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XMFLOAT3PK::XMFLOAT3PK(uint32_t) function (directxpackedvector.h)

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Initializes a new instance of XMFLOAT3PK from a uint32_t variable containing component data in a packed format.

This constructor initializes a new instance of XMFLOAT3PK from a uint32_t variable containing component data in a packed format.

Note  This constructor is only available under C++.
 

Syntax

void XMFLOAT3PK(
  uint32_t Packed
) noexcept;

Parameters

Packed

The values of three vector components in a packed format.

Return value

None

Remarks

The values of the three components of the new instance of XMFLOAT3PK are stored in the argument Packed with the z component (as a reduced precision floating point number) in the most significant bits, and the x component is stored in the least significant bits:


  (Z10Y11X11): [32] ZZZZZzzz zzYYYYYy yyyyXXX XXxxxxxx [0]

Or in detail:

  • Bits 0-5 of v are the 6 bit mantissa of the x component's floating point value: the xm member of new instance of the structure.
  • Bits 6-10 of v are the 5 bit exponent of the x component's floating point value the xe member of new instance of the structure.
  • Bits 11-16 of v are the 6-bit mantissa of the y component's floating point value: the ym member of new instance of the structure.
  • Bits 17-21 of v are the 5 bit exponent of the y component's floating point value: the ye member of new instance of the structure.
  • Bits 22-26 of v are the 5 bit mantissa of the z component's floating point value: the zm member of new instance of the structure.
  • Bits 27-31 of v are the 5 bit exponent of the z component's floating point value: the ze member of new instance of the structure.

Requirements

Requirement Value
Target Platform Windows
Header directxpackedvector.h

See also

Reference

XMFLOAT3PK

XMFLOAT3PK Constructors