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  42. <a href="#func-members">Functions</a>  </div>
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  44. <div class="title">Floating-Point Pack and Unpack Functions<div class="ingroups"><a class="el" href="a00167.html">GLM Core</a></div></div>  </div>
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  48. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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  49. Functions</h2></td></tr>
    50. 

  50. <tr class="memitem:gaa916ca426b2bb0343ba17e3753e245c2"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#gaa916ca426b2bb0343ba17e3753e245c2">packDouble2x32</a> (uvec2 const &amp;v)</td></tr>
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  52. <tr class="memitem:ga20f134b07db3a3d3a38efb2617388c92"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL uint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga20f134b07db3a3d3a38efb2617388c92">packHalf2x16</a> (vec2 const &amp;v)</td></tr>
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  54. <tr class="memitem:ga977ab172da5494e5ac63e952afacfbe2"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL uint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga977ab172da5494e5ac63e952afacfbe2">packSnorm2x16</a> (vec2 const &amp;v)</td></tr>
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  55. <tr class="separator:ga977ab172da5494e5ac63e952afacfbe2"><td class="memSeparator" colspan="2">&#160;</td></tr>
    56. 

  56. <tr class="memitem:ga85e8f17627516445026ab7a9c2e3531a"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL uint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga85e8f17627516445026ab7a9c2e3531a">packSnorm4x8</a> (vec4 const &amp;v)</td></tr>
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  57. <tr class="separator:ga85e8f17627516445026ab7a9c2e3531a"><td class="memSeparator" colspan="2">&#160;</td></tr>
    58. 

  58. <tr class="memitem:ga0e2d107039fe608a209497af867b85fb"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL uint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga0e2d107039fe608a209497af867b85fb">packUnorm2x16</a> (vec2 const &amp;v)</td></tr>
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  59. <tr class="separator:ga0e2d107039fe608a209497af867b85fb"><td class="memSeparator" colspan="2">&#160;</td></tr>
    60. 

  60. <tr class="memitem:gaf7d2f7341a9eeb4a436929d6f9ad08f2"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL uint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#gaf7d2f7341a9eeb4a436929d6f9ad08f2">packUnorm4x8</a> (vec4 const &amp;v)</td></tr>
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  61. <tr class="separator:gaf7d2f7341a9eeb4a436929d6f9ad08f2"><td class="memSeparator" colspan="2">&#160;</td></tr>
    62. 

  62. <tr class="memitem:gaafb099c61f00a002d975a5b67e1e8eb1"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL uvec2&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#gaafb099c61f00a002d975a5b67e1e8eb1">unpackDouble2x32</a> (double const &amp;v)</td></tr>
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  63. <tr class="separator:gaafb099c61f00a002d975a5b67e1e8eb1"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  64. <tr class="memitem:ga8d431ee6df169088a08f4464976925d9"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL vec2&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga8d431ee6df169088a08f4464976925d9">unpackHalf2x16</a> (uint const &amp;v)</td></tr>
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  65. <tr class="separator:ga8d431ee6df169088a08f4464976925d9"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  66. <tr class="memitem:ga77a35a82ffa538f921379c362bbeb017"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL vec2&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga77a35a82ffa538f921379c362bbeb017">unpackSnorm2x16</a> (uint const &amp;p)</td></tr>
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  68. <tr class="memitem:ga0ae75b1ab2ff410274fc0b7d8d5b6c7d"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL vec4&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga0ae75b1ab2ff410274fc0b7d8d5b6c7d">unpackSnorm4x8</a> (uint const &amp;p)</td></tr>
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    70. 

  70. <tr class="memitem:ga7203eea0c2c897acddee6936c9bd5343"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL vec2&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#ga7203eea0c2c897acddee6936c9bd5343">unpackUnorm2x16</a> (uint const &amp;p)</td></tr>
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  71. <tr class="separator:ga7203eea0c2c897acddee6936c9bd5343"><td class="memSeparator" colspan="2">&#160;</td></tr>
    72. 

