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19 KiB
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<div id="projectname">GLFW
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 <span id="projectnumber">3.0.2</span>
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<div id="projectbrief">A multi-platform library for OpenGL, window and input</div>
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<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Pages</a></div>
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<a href="#typedef-members">Typedefs</a> |
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<a href="#func-members">Functions</a> </div>
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<div class="title">Context handling</div> </div>
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Typedefs</h2></td></tr>
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<tr class="memitem:gabf42b10edde1c4fc71e212e576b9f811"><td class="memItemLeft" align="right" valign="top">typedef void(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__context.html#gabf42b10edde1c4fc71e212e576b9f811">GLFWglproc</a> )(void)</td></tr>
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<tr class="memdesc:gabf42b10edde1c4fc71e212e576b9f811"><td class="mdescLeft"> </td><td class="mdescRight">Client API function pointer type. <a href="#gabf42b10edde1c4fc71e212e576b9f811">More...</a><br/></td></tr>
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<tr class="separator:gabf42b10edde1c4fc71e212e576b9f811"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga1c04dc242268f827290fe40aa1c91157"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__context.html#ga1c04dc242268f827290fe40aa1c91157">glfwMakeContextCurrent</a> (<a class="el" href="group__window.html#ga3c96d80d363e67d13a41b5d1821f3242">GLFWwindow</a> *window)</td></tr>
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<tr class="memdesc:ga1c04dc242268f827290fe40aa1c91157"><td class="mdescLeft"> </td><td class="mdescRight">Makes the context of the specified window current for the calling thread. <a href="#ga1c04dc242268f827290fe40aa1c91157">More...</a><br/></td></tr>
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<tr class="separator:ga1c04dc242268f827290fe40aa1c91157"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac84759b1f6c2d271a4fea8ae89ec980d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__window.html#ga3c96d80d363e67d13a41b5d1821f3242">GLFWwindow</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__context.html#gac84759b1f6c2d271a4fea8ae89ec980d">glfwGetCurrentContext</a> (void)</td></tr>
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<tr class="memdesc:gac84759b1f6c2d271a4fea8ae89ec980d"><td class="mdescLeft"> </td><td class="mdescRight">Returns the window whose context is current on the calling thread. <a href="#gac84759b1f6c2d271a4fea8ae89ec980d">More...</a><br/></td></tr>
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<tr class="separator:gac84759b1f6c2d271a4fea8ae89ec980d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga15a5a1ee5b3c2ca6b15ca209a12efd14"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__context.html#ga15a5a1ee5b3c2ca6b15ca209a12efd14">glfwSwapBuffers</a> (<a class="el" href="group__window.html#ga3c96d80d363e67d13a41b5d1821f3242">GLFWwindow</a> *window)</td></tr>
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<tr class="memdesc:ga15a5a1ee5b3c2ca6b15ca209a12efd14"><td class="mdescLeft"> </td><td class="mdescRight">Swaps the front and back buffers of the specified window. <a href="#ga15a5a1ee5b3c2ca6b15ca209a12efd14">More...</a><br/></td></tr>
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<tr class="separator:ga15a5a1ee5b3c2ca6b15ca209a12efd14"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga6d4e0cdf151b5e579bd67f13202994ed"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__context.html#ga6d4e0cdf151b5e579bd67f13202994ed">glfwSwapInterval</a> (int interval)</td></tr>
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<tr class="memdesc:ga6d4e0cdf151b5e579bd67f13202994ed"><td class="mdescLeft"> </td><td class="mdescRight">Sets the swap interval for the current context. <a href="#ga6d4e0cdf151b5e579bd67f13202994ed">More...</a><br/></td></tr>
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<tr class="separator:ga6d4e0cdf151b5e579bd67f13202994ed"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga87425065c011cef1ebd6aac75e059dfa"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__context.html#ga87425065c011cef1ebd6aac75e059dfa">glfwExtensionSupported</a> (const char *extension)</td></tr>
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<tr class="memdesc:ga87425065c011cef1ebd6aac75e059dfa"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether the specified extension is available. <a href="#ga87425065c011cef1ebd6aac75e059dfa">More...</a><br/></td></tr>
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<tr class="separator:ga87425065c011cef1ebd6aac75e059dfa"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga35f1837e6f666781842483937612f163"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__context.html#gabf42b10edde1c4fc71e212e576b9f811">GLFWglproc</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__context.html#ga35f1837e6f666781842483937612f163">glfwGetProcAddress</a> (const char *procname)</td></tr>
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<tr class="memdesc:ga35f1837e6f666781842483937612f163"><td class="mdescLeft"> </td><td class="mdescRight">Returns the address of the specified function for the current context. <a href="#ga35f1837e6f666781842483937612f163">More...</a><br/></td></tr>
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<tr class="separator:ga35f1837e6f666781842483937612f163"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<h2 class="groupheader">Typedef Documentation</h2>
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<a class="anchor" id="gabf42b10edde1c4fc71e212e576b9f811"></a>
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<td class="memname">typedef void(* GLFWglproc)(void)</td>
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<p>Generic function pointer used for returning client API function pointers without forcing a cast from a regular pointer. </p>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">int glfwExtensionSupported </td>
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<td>(</td>
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<td class="paramtype">const char * </td>
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<td class="paramname"><em>extension</em></td><td>)</td>
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<p>This function returns whether the specified <a class="el" href="context.html#context_glext">OpenGL or context creation API extension</a> is supported by the current context. For example, on Windows both the OpenGL and WGL extension strings are checked.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">extension</td><td>The ASCII encoded name of the extension. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd><code>GL_TRUE</code> if the extension is available, or <code>GL_FALSE</code> otherwise.</dd></dl>
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<dl class="section remark"><dt>Remarks</dt><dd>This function may be called from secondary threads.</dd></dl>
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<dl class="section note"><dt>Note</dt><dd>As this functions searches one or more extension strings on each call, it is recommended that you cache its results if it's going to be used frequently. The extension strings will not change during the lifetime of a context, so there is no danger in doing this. </dd></dl>
