I searched trough the forums and noticed some old threads about people having troubles with ditching the D3DXVECTOR# values and working with the XMFLOAT# ones and there I saw a bunch of links with explanations from MSDN and the likes,so I got the basics of how to work around with them(using XMVECTOR for the intristic XM functions and XMFLOAT# for storage/same w/ XMMATRIX and XMFLOAT4X4).The problem is whenever I do anything with it I get a break point at some place in the xnamath header that doesn't really tell me anything.For instance when I just use a test variable like this:
XMFLOAT4X4 test = XMFLOAT4X4(1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 2.0f, 0.0f, 0.0f,
0.0f, 0.0f, 4.0f, 0.0f,
1.0f, 2.0f, 3.0f, 1.0f);
XMMATRIX I = XMMatrixIdentity();
XMStoreFloat4x4(test, I);
XMFINLINE VOID XMStoreFloat4x4
(
XMFLOAT4X4* pDestination,
CXMMATRIX M
)
{
#if defined(_XM_NO_INTRINSICS_) || defined(XM_NO_MISALIGNED_VECTOR_ACCESS)
XMStoreFloat4x4NC(pDestination, M);
#elif defined(_XM_SSE_INTRINSICS_)
XMASSERT(pDestination); // <<<<<<<THIS ONE
_mm_storeu_ps( &pDestination->_11, M.r[0] );
_mm_storeu_ps( &pDestination->_21, M.r[1] );
_mm_storeu_ps( &pDestination->_31, M.r[2] );
_mm_storeu_ps( &pDestination->_41, M.r[3] );
#else // _XM_VMX128_INTRINSICS_
#endif // _XM_VMX128_INTRINSICS_
}
The third and top call is at xnamathmisc.inl at ''__debugbreak();'' :XMINLINE VOID XMAssert
(
CONST CHAR* pExpression,
CONST CHAR* pFileName,
UINT LineNumber
)
{
CHAR aLineString[XMASSERT_LINE_STRING_SIZE];
CHAR* pLineString;
UINT Line;
aLineString[XMASSERT_LINE_STRING_SIZE - 2] = '0';
aLineString[XMASSERT_LINE_STRING_SIZE - 1] = '\0';
for (Line = LineNumber, pLineString = aLineString + XMASSERT_LINE_STRING_SIZE - 2;
Line != 0 && pLineString >= aLineString;
Line /= 10, pLineString--)
{
*pLineString = (CHAR)('0' + (Line % 10));
}
#ifndef NO_OUTPUT_DEBUG_STRING
OutputDebugStringA("Assertion failed: ");
OutputDebugStringA(pExpression);
OutputDebugStringA(", file ");
OutputDebugStringA(pFileName);
OutputDebugStringA(", line ");
OutputDebugStringA(pLineString + 1);
OutputDebugStringA("\r\n");
#else
DbgPrint("Assertion failed: %s, file %s, line %d\r\n", pExpression, pFileName, LineNumber);
#endif
__debugbreak(); // <<<<<<THIS ONE
}
(Same thing happens with vectors and xmfloats)
So XMStoreFloat4x4 calls XMASSERT,which somehow fails to execute,so it calls __debugbreak(); to trigger a break point?(excuse my ignorance here).But that doesn't really tell me why xnamath isn't working in my code.My CPU has xna math support for sure,since I can compile and run Frank Luna's XMMATRIX code without a problem and yet the same things he does crash when I try them in my code.The d3dx10math and the rest of the framework worked perfectly before I tried using xnamath.Here is Frank Luna's tutorial code:
XMMATRIX:
#include <windows.h> // for FLOAT definition
#include <xnamath.h>
#include <iostream>
using namespace std;
// Overload the "<<" operators so that we can use cout to
// output XMVECTOR and XMMATRIX objects.
