XMDEC4 Structure

A 4D vector with x-, y-, and z-components represented as 10 bit signed integer values, and the w-component as a 2 bit signed integer value.

If you are programming in C++, you can use the constructors and operator methods of this structure.

Note See DirectXMath Library Type Equivalences for information about equivalent D3DDECLTYPE, D3DFORMAT, and DXGI_FORMAT objects.

Syntax

struct XMDEC4

Remarks

The fields in the XMDEC4 structure are declared as follows:

struct XMDEC4
{
    union
    {
        struct
        {
            int32_t  x  : 10; // Signed integer value in the range [-511, 511] 
                              // describing the x-coordinate of the vector.
            int32_t  y  : 10; // Signed integer value in the range [-511, 511] 
                              // describing the y-coordinate of the vector.
            int32_t  z  : 10; // Signed integer value in the range [-511, 511] 
                              // describing the z-coordinate of the vector.
            int32_t  w  : 2;  // Signed integer value in the range [-1, 1] 
                              // describing the w-coordinate of the vector.
        };
        uint32_t v; // Unsigned 32-bit integer representing the 4D vector.
    };

XMDEC4 can be loaded into instances of XMVECTOR by using XMLoadDec4.

Instances of XMVECTOR can be stored into an instance of XMDEC4 with XMStoreDec4.

Namespace: Use DirectX::PackedVector

Requirements

Header: Declared in directxpackedvector.h.