  72. <tr class="memitem:gaa2dee2a1ff4707d710d90c17985d0b40"><td class="memItemLeft" align="right" valign="top">GLM_FUNC_DECL vec4&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00161.html#gaa2dee2a1ff4707d710d90c17985d0b40">unpackUnorm4x8</a> (uint const &amp;p)</td></tr>
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  73. <tr class="separator:gaa2dee2a1ff4707d710d90c17985d0b40"><td class="memSeparator" colspan="2">&#160;</td></tr>
    74. 

  74. </table>
    75. 

  75. <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
    76. 

  76. <p>These functions do not operate component-wise, rather as described in each case. </p>
    77. 

  77. <h2 class="groupheader">Function Documentation</h2>
    78. 

  78. <a class="anchor" id="gaa916ca426b2bb0343ba17e3753e245c2"></a>
    79. 

  79. <div class="memitem">
    80. 

  80. <div class="memproto">
    81. 

  81.       <table class="memname">
    82. 

  82.         <tr>
    83. 

  83.           <td class="memname">GLM_FUNC_DECL double glm::packDouble2x32 </td>
    84. 

  84.           <td>(</td>
    85. 

  85.           <td class="paramtype">uvec2 const &amp;&#160;</td>
    86. 

  86.           <td class="paramname"><em>v</em></td><td>)</td>
    87. 

  87.           <td></td>
    88. 

  88.         </tr>
    89. 

  89.       </table>
    90. 

  90. </div><div class="memdoc">
    91. 

  91. 

  92. <p>Returns a double-precision value obtained by packing the components of v into a 64-bit value. </p>
    93. 

  93. <p>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.</p>
    94. 

  94. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packDouble2x32.xml">GLSL packDouble2x32 man page</a> </dd>
    95. 

  95. <dd>
    96. 

  96. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    97. 

  97. 

  98. </div>
    99. 

  99. </div>
    100. 

  100. <a class="anchor" id="ga20f134b07db3a3d3a38efb2617388c92"></a>
    101. 

  101. <div class="memitem">
    102. 

  102. <div class="memproto">
    103. 

  103.       <table class="memname">
    104. 

  104.         <tr>
    105. 

  105.           <td class="memname">GLM_FUNC_DECL uint glm::packHalf2x16 </td>
    106. 

  106.           <td>(</td>
    107. 

  107.           <td class="paramtype">vec2 const &amp;&#160;</td>
    108. 

  108.           <td class="paramname"><em>v</em></td><td>)</td>
    109. 

  109.           <td></td>
    110. 

  110.         </tr>
    111. 

  111.       </table>
    112. 

  112. </div><div class="memdoc">
    113. 

  113. 

  114. <p>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. </p>
    115. 

  115. <p>The first vector component specifies the 16 least-significant bits of the result; the second component specifies the 16 most-significant bits.</p>
    116. 

  116. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packHalf2x16.xml">GLSL packHalf2x16 man page</a> </dd>
    117. 

  117. <dd>
    118. 

  118. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    119. 

  119. 

  120. </div>
    121. 

  121. </div>
    122. 

  122. <a class="anchor" id="ga977ab172da5494e5ac63e952afacfbe2"></a>
    123. 

  123. <div class="memitem">
    124. 

  124. <div class="memproto">
    125. 

  125.       <table class="memname">
    126. 

  126.         <tr>
    127. 

  127.           <td class="memname">GLM_FUNC_DECL uint glm::packSnorm2x16 </td>
    128. 

  128.           <td>(</td>
    129. 

  129.           <td class="paramtype">vec2 const &amp;&#160;</td>
    130. 

  130.           <td class="paramname"><em>v</em></td><td>)</td>
    131. 

  131.           <td></td>
    132. 

  132.         </tr>
    133. 

  133.       </table>
    134. 

  134. </div><div class="memdoc">
    135. 

  135. 

  136. <p>First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values. </p>
    137. 

  137. <p>Then, the results are packed into the returned 32-bit unsigned integer.</p>
    138. 

