This extension provides a set of function to convert vertors to packed formats. More...
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Detailed Description
This extension provides a set of function to convert vertors to packed formats.
<glm/gtc/packing.hpp> need to be included to use these features.
Function Documentation
◆ packF2x11_1x10()
| GLM_FUNC_DECL uint32 glm::packF2x11_1x10 | ( | vec3 const & | v | ) |
First, converts the first two components of the normalized floating-point value v into 11-bit signless floating-point values. Then, converts the third component of the normalized floating-point value v into a 10-bit signless floating-point value. Then, the results are packed into the returned 32-bit unsigned integer.
The first vector component specifies the 11 least-significant bits of the result; the last component specifies the 10 most-significant bits.
- See also
- GLM_GTC_packing
- vec3 unpackF2x11_1x10(uint32 const & p)
◆ packHalf1x16()
| GLM_FUNC_DECL uint16 glm::packHalf1x16 | ( | float | v | ) |
Returns an unsigned integer obtained by converting the components of a floating-point scalar to the 16-bit floating-point representation found in the OpenGL Specification, and then packing this 16-bit value into a 16-bit unsigned integer.
◆ packHalf4x16()
| GLM_FUNC_DECL uint64 glm::packHalf4x16 | ( | vec4 const & | v | ) |
Returns an unsigned integer obtained by converting the components of a four-component floating-point vector to the 16-bit floating-point representation found in the OpenGL Specification, and then packing these four 16-bit values into a 64-bit unsigned integer. The first vector component specifies the 16 least-significant bits of the result; the forth component specifies the 16 most-significant bits.
- See also
- GLM_GTC_packing
- uint16 packHalf1x16(float const & v)
- uint32 packHalf2x16(vec2 const & v)
- GLSL packHalf2x16 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ packI3x10_1x2()
| GLM_FUNC_DECL uint32 glm::packI3x10_1x2 | ( | ivec4 const & | v | ) |
Returns an unsigned integer obtained by converting the components of a four-component signed integer vector to the 10-10-10-2-bit signed integer representation found in the OpenGL Specification, and then packing these four values into a 32-bit unsigned integer. The first vector component specifies the 10 least-significant bits of the result; the forth component specifies the 2 most-significant bits.
- See also
- GLM_GTC_packing
- uint32 packI3x10_1x2(uvec4 const & v)
- uint32 packSnorm3x10_1x2(vec4 const & v)
- uint32 packUnorm3x10_1x2(vec4 const & v)
- ivec4 unpackI3x10_1x2(uint32 const & p)
◆ packSnorm1x16()
| GLM_FUNC_DECL uint16 glm::packSnorm1x16 | ( | float | v | ) |
First, converts the normalized floating-point value v into 16-bit integer value. Then, the results are packed into the returned 16-bit unsigned integer.
The conversion to fixed point is done as follows: packSnorm1x8: round(clamp(s, -1, +1) * 32767.0)
◆ packSnorm1x8()
| GLM_FUNC_DECL uint8 glm::packSnorm1x8 | ( | float | s | ) |
First, converts the normalized floating-point value v into 8-bit integer value. Then, the results are packed into the returned 8-bit unsigned integer.
The conversion to fixed point is done as follows: packSnorm1x8: round(clamp(s, -1, +1) * 127.0)
◆ packSnorm2x8()
| GLM_FUNC_DECL uint16 glm::packSnorm2x8 | ( | vec2 const & | v | ) |
First, converts each component of the normalized floating-point value v into 8-bit integer values. Then, the results are packed into the returned 16-bit unsigned integer.
The conversion for component c of v to fixed point is done as follows: packSnorm2x8: 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
- GLM_GTC_packing
- uint8 packSnorm1x8(float const & v)
- uint32 packSnorm4x8(vec4 const & v)
- GLSL packSnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ packSnorm3x10_1x2()
| GLM_FUNC_DECL uint32 glm::packSnorm3x10_1x2 | ( | vec4 const & | v | ) |
First, converts the first three components of the normalized floating-point value v into 10-bit signed integer values. Then, converts the forth component of the normalized floating-point value v into 2-bit signed 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: packSnorm3x10_1x2(xyz): round(clamp(c, -1, +1) * 511.0) packSnorm3x10_1x2(w): round(clamp(c, -1, +1) * 1.0)
The first vector component specifies the 10 least-significant bits of the result; the forth component specifies the 2 most-significant bits.
