retVal, 2 ) = nValue; SubInt( retVal, 3 ) = nValue; return retVal; } // Round towards positive infinity FORCEINLINE fltx4 CeilSIMD( const fltx4 &a ) { fltx4 retVal; SubFloat( retVal, 0 ) = ceil( SubFloat( a, 0 ) ); SubFloat( retVal, 1 ) = ceil( SubFloat( a, 1 ) ); SubFloat( retVal, 2 ) = ceil( SubFloat( a, 2 ) ); SubFloat( retVal, 3 ) = ceil( SubFloat( a, 3 ) ); return retVal; } // Round towards negative infinity FORCEINLINE fltx4 FloorSIMD( const fltx4 &a ) { fltx4 retVal; SubFloat( retVal, 0 ) = floor( SubFloat( a, 0 ) ); SubFloat( retVal, 1 ) = floor( SubFloat( a, 1 ) ); SubFloat( retVal, 2 ) = floor( SubFloat( a, 2 ) ); SubFloat( retVal, 3 ) = floor( SubFloat( a, 3 ) ); return retVal; } FORCEINLINE fltx4 SqrtEstSIMD( const fltx4 & a ) // sqrt(a), more or less { fltx4 retVal; SubFloat( retVal, 0 ) = sqrt( SubFloat( a, 0 ) ); SubFloat( retVal, 1 ) = sqrt( SubFloat( a, 1 ) ); SubFloat( retVal, 2 ) = sqrt( SubFloat( a, 2 ) ); SubFloat( retVal, 3 ) = sqrt( SubFloat( a, 3 ) ); return retVal; } FORCEINLINE fltx4 SqrtSIMD( const fltx4 & a ) // sqrt(a) { fltx4 retVal; SubFloat( retVal, 0 ) = sqrt( SubFloat( a, 0 ) ); SubFloat( retVal, 1 ) = sqrt( SubFloat( a, 1 ) ); SubFloat( retVal, 2 ) = sqrt( SubFloat( a, 2 ) ); SubFloat( retVal, 3 ) = sqrt( SubFloat( a, 3 ) ); return retVal; } FORCEINLINE fltx4 ReciprocalSqrtEstSIMD( const fltx4 & a ) // 1/sqrt(a), more or less { fltx4 retVal; SubFloat( retVal, 0 ) = 1.0 / sqrt( SubFloat( a, 0 ) ); SubFloat( retVal, 1 ) = 1.0 / sqrt( SubFloat( a, 1 ) ); SubFloat( retVal, 2 ) = 1.0 / sqrt( SubFloat( a, 2 ) ); SubFloat( retVal, 3 ) = 1.0 / sqrt( SubFloat( a, 3 ) ); return retVal; } FORCEINLINE fltx4 ReciprocalSqrtEstSaturateSIMD( const fltx4 & a ) { fltx4 retVal; SubFloat( retVal, 0 ) = 1.0 / sqrt( SubFloat( a, 0 ) != 0.0f ? SubFloat( a, 0 ) : FLT_EPSILON ); SubFloat( retVal, 1 ) = 1.0 / sqrt( SubFloat( a, 1 ) != 0.0f ? SubFloat( a, 1 ) : FLT_EPSILON ); SubFloat( retVal, 2 ) = 1.0 / sqrt( SubFloat( a, 2 ) != 0.0f ? SubFloat( a, 2 ) : FLT_EPSILON ); SubFloat( retVal, 3 ) = 1.0 / sqrt( SubFloat( a, 3 ) != 0.0f ? SubFloat( a, 3 ) : FLT_EPSILON ); return retVal; } FORCEINLINE fltx4 ReciprocalSqrtSIMD( const fltx4 & a ) // 1/sqrt(a) { fltx4 retVal; SubFloat( retVal, 0 ) = 1.0 / sqrt( SubFloat( a, 0 ) ); SubFloat( retVal, 1 ) = 1.0 / sqrt( SubFloat( a, 1 ) ); SubFloat( retVal, 2 ) = 1.0 / sqrt( SubFloat( a, 2 ) ); SubFloat( retVal, 3 ) = 1.0 / sqrt( SubFloat( a, 3 ) ); return retVal; } FORCEINLINE fltx4 ReciprocalEstSIMD( const fltx4 & a ) // 1/a, more or less { fltx4 retVal; SubFloat( retVal, 0 ) = 1.0 / SubFloat( a, 0 ); SubFloat( retVal, 1 ) = 1.0 / SubFloat( a, 1 ); SubFloat( retVal, 2 ) = 1.0 / SubFloat( a, 2 ); SubFloat( retVal, 3 ) = 1.0 / SubFloat( a, 3 ); return retVal; } FORCEINLINE fltx4 ReciprocalSIMD( const fltx4 & a ) // 1/a { fltx4 retVal; SubFloat( retVal, 0 ) = 1.0 / SubFloat( a, 0 ); SubFloat( retVal, 1 ) = 1.0 / SubFloat( a, 1 ); SubFloat( retVal, 2 ) = 1.0 / SubFloat( a, 2 ); SubFloat( retVal, 3 ) = 1.0 / SubFloat( a, 3 ); return retVal; } /// 1/x for all 4 values. /// 1/0 will result in a big but NOT infinite result FORCEINLINE fltx4 ReciprocalEstSaturateSIMD( const fltx4 & a ) { fltx4 retVal; SubFloat( retVal, 0 ) = 1.0 / (SubFloat( a, 0 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 0 )); SubFloat( retVal, 1 ) = 1.0 / (SubFloat( a, 1 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 1 )); SubFloat( retVal, 2 ) = 1.0 / (SubFloat( a, 2 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 2 )); SubFloat( retVal, 3 ) = 1.0 / (SubFloat( a, 3 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 3 )); return retVal; } FORCEINLINE fltx4 ReciprocalSaturateSIMD( const fltx4 & a ) { fltx4 retVal; SubFloat( retVal, 0 ) = 1.0 / (SubFloat( a, 0 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 0 )); SubFloat( retVal, 1 ) = 1.0 / (SubFloat( a, 1 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 1 )); SubFloat( retVal, 2 ) = 1.0 / (SubFloat( a, 2 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 2 )); SubFloat( retVal, 3 ) = 1.0 / (SubFloat( a, 3 ) == 0.0f ? FLT_EPSILON : SubFloat( a, 3 )); return retVal; } // 2^x for all values (the antilog) FORCEINLINE fltx4 ExpSIMD( const fltx4 &toPower ) { fltx4 retVal; SubFloat( retVal, 0 ) = powf( 2, SubFloat(toPower, 0) ); SubFloat( retVal, 1 ) = powf( 2, SubFloat(toPower, 1) ); SubFloat( retVal, 2 ) = powf( 2, SubFloat(toPower, 2) ); SubFloat( retVal, 3 ) = powf( 2, SubFloat(toPower, 3) ); return retVal; } FORCEINLINE fltx4 Dot3SIMD( const fltx4 &a, const fltx4 &b ) { float flDot = SubFloat( a, 0 ) * SubFloat( b, 0 ) + SubFloat( a, 1 ) * SubFloat( b, 1 ) + SubFloat( a, 2 ) * SubFloat( b, 2 ); return ReplicateX4( flDot ); } FORCEINLINE fltx4 Dot4SIMD( const fltx4 &a, const fltx4 &b ) { float flDot = SubFloat( a, 0 ) * SubFloat( b, 0 ) + SubFloat( a, 1 ) * SubFloat( b, 1 ) + SubFloat( a, 2 ) * SubFloat( b, 2 ) + SubFloat( a, 3 ) * SubFloat( b, 3 ); return ReplicateX4( flDot ); } // Clamps the components of a vector to a specified minimum and maximum range. FORCEINLINE fltx4 ClampVectorSIMD( FLTX4 in, FLTX4 min, FLTX4 max) { return MaxSIMD( min, MinSIMD( max, in ) ); } // Squelch the w component of a vector to +0.0. // Most efficient when you say a = SetWToZeroSIMD(a) (avoids a copy) FORCEINLINE fltx4 SetWToZeroSIMD( const fltx4 & a ) { fltx4 retval; retval = a; SubFloat( retval, 0 ) = 0; return retval; } FORCEINLINE fltx4 LoadUnalignedSIMD( const void *pSIMD ) { return *( reinterpret_cast< const fltx4 *> ( pSIMD ) ); } FORCEINLINE fltx4 LoadUnaligned3SIMD( const void *pSIMD ) { return *( reinterpret_cast< const fltx4 *> ( pSIMD ) ); } FORCEINLINE fltx4 LoadAlignedSIMD( const void *pSIMD ) { return *( reinterpret_cast< const fltx4 *> ( pSIMD ) ); } // for the transitional class -- load a 3-by VectorAligned and squash its w component FORCEINLINE fltx4 LoadAlignedSIMD( const VectorAligned & pSIMD ) { fltx4 retval = LoadAlignedSIMD(pSIMD.Base()); // squelch w SubInt( retval, 3 ) = 0; return retval; } FORCEINLINE void StoreAlignedSIMD( float *pSIMD, const fltx4 & a ) { *( reinterpret_cast< fltx4 *> ( pSIMD ) ) = a; } FORCEINLINE void StoreUnalignedSIMD( float *pSIMD, const fltx4 & a ) { *( reinterpret_cast< fltx4 *> ( pSIMD ) ) = a; } FORCEINLINE void StoreUnaligned3SIMD( float *pSIMD, const fltx4 & a ) { *pSIMD = SubFloat(a, 0); *(pSIMD+1) = SubFloat(a, 1); *(pSIMD+2) = SubFloat(a, 2); } // strongly typed -- syntactic castor oil used for typechecking as we transition to SIMD FORCEINLINE void StoreAligned3SIMD( VectorAligned * RESTRICT pSIMD, const fltx4 & a ) { StoreAlignedSIMD(pSIMD->Base(),a); } FORCEINLINE void TransposeSIMD( fltx4 & x, fltx4 & y, fltx4 & z, fltx4 & w ) { #define SWAP_FLOATS( _a_, _ia_, _b_, _ib_ ) { float tmp = SubFloat( _a_, _ia_ ); SubFloat( _a_, _ia_ ) = SubFloat( _b_, _ib_ ); SubFloat( _b_, _ib_ ) = tmp; } SWAP_FLOATS( x, 1, y, 0 ); SWAP_FLOATS( x, 2, z, 0 ); SWAP_FLOATS( x, 3, w, 0 ); SWAP_FLOATS( y, 2, z, 1 ); SWAP_FLOATS( y, 3, w, 1 ); SWAP_FLOATS( z, 3, w, 2 ); } // find the lowest component of a.x, a.y, a.z, // and replicate it to the whole return value. FORCEINLINE fltx4 FindLowestSIMD3( const fltx4 & a ) { float lowest = min( min( SubFloat(a, 0), SubFloat(a, 1) ), SubFloat(a, 2)); return ReplicateX4(lowest); } // find the highest component of a.x, a.y, a.z, // and replicate it to the whole return value. FORCEINLINE fltx4 FindHighestSIMD3( const fltx4 & a ) { float highest = max( max( SubFloat(a, 0), SubFloat(a, 1) ), SubFloat(a, 2)); return ReplicateX4(highest); } // Fixed-point conversion and save as SIGNED INTS. // pDest->x = Int (vSrc.x) // note: some architectures have means of doing // fixed point conversion when the fix depth is // specified as an immediate.. but there is no way // to guarantee an immediate as a parameter to function // like this. FORCEINLINE void ConvertStoreAsIntsSIMD(intx4 * RESTRICT pDest, const fltx4 &vSrc) { (*pDest)[0] = SubFloat(vSrc, 0); (*pDest)[1] = SubFloat(vSrc, 1); (*pDest)[2] = SubFloat(vSrc, 2); (*pDest)[3] = SubFloat(vSrc, 3); } // ------------------------------------ // INTEGER SIMD OPERATIONS. // ------------------------------------ // splat all components of a vector to a signed immediate int number. FORCEINLINE fltx4 IntSetImmediateSIMD( int nValue ) { fltx4 retval; SubInt( retval, 0 ) = SubInt( retval, 1 ) = SubInt( retval, 2 ) = SubInt( retval, 3) = nValue; return retval; } // Load 4 aligned words into a SIMD register FORCEINLINE i32x4 LoadAlignedIntSIMD(const void * RESTRICT pSIMD) { return *( reinterpret_cast< const i32x4 *> ( pSIMD ) ); } // Load 4 unaligned words into a SIMD register FORCEINLINE i32x4 LoadUnalignedIntSIMD( const void * RESTRICT pSIMD) { return *( reinterpret_cast< const i32x4 *> ( pSIMD ) ); } // save into four words, 16-byte aligned FORCEINLINE void StoreAlignedIntSIMD( int32 *pSIMD, const fltx4 & a ) { *( reinterpret_cast< i32x4 *> ( pSIMD ) ) = a; } FORCEINLINE void StoreAlignedIntSIMD( intx4 &pSIMD, const fltx4 & a ) { *( reinterpret_cast< i32x4 *> ( pSIMD.Base() ) ) = a; } FORCEINLINE void StoreUnalignedIntSIMD( int32 *pSIMD, const fltx4 & a ) { *( reinterpret_cast< i32x4 *> ( pSIMD ) ) = a; } // Take a fltx4 containing fixed-point uints and // return them as single precision floats. No // fixed point conversion is done. FORCEINLINE fltx4 UnsignedIntConvertToFltSIMD( const u32x4 &vSrcA ) { Assert(0); /* pc has no such operation */ fltx4 retval; SubFloat( retval, 0 ) = ( (float) SubInt( retval, 0 ) ); SubFloat( retval, 1 ) = ( (float) SubInt( retval, 1 ) ); SubFloat( retval, 2 ) = ( (float) SubInt( retval, 2 ) ); SubFloat( retval, 3 ) = ( (float) SubInt( retval, 3 ) ); return retval; } #if 0 /* pc has no such op */ // Take a fltx4 containing fixed-point sints and // return them as single precision floats. No // fixed point conversion is done. FORCEINLINE fltx4 SignedIntConvertToFltSIMD( const i32x4 &vSrcA ) { fltx4 retval; SubFloat( retval, 0 ) = ( (float) (reinterpret_cast(&vSrcA.m128_s32[0])) ); SubFloat( retval, 1 ) = ( (float) (reinterpret_cast(&vSrcA.m128_s32[1])) ); SubFloat( retval, 2 ) = ( (float) (reinterpret_cast(&vSrcA.m128_s32[2])) ); SubFloat( retval, 3 ) = ( (float) (reinterpret_cast(&vSrcA.m128_s32[3])) ); return retval; } /* works on fltx4's as if they are four uints. the first parameter contains the words to be shifted, the second contains the amount to shift by AS INTS for i = 0 to 3 shift = vSrcB_i*32:(i*32)+4 vReturned_i*32:(i*32)+31 = vSrcA_i*32:(i*32)+31 << shift */ FORCEINLINE i32x4 IntShiftLeftWordSIMD(const i32x4 &vSrcA, const i32x4 &vSrcB) { i32x4 retval; SubInt(retval, 0) = SubInt(vSrcA, 0) << SubInt(vSrcB, 0); SubInt(retval, 1) = SubInt(vSrcA, 1) << SubInt(vSrcB, 1); SubInt(retval, 2) = SubInt(vSrcA, 2) << SubInt(vSrcB, 2); SubInt(retval, 3) = SubInt(vSrcA, 3) << SubInt(vSrcB, 3); return retval; } #endif #elif ( defined( _X360 ) ) //--------------------------------------------------------------------- // X360 implementation //--------------------------------------------------------------------- FORCEINLINE float & FloatSIMD( fltx4 & a, int idx ) { fltx4_union & a_union = (fltx4_union &)a; return a_union.m128_f32[idx]; } FORCEINLINE unsigned int & UIntSIMD( fltx4 & a, int idx ) { fltx4_union & a_union = (fltx4_union &)a; return a_union.m128_u32[idx]; } FORCEINLINE fltx4 AddSIMD( const fltx4 & a, const fltx4 & b ) { return __vaddfp( a, b ); } FORCEINLINE fltx4 SubSIMD( const fltx4 & a, const fltx4 & b ) // a-b { return __vsubfp( a, b ); } FORCEINLINE fltx4 MulSIMD( const fltx4 & a, const fltx4 & b ) // a*b { return __vmulfp( a, b ); } FORCEINLINE fltx4 MaddSIMD( const fltx4 & a, const fltx4 & b, const fltx4 & c ) // a*b + c { return __vmaddfp( a, b, c ); } FORCEINLINE fltx4 MsubSIMD( const fltx4 & a, const fltx4 & b, const fltx4 & c ) // c - a*b { return __vnmsubfp( a, b, c ); }; FORCEINLINE fltx4 Dot3SIMD( const fltx4 &a, const fltx4 &b ) { return __vmsum3fp( a, b ); } FORCEINLINE fltx4 Dot4SIMD( const fltx4 &a, const fltx4 &b ) { return __vmsum4fp( a, b ); } FORCEINLINE fltx4 SinSIMD( const fltx4 &radians ) { return XMVectorSin( radians ); } FORCEINLINE void SinCos3SIMD( fltx4 &sine, fltx4 &cosine, const fltx4 &radians ) { XMVectorSinCos( &sine, &cosine, radians ); } FORCEINLINE void SinCosSIMD( fltx4 &sine, fltx4 &cosine, const fltx4 &radians ) { XMVectorSinCos( &sine, &cosine, radians ); } FORCEINLINE void CosSIMD( fltx4 &cosine, const fltx4 &radians ) { cosine = XMVectorCos( radians ); } FORCEINLINE fltx4 ArcSinSIMD( const fltx4 &sine ) { return XMVectorASin( sine ); } FORCEINLINE fltx4 ArcCosSIMD( const fltx4 &cs ) { return XMVectorACos( cs ); } // tan^1(a/b) .. ie, pass sin in as a and cos in as b FORCEINLINE fltx4 ArcTan2SIMD( const fltx4 &a, const fltx4 &b ) { return XMVectorATan2( a, b ); } // DivSIMD defined further down, since it uses ReciprocalSIMD FORCEINLINE fltx4 MaxSIMD( const fltx4 & a, const fltx4 & b ) // max(a,b) { return __vmaxfp( a, b ); } FORCEINLINE fltx4 MinSIMD( const fltx4 & a, const fltx4 & b ) // min(a,b) { return __vminfp( a, b ); } FORCEINLINE fltx4 AndSIMD( const fltx4 & a, const fltx4 & b ) // a & b { return __vand( a, b ); } FORCEINLINE fltx4 AndNotSIMD( const fltx4 & a, const fltx4 & b ) // ~a & b { // NOTE: a and b are swapped in the call: SSE complements the first argument, VMX the second return __vandc( b, a ); } FORCEINLINE fltx4 XorSIMD( const fltx4 & a, const fltx4 & b ) // a ^ b { return __vxor( a, b ); } FORCEINLINE fltx4 OrSIMD( const fltx4 & a, const fltx4 & b ) // a | b { return __vor( a, b ); } FORCEINLINE fltx4 NegSIMD(const fltx4 &a) // negate: -a { return XMVectorNegate(a); } FORCEINLINE bool IsAllZeros( const fltx4 & a ) // all floats of a zero? { unsigned int equalFlags = 0; __vcmpeqfpR( a, Four_Zeros, &equalFlags ); return XMComparisonAllTrue( equalFlags ); } FORCEINLINE bool IsAnyZeros( const fltx4 & a ) // any floats are zero? { unsigned int conditionregister; XMVectorEqualR(&conditionregister, a, XMVectorZero()); return XMComparisonAnyTrue(conditionregister); } FORCEINLINE bool IsAnyXYZZero( const fltx4 &a ) // are any of x,y,z zero? { // copy a's x component into w, in case w was zero. fltx4 temp = __vrlimi(a, a, 1, 1); unsigned int conditionregister; XMVectorEqualR(&conditionregister, temp, XMVectorZero()); return XMComparisonAnyTrue(conditionregister); } // for branching when a.xyzw > b.xyzw FORCEINLINE bool IsAllGreaterThan( const fltx4 &a, const fltx4 &b ) { unsigned int cr; XMVectorGreaterR(&cr,a,b); return XMComparisonAllTrue(cr); } // for branching when a.xyzw >= b.xyzw FORCEINLINE bool IsAllGreaterThanOrEq( const fltx4 &a, const fltx4 &b ) { unsigned int cr; XMVectorGreaterOrEqualR(&cr,a,b); return XMComparisonAllTrue(cr); } // For branching if all a.xyzw == b.xyzw FORCEINLINE bool IsAllEqual( const fltx4 & a, const fltx4 & b ) { unsigned int cr; XMVectorEqualR(&cr,a,b); return XMComparisonAllTrue(cr); } FORCEINLINE int TestSignSIMD( const fltx4 & a ) // mask of which floats have the high bit set { // NOTE: this maps to SSE way better than it does to VMX (most code uses IsAnyNegative(), though) int nRet = 0; const fltx4_union & a_union = (const fltx4_union &)a; nRet |= ( a_union.m128_u32[0] & 0x80000000 ) >> 31; // sign(x) -> bit 0 nRet |= ( a_union.m128_u32[1] & 0x80000000 ) >> 30; // sign(y) -> bit 1 nRet |= ( a_union.m128_u32[2] & 0x80000000 ) >> 29; // sign(z) -> bit 2 nRet |= ( a_union.m128_u32[3] & 0x80000000 ) >> 28; // sign(w) -> bit 3 return nRet; } // Squelch the w component of a vector to +0.0. // Most efficient when you say a = SetWToZeroSIMD(a) (avoids a copy) FORCEINLINE fltx4 SetWToZeroSIMD( const fltx4 & a ) { return __vrlimi( a, __vzero(), 1, 0 ); } FORCEINLINE bool IsAnyNegative( const fltx4 & a ) // (a.x < 0) || (a.y < 0) || (a.z < 0) || (a.w < 0) { // NOTE: this tests the top bits of each vector element using integer math // (so it ignores NaNs - it will return true for "-NaN") unsigned int equalFlags = 0; fltx4 signMask = __vspltisw( -1 ); // 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF (low order 5 bits of each element = 31) signMask = __vslw( signMask, signMask ); // 0x80000000 0x80000000 0x80000000 0x80000000 __vcmpequwR( Four_Zeros, __vand( signMask, a ), &equalFlags ); return !XMComparisonAllTrue( equalFlags ); } FORCEINLINE fltx4 CmpEqSIMD( const fltx4 & a, const fltx4 & b ) // (a==b) ? ~0:0 { return __vcmpeqfp( a, b ); } FORCEINLINE fltx4 CmpGtSIMD( const fltx4 & a, const fltx4 & b ) // (a>b) ? ~0:0 { return __vcmpgtfp( a, b ); } FORCEINLINE fltx4 CmpGeSIMD( const fltx4 & a, const fltx4 & b ) // (a>=b) ? ~0:0 { return __vcmpgefp( a, b ); } FORCEINLINE fltx4 CmpLtSIMD( const fltx4 & a, const fltx4 & b ) // (a= -b) ? ~0 : 0 { return XMVectorInBounds( a, b ); } // returned[i] = ReplacementMask[i] == 0 ? OldValue : NewValue FORCEINLINE fltx4 MaskedAssign( const fltx4 & ReplacementMask, const fltx4 & NewValue, const fltx4 & OldValue ) { return __vsel( OldValue, NewValue, ReplacementMask ); } // AKA "Broadcast", "Splat" FORCEINLINE fltx4 ReplicateX4( float flValue ) // a,a,a,a { // NOTE: if flValue comes from a register, this causes a Load-Hit-Store stall (don't mix fpu/vpu math!) float * pValue = &flValue; Assert( pValue ); Assert( ((unsigned int)pValue & 3) == 0); return __vspltw( __lvlx( pValue, 0 ), 0 ); } FORCEINLINE fltx4 ReplicateX4( const float *pValue ) // a,a,a,a { Assert( pValue ); return __vspltw( __lvlx( pValue, 0 ), 0 ); } /// replicate a single 32 bit integer value to all 4 components of an m128 FORCEINLINE fltx4 ReplicateIX4( int nValue ) { // NOTE: if nValue comes from a register, this causes a Load-Hit-Store stall (should not mix ints with fltx4s!) int * pValue = &nValue; Assert( pValue ); Assert( ((unsigned int)pValue & 3) == 0); return __vspltw( __lvlx( pValue, 0 ), 0 ); } // Round towards positive infinity FORCEINLINE fltx4 CeilSIMD( const fltx4 &a ) { return __vrfip(a); } // Round towards nearest integer FORCEINLINE fltx4 RoundSIMD( const fltx4 &a ) { return __vrfin(a); } // Round towards negative infinity FORCEINLINE fltx4 FloorSIMD( const fltx4 &a ) { return __vrfim(a); } FORCEINLINE fltx4 SqrtEstSIMD( const fltx4 & a ) // sqrt(a), more or less { // This is emulated from rsqrt return XMVectorSqrtEst( a ); } FORCEINLINE fltx4 SqrtSIMD( const fltx4 & a ) // sqrt(a) { // This is emulated from rsqrt return XMVectorSqrt( a ); } FORCEINLINE fltx4 ReciprocalSqrtEstSIMD( const fltx4 & a ) // 1/sqrt(a), more or less { return __vrsqrtefp( a ); } FORCEINLINE fltx4 ReciprocalSqrtEstSaturateSIMD( const fltx4 & a ) { // Convert zeros to epsilons fltx4 zero_mask = CmpEqSIMD( a, Four_Zeros ); fltx4 a_safe = OrSIMD( a, AndSIMD( Four_Epsilons, zero_mask ) ); return ReciprocalSqrtEstSIMD( a_safe ); } FORCEINLINE fltx4 ReciprocalSqrtSIMD( const fltx4 & a ) // 1/sqrt(a) { // This uses Newton-Raphson to improve the HW result return XMVectorReciprocalSqrt( a ); } FORCEINLINE fltx4 ReciprocalEstSIMD( const fltx4 & a ) // 1/a, more or less { return __vrefp( a ); } /// 1/x for all 4 values. uses reciprocal approximation instruction plus newton iteration. /// No error checking! FORCEINLINE fltx4 ReciprocalSIMD( const fltx4 & a ) // 1/a { // This uses Newton-Raphson to improve the HW result return XMVectorReciprocal( a ); } // FIXME: on 360, this is very slow, since it uses ReciprocalSIMD (do we need DivEstSIMD?) FORCEINLINE fltx4 DivSIMD( const fltx4 & a, const fltx4 & b ) // a/b { return MulSIMD( ReciprocalSIMD( b ), a ); } /// 1/x for all 4 values. /// 1/0 will result in a big but NOT infinite result FORCEINLINE fltx4 ReciprocalEstSaturateSIMD( const fltx4 & a ) { // Convert zeros to epsilons fltx4 zero_mask = CmpEqSIMD( a, Four_Zeros ); fltx4 a_safe = OrSIMD( a, AndSIMD( Four_Epsilons, zero_mask ) ); return ReciprocalEstSIMD( a_safe ); } FORCEINLINE fltx4 ReciprocalSaturateSIMD( const fltx4 & a ) { // Convert zeros to epsilons fltx4 zero_mask = CmpEqSIMD( a, Four_Zeros ); fltx4 a_safe = OrSIMD( a, AndSIMD( Four_Epsilons, zero_mask ) ); return ReciprocalSIMD( a_safe ); // FIXME: This could be faster (BUT: it doesn't preserve the sign of -0.0, whereas the above does) // fltx4 zeroMask = CmpEqSIMD( Four_Zeros, a ); // fltx4 a_safe = XMVectorSelect( a, Four_Epsilons, zeroMask ); // return ReciprocalSIMD( a_safe ); } // CHRISG: is it worth doing integer bitfiddling for this? // 2^x for all values (the antilog) FORCEINLINE fltx4 ExpSIMD( const fltx4 &toPower ) { return XMVectorExp(toPower); } // Clamps the components of a vector to a specified minimum and maximum range. FORCEINLINE fltx4 ClampVectorSIMD( FLTX4 in, FLTX4 min, FLTX4 max) { return XMVectorClamp(in, min, max); } FORCEINLINE fltx4 LoadUnalignedSIMD( const void *pSIMD ) { return XMLoadVector4( pSIMD ); } // load a 3-vector (as opposed to LoadUnalignedSIMD, which loads a 4-vec). FORCEINLINE fltx4 LoadUnaligned3SIMD( const void *pSIMD ) { return XMLoadVector3( pSIMD ); } FORCEINLINE fltx4 LoadAlignedSIMD( const void *pSIMD ) { return *( reinterpret_cast< const fltx4 *> ( pSIMD ) ); } // for the transitional class -- load a 3-by VectorAligned and squash its w component FORCEINLINE fltx4 LoadAlignedSIMD( const VectorAligned & pSIMD ) { fltx4 out = XMLoadVector3A(pSIMD.Base()); // squelch w return __vrlimi( out, __vzero(), 1, 0 ); } // for the transitional class -- load a 3-by VectorAligned and squash its w component FORCEINLINE fltx4 LoadAlignedSIMD( const VectorAligned * RESTRICT pSIMD ) { fltx4 out = XMLoadVector3A(pSIMD); // squelch w return __vrlimi( out, __vzero(), 1, 0 ); } FORCEINLINE void StoreAlignedSIMD( float *pSIMD, const fltx4 & a ) { *( reinterpret_cast< fltx4 *> ( pSIMD ) ) = a; } FORCEINLINE void StoreUnalignedSIMD( float *pSIMD, const fltx4 & a ) { XMStoreVector4( pSIMD, a ); } FORCEINLINE void StoreUnaligned3SIMD( float *pSIMD, const fltx4 & a ) { XMStoreVector3( pSIMD, a ); } // strongly typed -- for typechecking as we transition to SIMD FORCEINLINE void StoreAligned3SIMD( VectorAligned * RESTRICT pSIMD, const fltx4 & a ) { XMStoreVector3A(pSIMD->Base(),a); } // Fixed-point conversion and save as SIGNED INTS. // pDest->x = Int (vSrc.x) // note: some architectures have means of doing // fixed point conversion when the fix depth is // specified as an immediate.. but there is no way // to guarantee an immediate as a parameter to function // like this. FORCEINLINE void ConvertStoreAsIntsSIMD(intx4 * RESTRICT pDest, const fltx4 &vSrc) { fltx4 asInt = __vctsxs( vSrc, 0 ); XMStoreVector4A(pDest->Base(), asInt); } FORCEINLINE void TransposeSIMD( fltx4 & x, fltx4 & y, fltx4 & z, fltx4 & w ) { XMMATRIX xyzwMatrix = _XMMATRIX( x, y, z, w ); xyzwMatrix = XMMatrixTranspose( xyzwMatrix ); x = xyzwMatrix.r[0]; y = xyzwMatrix.r[1]; z = xyzwMatrix.r[2]; w = xyzwMatrix.r[3]; } // Return one in the fastest way -- faster even than loading. FORCEINLINE fltx4 LoadZeroSIMD( void ) { return XMVectorZero(); } // Return one in the fastest way -- faster even than loading. FORCEINLINE fltx4 LoadOneSIMD( void ) { return XMVectorSplatOne(); } FORCEINLINE fltx4 SplatXSIMD( fltx4 a ) { return XMVectorSplatX( a ); } FORCEINLINE fltx4 SplatYSIMD( fltx4 a ) { return XMVectorSplatY( a ); } FORCEINLINE fltx4 SplatZSIMD( fltx4 a ) { return XMVectorSplatZ( a ); } FORCEINLINE fltx4 SplatWSIMD( fltx4 a ) { return XMVectorSplatW( a ); } FORCEINLINE fltx4 SetXSIMD( const fltx4& a, const fltx4& x ) { fltx4 result = __vrlimi(a, x, 8, 0); return result; } FORCEINLINE fltx4 SetYSIMD( const fltx4& a, const fltx4& y ) { fltx4 result = __vrlimi(a, y, 4, 0); return result; } FORCEINLINE fltx4 SetZSIMD( const fltx4& a, const fltx4& z ) { fltx4 result = __vrlimi(a, z, 2, 0); return result; } FORCEINLINE fltx4 SetWSIMD( const fltx4& a, const fltx4& w ) { fltx4 result = __vrlimi(a, w, 1, 0); return result; } FORCEINLINE fltx4 SetComponentSIMD( const fltx4& a, int nComponent, float flValue ) { static int s_nVrlimiMask[4] = { 8, 4, 2, 1 }; fltx4 val = ReplicateX4( flValue ); fltx4 result = __vrlimi(a, val, s_nVrlimiMask[nComponent], 0); return result; } FORCEINLINE fltx4 RotateLeft( const fltx4 & a ) { fltx4 compareOne = a; return __vrlimi( compareOne, a, 8 | 4 | 2 | 1, 1 ); } FORCEINLINE fltx4 RotateLeft2( const fltx4 & a ) { fltx4 compareOne = a; return __vrlimi( compareOne, a, 8 | 4 | 2 | 1, 2 ); } // find the lowest component of a.x, a.y, a.z, // and replicate it to the whole return value. // ignores a.w. // Though this is only five instructions long, // they are all dependent, making this stall city. // Forcing this inline should hopefully help with scheduling. FORCEINLINE fltx4 FindLowestSIMD3( const fltx4 & a ) { // a is [x,y,z,G] (where G is garbage) // rotate left by one fltx4 compareOne = a ; compareOne = __vrlimi( compareOne, a, 8 | 4 , 1 ); // compareOne is [y,z,G,G] fltx4 retval = MinSIMD( a, compareOne ); // retVal is [min(x,y), min(y,z), G, G] compareOne = __vrlimi( compareOne, a, 8 , 2); // compareOne is [z, G, G, G] retval = MinSIMD( retval, compareOne ); // retVal = [ min(min(x,y),z), G, G, G ] // splat the x component out to the whole vector and return return SplatXSIMD( retval ); } // find the highest component of a.x, a.y, a.z, // and replicate it to the whole return value. // ignores a.w. // Though this is only five instructions long, // they are all dependent, making this stall city. // Forcing this inline should hopefully help with scheduling. FORCEINLINE fltx4 FindHighestSIMD3( const fltx4 & a ) { // a is [x,y,z,G] (where G is garbage) // rotate left by one fltx4 compareOne = a ; compareOne = __vrlimi( compareOne, a, 8 | 4 , 1 ); // compareOne is [y,z,G,G] fltx4 retval = MaxSIMD( a, compareOne ); // retVal is [max(x,y), max(y,z), G, G] compareOne = __vrlimi( compareOne, a, 8 , 2); // compareOne is [z, G, G, G] retval = MaxSIMD( retval, compareOne ); // retVal = [ max(max(x,y),z), G, G, G ] // splat the x component out to the whole vector and return return SplatXSIMD( retval ); } // Transform many (horizontal) points in-place by a 3x4 matrix, // here already loaded onto three fltx4 registers. // The points must be stored as 16-byte aligned. They are points // and not vectors because we assume the w-component to be 1. // To spare yourself the annoyance of loading the matrix yourself, // use one of the overloads below. void TransformManyPointsBy(VectorAligned * RESTRICT pVectors, unsigned int numVectors, FLTX4 mRow1, FLTX4 mRow2, FLTX4 mRow3); // Transform many (horizontal) points in-place by a 3x4 matrix. // The points must be stored as 16-byte aligned. They are points // and not vectors because we assume the w-component to be 1. // In this function, the matrix need not be aligned. FORCEINLINE void TransformManyPointsBy(VectorAligned * RESTRICT pVectors, unsigned int numVectors, const matrix3x4_t &pMatrix) { return TransformManyPointsBy(pVectors, numVectors, LoadUnalignedSIMD( pMatrix[0] ), LoadUnalignedSIMD( pMatrix[1] ), LoadUnalignedSIMD( pMatrix[2] ) ); } // Transform many (horizontal) points in-place by a 3x4 matrix. // The points must be stored as 16-byte aligned. They are points // and not vectors because we assume the w-component to be 1. // In this function, the matrix must itself be aligned