feat(gx): add directxmath for MinGW

vendor/directxmath-3.19.0/Extensions/DirectXMathSSE3.h

@@ -0,0 +1,111 @@
+//-------------------------------------------------------------------------------------
+// DirectXMathSSE3.h -- SSE3 extensions for SIMD C++ Math library
+//
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+//
+// http://go.microsoft.com/fwlink/?LinkID=615560
+//-------------------------------------------------------------------------------------
+
+#pragma once
+
+#if defined(_M_ARM) || defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || __arm__ || __aarch64__
+#error SSE3 not supported on ARM platform
+#endif
+
+#include <pmmintrin.h>
+
+#include <DirectXMath.h>
+
+namespace DirectX
+{
+
+namespace SSE3
+{
+
+inline bool XMVerifySSE3Support()
+{
+    // Should return true on AMD Athlon 64, AMD Phenom, and Intel Pentium 4 or later processors
+
+    // See http://msdn.microsoft.com/en-us/library/hskdteyh.aspx
+    int CPUInfo[4] = { -1 };
+#if (defined(__clang__) || defined(__GNUC__)) && defined(__cpuid)
+    __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__)) && defined(__cpuid)
+    __cpuid(1, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
+#else
+    __cpuid(CPUInfo, 1);
+#endif
+
+    // We only check for SSE3 instruction set. SSSE3 instructions are not used.
+    return ( (CPUInfo[2] & 0x1) != 0 );
+}
+
+inline XMVECTOR XM_CALLCONV XMVector2Dot
+(
+    FXMVECTOR V1, 
+    FXMVECTOR V2
+)
+{
+    XMVECTOR vTemp = _mm_mul_ps(V1,V2);
+    vTemp = _mm_hadd_ps(vTemp,vTemp);
+    return _mm_shuffle_ps(vTemp,vTemp,_MM_SHUFFLE(0,0,0,0));
+}
+
+inline XMVECTOR XM_CALLCONV XMVector2LengthSq( FXMVECTOR V )
+{
+    return SSE3::XMVector2Dot(V, V);
+}
+
+inline XMVECTOR XM_CALLCONV XMVector3Dot
+(
+    FXMVECTOR V1, 
+    FXMVECTOR V2
+)
+{
+    XMVECTOR vTemp = _mm_mul_ps(V1,V2);
+    vTemp = _mm_and_ps( vTemp, g_XMMask3 );
+    vTemp = _mm_hadd_ps(vTemp,vTemp);
+    return _mm_hadd_ps(vTemp,vTemp);
+}
+
+inline XMVECTOR XM_CALLCONV XMVector3LengthSq( FXMVECTOR V )
+{
+    return SSE3::XMVector3Dot(V, V);
+}
+
+inline XMVECTOR XM_CALLCONV XMVector4Dot
+(
+    FXMVECTOR V1, 
+    FXMVECTOR V2
+)
+{
+    XMVECTOR vTemp = _mm_mul_ps(V1,V2);
+    vTemp = _mm_hadd_ps( vTemp, vTemp );
+    return _mm_hadd_ps( vTemp, vTemp );
+}
+
+inline XMVECTOR XM_CALLCONV XMVector4LengthSq( FXMVECTOR V )
+{
+    return SSE3::XMVector4Dot(V, V);
+}
+
+inline XMVECTOR XM_CALLCONV XMVectorSwizzle_0022( FXMVECTOR V )
+{
+    return _mm_moveldup_ps(V);
+}
+
+inline XMVECTOR XM_CALLCONV XMVectorSwizzle_1133( FXMVECTOR V )
+{
+    return _mm_movehdup_ps(V);
+}
+
+} // namespace SSE3
+
+} // namespace DirectX