- See also
- GLM_GTC_packing
- vec4 unpackSnorm3x10_1x2(uint32 const & p)
- uint32 packUnorm3x10_1x2(vec4 const & v)
- uint32 packU3x10_1x2(uvec4 const & v)
- uint32 packI3x10_1x2(ivec4 const & v)
◆ packSnorm4x16()
| GLM_FUNC_DECL uint64 glm::packSnorm4x16 | ( | vec4 const & | v | ) |
First, converts each component of the normalized floating-point value v into 16-bit integer values. Then, the results are packed into the returned 64-bit unsigned integer.
The conversion for component c of v to fixed point is done as follows: packSnorm2x8: round(clamp(c, -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
- GLM_GTC_packing
- uint16 packSnorm1x16(float const & v)
- uint32 packSnorm2x16(vec2 const & v)
- GLSL packSnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ packU3x10_1x2()
| GLM_FUNC_DECL uint32 glm::packU3x10_1x2 | ( | uvec4 const & | v | ) |
Returns an unsigned integer obtained by converting the components of a four-component unsigned integer vector to the 10-10-10-2-bit unsigned integer representation found in the OpenGL Specification, and then packing these four values into a 32-bit unsigned integer. The first vector component specifies the 10 least-significant bits of the result; the forth component specifies the 2 most-significant bits.
- See also
- GLM_GTC_packing
- uint32 packI3x10_1x2(ivec4 const & v)
- uint32 packSnorm3x10_1x2(vec4 const & v)
- uint32 packUnorm3x10_1x2(vec4 const & v)
- ivec4 unpackU3x10_1x2(uint32 const & p)
◆ packUnorm1x16()
| GLM_FUNC_DECL uint16 glm::packUnorm1x16 | ( | float | v | ) |
First, converts the normalized floating-point value v into a 16-bit integer value. Then, the results are packed into the returned 16-bit unsigned integer.
The conversion for component c of v to fixed point is done as follows: packUnorm1x16: round(clamp(c, 0, +1) * 65535.0)
- See also
- GLM_GTC_packing
- uint16 packSnorm1x16(float const & v)
- uint64 packSnorm4x16(vec4 const & v)
- GLSL packUnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ packUnorm1x8()
| GLM_FUNC_DECL uint8 glm::packUnorm1x8 | ( | float | v | ) |
First, converts the normalized floating-point value v into a 8-bit integer value. Then, the results are packed into the returned 8-bit unsigned integer.
The conversion for component c of v to fixed point is done as follows: packUnorm1x8: round(clamp(c, 0, +1) * 255.0)
◆ packUnorm2x8()
| GLM_FUNC_DECL uint16 glm::packUnorm2x8 | ( | vec2 const & | v | ) |
First, converts each component of the normalized floating-point value v into 8-bit integer values. Then, the results are packed into the returned 16-bit unsigned integer.
The conversion for component c of v to fixed point is done as follows: packUnorm2x8: round(clamp(c, 0, +1) * 255.0)
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
- GLM_GTC_packing
- uint8 packUnorm1x8(float const & v)
- uint32 packUnorm4x8(vec4 const & v)
- GLSL packUnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ packUnorm3x10_1x2()
| GLM_FUNC_DECL uint32 glm::packUnorm3x10_1x2 | ( | vec4 const & | v | ) |
First, converts the first three components of the normalized floating-point value v into 10-bit unsigned integer values. Then, converts the forth component of the normalized floating-point value v into 2-bit signed uninteger 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: packUnorm3x10_1x2(xyz): round(clamp(c, 0, +1) * 1023.0) packUnorm3x10_1x2(w): round(clamp(c, 0, +1) * 3.0)
The first vector component specifies the 10 least-significant bits of the result; the forth component specifies the 2 most-significant bits.