  138. <p>The conversion for component c of v to fixed point is done as follows: packSnorm2x16: round(clamp(v, -1, +1) * 32767.0)</p>
    139. 

  139. <p>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.</p>
    140. 

  140. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packSnorm2x16.xml">GLSL packSnorm2x16 man page</a> </dd>
    141. 

  141. <dd>
    142. 

  142. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    143. 

  143. 

  144. </div>
    145. 

  145. </div>
    146. 

  146. <a class="anchor" id="ga85e8f17627516445026ab7a9c2e3531a"></a>
    147. 

  147. <div class="memitem">
    148. 

  148. <div class="memproto">
    149. 

  149.       <table class="memname">
    150. 

  150.         <tr>
    151. 

  151.           <td class="memname">GLM_FUNC_DECL uint glm::packSnorm4x8 </td>
    152. 

  152.           <td>(</td>
    153. 

  153.           <td class="paramtype">vec4 const &amp;&#160;</td>
    154. 

  154.           <td class="paramname"><em>v</em></td><td>)</td>
    155. 

  155.           <td></td>
    156. 

  156.         </tr>
    157. 

  157.       </table>
    158. 

  158. </div><div class="memdoc">
    159. 

  159. 

  160. <p>First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values. </p>
    161. 

  161. <p>Then, the results are packed into the returned 32-bit unsigned integer.</p>
    162. 

  162. <p>The conversion for component c of v to fixed point is done as follows: packSnorm4x8: round(clamp(c, -1, +1) * 127.0)</p>
    163. 

  163. <p>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.</p>
    164. 

  164. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packSnorm4x8.xml">GLSL packSnorm4x8 man page</a> </dd>
    165. 

  165. <dd>
    166. 

  166. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    167. 

  167. 

  168. </div>
    169. 

  169. </div>
    170. 

  170. <a class="anchor" id="ga0e2d107039fe608a209497af867b85fb"></a>
    171. 

  171. <div class="memitem">
    172. 

  172. <div class="memproto">
    173. 

  173.       <table class="memname">
    174. 

  174.         <tr>
    175. 

  175.           <td class="memname">GLM_FUNC_DECL uint glm::packUnorm2x16 </td>
    176. 

  176.           <td>(</td>
    177. 

  177.           <td class="paramtype">vec2 const &amp;&#160;</td>
    178. 

  178.           <td class="paramname"><em>v</em></td><td>)</td>
    179. 

  179.           <td></td>
    180. 

  180.         </tr>
    181. 

  181.       </table>
    182. 

  182. </div><div class="memdoc">
    183. 

  183. 

  184. <p>First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values. </p>
    185. 

  185. <p>Then, the results are packed into the returned 32-bit unsigned integer.</p>
    186. 

  186. <p>The conversion for component c of v to fixed point is done as follows: packUnorm2x16: round(clamp(c, 0, +1) * 65535.0)</p>
    187. 

  187. <p>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.</p>
    188. 

  188. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packUnorm2x16.xml">GLSL packUnorm2x16 man page</a> </dd>
    189. 

  189. <dd>
    190. 

  190. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    191. 

  191. 

  192. </div>
    193. 

  193. </div>
    194. 

  194. <a class="anchor" id="gaf7d2f7341a9eeb4a436929d6f9ad08f2"></a>
    195. 

  195. <div class="memitem">
    196. 

  196. <div class="memproto">
    197. 

  197.       <table class="memname">
    198. 

  198.         <tr>
    199. 

  199.           <td class="memname">GLM_FUNC_DECL uint glm::packUnorm4x8 </td>
    200. 

  200.           <td>(</td>
    201. 

  201.           <td class="paramtype">vec4 const &amp;&#160;</td>
    202. 

  202.           <td class="paramname"><em>v</em></td><td>)</td>
    203. 

  203.           <td></td>
    204. 

  204.         </tr>
    205. 

  205.       </table>
    206. 

  206. </div><div class="memdoc">
    207. 

  207. 

  208. <p>First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values. </p>
    209. 

  209. <p>Then, the results are packed into the returned 32-bit unsigned integer.</p>
    210. 