on a 16-byte // boundary. FORCEINLINE void TransformManyPointsByA(VectorAligned * RESTRICT pVectors, unsigned int numVectors, const matrix3x4_t &pMatrix) { return TransformManyPointsBy(pVectors, numVectors, LoadAlignedSIMD( pMatrix[0] ), LoadAlignedSIMD( pMatrix[1] ), LoadAlignedSIMD( pMatrix[2] ) ); } // ------------------------------------ // INTEGER SIMD OPERATIONS. // ------------------------------------ // Load 4 aligned words into a SIMD register FORCEINLINE i32x4 LoadAlignedIntSIMD( const void * RESTRICT pSIMD) { return XMLoadVector4A(pSIMD); } // Load 4 unaligned words into a SIMD register FORCEINLINE i32x4 LoadUnalignedIntSIMD(const void * RESTRICT pSIMD) { return XMLoadVector4( pSIMD ); } // save into four words, 16-byte aligned FORCEINLINE void StoreAlignedIntSIMD( int32 *pSIMD, const fltx4 & a ) { *( reinterpret_cast< i32x4 *> ( pSIMD ) ) = a; } FORCEINLINE void StoreAlignedIntSIMD( intx4 &pSIMD, const fltx4 & a ) { *( reinterpret_cast< i32x4 *> ( pSIMD.Base() ) ) = a; } FORCEINLINE void StoreUnalignedIntSIMD( int32 *pSIMD, const fltx4 & a ) { XMStoreVector4(pSIMD, a); } // Take a fltx4 containing fixed-point uints and // return them as single precision floats. No // fixed point conversion is done. FORCEINLINE fltx4 UnsignedIntConvertToFltSIMD( const i32x4 &vSrcA ) { return __vcfux( vSrcA, 0 ); } // Take a fltx4 containing fixed-point sints and // return them as single precision floats. No // fixed point conversion is done. FORCEINLINE fltx4 SignedIntConvertToFltSIMD( const i32x4 &vSrcA ) { return __vcfsx( vSrcA, 0 ); } // Take a fltx4 containing fixed-point uints and // return them as single precision floats. Each uint // will be divided by 2^immed after conversion // (eg, this is fixed point math). /* as if: FORCEINLINE fltx4 UnsignedIntConvertToFltSIMD( const i32x4 &vSrcA, unsigned int uImmed ) { return __vcfux( vSrcA, uImmed ); } */ #define UnsignedFixedIntConvertToFltSIMD(vSrcA, uImmed) (__vcfux( (vSrcA), (uImmed) )) // Take a fltx4 containing fixed-point sints and // return them as single precision floats. Each int // will be divided by 2^immed (eg, this is fixed point // math). /* as if: FORCEINLINE fltx4 SignedIntConvertToFltSIMD( const i32x4 &vSrcA, unsigned int uImmed ) { return __vcfsx( vSrcA, uImmed ); } */ #define SignedFixedIntConvertToFltSIMD(vSrcA, uImmed) (__vcfsx( (vSrcA), (uImmed) )) // set all components of a vector to a signed immediate int number. /* as if: FORCEINLINE fltx4 IntSetImmediateSIMD(int toImmediate) { return __vspltisw( toImmediate ); } */ #define IntSetImmediateSIMD(x) (__vspltisw(x)) /* works on fltx4's as if they are four uints. the first parameter contains the words to be shifted, the second contains the amount to shift by AS INTS for i = 0 to 3 shift = vSrcB_i*32:(i*32)+4 vReturned_i*32:(i*32)+31 = vSrcA_i*32:(i*32)+31 << shift */ FORCEINLINE fltx4 IntShiftLeftWordSIMD(fltx4 vSrcA, fltx4 vSrcB) { return __vslw(vSrcA, vSrcB); } FORCEINLINE float SubFloat( const fltx4 & a, int idx ) { // NOTE: if the output goes into a register, this causes a Load-Hit-Store stall (don't mix fpu/vpu math!) const fltx4_union & a_union = (const fltx4_union &)a; return a_union.m128_f32[ idx ]; } FORCEINLINE float & SubFloat( fltx4 & a, int idx ) { fltx4_union & a_union = (fltx4_union &)a; return a_union.m128_f32[idx]; } FORCEINLINE uint32 SubFloatConvertToInt( const fltx4 & a, int idx ) { fltx4 t = __vctuxs( a, 0 ); const fltx4_union & a_union = (const fltx4_union &)t; return a_union.m128_u32[idx]; } FORCEINLINE uint32 SubInt( const fltx4 & a, int idx ) { const fltx4_union & a_union = (const fltx4_union &)a; return a_union.m128_u32[idx]; } FORCEINLINE uint32 & SubInt( fltx4 & a, int idx ) { fltx4_union & a_union = (fltx4_union &)a; return a_union.m128_u32[idx]; } #else //--------------------------------------------------------------------- // Intel/SSE implementation //--------------------------------------------------------------------- FORCEINLINE void StoreAlignedSIMD( float * RESTRICT pSIMD, const fltx4 & a ) { _mm_store_ps( pSIMD, a ); } FORCEINLINE void StoreUnalignedSIMD( float * RESTRICT pSIMD, const fltx4 & a ) { _mm_storeu_ps( pSIMD, a ); } FORCEINLINE fltx4 RotateLeft( const fltx4 & a ); FORCEINLINE fltx4 RotateLeft2( const fltx4 & a ); FORCEINLINE void StoreUnaligned3SIMD( float *pSIMD, const fltx4 & a ) { _mm_store_ss(pSIMD, a); _mm_store_ss(pSIMD+1, RotateLeft(a)); _mm_store_ss(pSIMD+2, RotateLeft2(a)); } // strongly typed -- syntactic castor oil used for typechecking as we transition to SIMD FORCEINLINE void StoreAligned3SIMD( VectorAligned * RESTRICT pSIMD, const fltx4 & a ) { StoreAlignedSIMD( pSIMD->Base(),a ); } FORCEINLINE fltx4 LoadAlignedSIMD( const void *pSIMD ) { return _mm_load_ps( reinterpret_cast< const float *> ( pSIMD ) ); } FORCEINLINE fltx4 AndSIMD( const fltx4 & a, const fltx4 & b ) // a & b { return _mm_and_ps( a, b ); } FORCEINLINE fltx4 AndNotSIMD( const fltx4 & a, const fltx4 & b ) // ~a & b { return _mm_andnot_ps( a, b ); } FORCEINLINE fltx4 XorSIMD( const fltx4 & a, const fltx4 & b ) // a ^ b { return _mm_xor_ps( a, b ); } FORCEINLINE fltx4 OrSIMD( const fltx4 & a, const fltx4 & b ) // a | b { return _mm_or_ps( a, b ); } // Squelch the w component of a vector to +0.0. // Most efficient when you say a = SetWToZeroSIMD(a) (avoids a copy) FORCEINLINE fltx4 SetWToZeroSIMD( const fltx4 & a ) { return AndSIMD( a, LoadAlignedSIMD( g_SIMD_clear_wmask ) ); } // for the transitional class -- load a 3-by VectorAligned and squash its w component FORCEINLINE fltx4 LoadAlignedSIMD( const VectorAligned & pSIMD ) { return SetWToZeroSIMD( LoadAlignedSIMD(pSIMD.Base()) ); } #ifdef USING_ASAN static NO_ASAN fltx4 LoadUnalignedSIMD( const void *pSIMD ) { return _mm_loadu_ps( reinterpret_cast( pSIMD ) ); } static NO_ASAN fltx4 LoadUnaligned3SIMD( const void *pSIMD ) { return _mm_loadu_ps( reinterpret_cast( pSIMD ) ); } #else FORCEINLINE fltx4 LoadUnalignedSIMD( const void *pSIMD ) { return _mm_loadu_ps( reinterpret_cast( pSIMD ) ); } FORCEINLINE fltx4 LoadUnaligned3SIMD( const void *pSIMD ) { return _mm_loadu_ps( reinterpret_cast( pSIMD ) ); } #endif /// replicate a single 32 bit integer value to all 4 components of an m128 FORCEINLINE fltx4 ReplicateIX4( int i ) { fltx4 value = _mm_set_ss( * ( ( float *) &i ) );; return _mm_shuffle_ps( value, value, 0); } FORCEINLINE fltx4 ReplicateX4( float flValue ) { __m128 value = _mm_set_ss( flValue ); return _mm_shuffle_ps( value, value, 0 ); } FORCEINLINE float SubFloat( const fltx4 & a, int idx ) { // NOTE: if the output goes into a register, this causes a Load-Hit-Store stall (don't mix fpu/vpu math!) #ifndef POSIX return a.m128_f32[ idx ]; #else return (reinterpret_cast(&a))[idx]; #endif } FORCEINLINE float & SubFloat( fltx4 & a, int idx ) { #ifndef POSIX return a.m128_f32[ idx ]; #else return (reinterpret_cast(&a))[idx]; #endif } FORCEINLINE uint32 SubFloatConvertToInt( const fltx4 & a, int idx ) { return (uint32)SubFloat(a,idx); } FORCEINLINE uint32 SubInt( const fltx4 & a, int idx ) { #ifndef POSIX return a.m128_u32[idx]; #else return (reinterpret_cast(&a))[idx]; #endif } FORCEINLINE uint32 & SubInt( fltx4 & a, int idx ) { #ifndef POSIX return a.m128_u32[idx]; #else return (reinterpret_cast(&a))[idx]; #endif } // Return one in the fastest way -- on the x360, faster even than loading. FORCEINLINE fltx4 LoadZeroSIMD( void ) { return Four_Zeros; } // Return one in the fastest way -- on the x360, faster even than loading. FORCEINLINE fltx4 LoadOneSIMD( void ) { return Four_Ones; } FORCEINLINE fltx4 MaskedAssign( const fltx4 & ReplacementMask, const fltx4 & NewValue, const fltx4 & OldValue ) { return OrSIMD( AndSIMD( ReplacementMask, NewValue ), AndNotSIMD( ReplacementMask, OldValue ) ); } // remember, the SSE numbers its words 3 2 1 0 // The way we want to specify shuffles is backwards from the default // MM_SHUFFLE_REV is in array index order (default is reversed) #define MM_SHUFFLE_REV(a,b,c,d) _MM_SHUFFLE(d,c,b,a) FORCEINLINE fltx4 SplatXSIMD( fltx4 const & a ) { return _mm_shuffle_ps( a, a, MM_SHUFFLE_REV( 0, 0, 0, 0 ) ); } FORCEINLINE fltx4 SplatYSIMD( fltx4 const &a ) { return _mm_shuffle_ps( a, a, MM_SHUFFLE_REV( 1, 1, 1, 1 ) ); } FORCEINLINE fltx4 SplatZSIMD( fltx4 const &a ) { return _mm_shuffle_ps( a, a, MM_SHUFFLE_REV( 2, 2, 2, 2 ) ); } FORCEINLINE fltx4 SplatWSIMD( fltx4 const &a ) { return _mm_shuffle_ps( a, a, _MM_SHUFFLE( 3, 3, 3, 3 ) ); } FORCEINLINE fltx4 SetXSIMD( const fltx4& a, const fltx4& x ) { fltx4 result = MaskedAssign( LoadAlignedSIMD( g_SIMD_ComponentMask[0] ), x, a ); return result; } FORCEINLINE fltx4 SetYSIMD( const fltx4& a, const fltx4& y ) { fltx4 result = MaskedAssign( LoadAlignedSIMD( g_SIMD_ComponentMask[1] ), y, a ); return result; } FORCEINLINE fltx4 SetZSIMD( const fltx4& a, const fltx4& z ) { fltx4 result = MaskedAssign( LoadAlignedSIMD( g_SIMD_ComponentMask[2] ), z, a ); return result; } FORCEINLINE fltx4 SetWSIMD( const fltx4& a, const fltx4& w ) { fltx4 result = MaskedAssign( LoadAlignedSIMD( g_SIMD_ComponentMask[3] ), w, a ); return result; } FORCEINLINE fltx4 SetComponentSIMD( const fltx4& a, int nComponent, float flValue ) { fltx4 val = ReplicateX4( flValue ); fltx4 result = MaskedAssign( LoadAlignedSIMD( g_SIMD_ComponentMask[nComponent] ), val, a ); return result; } // a b c d -> b c d a FORCEINLINE fltx4 RotateLeft( const fltx4 & a ) { return _mm_shuffle_ps( a, a, MM_SHUFFLE_REV( 1, 2, 3, 0 ) ); } // a b c d -> c d a b FORCEINLINE fltx4 RotateLeft2( const fltx4 & a ) { return _mm_shuffle_ps( a, a, MM_SHUFFLE_REV( 2, 3, 0, 1 ) ); } // a b c d -> d a b c FORCEINLINE fltx4 RotateRight( const fltx4 & a ) { return _mm_shuffle_ps( a, a, _MM_SHUFFLE( 0, 3, 2, 1) ); } // a b c d -> c d a b FORCEINLINE fltx4 RotateRight2( const fltx4 & a ) { return _mm_shuffle_ps( a, a, _MM_SHUFFLE( 1, 0, 3, 2 ) ); } FORCEINLINE fltx4 AddSIMD( const fltx4 & a, const fltx4 & b ) // a+b { return _mm_add_ps( a, b ); }; FORCEINLINE fltx4 SubSIMD( const fltx4 & a, const fltx4 & b ) // a-b { return _mm_sub_ps( a, b ); }; FORCEINLINE fltx4 MulSIMD( const fltx4 & a, const fltx4 & b ) // a*b { return _mm_mul_ps( a, b ); }; FORCEINLINE fltx4 DivSIMD( const fltx4 & a, const fltx4 & b ) // a/b { return _mm_div_ps( a, b ); }; FORCEINLINE fltx4 MaddSIMD( const fltx4 & a, const fltx4 & b, const fltx4 & c ) // a*b + c { return AddSIMD( MulSIMD(a,b), c ); } FORCEINLINE fltx4 MsubSIMD( const fltx4 & a, const fltx4 & b, const fltx4 & c ) // c - a*b { return SubSIMD( c, MulSIMD(a,b) ); }; FORCEINLINE fltx4 Dot3SIMD( const fltx4 &a, const fltx4 &b ) { fltx4 m = MulSIMD( a, b ); float flDot = SubFloat( m, 0 ) + SubFloat( m, 1 ) + SubFloat( m, 2 ); return ReplicateX4( flDot ); } FORCEINLINE fltx4 Dot4SIMD( const fltx4 &a, const fltx4 &b ) { fltx4 m = MulSIMD( a, b ); float flDot = SubFloat( m, 0 ) + SubFloat( m, 1 ) + SubFloat( m, 2 ) + SubFloat( m, 3 ); return ReplicateX4( flDot ); } //TODO: implement as four-way Taylor series (see xbox implementation) FORCEINLINE fltx4 SinSIMD( const fltx4 &radians ) { fltx4 result; SubFloat( result, 0 ) = sin( SubFloat( radians, 0 ) ); SubFloat( result, 1 ) = sin( SubFloat( radians, 1 ) ); SubFloat( result, 2 ) = sin( SubFloat( radians, 2 ) ); SubFloat( result, 3 ) = sin( SubFloat( radians, 3 ) ); return result; } FORCEINLINE void SinCos3SIMD( fltx4 &sine, fltx4 &cosine, const fltx4 &radians ) { // FIXME: Make a fast SSE version SinCos( SubFloat( radians, 0 ), &SubFloat( sine, 0 ), &SubFloat( cosine, 0 ) ); SinCos( SubFloat( radians, 1 ), &SubFloat( sine, 1 ), &SubFloat( cosine, 1 ) ); SinCos( SubFloat( radians, 2 ), &SubFloat( sine, 2 ), &SubFloat( cosine, 2 ) ); } FORCEINLINE void SinCosSIMD( fltx4 &sine, fltx4 &cosine, const fltx4 &radians ) // a*b + c { // FIXME: Make a fast SSE version SinCos( SubFloat( radians, 0 ), &SubFloat( sine, 0 ), &SubFloat( cosine, 0 ) ); SinCos( SubFloat( radians, 1 ), &SubFloat( sine, 1 ), &SubFloat( cosine, 1 ) ); SinCos( SubFloat( radians, 2 ), &SubFloat( sine, 2 ), &SubFloat( cosine, 2 ) ); SinCos( SubFloat( radians, 3 ), &SubFloat( sine, 3 ), &SubFloat( cosine, 3 ) ); } //TODO: implement as four-way Taylor series (see xbox implementation) FORCEINLINE fltx4 ArcSinSIMD( const fltx4 &sine ) { // FIXME: Make a fast SSE version fltx4 result; SubFloat( result, 0 ) = asin( SubFloat( sine, 0 ) ); SubFloat( result, 1 ) = asin( SubFloat( sine, 1 ) ); SubFloat( result, 2 ) = asin( SubFloat( sine, 2 ) ); SubFloat( result, 3 ) = asin( SubFloat( sine, 3 ) ); return result; } FORCEINLINE fltx4 ArcCosSIMD( const fltx4 &cs ) { fltx4 result; SubFloat( result, 0 ) = acos( SubFloat( cs, 0 ) ); SubFloat( result, 1 ) = acos( SubFloat( cs, 1 ) ); SubFloat( result, 2 ) = acos( SubFloat( cs, 2 ) ); SubFloat( result, 3 ) = acos( SubFloat( cs, 3 ) ); return result; } // tan^1(a/b) .. ie, pass sin in as a and cos in as b FORCEINLINE fltx4 ArcTan2SIMD( const fltx4 &a, const fltx4 &b ) { fltx4 result; SubFloat( result, 0 ) = atan2( SubFloat( a, 0 ), SubFloat( b, 0 ) ); SubFloat( result, 1 ) = atan2( SubFloat( a, 1 ), SubFloat( b, 1 ) ); SubFloat( result, 2 ) = atan2( SubFloat( a, 2 ), SubFloat( b, 2 ) ); SubFloat( result, 3 ) = atan2( SubFloat( a, 3 ), SubFloat( b, 3 ) ); return result; } FORCEINLINE fltx4 NegSIMD(const fltx4 &a) // negate: -a { return SubSIMD(LoadZeroSIMD(),a); } FORCEINLINE int TestSignSIMD( const fltx4 & a ) // mask of which floats have the high bit set { return _mm_movemask_ps( a ); } FORCEINLINE bool IsAnyNegative( const fltx4 & a ) // (a.x < 0) || (a.y < 0) || (a.z < 0) || (a.w < 0) { return (0 != TestSignSIMD( a )); } FORCEINLINE fltx4 CmpEqSIMD( const fltx4 & a, const fltx4 & b ) // (a==b) ? ~0:0 { return _mm_cmpeq_ps( a, b ); } FORCEINLINE fltx4 CmpGtSIMD( const fltx4 & a, const fltx4 & b ) // (a>b) ? ~0:0 { return _mm_cmpgt_ps( a, b ); } FORCEINLINE fltx4 CmpGeSIMD( const fltx4 & a, const fltx4 & b ) // (a>=b) ? ~0:0 { return _mm_cmpge_ps( a, b ); } FORCEINLINE fltx4 CmpLtSIMD( const fltx4 & a, const fltx4 & b ) // (a b.xyzw FORCEINLINE bool IsAllGreaterThan( const fltx4 &a, const fltx4 &b ) { return TestSignSIMD( CmpLeSIMD( a, b ) ) == 0; } // for branching when a.xyzw >= b.xyzw FORCEINLINE bool IsAllGreaterThanOrEq( const fltx4 &a, const fltx4 &b ) { return TestSignSIMD( CmpLtSIMD( a, b ) ) == 0; } // For branching if all a.xyzw == b.xyzw FORCEINLINE bool IsAllEqual( const fltx4 & a, const fltx4 & b ) { return TestSignSIMD( CmpEqSIMD( a, b ) ) == 0xf; } FORCEINLINE fltx4 CmpInBoundsSIMD( const fltx4 & a, const fltx4 & b ) // (a <= b && a >= -b) ? ~0 : 0 { return AndSIMD( CmpLeSIMD(a,b), CmpGeSIMD(a, NegSIMD(b)) ); } FORCEINLINE fltx4 MinSIMD( const fltx4 & a, const fltx4 & b ) // min(a,b) { return _mm_min_ps( a, b ); } FORCEINLINE fltx4 MaxSIMD( const fltx4 & a, const fltx4 & b ) // max(a,b) { return _mm_max_ps( a, b ); } // SSE lacks rounding operations. // Really. // You can emulate them by setting the rounding mode for the // whole processor and then converting to int, and then back again. // But every time you set the rounding mode, you clear out the // entire pipeline. So, I can't do them per operation. You // have to do it once, before the loop that would call these. // Round towards positive infinity FORCEINLINE fltx4 CeilSIMD( const fltx4 &a ) { fltx4 retVal; SubFloat( retVal, 0 ) = ceil( SubFloat( a, 0 ) ); SubFloat( retVal, 1 ) = ceil( SubFloat( a, 1 ) ); SubFloat( retVal, 2 ) = ceil( SubFloat( a, 2 ) ); SubFloat( retVal, 3 ) = ceil( SubFloat( a, 3 ) ); return retVal; } fltx4 fabs( const fltx4 & x ); // Round towards negative infinity // This is the implementation that was here before; it assumes // you are in round-to-floor mode, which I guess is usually the // case for us vis-a-vis SSE. It's totally unnecessary on // VMX, which has a native floor op. FORCEINLINE fltx4 FloorSIMD( const fltx4 &val ) { fltx4 fl4Abs = fabs( val ); fltx4 ival = SubSIMD( AddSIMD( fl4Abs, Four_2ToThe23s ), Four_2ToThe23s ); ival = MaskedAssign( CmpGtSIMD( ival, fl4Abs ), SubSIMD( ival, Four_Ones ), ival ); return XorSIMD( ival, XorSIMD( val, fl4Abs ) ); // restore sign bits } inline bool IsAllZeros( const fltx4 & var ) { return TestSignSIMD( CmpEqSIMD( var, Four_Zeros ) ) == 0xF; } FORCEINLINE fltx4 SqrtEstSIMD( const fltx4 & a ) // sqrt(a), more or less { return _mm_sqrt_ps( a ); } FORCEINLINE fltx4 SqrtSIMD( const fltx4 & a ) // sqrt(a) { return _mm_sqrt_ps( a ); } FORCEINLINE fltx4 ReciprocalSqrtEstSIMD( const fltx4 & a ) // 1/sqrt(a), more or less { return _mm_rsqrt_ps( a ); } FORCEINLINE fltx4 ReciprocalSqrtEstSaturateSIMD( const fltx4 & a ) { fltx4 zero_mask = CmpEqSIMD( a, Four_Zeros ); fltx4 ret = OrSIMD( a, AndSIMD( Four_Epsilons, zero_mask ) ); ret = ReciprocalSqrtEstSIMD( ret ); return ret; } /// uses newton iteration for higher precision results than ReciprocalSqrtEstSIMD FORCEINLINE fltx4 ReciprocalSqrtSIMD( const fltx4 & a ) // 1/sqrt(a) { fltx4 guess = ReciprocalSqrtEstSIMD( a ); // newton iteration for 1/sqrt(a) : y(n+1) = 1/2 (y(n)*(3-a*y(n)^2)); guess = MulSIMD( guess, SubSIMD( Four_Threes, MulSIMD( a, MulSIMD( guess, guess )))); guess = MulSIMD( Four_PointFives, guess); return guess; } FORCEINLINE fltx4 ReciprocalEstSIMD( const fltx4 & a ) // 1/a, more or less { return _mm_rcp_ps( a ); } /// 1/x for all 4 values, more or less /// 1/0 will result in a big but NOT infinite result FORCEINLINE fltx4 ReciprocalEstSaturateSIMD( const fltx4 & a ) { fltx4 zero_mask = CmpEqSIMD( a, Four_Zeros ); fltx4 ret = OrSIMD( a, AndSIMD( Four_Epsilons, zero_mask ) ); ret = ReciprocalEstSIMD( ret ); return ret; } /// 1/x for all 4 values. uses reciprocal approximation instruction plus newton iteration. /// No error checking! FORCEINLINE fltx4 ReciprocalSIMD( const fltx4 & a ) // 1/a { fltx4 ret = ReciprocalEstSIMD( a ); // newton iteration is: Y(n+1) = 2*Y(n)-a*Y(n)^2 ret = SubSIMD( AddSIMD( ret, ret ), MulSIMD( a, MulSIMD( ret, ret ) ) ); return ret; } /// 1/x for all 4 values. /// 1/0 will result in a big but NOT infinite result FORCEINLINE fltx4 ReciprocalSaturateSIMD( const fltx4 & a ) { fltx4 zero_mask = CmpEqSIMD( a, Four_Zeros ); fltx4 ret = OrSIMD( a, AndSIMD( Four_Epsilons, zero_mask ) ); ret = ReciprocalSIMD( ret ); return ret; } // CHRISG: is it worth doing integer bitfiddling for this? // 2^x for all values (the antilog) FORCEINLINE fltx4 ExpSIMD( const fltx4 &toPower ) { fltx4 retval; SubFloat( retval, 0 ) = powf( 2, SubFloat(toPower, 0) ); SubFloat( retval, 1 ) = powf( 2, SubFloat(toPower, 1) ); SubFloat( retval, 2 ) = powf( 2, SubFloat(toPower, 2) ); SubFloat( retval, 3 ) = powf( 2, SubFloat(toPower, 3) ); return retval; } // Clamps the components of a vector to a specified minimum and maximum range. FORCEINLINE fltx4 ClampVectorSIMD( FLTX4 in, FLTX4 min, FLTX4 max) { return MaxSIMD( min, MinSIMD( max, in ) ); } FORCEINLINE void TransposeSIMD( fltx4 & x, fltx4 & y, fltx4 & z, fltx4 & w) { _MM_TRANSPOSE4_PS( x, y, z, w ); } FORCEINLINE fltx4 FindLowestSIMD3( const fltx4 &a ) { // a is [x,y,z,G] (where G is garbage) // rotate left by one fltx4 compareOne = RotateLeft( a ); // compareOne is [y,z,G,x] fltx4 retval = MinSIMD( a, compareOne ); // retVal is [min(x,y), ... ] compareOne = RotateLeft2( a ); // compareOne is [z, G, x, y] retval = MinSIMD( retval, compareOne ); // retVal = [ min(min(x,y),z)..] // splat the x component out to the whole vector and return return SplatXSIMD( retval ); } FORCEINLINE fltx4 FindHighestSIMD3( const fltx4 &a ) { // a is [x,y,z,G] (where G is garbage) // rotate left by one fltx4 compareOne = RotateLeft( a ); // compareOne is [y,z,G,x] fltx4 retval = MaxSIMD( a, compareOne ); // retVal is [max(x,y), ... ] compareOne = RotateLeft2( a ); // compareOne is [z, G, x, y] retval = MaxSIMD( retval, compareOne ); // retVal = [ max(max(x,y),z)..] // splat the x component out to the whole vector and return return SplatXSIMD( retval ); } // ------------------------------------ // INTEGER SIMD OPERATIONS. // ------------------------------------ #if 0 /* pc does not have these ops */ // splat all components of a vector to a signed immediate int number. FORCEINLINE fltx4 IntSetImmediateSIMD(int to) { //CHRISG: SSE2 has this, but not SSE1. What to do? fltx4 retval; SubInt( retval, 0 ) = to; SubInt( retval, 1 ) = to; SubInt( retval, 2 ) = to; SubInt( retval, 3 ) = to; return retval; } #endif // Load 4 aligned words into a SIMD register FORCEINLINE i32x4 LoadAlignedIntSIMD( const void * RESTRICT pSIMD) { return _mm_load_ps( reinterpret_cast(pSIMD) ); } // Load 4 unaligned words into a SIMD register FORCEINLINE i32x4 LoadUnalignedIntSIMD( const void * RESTRICT pSIMD) { return _mm_loadu_ps( reinterpret_cast(pSIMD) ); } // save into four words, 16-byte aligned FORCEINLINE void StoreAlignedIntSIMD( int32 * RESTRICT pSIMD, const fltx4 & a ) { _mm_store_ps( reinterpret_cast(pSIMD), a ); } FORCEINLINE void StoreAlignedIntSIMD( intx4 &pSIMD, const fltx4 & a ) { _mm_store_ps( reinterpret_cast(pSIMD.Base()), a ); } FORCEINLINE void StoreUnalignedIntSIMD( int32 * RESTRICT pSIMD, const fltx4 & a ) { _mm_storeu_ps( reinterpret_cast(pSIMD), a ); } // CHRISG: the conversion functions all seem to operate on m64's only... // how do we make them work here? // Take a fltx4 containing fixed-point uints and // return them as single precision floats. No // fixed point conversion is done. FORCEINLINE fltx4 UnsignedIntConvertToFltSIMD( const u32x4 &vSrcA ) { fltx4 retval; SubFloat( retval, 0 ) = ( (float) SubInt( retval, 0 ) ); SubFloat( retval, 1 ) = ( (float) SubInt( retval, 1 ) ); SubFloat( retval, 2 ) = ( (float) SubInt( retval, 2 ) ); SubFloat( retval, 3 ) = ( (float) SubInt( retval, 3 ) ); return retval; } // Take a fltx4 containing fixed-point sints and // return them as single precision floats. No // fixed point conversion is done. FORCEINLINE fltx4 SignedIntConvertToFltSIMD( const i32x4 &vSrcA ) { fltx4 retval; SubFloat( retval, 0 ) = ( (float) (reinterpret_cast(&vSrcA)[0])); SubFloat( retval, 1 ) = ( (float) (reinterpret_cast(&vSrcA)[1])); SubFloat( retval, 2 ) = ( (float) (reinterpret_cast(&vSrcA)[2])); SubFloat( retval, 3 ) = ( (float) (reinterpret_cast(&vSrcA)[3])); return retval; } /* works on fltx4's as if they are four uints. the first parameter contains the words to be shifted, the second contains the amount to shift by AS INTS for i = 0 to 3 shift = vSrcB_i*32:(i*32)+4 vReturned_i*32:(i*32)+31 = vSrcA_i*32:(i*32)+31 << shift */ FORCEINLINE i32x4 IntShiftLeftWordSIMD(const i32x4 &vSrcA, const i32x4 &vSrcB) { i32x4 retval; SubInt(retval, 0) = SubInt(vSrcA, 0) << SubInt(vSrcB, 0); SubInt(retval, 1) = SubInt(vSrcA, 1) << SubInt(vSrcB, 1); SubInt(retval, 2) = SubInt(vSrcA, 2) << SubInt(vSrcB, 2); SubInt(retval, 3) = SubInt(vSrcA, 3) << SubInt(vSrcB, 3); return retval; } // Fixed-point conversion and save as SIGNED INTS. // pDest->x = Int (vSrc.x) // note: some architectures have means of doing // fixed point conversion when the fix depth is // specified as an immediate.. but there is no way // to guarantee an immediate as a parameter to function // like this. FORCEINLINE void ConvertStoreAsIntsSIMD(intx4 * RESTRICT pDest, const fltx4 &vSrc) { #if defined( COMPILER_MSVC64 ) (*pDest)[0] = SubFloat( vSrc, 0 ); (*pDest)[1] = SubFloat( vSrc, 1 ); (*pDest)[2] = SubFloat( vSrc, 2 ); (*pDest)[3] = SubFloat( vSrc, 3 ); #else __m64 bottom = _mm_cvttps_pi32( vSrc ); __m64 top = _mm_cvttps_pi32( _mm_movehl_ps(vSrc,vSrc) ); *reinterpret_cast<__m64 *>(&(*pDest)[0]) = bottom; *reinterpret_cast<__m64 *>(&(*pDest)[2]) = top; _mm_empty(); #endif } #endif /// class FourVectors stores 4 independent vectors for use in SIMD processing. These vectors are /// stored in the format x x x x y y y y z z z z so that they can be efficiently SIMD-accelerated. class ALIGN16 FourVectors { public: fltx4 x, y, z; FORCEINLINE void DuplicateVector(Vector const &v) //< set all 4 vectors to the same vector value { x=ReplicateX4(v.x); y=ReplicateX4(v.y); z=ReplicateX4(v.z); } FORCEINLINE fltx4 const & operator[](int idx) const { return *((&x)+idx); } FORCEINLINE fltx4 & operator[](int idx) { return *((&x)+idx); } FORCEINLINE void operator+=(FourVectors const &b) //< add 4 vectors to another 4 vectors { x=AddSIMD(x,b.x); y=AddSIMD(y,b.y); z=AddSIMD(z,b.z); } FORCEINLINE void operator-=(FourVectors const &b) //< subtract 4 vectors from another 4 { x=SubSIMD(x,b.x); y=SubSIMD(y,b.y); z=SubSIMD(z,b.z); } FORCEINLINE void operator*=(FourVectors const &b) //< scale all four vectors per component scale { x=MulSIMD(x,b.x); y=MulSIMD(y,b.y); z=MulSIMD(z,b.z); } FORCEINLINE void operator*=(const fltx4 & scale) //< scale { x=MulSIMD(x,scale); y=MulSIMD(y,scale); z=MulSIMD(z,scale); } FORCEINLINE void operator*=(float scale) //< uniformly scale all 4 vectors { fltx4 scalepacked = ReplicateX4(scale); *this *= scalepacked; } FORCEINLINE fltx4 operator*(FourVectors const &b) const //< 4 dot products { fltx4 dot=MulSIMD(x,b.x); dot=MaddSIMD(y,b.y,dot); dot=MaddSIMD(z,b.z,dot); return dot; } FORCEINLINE fltx4 operator*(Vector const &b) const //< dot product all 4 vectors with 1 vector { fltx4 dot=MulSIMD(x,ReplicateX4(b.x)); dot=MaddSIMD(y,ReplicateX4(b.y), dot); dot=MaddSIMD(z,ReplicateX4(b.z), dot); return dot; } FORCEINLINE void VProduct(FourVectors const &b) //< component by component mul { x=MulSIMD(x,b.x); y=MulSIMD(y,b.y); z=MulSIMD(z,b.z); } FORCEINLINE void MakeReciprocal(void) //< (x,y,z)=(1/x,1/y,1/z) { x=ReciprocalSIMD(x); y=ReciprocalSIMD(y); z=ReciprocalSIMD(z); } FORCEINLINE void MakeReciprocalSaturate(void) //< (x,y,z)=(1/x,1/y,1/z), 1/0=1.0e23 { x=ReciprocalSaturateSIMD(x); y=ReciprocalSaturateSIMD(y); z=ReciprocalSaturateSIMD(z); } // Assume the given matrix is a rotation, and rotate these vectors by it. // If you have a long list of FourVectors structures that you all want // to rotate by the same matrix, use FourVectors::RotateManyBy() instead. inline void RotateBy(const matrix3x4_t& matrix); /// You can use this to rotate a long array of FourVectors all by the same /// matrix. The first parameter is the head of the array. The second is the /// number of vectors to rotate. The third is the matrix. static void RotateManyBy(FourVectors * RESTRICT pVectors, unsigned int numVectors, const matrix3x4_t& rotationMatrix ); /// Assume the vectors are points, and transform them in place by the matrix. inline void TransformBy(const matrix3x4_t& matrix); /// You can use this to Transform a long array of FourVectors all by the same /// matrix. The first parameter is the head of the array. The second is the /// number of vectors to rotate. The third is the matrix. The fourth is the /// output buffer, which must not overlap the pVectors buffer. This is not /// an in-place transformation. static void TransformManyBy(FourVectors * RESTRICT pVectors, unsigned int numVectors, const matrix3x4_t& rotationMatrix, FourVectors * RESTRICT pOut ); /// You can use this to Transform a long array of FourVectors all by the same /// matrix. The first parameter is the head of the array. The second is the /// number of vectors to rotate. The third is the matrix. The fourth is the /// output buffer, which must not overlap the pVectors buffer. /// This is an