- See also
- GLM_GTC_packing
- vec4 unpackUnorm3x10_1x2(uint32 const & p)
- uint32 packUnorm3x10_1x2(vec4 const & v)
- uint32 packU3x10_1x2(uvec4 const & v)
- uint32 packI3x10_1x2(ivec4 const & v)
◆ packUnorm4x16()
| GLM_FUNC_DECL uint64 glm::packUnorm4x16 | ( | vec4 const & | v | ) |
First, converts each component of the normalized floating-point value v into 16-bit integer values. Then, the results are packed into the returned 64-bit unsigned integer.
The conversion for component c of v to fixed point is done as follows: packUnorm4x16: 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
- GLM_GTC_packing
- uint16 packUnorm1x16(float const & v)
- uint32 packUnorm2x16(vec2 const & v)
- GLSL packUnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackF2x11_1x10()
| GLM_FUNC_DECL vec3 glm::unpackF2x11_1x10 | ( | uint32 | p | ) |
First, unpacks a single 32-bit unsigned integer p into two 11-bit signless floating-point values and one 10-bit signless floating-point value . Then, each component is converted to a normalized floating-point value to generate the returned three-component vector.
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.
◆ unpackHalf1x16()
| GLM_FUNC_DECL float glm::unpackHalf1x16 | ( | uint16 | v | ) |
Returns a floating-point scalar with components obtained by unpacking a 16-bit unsigned integer into a 16-bit value, interpreted as a 16-bit floating-point number according to the OpenGL Specification, and converting it to 32-bit floating-point values.
- See also
- GLM_GTC_packing
- vec2 unpackHalf2x16(uint32 const & v)
- vec4 unpackHalf4x16(uint64 const & v)
- GLSL unpackHalf2x16 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackHalf4x16()
| GLM_FUNC_DECL vec4 glm::unpackHalf4x16 | ( | uint64 | p | ) |
Returns a four-component floating-point vector with components obtained by unpacking a 64-bit unsigned integer into four 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 forth component is obtained from the 16 most-significant bits of v.
- See also
- GLM_GTC_packing
- float unpackHalf1x16(uint16 const & v)
- vec2 unpackHalf2x16(uint32 const & v)
- GLSL unpackHalf2x16 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackI3x10_1x2()
| GLM_FUNC_DECL ivec4 glm::unpackI3x10_1x2 | ( | uint32 | p | ) |
Unpacks a single 32-bit unsigned integer p into three 10-bit and one 2-bit signed integers.
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
- GLM_GTC_packing
- uint32 packU3x10_1x2(uvec4 const & v)
- vec4 unpackSnorm3x10_1x2(uint32 const & p);
- uvec4 unpackI3x10_1x2(uint32 const & p);
◆ unpackSnorm1x16()
| GLM_FUNC_DECL float glm::unpackSnorm1x16 | ( | uint16 | p | ) |
First, unpacks a single 16-bit unsigned integer p into a single 16-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned scalar.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm1x16: clamp(f / 32767.0, -1, +1)
- See also
- GLM_GTC_packing
- vec2 unpackSnorm2x16(uint32 p)
- vec4 unpackSnorm4x16(uint64 p)
- GLSL unpackSnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackSnorm1x8()
| GLM_FUNC_DECL float glm::unpackSnorm1x8 | ( | uint8 | p | ) |
First, unpacks a single 8-bit unsigned integer p into a single 8-bit signed integers. Then, the value is converted to a normalized floating-point value to generate the returned scalar.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm1x8: clamp(f / 127.0, -1, +1)
◆ unpackSnorm2x8()
| GLM_FUNC_DECL vec2 glm::unpackSnorm2x8 | ( | uint16 | p | ) |
First, unpacks a single 16-bit unsigned integer p into a pair of 8-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned two-component vector.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm2x8: 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
- GLM_GTC_packing
- float unpackSnorm1x8(uint8 p)
- vec4 unpackSnorm4x8(uint32 p)
- GLSL unpackSnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackSnorm3x10_1x2()
| GLM_FUNC_DECL vec4 glm::unpackSnorm3x10_1x2 | ( | uint32 | p | ) |
First, unpacks a single 32-bit unsigned integer p into four 16-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned four-component vector.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm3x10_1x2(xyz): clamp(f / 511.0, -1, +1) unpackSnorm3x10_1x2(w): clamp(f / 511.0, -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
- GLM_GTC_packing
- uint32 packSnorm3x10_1x2(vec4 const & v)
- vec4 unpackUnorm3x10_1x2(uint32 const & p))
- uvec4 unpackI3x10_1x2(uint32 const & p)
- uvec4 unpackU3x10_1x2(uint32 const & p)
◆ unpackSnorm4x16()
| GLM_FUNC_DECL vec4 glm::unpackSnorm4x16 | ( | uint64 const & | p | ) |
First, unpacks a single 64-bit unsigned integer p into four 16-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned four-component vector.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm4x16: 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
- GLM_GTC_packing
- float unpackSnorm1x16(uint16 p)
- vec2 unpackSnorm2x16(uint32 p)
- GLSL unpackSnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackU3x10_1x2()
| GLM_FUNC_DECL uvec4 glm::unpackU3x10_1x2 | ( | uint32 | p | ) |
Unpacks a single 32-bit unsigned integer p into three 10-bit and one 2-bit unsigned integers.
