mirror of
https://github.com/ncblakely/GiantsTools
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112 lines
2.5 KiB
C++
112 lines
2.5 KiB
C++
//-------------------------------------------------------------------------------------
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// DirectXMathSSE3.h -- SSE3 extensions for SIMD C++ Math library
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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//
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// http://go.microsoft.com/fwlink/?LinkID=615560
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//-------------------------------------------------------------------------------------
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#pragma once
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#if defined(_M_ARM) || defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || __arm__ || __aarch64__
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#error SSE3 not supported on ARM platform
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#endif
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#include <pmmintrin.h>
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#include <DirectXMath.h>
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namespace DirectX
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{
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namespace SSE3
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{
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inline bool XMVerifySSE3Support()
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{
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// Should return true on AMD Athlon 64, AMD Phenom, and Intel Pentium 4 or later processors
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// See http://msdn.microsoft.com/en-us/library/hskdteyh.aspx
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int CPUInfo[4] = { -1 };
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#if defined(__clang__) || defined(__GNUC__)
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__cpuid(0, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
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#else
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__cpuid(CPUInfo, 0);
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#endif
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if ( CPUInfo[0] < 1 )
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return false;
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#if defined(__clang__) || defined(__GNUC__)
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__cpuid(1, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
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#else
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__cpuid(CPUInfo, 1);
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#endif
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// We only check for SSE3 instruction set. SSSE3 instructions are not used.
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return ( (CPUInfo[2] & 0x1) != 0 );
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}
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inline XMVECTOR XM_CALLCONV XMVector2Dot
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(
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FXMVECTOR V1,
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FXMVECTOR V2
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)
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{
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XMVECTOR vTemp = _mm_mul_ps(V1,V2);
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vTemp = _mm_hadd_ps(vTemp,vTemp);
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return _mm_shuffle_ps(vTemp,vTemp,_MM_SHUFFLE(0,0,0,0));
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}
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inline XMVECTOR XM_CALLCONV XMVector2LengthSq( FXMVECTOR V )
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{
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return SSE3::XMVector2Dot(V, V);
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}
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inline XMVECTOR XM_CALLCONV XMVector3Dot
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(
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FXMVECTOR V1,
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FXMVECTOR V2
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)
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{
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XMVECTOR vTemp = _mm_mul_ps(V1,V2);
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vTemp = _mm_and_ps( vTemp, g_XMMask3 );
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vTemp = _mm_hadd_ps(vTemp,vTemp);
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return _mm_hadd_ps(vTemp,vTemp);
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}
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inline XMVECTOR XM_CALLCONV XMVector3LengthSq( FXMVECTOR V )
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{
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return SSE3::XMVector3Dot(V, V);
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}
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inline XMVECTOR XM_CALLCONV XMVector4Dot
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(
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FXMVECTOR V1,
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FXMVECTOR V2
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)
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{
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XMVECTOR vTemp = _mm_mul_ps(V1,V2);
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vTemp = _mm_hadd_ps( vTemp, vTemp );
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return _mm_hadd_ps( vTemp, vTemp );
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}
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inline XMVECTOR XM_CALLCONV XMVector4LengthSq( FXMVECTOR V )
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{
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return SSE3::XMVector4Dot(V, V);
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}
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inline XMVECTOR XM_CALLCONV XMVectorSwizzle_0022( FXMVECTOR V )
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{
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return _mm_moveldup_ps(V);
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}
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inline XMVECTOR XM_CALLCONV XMVectorSwizzle_1133( FXMVECTOR V )
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{
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return _mm_movehdup_ps(V);
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}
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} // namespace SSE3
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} // namespace DirectX
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