in-place transformation. static void TransformManyBy(FourVectors * RESTRICT pVectors, unsigned int numVectors, const matrix3x4_t& rotationMatrix ); // X(),Y(),Z() - get at the desired component of the i'th (0..3) vector. FORCEINLINE const float & X(int idx) const { // NOTE: if the output goes into a register, this causes a Load-Hit-Store stall (don't mix fpu/vpu math!) return SubFloat( (fltx4 &)x, idx ); } FORCEINLINE const float & Y(int idx) const { return SubFloat( (fltx4 &)y, idx ); } FORCEINLINE const float & Z(int idx) const { return SubFloat( (fltx4 &)z, idx ); } FORCEINLINE float & X(int idx) { return SubFloat( x, idx ); } FORCEINLINE float & Y(int idx) { return SubFloat( y, idx ); } FORCEINLINE float & Z(int idx) { return SubFloat( z, idx ); } FORCEINLINE Vector Vec(int idx) const //< unpack one of the vectors { return Vector( X(idx), Y(idx), Z(idx) ); } FourVectors(void) = default; FourVectors( FourVectors const &src ) { x=src.x; y=src.y; z=src.z; } FourVectors( fltx4 x, fltx4 y, fltx4 z ) { this->x=x; this->y=y; this->z=z; } FORCEINLINE void operator=( FourVectors const &src ) { x=src.x; y=src.y; z=src.z; } /// LoadAndSwizzle - load 4 Vectors into a FourVectors, performing transpose op FORCEINLINE void LoadAndSwizzle(Vector const &a, Vector const &b, Vector const &c, Vector const &d) { // TransposeSIMD has large sub-expressions that the compiler can't eliminate on x360 // use an unfolded implementation here #if _X360 fltx4 tx = LoadUnalignedSIMD( &a.x ); fltx4 ty = LoadUnalignedSIMD( &b.x ); fltx4 tz = LoadUnalignedSIMD( &c.x ); fltx4 tw = LoadUnalignedSIMD( &d.x ); fltx4 r0 = __vmrghw(tx, tz); fltx4 r1 = __vmrghw(ty, tw); fltx4 r2 = __vmrglw(tx, tz); fltx4 r3 = __vmrglw(ty, tw); x = __vmrghw(r0, r1); y = __vmrglw(r0, r1); z = __vmrghw(r2, r3); #else x = LoadUnalignedSIMD( &( a.x )); y = LoadUnalignedSIMD( &( b.x )); z = LoadUnalignedSIMD( &( c.x )); fltx4 w = LoadUnalignedSIMD( &( d.x )); // now, matrix is: // x y z ? // x y z ? // x y z ? // x y z ? TransposeSIMD(x, y, z, w); #endif } /// LoadAndSwizzleAligned - load 4 Vectors into a FourVectors, performing transpose op. /// all 4 vectors must be 128 bit boundary FORCEINLINE void LoadAndSwizzleAligned(const float *RESTRICT a, const float *RESTRICT b, const float *RESTRICT c, const float *RESTRICT d) { #if _X360 fltx4 tx = LoadAlignedSIMD(a); fltx4 ty = LoadAlignedSIMD(b); fltx4 tz = LoadAlignedSIMD(c); fltx4 tw = LoadAlignedSIMD(d); fltx4 r0 = __vmrghw(tx, tz); fltx4 r1 = __vmrghw(ty, tw); fltx4 r2 = __vmrglw(tx, tz); fltx4 r3 = __vmrglw(ty, tw); x = __vmrghw(r0, r1); y = __vmrglw(r0, r1); z = __vmrghw(r2, r3); #else x = LoadAlignedSIMD( a ); y = LoadAlignedSIMD( b ); z = LoadAlignedSIMD( c ); fltx4 w = LoadAlignedSIMD( d ); // now, matrix is: // x y z ? // x y z ? // x y z ? // x y z ? TransposeSIMD( x, y, z, w ); #endif } FORCEINLINE void LoadAndSwizzleAligned(Vector const &a, Vector const &b, Vector const &c, Vector const &d) { LoadAndSwizzleAligned( &a.x, &b.x, &c.x, &d.x ); } /// return the squared length of all 4 vectors FORCEINLINE fltx4 length2(void) const { return (*this)*(*this); } /// return the approximate length of all 4 vectors. uses the sqrt approximation instruction FORCEINLINE fltx4 length(void) const { return SqrtEstSIMD(length2()); } /// normalize all 4 vectors in place. not mega-accurate (uses reciprocal approximation instruction) FORCEINLINE void VectorNormalizeFast(void) { fltx4 mag_sq=(*this)*(*this); // length^2 (*this) *= ReciprocalSqrtEstSIMD(mag_sq); // *(1.0/sqrt(length^2)) } /// normalize all 4 vectors in place. FORCEINLINE void VectorNormalize(void) { fltx4 mag_sq=(*this)*(*this); // length^2 (*this) *= ReciprocalSqrtSIMD(mag_sq); // *(1.0/sqrt(length^2)) } /// construct a FourVectors from 4 separate Vectors FORCEINLINE FourVectors(Vector const &a, Vector const &b, Vector const &c, Vector const &d) { LoadAndSwizzle(a,b,c,d); } /// construct a FourVectors from 4 separate Vectors FORCEINLINE FourVectors(VectorAligned const &a, VectorAligned const &b, VectorAligned const &c, VectorAligned const &d) { LoadAndSwizzleAligned(a,b,c,d); } FORCEINLINE fltx4 DistToSqr( FourVectors const &pnt ) { fltx4 fl4dX = SubSIMD( pnt.x, x ); fltx4 fl4dY = SubSIMD( pnt.y, y ); fltx4 fl4dZ = SubSIMD( pnt.z, z ); return AddSIMD( MulSIMD( fl4dX, fl4dX), AddSIMD( MulSIMD( fl4dY, fl4dY ), MulSIMD( fl4dZ, fl4dZ ) ) ); } FORCEINLINE fltx4 TValueOfClosestPointOnLine( FourVectors const &p0, FourVectors const &p1 ) const { FourVectors lineDelta = p1; lineDelta -= p0; fltx4 OOlineDirDotlineDir = ReciprocalSIMD( p1 * p1 ); FourVectors v4OurPnt = *this; v4OurPnt -= p0; return MulSIMD( OOlineDirDotlineDir, v4OurPnt * lineDelta ); } FORCEINLINE fltx4 DistSqrToLineSegment( FourVectors const &p0, FourVectors const &p1 ) const { FourVectors lineDelta = p1; FourVectors v4OurPnt = *this; v4OurPnt -= p0; lineDelta -= p0; fltx4 OOlineDirDotlineDir = ReciprocalSIMD( lineDelta * lineDelta ); fltx4 fl4T = MulSIMD( OOlineDirDotlineDir, v4OurPnt * lineDelta ); fl4T = MinSIMD( fl4T, Four_Ones ); fl4T = MaxSIMD( fl4T, Four_Zeros ); lineDelta *= fl4T; return v4OurPnt.DistToSqr( lineDelta ); } }; /// form 4 cross products inline FourVectors operator ^(const FourVectors &a, const FourVectors &b) { FourVectors ret; ret.x=SubSIMD(MulSIMD(a.y,b.z),MulSIMD(a.z,b.y)); ret.y=SubSIMD(MulSIMD(a.z,b.x),MulSIMD(a.x,b.z)); ret.z=SubSIMD(MulSIMD(a.x,b.y),MulSIMD(a.y,b.x)); return ret; } /// component-by-componentwise MAX operator inline FourVectors maximum(const FourVectors &a, const FourVectors &b) { FourVectors ret; ret.x=MaxSIMD(a.x,b.x); ret.y=MaxSIMD(a.y,b.y); ret.z=MaxSIMD(a.z,b.z); return ret; } /// component-by-componentwise MIN operator inline FourVectors minimum(const FourVectors &a, const FourVectors &b) { FourVectors ret; ret.x=MinSIMD(a.x,b.x); ret.y=MinSIMD(a.y,b.y); ret.z=MinSIMD(a.z,b.z); return ret; } /// calculate reflection vector. incident and normal dir assumed normalized FORCEINLINE FourVectors VectorReflect( const FourVectors &incident, const FourVectors &normal ) { FourVectors ret = incident; fltx4 iDotNx2 = incident * normal; iDotNx2 = AddSIMD( iDotNx2, iDotNx2 ); FourVectors nPart = normal; nPart *= iDotNx2; ret -= nPart; // i-2(n*i)n return ret; } /// calculate slide vector. removes all components of a vector which are perpendicular to a normal vector. FORCEINLINE FourVectors VectorSlide( const FourVectors &incident, const FourVectors &normal ) { FourVectors ret = incident; fltx4 iDotN = incident * normal; FourVectors nPart = normal; nPart *= iDotN; ret -= nPart; // i-(n*i)n return ret; } // Assume the given matrix is a rotation, and rotate these vectors by it. // If you have a long list of FourVectors structures that you all want // to rotate by the same matrix, use FourVectors::RotateManyBy() instead. void FourVectors::RotateBy(const matrix3x4_t& matrix) { // Splat out each of the entries in the matrix to a fltx4. Do this // in the order that we will need them, to hide latency. I'm // avoiding making an array of them, so that they'll remain in // registers. fltx4 matSplat00, matSplat01, matSplat02, matSplat10, matSplat11, matSplat12, matSplat20, matSplat21, matSplat22; { // Load the matrix into local vectors. Sadly, matrix3x4_ts are // often unaligned. The w components will be the tranpose row of // the matrix, but we don't really care about that. fltx4 matCol0 = LoadUnalignedSIMD( matrix[0] ); fltx4 matCol1 = LoadUnalignedSIMD( matrix[1] ); fltx4 matCol2 = LoadUnalignedSIMD( matrix[2] ); matSplat00 = SplatXSIMD( matCol0 ); matSplat01 = SplatYSIMD( matCol0 ); matSplat02 = SplatZSIMD( matCol0 ); matSplat10 = SplatXSIMD( matCol1 ); matSplat11 = SplatYSIMD( matCol1 ); matSplat12 = SplatZSIMD( matCol1 ); matSplat20 = SplatXSIMD( matCol2 ); matSplat21 = SplatYSIMD( matCol2 ); matSplat22 = SplatZSIMD( matCol2 ); } // Trust in the compiler to schedule these operations correctly: fltx4 outX, outY, outZ; outX = AddSIMD( AddSIMD( MulSIMD( x, matSplat00 ), MulSIMD( y, matSplat01 ) ), MulSIMD( z, matSplat02 ) ); outY = AddSIMD( AddSIMD( MulSIMD( x, matSplat10 ), MulSIMD( y, matSplat11 ) ), MulSIMD( z, matSplat12 ) ); outZ = AddSIMD( AddSIMD( MulSIMD( x, matSplat20 ), MulSIMD( y, matSplat21 ) ), MulSIMD( z, matSplat22 ) ); x = outX; y = outY; z = outZ; } // Assume the given matrix is a rotation, and rotate these vectors by it. // If you have a long list of FourVectors structures that you all want // to rotate by the same matrix, use FourVectors::RotateManyBy() instead. void FourVectors::TransformBy(const matrix3x4_t& matrix) { // Splat out each of the entries in the matrix to a fltx4. Do this // in the order that we will need them, to hide latency. I'm // avoiding making an array of them, so that they'll remain in // registers. fltx4 matSplat00, matSplat01, matSplat02, matSplat10, matSplat11, matSplat12, matSplat20, matSplat21, matSplat22; { // Load the matrix into local vectors. Sadly, matrix3x4_ts are // often unaligned. The w components will be the tranpose row of // the matrix, but we don't really care about that. fltx4 matCol0 = LoadUnalignedSIMD( matrix[0] ); fltx4 matCol1 = LoadUnalignedSIMD( matrix[1] ); fltx4 matCol2 = LoadUnalignedSIMD( matrix[2] ); matSplat00 = SplatXSIMD( matCol0 ); matSplat01 = SplatYSIMD( matCol0 ); matSplat02 = SplatZSIMD( matCol0 ); matSplat10 = SplatXSIMD( matCol1 ); matSplat11 = SplatYSIMD( matCol1 ); matSplat12 = SplatZSIMD( matCol1 ); matSplat20 = SplatXSIMD( matCol2 ); matSplat21 = SplatYSIMD( matCol2 ); matSplat22 = SplatZSIMD( matCol2 ); } // Trust in the compiler to schedule these operations correctly: fltx4 outX, outY, outZ; outX = MaddSIMD( z, matSplat02, AddSIMD( MulSIMD( x, matSplat00 ), MulSIMD( y, matSplat01 ) ) ); outY = MaddSIMD( z, matSplat12, AddSIMD( MulSIMD( x, matSplat10 ), MulSIMD( y, matSplat11 ) ) ); outZ = MaddSIMD( z, matSplat22, AddSIMD( MulSIMD( x, matSplat20 ), MulSIMD( y, matSplat21 ) ) ); x = AddSIMD( outX, ReplicateX4( matrix[0][3] )); y = AddSIMD( outY, ReplicateX4( matrix[1][3] )); z = AddSIMD( outZ, ReplicateX4( matrix[2][3] )); } /// quick, low quality perlin-style noise() function suitable for real time use. /// return value is -1..1. Only reliable around +/- 1 million or so. fltx4 NoiseSIMD( const fltx4 & x, const fltx4 & y, const fltx4 & z ); fltx4 NoiseSIMD( FourVectors const &v ); // vector valued noise direction FourVectors DNoiseSIMD( FourVectors const &v ); // vector value "curl" noise function. see http://hyperphysics.phy-astr.gsu.edu/hbase/curl.html FourVectors CurlNoiseSIMD( FourVectors const &v ); /// calculate the absolute value of a packed single inline fltx4 fabs( const fltx4 & x ) { return AndSIMD( x, LoadAlignedSIMD( g_SIMD_clear_signmask ) ); } /// negate all four components of a SIMD packed single inline fltx4 fnegate( const fltx4 & x ) { return XorSIMD( x, LoadAlignedSIMD( g_SIMD_signmask ) ); } fltx4 Pow_FixedPoint_Exponent_SIMD( const fltx4 & x, int exponent); // PowSIMD - raise a SIMD register to a power. This is analogous to the C pow() function, with some // restictions: fractional exponents are only handled with 2 bits of precision. Basically, // fractions of 0,.25,.5, and .75 are handled. PowSIMD(x,.30) will be the same as PowSIMD(x,.25). // negative and fractional powers are handled by the SIMD reciprocal and square root approximation // instructions and so are not especially accurate ----Note that this routine does not raise // numeric exceptions because it uses SIMD--- This routine is O(log2(exponent)). inline fltx4 PowSIMD( const fltx4 & x, float exponent ) { return Pow_FixedPoint_Exponent_SIMD(x,(int) (4.0*exponent)); } // random number generation - generate 4 random numbers quickly. void SeedRandSIMD(uint32 seed); // seed the random # generator fltx4 RandSIMD( int nContext = 0 ); // return 4 numbers in the 0..1 range // for multithreaded, you need to use these and use the argument form of RandSIMD: int GetSIMDRandContext( void ); void ReleaseSIMDRandContext( int nContext ); FORCEINLINE fltx4 RandSignedSIMD( void ) // -1..1 { return SubSIMD( MulSIMD( Four_Twos, RandSIMD() ), Four_Ones ); } // SIMD versions of mathlib simplespline functions // hermite basis function for smooth interpolation // Similar to Gain() above, but very cheap to call // value should be between 0 & 1 inclusive inline fltx4 SimpleSpline( const fltx4 & value ) { // Arranged to avoid a data dependency between these two MULs: fltx4 valueDoubled = MulSIMD( value, Four_Twos ); fltx4 valueSquared = MulSIMD( value, value ); // Nice little ease-in, ease-out spline-like curve return SubSIMD( MulSIMD( Four_Threes, valueSquared ), MulSIMD( valueDoubled, valueSquared ) ); } // remaps a value in [startInterval, startInterval+rangeInterval] from linear to // spline using SimpleSpline inline fltx4 SimpleSplineRemapValWithDeltas( const fltx4 & val, const fltx4 & A, const fltx4 & BMinusA, const fltx4 & OneOverBMinusA, const fltx4 & C, const fltx4 & DMinusC ) { // if ( A == B ) // return val >= B ? D : C; fltx4 cVal = MulSIMD( SubSIMD( val, A), OneOverBMinusA ); return AddSIMD( C, MulSIMD( DMinusC, SimpleSpline( cVal ) ) ); } inline fltx4 SimpleSplineRemapValWithDeltasClamped( const fltx4 & val, const fltx4 & A, const fltx4 & BMinusA, const fltx4 & OneOverBMinusA, const fltx4 & C, const fltx4 & DMinusC ) { // if ( A == B ) // return val >= B ? D : C; fltx4 cVal = MulSIMD( SubSIMD( val, A), OneOverBMinusA ); cVal = MinSIMD( Four_Ones, MaxSIMD( Four_Zeros, cVal ) ); return AddSIMD( C, MulSIMD( DMinusC, SimpleSpline( cVal ) ) ); } FORCEINLINE fltx4 FracSIMD( const fltx4 &val ) { fltx4 fl4Abs = fabs( val ); fltx4 ival = SubSIMD( AddSIMD( fl4Abs, Four_2ToThe23s ), Four_2ToThe23s ); ival = MaskedAssign( CmpGtSIMD( ival, fl4Abs ), SubSIMD( ival, Four_Ones ), ival ); return XorSIMD( SubSIMD( fl4Abs, ival ), XorSIMD( val, fl4Abs ) ); // restore sign bits } FORCEINLINE fltx4 Mod2SIMD( const fltx4 &val ) { fltx4 fl4Abs = fabs( val ); fltx4 ival = SubSIMD( AndSIMD( LoadAlignedSIMD( (float *) g_SIMD_lsbmask ), AddSIMD( fl4Abs, Four_2ToThe23s ) ), Four_2ToThe23s ); ival = MaskedAssign( CmpGtSIMD( ival, fl4Abs ), SubSIMD( ival, Four_Twos ), ival ); return XorSIMD( SubSIMD( fl4Abs, ival ), XorSIMD( val, fl4Abs ) ); // restore sign bits } FORCEINLINE fltx4 Mod2SIMDPositiveInput( const fltx4 &val ) { fltx4 ival = SubSIMD( AndSIMD( LoadAlignedSIMD( g_SIMD_lsbmask ), AddSIMD( val, Four_2ToThe23s ) ), Four_2ToThe23s ); ival = MaskedAssign( CmpGtSIMD( ival, val ), SubSIMD( ival, Four_Twos ), ival ); return SubSIMD( val, ival ); } // approximate sin of an angle, with -1..1 representing the whole sin wave period instead of -pi..pi. // no range reduction is done - for values outside of 0..1 you won't like the results FORCEINLINE fltx4 _SinEst01SIMD( const fltx4 &val ) { // really rough approximation - x*(4-x*4) - a parabola. s(0) = 0, s(.5) = 1, s(1)=0, smooth in-between. // sufficient for simple oscillation. return MulSIMD( val, SubSIMD( Four_Fours, MulSIMD( val, Four_Fours ) ) ); } FORCEINLINE fltx4 _Sin01SIMD( const fltx4 &val ) { // not a bad approximation : parabola always over-estimates. Squared parabola always // underestimates. So lets blend between them: goodsin = badsin + .225*( badsin^2-badsin) fltx4 fl4BadEst = MulSIMD( val, SubSIMD( Four_Fours, MulSIMD( val, Four_Fours ) ) ); return AddSIMD( MulSIMD( Four_Point225s, SubSIMD( MulSIMD( fl4BadEst, fl4BadEst ), fl4BadEst ) ), fl4BadEst ); } // full range useable implementations FORCEINLINE fltx4 SinEst01SIMD( const fltx4 &val ) { fltx4 fl4Abs = fabs( val ); fltx4 fl4Reduced2 = Mod2SIMDPositiveInput( fl4Abs ); fltx4 fl4OddMask = CmpGeSIMD( fl4Reduced2, Four_Ones ); fltx4 fl4val = SubSIMD( fl4Reduced2, AndSIMD( Four_Ones, fl4OddMask ) ); fltx4 fl4Sin = _SinEst01SIMD( fl4val ); fl4Sin = XorSIMD( fl4Sin, AndSIMD( LoadAlignedSIMD( g_SIMD_signmask ), XorSIMD( val, fl4OddMask ) ) ); return fl4Sin; } FORCEINLINE fltx4 Sin01SIMD( const fltx4 &val ) { fltx4 fl4Abs = fabs( val ); fltx4 fl4Reduced2 = Mod2SIMDPositiveInput( fl4Abs ); fltx4 fl4OddMask = CmpGeSIMD( fl4Reduced2, Four_Ones ); fltx4 fl4val = SubSIMD( fl4Reduced2, AndSIMD( Four_Ones, fl4OddMask ) ); fltx4 fl4Sin = _Sin01SIMD( fl4val ); fl4Sin = XorSIMD( fl4Sin, AndSIMD( LoadAlignedSIMD( g_SIMD_signmask ), XorSIMD( val, fl4OddMask ) ) ); return fl4Sin; } // Schlick style Bias approximation see graphics gems 4 : bias(t,a)= t/( (1/a-2)*(1-t)+1) FORCEINLINE fltx4 PreCalcBiasParameter( const fltx4 &bias_parameter ) { // convert perlin-style-bias parameter to the value right for the approximation return SubSIMD( ReciprocalSIMD( bias_parameter ), Four_Twos ); } FORCEINLINE fltx4 BiasSIMD( const fltx4 &val, const fltx4 &precalc_param ) { // similar to bias function except pass precalced bias value from calling PreCalcBiasParameter. //!!speed!! use reciprocal est? //!!speed!! could save one op by precalcing _2_ values return DivSIMD( val, AddSIMD( MulSIMD( precalc_param, SubSIMD( Four_Ones, val ) ), Four_Ones ) ); } //----------------------------------------------------------------------------- // Box/plane test // NOTE: The w component of emins + emaxs must be 1 for this to work //----------------------------------------------------------------------------- FORCEINLINE int BoxOnPlaneSideSIMD( const fltx4& emins, const fltx4& emaxs, const cplane_t *p, float tolerance = 0.f ) { fltx4 corners[2]; fltx4 normal = LoadUnalignedSIMD( p->normal.Base() ); fltx4 dist = ReplicateX4( -p->dist ); normal = SetWSIMD( normal, dist ); fltx4 t4 = ReplicateX4( tolerance ); fltx4 negt4 = ReplicateX4( -tolerance ); fltx4 cmp = CmpGeSIMD( normal, Four_Zeros ); corners[0] = MaskedAssign( cmp, emaxs, emins ); corners[1] = MaskedAssign( cmp, emins, emaxs ); fltx4 dot1 = Dot4SIMD( normal, corners[0] ); fltx4 dot2 = Dot4SIMD( normal, corners[1] ); cmp = CmpGeSIMD( dot1, t4 ); fltx4 cmp2 = CmpGtSIMD( negt4, dot2 ); fltx4 result = MaskedAssign( cmp, Four_Ones, Four_Zeros ); fltx4 result2 = MaskedAssign( cmp2, Four_Twos, Four_Zeros ); result = AddSIMD( result, result2 ); intx4 sides; ConvertStoreAsIntsSIMD( &sides, result ); return sides[0]; } #endif // _ssemath_h