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
- GLM_GTC_packing
- uint32 packU3x10_1x2(uvec4 const & v)
- vec4 unpackSnorm3x10_1x2(uint32 const & p);
- uvec4 unpackI3x10_1x2(uint32 const & p);
◆ unpackUnorm1x16()
| GLM_FUNC_DECL float glm::unpackUnorm1x16 | ( | uint16 | p | ) |
First, unpacks a single 16-bit unsigned integer p into a of 16-bit unsigned integers. Then, the value is converted to a normalized floating-point value to generate the returned scalar.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnorm1x16: f / 65535.0
- See also
- GLM_GTC_packing
- vec2 unpackUnorm2x16(uint32 p)
- vec4 unpackUnorm4x16(uint64 p)
- GLSL unpackUnorm2x16 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackUnorm1x8()
| GLM_FUNC_DECL float glm::unpackUnorm1x8 | ( | uint8 | p | ) |
Convert a single 8-bit integer to a normalized floating-point value.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnorm4x8: f / 255.0
◆ unpackUnorm2x8()
| GLM_FUNC_DECL vec2 glm::unpackUnorm2x8 | ( | uint16 | p | ) |
First, unpacks a single 16-bit unsigned integer p into a pair of 8-bit unsigned integers. Then, each component is converted to a normalized floating-point value to generate the returned two-component vector.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnorm4x8: f / 255.0
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
- GLM_GTC_packing
- float unpackUnorm1x8(uint8 v)
- vec4 unpackUnorm4x8(uint32 p)
- GLSL unpackUnorm4x8 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions
◆ unpackUnorm3x10_1x2()
| GLM_FUNC_DECL vec4 glm::unpackUnorm3x10_1x2 | ( | uint32 | p | ) |
First, unpacks a single 32-bit unsigned integer p into four 16-bit signed integers. Then, each component is converted to a normalized floating-point value to generate the returned four-component vector.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm3x10_1x2(xyz): clamp(f / 1023.0, 0, +1) unpackSnorm3x10_1x2(w): clamp(f / 3.0, 0, +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
- GLM_GTC_packing
- uint32 packSnorm3x10_1x2(vec4 const & v)
- vec4 unpackInorm3x10_1x2(uint32 const & p))
- uvec4 unpackI3x10_1x2(uint32 const & p)
- uvec4 unpackU3x10_1x2(uint32 const & p)
◆ unpackUnorm4x16()
| GLM_FUNC_DECL vec4 glm::unpackUnorm4x16 | ( | uint64 | p | ) |
First, unpacks a single 64-bit unsigned integer p into four 16-bit unsigned integers. Then, each component is converted to a normalized floating-point value to generate the returned four-component vector.
The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnormx4x16: 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
- GLM_GTC_packing
- float unpackUnorm1x16(uint16 p)
- vec2 unpackUnorm2x16(uint32 p)
- GLSL unpackUnorm2x16 man page
- GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions