mirror of
https://github.com/microsoft/DirectXMath
synced 2024-11-08 21:50:09 +00:00
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
//-------------------------------------------------------------------------------------
|
|
// DirectXMathBE.h -- Big-endian swap extensions for SIMD C++ Math library
|
|
//
|
|
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
|
|
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
|
|
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
|
|
// PARTICULAR PURPOSE.
|
|
//
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
|
//
|
|
// http://go.microsoft.com/fwlink/?LinkID=615560
|
|
//-------------------------------------------------------------------------------------
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma once
|
|
#endif
|
|
|
|
#pragma warning(push)
|
|
#pragma warning(disable : 4987)
|
|
#include <intrin.h>
|
|
#pragma warning(pop)
|
|
|
|
#ifndef _M_ARM
|
|
#include <tmmintrin.h>
|
|
#endif
|
|
|
|
#include <DirectXMath.h>
|
|
|
|
namespace DirectX
|
|
{
|
|
|
|
inline XMVECTOR XM_CALLCONV XMVectorEndian
|
|
(
|
|
FXMVECTOR V
|
|
)
|
|
{
|
|
#if defined(_XM_ARM_NEON_INTRINSICS_) && !defined(_XM_NO_INTRINSICS_)
|
|
static const XMVECTORU32 idx = { 0x00010203, 0x04050607, 0x08090A0B, 0x0C0D0E0F };
|
|
|
|
int8x8x2_t tbl;
|
|
tbl.val[0] = vget_low_f32(V);
|
|
tbl.val[1] = vget_high_f32(V);
|
|
|
|
const __n64 rL = vtbl2_u8( tbl, vget_low_f32(idx) );
|
|
const __n64 rH = vtbl2_u8( tbl, vget_high_f32(idx) );
|
|
return vcombine_f32( rL, rH );
|
|
#else
|
|
XMVECTORU32 E;
|
|
E.v = V;
|
|
uint32_t value = E.u[0];
|
|
E.u[0] = ( (value << 24) | ((value & 0xFF00) << 8) | ((value & 0xFF0000) >> 8) | (value >> 24) );
|
|
value = E.u[1];
|
|
E.u[1] = ( (value << 24) | ((value & 0xFF00) << 8) | ((value & 0xFF0000) >> 8) | (value >> 24) );
|
|
value = E.u[2];
|
|
E.u[2] = ( (value << 24) | ((value & 0xFF00) << 8) | ((value & 0xFF0000) >> 8) | (value >> 24) );
|
|
value = E.u[3];
|
|
E.u[3] = ( (value << 24) | ((value & 0xFF00) << 8) | ((value & 0xFF0000) >> 8) | (value >> 24) );
|
|
return E.v;
|
|
#endif
|
|
}
|
|
|
|
|
|
#ifndef _M_ARM
|
|
namespace SSSE3
|
|
{
|
|
|
|
inline bool XMVerifySSSE3Support()
|
|
{
|
|
// Should return true on AMD Bulldozer, Intel Core i7/i5/i3, Intel Atom, or later processors
|
|
|
|
// See http://msdn.microsoft.com/en-us/library/hskdteyh.aspx
|
|
int CPUInfo[4] = {-1};
|
|
__cpuid( CPUInfo, 0 );
|
|
|
|
if ( CPUInfo[0] < 1 )
|
|
return false;
|
|
|
|
__cpuid(CPUInfo, 1 );
|
|
|
|
// Check for SSSE3 instruction set.
|
|
return ( (CPUInfo[2] & 0x200) != 0 );
|
|
}
|
|
|
|
inline XMVECTOR XM_CALLCONV XMVectorEndian
|
|
(
|
|
FXMVECTOR V
|
|
)
|
|
{
|
|
static const XMVECTORU32 idx = { 0x00010203, 0x04050607, 0x08090A0B, 0x0C0D0E0F };
|
|
|
|
__m128i Result = _mm_shuffle_epi8( _mm_castps_si128(V), idx );
|
|
return _mm_castsi128_ps( Result );
|
|
}
|
|
|
|
}; // namespace SSSE3
|
|
#endif // !_M_ARM
|
|
|
|
} // namespace DirectX;
|