XMBYTE4 Structure

A 4D vector where each component is a signed integer, 8-bits (1 byte) in length.

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 XMBYTE4

Remarks

The fields in the XMBYTE4 structure are declared as follows:

struct XMBYTE4
{
    union
    {
        struct
        {
            int8_t x; // Signed 8-bit integer value in the range [-127, 127] 
                      // describing the x-coordinate of the vector. 
            int8_t y; // Signed 8-bit integer value in the range [-127, 127] 
                      // describing the y-coordinate of the vector. 
            int8_t z; // Signed 8-bit integer value in the range [-127, 127] 
                      // describing the z-coordinate of the vector. 
            int8_t w; // Signed 8-bit integer value in the range [-127, 127] 
                      // describing the w-coordinate of the vector. 
        };
        uint32_t v; // Unsigned 32-bit integer representing the 4D vector. 
    };

XMBYTE4 can be loaded into instances of XMVECTOR by using XMLoadByte4.

Instances of XMVECTOR can be stored into an instance of XMBYTE4 with XMStoreByte4.

Namespace: Use DirectX::PackedVector

Requirements

Header: Declared in directxpackedvector.h.