  210. <p>The conversion for component c of v to fixed point is done as follows: packUnorm4x8: round(clamp(c, 0, +1) * 255.0)</p>
    211. 

  211. <p>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.</p>
    212. 

  212. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packUnorm4x8.xml">GLSL packUnorm4x8 man page</a> </dd>
    213. 

  213. <dd>
    214. 

  214. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    215. 

  215. 

  216. </div>
    217. 

  217. </div>
    218. 

  218. <a class="anchor" id="gaafb099c61f00a002d975a5b67e1e8eb1"></a>
    219. 

  219. <div class="memitem">
    220. 

  220. <div class="memproto">
    221. 

  221.       <table class="memname">
    222. 

  222.         <tr>
    223. 

  223.           <td class="memname">GLM_FUNC_DECL uvec2 glm::unpackDouble2x32 </td>
    224. 

  224.           <td>(</td>
    225. 

  225.           <td class="paramtype">double const &amp;&#160;</td>
    226. 

  226.           <td class="paramname"><em>v</em></td><td>)</td>
    227. 

  227.           <td></td>
    228. 

  228.         </tr>
    229. 

  229.       </table>
    230. 

  230. </div><div class="memdoc">
    231. 

  231. 

  232. <p>Returns a two-component unsigned integer vector representation of v. </p>
    233. 

  233. <p>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.</p>
    234. 

  234. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackDouble2x32.xml">GLSL unpackDouble2x32 man page</a> </dd>
    235. 

  235. <dd>
    236. 

  236. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    237. 

  237. 

  238. </div>
    239. 

  239. </div>
    240. 

  240. <a class="anchor" id="ga8d431ee6df169088a08f4464976925d9"></a>
    241. 

  241. <div class="memitem">
    242. 

  242. <div class="memproto">
    243. 

  243.       <table class="memname">
    244. 

  244.         <tr>
    245. 

  245.           <td class="memname">GLM_FUNC_DECL vec2 glm::unpackHalf2x16 </td>
    246. 

  246.           <td>(</td>
    247. 

  247.           <td class="paramtype">uint const &amp;&#160;</td>
    248. 

  248.           <td class="paramname"><em>v</em></td><td>)</td>
    249. 

  249.           <td></td>
    250. 

  250.         </tr>
    251. 

  251.       </table>
    252. 

  252. </div><div class="memdoc">
    253. 

  253. 

  254. <p>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. </p>
    255. 

  255. <p>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.</p>
    256. 

  256. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackHalf2x16.xml">GLSL unpackHalf2x16 man page</a> </dd>
    257. 

  257. <dd>
    258. 

  258. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    259. 

  259. 

  260. </div>
    261. 

  261. </div>
    262. 

  262. <a class="anchor" id="ga77a35a82ffa538f921379c362bbeb017"></a>
    263. 

  263. <div class="memitem">
    264. 

  264. <div class="memproto">
    265. 

  265.       <table class="memname">
    266. 

  266.         <tr>
    267. 

  267.           <td class="memname">GLM_FUNC_DECL vec2 glm::unpackSnorm2x16 </td>
    268. 

  268.           <td>(</td>
    269. 

  269.           <td class="paramtype">uint const &amp;&#160;</td>
    270. 

  270.           <td class="paramname"><em>p</em></td><td>)</td>
    271. 

  271.           <td></td>
    272. 

  272.         </tr>
    273. 

  273.       </table>
    274. 

  274. </div><div class="memdoc">
    275. 

  275. 

  276. <p>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. </p>
    277. 

  277. <p>Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.</p>
    278. 

  278. <p>The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm2x16: clamp(f / 32767.0, -1, +1)</p>
    279. 

  279. <p>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.</p>
    280. 

  280. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackSnorm2x16.xml">GLSL unpackSnorm2x16 man page</a> </dd>
    281. 

  281. <dd>
    282. 

  282. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    283. 

  283. 

  284. </div>
    285. 

  285. </div>
    286. 

