96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
//-------------------------------------------------------------------------------------
|
|
// DirectXMathBE.h -- Big-endian swap extensions for SIMD C++ Math library
|
|
//
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
|
// Licensed under the MIT License.
|
|
//
|
|
// http://go.microsoft.com/fwlink/?LinkID=615560
|
|
//-------------------------------------------------------------------------------------
|
|
|
|
#pragma once
|
|
|
|
#if (defined(_M_IX86) || defined(_M_X64) || __i386__ || __x86_64__) && !defined(_M_HYBRID_X86_ARM64)
|
|
#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 = { { { 0x00010203u, 0x04050607u, 0x08090A0Bu, 0x0C0D0E0Fu } } };
|
|
|
|
uint8x8x2_t tbl;
|
|
tbl.val[0] = vreinterpret_u8_f32(vget_low_f32(V));
|
|
tbl.val[1] = vreinterpret_u8_f32(vget_high_f32(V));
|
|
|
|
const uint8x8_t rL = vtbl2_u8(tbl, vget_low_u32(idx));
|
|
const uint8x8_t rH = vtbl2_u8(tbl, vget_high_u32(idx));
|
|
return vcombine_f32(vreinterpret_f32_u8(rL), vreinterpret_f32_u8(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
|
|
}
|
|
|
|
|
|
#if (defined(_M_IX86) || defined(_M_X64) || __i386__ || __x86_64__) && !defined(_M_HYBRID_X86_ARM64)
|
|
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 };
|
|
#if defined(__clang__) || defined(__GNUC__)
|
|
__cpuid(0, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
|
|
#else
|
|
__cpuid(CPUInfo, 0);
|
|
#endif
|
|
|
|
if ( CPUInfo[0] < 1 )
|
|
return false;
|
|
|
|
#if defined(__clang__) || defined(__GNUC__)
|
|
__cpuid(1, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
|
|
#else
|
|
__cpuid(CPUInfo, 1);
|
|
#endif
|
|
|
|
// Check for SSSE3 instruction set.
|
|
return ( (CPUInfo[2] & 0x200) != 0 );
|
|
}
|
|
|
|
inline XMVECTOR XM_CALLCONV XMVectorEndian
|
|
(
|
|
FXMVECTOR V
|
|
)
|
|
{
|
|
static const XMVECTORU32 idx = { { { 0x00010203u, 0x04050607u, 0x08090A0Bu, 0x0C0D0E0Fu } } };
|
|
|
|
__m128i Result = _mm_shuffle_epi8( _mm_castps_si128(V), idx );
|
|
return _mm_castsi128_ps( Result );
|
|
}
|
|
|
|
} // namespace SSSE3
|
|
#endif // X86 || X64
|
|
|
|
} // namespace DirectX
|