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<a class="anchor" id="gac84759b1f6c2d271a4fea8ae89ec980d"></a>
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<td class="memname"><a class="el" href="group__window.html#ga3c96d80d363e67d13a41b5d1821f3242">GLFWwindow</a>* glfwGetCurrentContext </td>
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<td>(</td>
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<td class="paramtype">void </td>
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<p>This function returns the window whose context is current on the calling thread.</p>
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<dl class="section return"><dt>Returns</dt><dd>The window whose context is current, or <code>NULL</code> if no window's context is current.</dd></dl>
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<dl class="section remark"><dt>Remarks</dt><dd>This function may be called from secondary threads.</dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__context.html#ga1c04dc242268f827290fe40aa1c91157" title="Makes the context of the specified window current for the calling thread.">glfwMakeContextCurrent</a> </dd></dl>
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<td class="memname"><a class="el" href="group__context.html#gabf42b10edde1c4fc71e212e576b9f811">GLFWglproc</a> glfwGetProcAddress </td>
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<td>(</td>
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<td class="paramtype">const char * </td>
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<p>This function returns the address of the specified <a class="el" href="context.html#context_glext">client API or extension function</a>, if it is supported by the current context.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">procname</td><td>The ASCII encoded name of the function. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The address of the function, or <code>NULL</code> if the function is unavailable.</dd></dl>
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<dl class="section remark"><dt>Remarks</dt><dd>This function may be called from secondary threads.</dd></dl>
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<dl class="section note"><dt>Note</dt><dd>The addresses of these functions are not guaranteed to be the same for all contexts, especially if they use different client APIs or even different context creation hints. </dd></dl>
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<td class="memname">void glfwMakeContextCurrent </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="group__window.html#ga3c96d80d363e67d13a41b5d1821f3242">GLFWwindow</a> * </td>
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<td class="paramname"><em>window</em></td><td>)</td>
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<p>This function makes the context of the specified window current on the calling thread. A context can only be made current on a single thread at a time and each thread can have only a single current context at a time.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">window</td><td>The window whose context to make current, or <code>NULL</code> to detach the current context.</td></tr>
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<dl class="section remark"><dt>Remarks</dt><dd>This function may be called from secondary threads.</dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__context.html#gac84759b1f6c2d271a4fea8ae89ec980d" title="Returns the window whose context is current on the calling thread.">glfwGetCurrentContext</a> </dd></dl>
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<td class="memname">void glfwSwapBuffers </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="group__window.html#ga3c96d80d363e67d13a41b5d1821f3242">GLFWwindow</a> * </td>
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<td class="paramname"><em>window</em></td><td>)</td>
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<p>This function swaps the front and back buffers of the specified window. If the swap interval is greater than zero, the GPU driver waits the specified number of screen updates before swapping the buffers.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">window</td><td>The window whose buffers to swap.</td></tr>
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</dd>
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</dl>
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<dl class="section remark"><dt>Remarks</dt><dd>This function may be called from secondary threads.</dd></dl>
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<dl class="section user"><dt>New in GLFW 3</dt><dd>This function no longer calls <a class="el" href="group__window.html#ga37bd57223967b4211d60ca1a0bf3c832">glfwPollEvents</a>. You need to call it or <a class="el" href="group__window.html#ga554e37d781f0a997656c26b2c56c835e">glfwWaitEvents</a> yourself.</dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__context.html#ga6d4e0cdf151b5e579bd67f13202994ed" title="Sets the swap interval for the current context.">glfwSwapInterval</a> </dd></dl>
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<td class="memname">void glfwSwapInterval </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>interval</em></td><td>)</td>
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<td></td>
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</div><div class="memdoc">
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<p>This function sets the swap interval for the current context, i.e. the number of screen updates to wait before swapping the buffers of a window and returning from <a class="el" href="group__context.html#ga15a5a1ee5b3c2ca6b15ca209a12efd14">glfwSwapBuffers</a>. This is sometimes called 'vertical synchronization', 'vertical retrace synchronization' or 'vsync'.</p>
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<p>Contexts that support either of the <code>WGL_EXT_swap_control_tear</code> and <code>GLX_EXT_swap_control_tear</code> extensions also accept negative swap intervals, which allow the driver to swap even if a frame arrives a little bit late. You can check for the presence of these extensions using <a class="el" href="group__context.html#ga87425065c011cef1ebd6aac75e059dfa">glfwExtensionSupported</a>. For more information about swap tearing, see the extension specifications.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">interval</td><td>The minimum number of screen updates to wait for until the buffers are swapped by <a class="el" href="group__context.html#ga15a5a1ee5b3c2ca6b15ca209a12efd14">glfwSwapBuffers</a>.</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section remark"><dt>Remarks</dt><dd>This function may be called from secondary threads.</dd></dl>
|
||
|
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<dl class="section note"><dt>Note</dt><dd>Some GPU drivers do not honor the requested swap interval, either because of user settings that override the request or due to bugs in the driver.</dd></dl>
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||
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group__context.html#ga15a5a1ee5b3c2ca6b15ca209a12efd14" title="Swaps the front and back buffers of the specified window.">glfwSwapBuffers</a> </dd></dl>
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<!-- start footer part -->
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