global functions

# glm::packDouble2x32(...)

## double glm::packDouble2x32(const glm::uvec2 &v)

*Documentation from code comments*

*Documentation from code comments*

Returns a double-precision value obtained by packing the components of v into a 64-bit value. If an IEEE 754 Inf or NaN is created, it will not signal, and the resulting floating point value is unspecified. Otherwise, the bit- level representation of v is preserved. The first vector component specifies the 32 least significant bits; the second component specifies the 32 most significant bits.

**See also**: GLSL packDouble2x32 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::packHalf2x16(...)

## glm::uint glm::packHalf2x16(const glm::vec2 &v)

*Documentation from code comments*

*Documentation from code comments*

Returns an unsigned integer obtained by converting the components of a two-component floating-point vector to the 16-bit floating-point representation found in the OpenGL Specification, and then packing these two 16- bit integers into a 32-bit unsigned integer. The first vector component specifies the 16 least-significant bits of the result; the second component specifies the 16 most-significant bits.

**See also**: GLSL packHalf2x16 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::packSnorm2x16(...)

## glm::uint glm::packSnorm2x16(const glm::vec2 &v)

*Documentation from code comments*

*Documentation from code comments*

First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values. Then, the results are packed into the returned 32-bit unsigned integer.

The conversion for component c of v to fixed point is done as follows: packSnorm2x16: round(clamp(v, -1, +1) * 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.

**See also**: GLSL packSnorm2x16 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::packSnorm4x8(...)

## glm::uint glm::packSnorm4x8(const glm::vec4 &v)

*Documentation from code comments*

*Documentation from code comments*

First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values. Then, the results are packed into the returned 32-bit unsigned integer.

The conversion for component c of v to fixed point is done as follows: packSnorm4x8: round(clamp(c, -1, +1) * 127.0)

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.

**See also**: GLSL packSnorm4x8 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::packUnorm2x16(...)

## glm::uint glm::packUnorm2x16(const glm::vec2 &v)

*Documentation from code comments*

*Documentation from code comments*

First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values. Then, the results are packed into the returned 32-bit unsigned integer.

The conversion for component c of v to fixed point is done as follows: packUnorm2x16: round(clamp(c, 0, +1) * 65535.0)

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.

**See also**: GLSL packUnorm2x16 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::packUnorm4x8(...)

## glm::uint glm::packUnorm4x8(const glm::vec4 &v)

*Documentation from code comments*

*Documentation from code comments*

The conversion for component c of v to fixed point is done as follows: packUnorm4x8: round(clamp(c, 0, +1) * 255.0)

**See also**: GLSL packUnorm4x8 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::unpackDouble2x32(...)

## glm::uvec2 glm::unpackDouble2x32(double v)

*Documentation from code comments*

*Documentation from code comments*

Returns a two-component unsigned integer vector representation of v. The bit-level representation of v is preserved. The first component of the vector contains the 32 least significant bits of the double; the second component consists the 32 most significant bits.

**See also**: GLSL unpackDouble2x32 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::unpackHalf2x16(...)

## glm::vec2 glm::unpackHalf2x16(glm::uint v)

*Documentation from code comments*

*Documentation from code comments*

Returns a two-component floating-point vector with components obtained by unpacking a 32-bit unsigned integer into a pair of 16-bit values, interpreting those values as 16-bit floating-point numbers according to the OpenGL Specification, and converting them to 32-bit floating-point values. The first component of the vector is obtained from the 16 least-significant bits of v; the second component is obtained from the 16 most-significant bits of v.

**See also**: GLSL unpackHalf2x16 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::unpackSnorm2x16(...)

## glm::vec2 glm::unpackSnorm2x16(glm::uint p)

*Documentation from code comments*

*Documentation from code comments*

First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.

The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm2x16: clamp(f / 32767.0, -1, +1)

The first component of the returned vector will be extracted from the least significant bits of the input; the last component will be extracted from the most significant bits.

**See also**: GLSL unpackSnorm2x16 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::unpackSnorm4x8(...)

## glm::vec4 glm::unpackSnorm4x8(glm::uint p)

*Documentation from code comments*

*Documentation from code comments*

First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.

The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm4x8: clamp(f / 127.0, -1, +1)

The first component of the returned vector will be extracted from the least significant bits of the input; the last component will be extracted from the most significant bits.

**See also**: GLSL unpackSnorm4x8 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::unpackUnorm2x16(...)

## glm::vec2 glm::unpackUnorm2x16(glm::uint p)

*Documentation from code comments*

*Documentation from code comments*

First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.

The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnorm2x16: f / 65535.0

The first component of the returned vector will be extracted from the least significant bits of the input; the last component will be extracted from the most significant bits.

**See also**: GLSL unpackUnorm2x16 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

# glm::unpackUnorm4x8(...)

## glm::vec4 glm::unpackUnorm4x8(glm::uint p)

*Documentation from code comments*

*Documentation from code comments*

The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnorm4x8: f / 255.0

**See also**: GLSL unpackUnorm4x8 man page

**See also**: GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions

Last updated 水曜日, 14 11月 2018 15:56:13 UTC - be8c4934c81e8cd12ed81e3b5fe2fdc77f01da0a

Hosting for openFrameworks is generously provided by Rackspace

If you have any doubt about the usage of this module you can ask in the forum.

If you want to contribute better documentation or start documenting this section you can do so here

If you find anything wrong with this docs you can report any error by opening an issue