ostream& operator<<(ostream& os, FXMVECTOR v)
{
XMFLOAT4 dest;
XMStoreFloat4(&dest, v);
os << "(" << dest.x << ", " << dest.y << ", " << dest.z << ", " << dest.w << ")";
return os;
}
ostream& operator<<(ostream& os, CXMMATRIX m)
{
for(int i = 0; i < 4; ++i)
{
for(int j = 0; j < 4; ++j)
os << m(i, j) << "\t";
os << endl;
}
return os;
}
int main()
{
// Check support for SSE2 (Pentium4, AMD K8, and above).
if( !XMVerifyCPUSupport() )
{
cout << "xna math not supported" << endl;
return 0;
}
XMMATRIX A(1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 2.0f, 0.0f, 0.0f,
0.0f, 0.0f, 4.0f, 0.0f,
1.0f, 2.0f, 3.0f, 1.0f);
XMMATRIX B = XMMatrixIdentity();
XMMATRIX C = A * B;
XMMATRIX D = XMMatrixTranspose(A);
XMVECTOR det = XMMatrixDeterminant(A);
XMMATRIX E = XMMatrixInverse(&det, A);
XMMATRIX F = A * E;
cout << "A = " << endl << A << endl;
cout << "B = " << endl << B << endl;
cout << "C = A*B = " << endl << C << endl;
cout << "D = transpose(A) = " << endl << D << endl;
cout << "det = determinant(A) = " << det << endl << endl;
cout << "E = inverse(A) = " << endl << E << endl;
cout << "F = A*E = " << endl << F << endl;
system("pause");
return 0;
}
XMVECTOR:
#include <windows.h> // for FLOAT definition
#include <xnamath.h>
#include <iostream>
using namespace std;
// Overload the "<<" operators so that we can use cout to
// output XMVECTOR objects.
ostream& operator<<(ostream& os, FXMVECTOR v)
{
XMFLOAT4 dest;
XMStoreFloat4(&dest, v);
os << "(" << dest.x << ", " << dest.y << ", " << dest.z << ", " << dest.w << ")";
return os;
}
int main()
{
cout.setf(ios_base::boolalpha);
// Check support for SSE2 (Pentium4, AMD K8, and above).
if( !XMVerifyCPUSupport() )
{
cout << "xna math not supported" << endl;
return 0;
}
XMVECTOR p = XMVectorSet(2.0f, 2.0f, 1.0f, 0.0f);
XMVECTOR q = XMVectorSet(2.0f, -0.5f, 0.5f, 0.1f);
XMVECTOR u = XMVectorSet(1.0f, 2.0f, 4.0f, 8.0f);
XMVECTOR v = XMVectorSet(-2.0f, 1.0f, -3.0f, 2.5f);
XMVECTOR w = XMVectorSet(0.0f, XM_PIDIV4, XM_PIDIV2, XM_PI);
cout << "XMVectorAbs(v) = " << XMVectorAbs(v) << endl;
cout << "XMVectorCos(w) = " << XMVectorCos(w) << endl;
cout << "XMVectorLog(u) = " << XMVectorLog(u) << endl;
cout << "XMVectorExp(p) = " << XMVectorExp(p) << endl;
cout << "XMVectorPow(u, p) = " << XMVectorPow(u, p) << endl;
cout << "XMVectorSqrt(u) = " << XMVectorSqrt(u) << endl;
cout << "XMVectorSwizzle(u, 2, 2, 1, 3) = "
<< XMVectorSwizzle(u, 2, 2, 1, 3) << endl;
cout << "XMVectorSwizzle(u, 2, 1, 0, 3) = "
<< XMVectorSwizzle(u, 2, 1, 0, 3) << endl;
cout << "XMVectorMultiply(u, v) = " << XMVectorMultiply(u, v) << endl;
cout << "XMVectorSaturate(q) = " << XMVectorSaturate(q) << endl;
cout << "XMVectorMin(p, v = " << XMVectorMin(p, v) << endl;
cout << "XMVectorMax(p, v) = " << XMVectorMax(p, v) << endl;
system("pause");
return 0;
}
And one last thing just to make sure I got this straight - for shaders when you want to pass say..a constant buffer with a matrix in it,you use XMFLOAT4X4 and not XMMATRIX,right?
