cpp
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<div class="title">GLM_GTC_type_ptr<div class="ingroups"><a class="el" href="a00158.html">GTC Extensions (Stable)</a></div></div>  </div>
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defaultp &gt;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00179.html#ga52a16e333fef7e33ca740779482a8693">make_mat2</a> (T const *const ptr)</td></tr>
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genType::value_type const *&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00179.html#gaf019636bb8bd7c9efb7c7ce3bb23bcfc">value_ptr</a> (genType const &amp;vec)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Handles the interaction between pointers and vector, matrix types. </p>
<p>This extension defines an overloaded function, glm::value_ptr, which takes any of the <a class="el" href="a00163.html">core template types</a>. It returns a pointer to the memory layout of the object. Matrix types store their values in column-major order.</p>
<p>This is useful for uploading data to matrices or copying data to buffer objects.</p>
<p>Example: </p><div class="fragment"><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="a00039.html">glm/glm.hpp</a>&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;<a class="code" href="a00130.html">glm/gtc/type_ptr.hpp</a>&gt;</span></div>
<div class="line"></div>
<div class="line"><a class="code" href="a00161.html#gaa8ea2429bb3cb41a715258a447f39897">glm::vec3</a> aVector(3);</div>
<div class="line"><a class="code" href="a00161.html#gade0eb47c01f79384a6f38017ede17446">glm::mat4</a> someMatrix(1.0);</div>
<div class="line"></div>
<div class="line">glUniform3fv(uniformLoc, 1, <a class="code" href="a00179.html#gaf019636bb8bd7c9efb7c7ce3bb23bcfc">glm::value_ptr</a>(aVector));</div>
<div class="line">glUniformMatrix4fv(uniformMatrixLoc, 1, GL_FALSE, <a class="code" href="a00179.html#gaf019636bb8bd7c9efb7c7ce3bb23bcfc">glm::value_ptr</a>(someMatrix));</div>
</div><!-- fragment --><p>&lt;<a class="el" href="a00130.html" title="OpenGL Mathematics (glm.g-truc.net) ">glm/gtc/type_ptr.hpp</a>&gt; need to be included to use these functionalities. </p>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="ga52a16e333fef7e33ca740779482a8693"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">GLM_FUNC_DECL tmat2x2&lt;T, defaultp&gt; glm::make_mat2 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
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</div><div class="memdoc">

<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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<div class="memitem">
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        <tr>
          <td class="memname">GLM_FUNC_DECL tmat2x2&lt;T, defaultp&gt; glm::make_mat2x2 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

</div>
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<a class="anchor" id="ga37988c6dd941f617cdfab86d54375fc1"></a>
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          <td class="memname">GLM_FUNC_DECL tmat2x3&lt;T, defaultp&gt; glm::make_mat2x3 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

</div>
</div>
<a class="anchor" id="ga6dfb2ac10859b0cc8e3893ea84fa95b5"></a>
<div class="memitem">
<div class="memproto">
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        <tr>
          <td class="memname">GLM_FUNC_DECL tmat2x4&lt;T, defaultp&gt; glm::make_mat2x4 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

</div>
</div>
<a class="anchor" id="gac2bc10c519ffc8db9e24f325f23787ea"></a>
<div class="memitem">
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          <td class="memname">GLM_FUNC_DECL tmat3x3&lt;T, defaultp&gt; glm::make_mat3 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

</div>
</div>
<a class="anchor" id="gabe1e5066608a66da7a94f802b57b4eed"></a>
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          <td class="memname">GLM_FUNC_DECL tmat3x2&lt;T, defaultp&gt; glm::make_mat3x2 </td>
          <td>(</td>
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          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

</div>
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          <td class="memname">GLM_FUNC_DECL tmat3x3&lt;T, defaultp&gt; glm::make_mat3x3 </td>
          <td>(</td>
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          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

</div>
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          <td class="paramname"><em>ptr</em></td><td>)</td>
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<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tmat4x4&lt;T, defaultp&gt; glm::make_mat4 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
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<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tmat4x2&lt;T, defaultp&gt; glm::make_mat4x2 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
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<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tmat4x3&lt;T, defaultp&gt; glm::make_mat4x3 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
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<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tmat4x4&lt;T, defaultp&gt; glm::make_mat4x4 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
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<p>Build a matrix from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tquat&lt;T, defaultp&gt; glm::make_quat </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
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<p>Build a quaternion from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tvec2&lt;T, defaultp&gt; glm::make_vec2 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
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<p>Build a vector from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tvec3&lt;T, defaultp&gt; glm::make_vec3 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
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<p>Build a vector from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL tvec4&lt;T, defaultp&gt; glm::make_vec4 </td>
          <td>(</td>
          <td class="paramtype">T const *const&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
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<p>Build a vector from a pointer. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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          <td class="memname">GLM_FUNC_DECL genType::value_type const* glm::value_ptr </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>vec</em></td><td>)</td>
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<p>Return the constant address to the data of the input parameter. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00179.html" title="Handles the interaction between pointers and vector, matrix types. ">GLM_GTC_type_ptr</a> </dd></dl>

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