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authorjjesswan <jessica_wan@brown.edu>2024-04-22 21:56:26 -0400
committerjjesswan <jessica_wan@brown.edu>2024-04-22 21:56:26 -0400
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parentcd7c76017a12bb548036571c1ff13e551369d06d (diff)
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
+ <head>
+ <title xmlns:xlink="http://www.w3.org/1999/xlink">eglReleaseTexImage - EGL Reference Pages</title>
+ <link rel="stylesheet" type="text/css" href="khronos-man.css"/>
+ <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"/>
+ </head>
+ <body>
+ <header/>
+ <div class="refentry" id="eglReleaseTexImage">
+ <div class="titlepage"/>
+ <div class="refnamediv">
+ <h2>Name</h2>
+ <p>eglReleaseTexImage —
+ Releases a color buffer that is being used as a texture
+ </p>
+ </div>
+ <div class="refsynopsisdiv">
+ <h2>C Specification</h2>
+ <div class="funcsynopsis">
+ <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
+ <tr>
+ <td>
+ <code class="funcdef">EGLBoolean <strong class="fsfunc">eglReleaseTexImage</strong>(</code>
+ </td>
+ <td>EGLDisplay <var class="pdparam">display</var>, </td>
+ </tr>
+ <tr>
+ <td> </td>
+ <td>EGLSurface <var class="pdparam">surface</var>, </td>
+ </tr>
+ <tr>
+ <td> </td>
+ <td>EGLint <var class="pdparam">buffer</var><code>)</code>;</td>
+ </tr>
+ </table>
+ <div class="funcprototype-spacer"> </div>
+ </div>
+ </div>
+ <div class="refsect1" id="parameters">
+ <h2>Parameters</h2>
+ <div class="variablelist">
+ <dl class="variablelist">
+ <dt>
+ <span class="term">
+ <em class="parameter">
+ <code>display</code>
+ </em>
+ </span>
+ </dt>
+ <dd>
+ <p>Specifies the EGL display connection.</p>
+ </dd>
+ <dt>
+ <span class="term">
+ <em class="parameter">
+ <code>surface</code>
+ </em>
+ </span>
+ </dt>
+ <dd>
+ <p>
+ Specifies the EGL surface.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <em class="parameter">
+ <code>buffer</code>
+ </em>
+ </span>
+ </dt>
+ <dd>
+ <p>Specifies the texture image data.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ <div class="refsect1" id="description">
+ <h2>Description</h2>
+ <p>
+ The specified color buffer is released back to the surface. The surface is made
+ available for reading and writing when it no longer has any color buffers bound as
+ textures.
+ </p>
+ </div>
+ <div class="refsect1" id="notes">
+ <h2>Notes</h2>
+ <p>
+ If the specified color buffer is no longer bound to a texture (e.g., because the
+ texture object was deleted) then eglReleaseTexImage has no effect. No error is
+ generated.
+ </p>
+ <p>
+ The contents of the color buffer are undefined when it is first released. In particular,
+ there is no guarantee that the texture image is still present. However, the contents of
+ other color buffers are unaffected by this call. Also, the contents of the depth and stencil buffers
+ are not affected by <a class="citerefentry" href="eglBindTexImage.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindTexImage</span></span></a>
+ and <code class="function">eglReleaseTexImage</code>.
+ </p>
+ <p>
+ After a color buffer is released from a texture (either explicitly by calling
+ <code class="function">eglReleaseTexImage</code> or implicitly by calling a routine such as
+ <a class="citerefentry" href="glTexImage2D.xhtml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>),
+ all texture images that were defined by the color buffer become <code class="constant">NULL</code>
+ (it is as if <a class="citerefentry" href="glTexImage.xhtml"><span class="citerefentry"><span class="refentrytitle">glTexImage</span></span></a> was called with an image of zero width).
+ </p>
+ </div>
+ <div class="refsect1" id="errors">
+ <h2>Errors</h2>
+ <p>
+ <code class="constant">EGL_BAD_MATCH</code> is generated if the
+ surface attribute <code class="constant">EGL_TEXTURE_FORMAT</code> is
+ set to <code class="constant">EGL_NO_TEXTURE</code>.
+ </p>
+ <p>
+ <code class="constant">EGL_BAD_MATCH</code> is generated if
+ <em class="parameter"><code>buffer</code></em> is not a valid buffer
+ (currently only <code class="constant">EGL_BACK_BUFFER</code> may be
+ specified).
+ </p>
+ <p>
+ <code class="constant">EGL_BAD_SURFACE</code> is generated if
+ <em class="parameter"><code>surface</code></em> is not an EGL surface, or is
+ not a bound pbuffer surface.
+ </p>
+ </div>
+ <div class="refsect1" id="seealso">
+ <h2>See Also</h2>
+ <p>
+ <a class="citerefentry" href="eglBindTexImage.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindTexImage</span></span></a>
+ </p>
+ </div>
+ <p>
+ </p>
+ <div class="refsect3" id="copyright">
+ <img src="KhronosLogo.jpg"/>
+ <p>
+ Copyright © 2003-2014 The Khronos Group Inc.
+ Permission is hereby granted, free of charge, to any person obtaining a
+ copy of this software and/or associated documentation files (the
+ "Materials"), to deal in the Materials without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Materials, and to
+ permit persons to whom the Materials are furnished to do so, subject to
+ the condition that this copyright notice and permission notice shall be included
+ in all copies or substantial portions of the Materials.
+ </p>
+ </div>
+ <p>
+</p>
+ </div>
+ <footer/>
+ </body>
+</html>