HWMatrix Struct Reference

#include <SSE.h>

Class Description

This class represents a four by four matrix stored in the SSE registers.

Definition at line 265 of file SSE.h.

Public Member Functions
	HWMatrix (void) __attribute__((always_inline))
	HWMatrix (const mudbox::Matrix &m) __attribute__((always_inline))
void	MirrorX (void) __attribute__((always_inline))
HWVector	Transform (const HWVector &v, float w=1.0f) const __attribute__((always_inline))
HWVector	ProjectedTransform (const HWVector &v) const __attribute__((always_inline))
	MB_SSE_ALIGN16_VAR (__m128 r0)
	MB_SSE_ALIGN16_VAR (__m128 r1)
	MB_SSE_ALIGN16_VAR (__m128 r2)
	MB_SSE_ALIGN16_VAR (__m128 r3)

Constructor & Destructor Documentation

HWMatrix ( void  )

inline

Definition at line 267 of file SSE.h.

{};

HWMatrix ( const mudbox::Matrix &  m )

inline

Definition at line 268 of file SSE.h.

    {
        r0 = _mm_loadu_ps( &m._11 );
        r1 = _mm_loadu_ps( &m._21 );
        r2 = _mm_loadu_ps( &m._31 );
        r3 = _mm_loadu_ps( &m._41 );
    };

Member Function Documentation

void MirrorX ( void  )

inline

Definition at line 275 of file SSE.h.

    {
        r0 = _mm_shuffle_ps( r0, r0, _MM_SHUFFLE(0, 1, 2, 3) );
        r1 = _mm_shuffle_ps( r1, r1, _MM_SHUFFLE(0, 1, 2, 3) );
        r2 = _mm_shuffle_ps( r2, r2, _MM_SHUFFLE(0, 1, 2, 3) );
        r3 = _mm_shuffle_ps( r3, r3, _MM_SHUFFLE(0, 1, 2, 3) );
    };

HWVector Transform ( const HWVector &  v, float  w = 1.0f  ) const

inline

Definition at line 282 of file SSE.h.

    {
        // Represents v * M
        // v is a row vector.

        MB_SSE_ALIGN16_VAR(float c[4]) = { w, w, w, w };

        __m128 v0 = _mm_shuffle_ps( v.v, v.v, _MM_SHUFFLE(3,3,3,3) );
        __m128 v1 = _mm_shuffle_ps( v.v, v.v, _MM_SHUFFLE(2,2,2,2) );
        __m128 v2 = _mm_shuffle_ps( v.v, v.v, _MM_SHUFFLE(1,1,1,1) );
        __m128 v3 = _mm_load_ps( c );

        __m128 a0 = _mm_mul_ps( v0, r0 );
        __m128 a1 = _mm_mul_ps( v1, r1 );
        __m128 a2 = _mm_mul_ps( v2, r2 );
        __m128 a3 = _mm_mul_ps( v3, r3 );

        __m128 r = _mm_add_ps( a0, _mm_add_ps( a1, _mm_add_ps( a2, a3 ) ) );

        HWVector z;
        z.v = r;
        return z;
    };

HWVector ProjectedTransform ( const HWVector &  v ) const

inline

Definition at line 305 of file SSE.h.

    {
        static MB_SSE_ALIGN16_VAR(float c[4]) = { 1, 1, 1, 1 };

        __m128 v0 = _mm_shuffle_ps( v.v, v.v, _MM_SHUFFLE(3,3,3,3) );
        __m128 v1 = _mm_shuffle_ps( v.v, v.v, _MM_SHUFFLE(2,2,2,2) );
        __m128 v2 = _mm_shuffle_ps( v.v, v.v, _MM_SHUFFLE(1,1,1,1) );
        __m128 v3 = _mm_load_ps( c );

        __m128 a0 = _mm_mul_ps( v0, r0 );
        __m128 a1 = _mm_mul_ps( v1, r1 );
        __m128 a2 = _mm_mul_ps( v2, r2 );
        __m128 a3 = _mm_mul_ps( v3, r3 );

        __m128 r = _mm_add_ps( a0, _mm_add_ps( a1, _mm_add_ps( a2, a3 ) ) );
        __m128 d = _mm_shuffle_ps( r, r, _MM_SHUFFLE(3,3,3,3) );

        HWVector z;
        z.v = _mm_div_ps( r, d );
        return z;
    };

MB_SSE_ALIGN16_VAR

(

__m128

r0

)

MB_SSE_ALIGN16_VAR

(

__m128

r1

)

MB_SSE_ALIGN16_VAR

(

__m128

r2

)

MB_SSE_ALIGN16_VAR

(

__m128

r3

)

---

The documentation for this struct was generated from the following file:

• Mudbox/SSE.h