Name

packUnorm2x16, packSnorm2x16 — pack floating-point values into an unsigned integer

Declaration

uint packUnorm2x16(vec2 v);
 
uint packSnorm2x16(vec2 v);
 

Parameters

v

Specifies a vector of values to be packed into an unsigned integer.

Description

packUnorm2x16 and packSnorm2x16 converts each component of the normalized floating-point value v into 16-bit integer values and then packs the results into a 32-bit unsigned intgeter.

The conversion for component c of v to fixed-point is performed as follows:

  • packUnorm2x16: round(clamp(c, 0.0, 1.0) * 65535.0)

  • packSnorm2x16: round(clamp(c, -1.0, 1.0) * 32767.0)

The first component of the vector will be written to the least significant bits of the output; the last component will be written to the most significant bits.

Version Support

OpenGL ES Shading Language Version
Function Name 1.00 3.00
packUnorm2x16-✔
packSnorm2x16-✔

See Also

clamp, round, unpackUnorm2x16, unpackSnorm2x16,

Copyright

Copyright © 2011-2013 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999.