drewcassidy/nvidia-texture-tools
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some more experiments.

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This commit is contained in:
castano 2008-01-06 01:57:43 +00:00
parent 5a33fedab5
commit e36287c607
1 changed files with 13 additions and 12 deletions
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25
src/nvtt/squish/simd_3dnow.h
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@ -55,11 +55,12 @@ public:
return *this; return *this;
} }
/* Vec4( float x, float y, float z, float w ) Vec4( float x, float y, float z, float w )
{ {
m_v = _mm_setr_ps( x, y, z, w ); m_v0 = _mm_set_pi32( *(int *)&x, *(int *)&y );
m_v1 = _mm_set_pi32( *(int *)&z, *(int *)&w );
} }
*/
/* Vec3 GetVec3() const /* Vec3 GetVec3() const
{ {
#ifdef __GNUC__ #ifdef __GNUC__
@ -164,22 +165,22 @@ public:
_m_pfmax( left.m_v1, right.m_v1 )); _m_pfmax( left.m_v1, right.m_v1 ));
} }
/* friend Vec4 Truncate( Vec4::Arg v ) friend Vec4 Truncate( Vec4::Arg v )
{ {
// convert to ints // convert to ints
__m128 input = v.m_v; __m64 i0 = _m_pf2id( v.m_v0 );
__m64 lo = _mm_cvttps_pi32( input ); __m64 i1 = _m_pf2id( v.m_v1 );
__m64 hi = _mm_cvttps_pi32( _mm_movehl_ps( input, input ) );
// convert to floats // convert to floats
__m128 part = _mm_movelh_ps( input, _mm_cvtpi32_ps( input, hi ) ); __m64 f0 = _m_pi2fd( i0 );
__m128 truncated = _mm_cvtpi32_ps( part, lo ); __m64 f1 = _m_pi2fd( i1 );
// clear out the MMX multimedia state to allow FP calls later // clear out the MMX multimedia state to allow FP calls later
_m_femms(); //_m_femms();
return Vec4( truncated );
return Vec4( f0, f1 );
} }
*/
friend Vec4 CompareEqual( Vec4::Arg left, Vec4::Arg right ) friend Vec4 CompareEqual( Vec4::Arg left, Vec4::Arg right )
{ {
return Vec4( return Vec4(