  286. <a class="anchor" id="ga0ae75b1ab2ff410274fc0b7d8d5b6c7d"></a>
    287. 

  287. <div class="memitem">
    288. 

  288. <div class="memproto">
    289. 

  289.       <table class="memname">
    290. 

  290.         <tr>
    291. 

  291.           <td class="memname">GLM_FUNC_DECL vec4 glm::unpackSnorm4x8 </td>
    292. 

  292.           <td>(</td>
    293. 

  293.           <td class="paramtype">uint const &amp;&#160;</td>
    294. 

  294.           <td class="paramname"><em>p</em></td><td>)</td>
    295. 

  295.           <td></td>
    296. 

  296.         </tr>
    297. 

  297.       </table>
    298. 

  298. </div><div class="memdoc">
    299. 

  299. 

  300. <p>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. </p>
    301. 

  301. <p>Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.</p>
    302. 

  302. <p>The conversion for unpacked fixed-point value f to floating point is done as follows: unpackSnorm4x8: clamp(f / 127.0, -1, +1)</p>
    303. 

  303. <p>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.</p>
    304. 

  304. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackSnorm4x8.xml">GLSL unpackSnorm4x8 man page</a> </dd>
    305. 

  305. <dd>
    306. 

  306. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    307. 

  307. 

  308. </div>
    309. 

  309. </div>
    310. 

  310. <a class="anchor" id="ga7203eea0c2c897acddee6936c9bd5343"></a>
    311. 

  311. <div class="memitem">
    312. 

  312. <div class="memproto">
    313. 

  313.       <table class="memname">
    314. 

  314.         <tr>
    315. 

  315.           <td class="memname">GLM_FUNC_DECL vec2 glm::unpackUnorm2x16 </td>
    316. 

  316.           <td>(</td>
    317. 

  317.           <td class="paramtype">uint const &amp;&#160;</td>
    318. 

  318.           <td class="paramname"><em>p</em></td><td>)</td>
    319. 

  319.           <td></td>
    320. 

  320.         </tr>
    321. 

  321.       </table>
    322. 

  322. </div><div class="memdoc">
    323. 

  323. 

  324. <p>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. </p>
    325. 

  325. <p>Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.</p>
    326. 

  326. <p>The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnorm2x16: f / 65535.0</p>
    327. 

  327. <p>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.</p>
    328. 

  328. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackUnorm2x16.xml">GLSL unpackUnorm2x16 man page</a> </dd>
    329. 

  329. <dd>
    330. 

  330. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    331. 

  331. 

  332. </div>
    333. 

  333. </div>
    334. 

  334. <a class="anchor" id="gaa2dee2a1ff4707d710d90c17985d0b40"></a>
    335. 

  335. <div class="memitem">
    336. 

  336. <div class="memproto">
    337. 

  337.       <table class="memname">
    338. 

  338.         <tr>
    339. 

  339.           <td class="memname">GLM_FUNC_DECL vec4 glm::unpackUnorm4x8 </td>
    340. 

  340.           <td>(</td>
    341. 

  341.           <td class="paramtype">uint const &amp;&#160;</td>
    342. 

  342.           <td class="paramname"><em>p</em></td><td>)</td>
    343. 

  343.           <td></td>
    344. 

  344.         </tr>
    345. 

  345.       </table>
    346. 

  346. </div><div class="memdoc">
    347. 

  347. 

  348. <p>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. </p>
    349. 

  349. <p>Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.</p>
    350. 

  350. <p>The conversion for unpacked fixed-point value f to floating point is done as follows: unpackUnorm4x8: f / 255.0</p>
    351. 

  351. <p>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.</p>
    352. 

  352. <dl class="section see"><dt>See Also</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackUnorm4x8.xml">GLSL unpackUnorm4x8 man page</a> </dd>
    353. 

  353. <dd>
    354. 

  354. <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.4 Floating-Point Pack and Unpack Functions</a> </dd></dl>
    355. 

  355. 

  356. </div>
    357. 

  357. </div>
    358. 

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    359. 

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    360. 

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    361. 

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    367.