D3D9 Matrices + HLSL

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Hello,

I'm seeking help from all of you expert with Direct3D. Frankly I'm getting nuts by a really weird behavior from HLSL. It's the way I specify matrices.

Now my question D3DX 9 functions:

D3DXMatrixOrthoOffCenterRH and others...

Do they return a matrix that's used in this form: v' = v * M // Column major

or v' = M * v // Row major ???

I noticed the D3DXMatrixTrnaslate is in Column major and I assume the same for all functions.

Now does D3DX Project and Unproject functions takes in the same form returned by the above functions?

Have anyone experienced a really craziness from HLSL matrix multiplication?

Thanks.

The matrices in the graphics hardware is a transpose to the matrices in DirectX math. Whenever you give a matrix to a constant buffer, use the transpose of the matrix.