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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
commita556b45abf18f1bd509daaf63b66b7d55e9fd291 (patch)
treebc9b8a2d184c12aee236e7f9f276a34b84ca552d /engine-ocean/External/glew/auto/EGL-Registry/sdk/docs/man/html/eglGetConfigAttrib.xhtml
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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">eglGetConfigAttrib - 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="eglGetConfigAttrib">
+ <div class="titlepage"/>
+ <div class="refnamediv">
+ <h2>Name</h2>
+ <p>eglGetConfigAttrib —
+ return information about an <abbr class="acronym">EGL</abbr> frame buffer
+ configuration
+ </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">eglGetConfigAttrib</strong>(</code>
+ </td>
+ <td>EGLDisplay <var class="pdparam">display</var>, </td>
+ </tr>
+ <tr>
+ <td> </td>
+ <td>EGLConfig <var class="pdparam">config</var>, </td>
+ </tr>
+ <tr>
+ <td> </td>
+ <td>EGLint <var class="pdparam">attribute</var>, </td>
+ </tr>
+ <tr>
+ <td> </td>
+ <td>EGLint * <var class="pdparam">value</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>config</code>
+ </em>
+ </span>
+ </dt>
+ <dd>
+ <p>Specifies the EGL frame buffer configuration to be
+ queried.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <em class="parameter">
+ <code>attribute</code>
+ </em>
+ </span>
+ </dt>
+ <dd>
+ <p>Specifies the EGL rendering context attribute to be
+ returned.</p>
+ </dd>
+ <dt>
+ <span class="term">
+ <em class="parameter">
+ <code>value</code>
+ </em>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the requested value.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ <div class="refsect1" id="description">
+ <h2>Description</h2>
+ <p>
+ <code class="function">eglGetConfigAttrib</code> returns in
+ <em class="parameter"><code>value</code></em> the value of
+ <em class="parameter"><code>attribute</code></em> for
+ <em class="parameter"><code>config</code></em>
+ (config attributes are described in more detail in the
+ <a class="citerefentry" href="eglChooseConfig.xhtml"><span class="citerefentry"><span class="refentrytitle">eglChooseConfig</span></span></a>
+ reference page).
+ <em class="parameter"><code>attribute</code></em> can be one of the following:
+ </p>
+ <div class="variablelist">
+ <dl class="variablelist">
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_ALPHA_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of bits of alpha stored in the
+ color buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_ALPHA_MASK_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>
+ Returns the number of bits in the alpha mask buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_BIND_TO_TEXTURE_RGB</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns <code class="constant">EGL_TRUE</code> if color buffers can be
+ bound to an RGB texture,
+ <code class="constant">EGL_FALSE</code> otherwise.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_BIND_TO_TEXTURE_RGBA</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns <code class="constant">EGL_TRUE</code> if color buffers can be
+ bound to an RGBA texture,
+ <code class="constant">EGL_FALSE</code> otherwise.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_BLUE_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of bits of blue stored in the
+ color buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_BUFFER_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the depth of the color buffer.
+ It is the sum of
+ <code class="constant">EGL_RED_SIZE</code>,
+ <code class="constant">EGL_GREEN_SIZE</code>,
+ <code class="constant">EGL_BLUE_SIZE</code>, and
+ <code class="constant">EGL_ALPHA_SIZE</code>.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_COLOR_BUFFER_TYPE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>
+ Returns the color buffer type. Possible types are
+ <code class="constant">EGL_RGB_BUFFER</code> and
+ <code class="constant">EGL_LUMINANCE_BUFFER</code>.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_CONFIG_CAVEAT</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the caveats for the frame buffer configuration.
+ Possible caveat values are
+ <code class="constant">EGL_NONE</code>,
+ <code class="constant">EGL_SLOW_CONFIG</code>, and
+ <code class="constant">EGL_NON_CONFORMANT</code>.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_CONFIG_ID</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the ID of the frame buffer configuration.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_CONFORMANT</code>
+ </span>
+ </dt>
+ <dd>
+ <p>
+ Returns a bitmask indicating which client API contexts
+ created with respect to this config are conformant.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_DEPTH_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of bits in the depth buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_GREEN_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of bits of green stored in the
+ color buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_LEVEL</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the frame buffer level.
+ Level zero is the default frame buffer.
+ Positive levels correspond to frame buffers that overlay the default
+ buffer and negative levels correspond to frame buffers that underlay
+ the default buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_LUMINANCE_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>
+ Returns the number of bits of luminance stored in the luminance buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_MAX_PBUFFER_WIDTH</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the maximum width of a pixel buffer surface in pixels.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_MAX_PBUFFER_HEIGHT</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the maximum height of a pixel buffer surface in pixels.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_MAX_PBUFFER_PIXELS</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the maximum size of a pixel buffer surface in pixels.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_MAX_SWAP_INTERVAL</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the maximum value that can be passed to eglSwapInterval.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_MIN_SWAP_INTERVAL</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the minimum value that can be passed to eglSwapInterval.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_NATIVE_RENDERABLE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns <code class="constant">EGL_TRUE</code> if native rendering
+ APIs can render into the surface,
+ <code class="constant">EGL_FALSE</code> otherwise.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_NATIVE_VISUAL_ID</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the ID of the associated native visual.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_NATIVE_VISUAL_TYPE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the type of the associated native visual.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_RED_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of bits of red stored in the
+ color buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_RENDERABLE_TYPE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>
+ Returns a bitmask indicating the types of supported
+ client API contexts.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_SAMPLE_BUFFERS</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of multisample buffers.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_SAMPLES</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of samples per pixel.</p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_STENCIL_SIZE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the number of bits in the stencil buffer.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_SURFACE_TYPE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>
+ Returns a bitmask indicating the types of supported EGL
+ surfaces.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_TRANSPARENT_TYPE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the type of supported transparency.
+ Possible transparency values are:
+ <code class="constant">EGL_NONE</code>, and
+ <code class="constant">EGL_TRANSPARENT_RGB</code>.
+ </p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_TRANSPARENT_RED_VALUE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the transparent red value.</p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_TRANSPARENT_GREEN_VALUE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the transparent green value.</p>
+ </dd>
+ <dt>
+ <span class="term">
+ <code class="constant">EGL_TRANSPARENT_BLUE_VALUE</code>
+ </span>
+ </dt>
+ <dd>
+ <p>Returns the transparent blue value.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ <div class="refsect1" id="notes">
+ <h2>Notes</h2>
+ <p>
+ <code class="constant">EGL_CONFORMANT</code> is supported only if the
+ EGL version is 1.3 or greater.
+ </p>
+ <p>
+ <code class="constant">EGL_ALPHA_MASK_SIZE</code>,
+ <code class="constant">EGL_COLOR_BUFFER_TYPE</code>,
+ <code class="constant">EGL_LUMINANCE_SIZE</code>, and
+ <code class="constant">EGL_RENDERABLE_TYPE</code> are supported only
+ if the EGL version is 1.2 or greater.
+ </p>
+ <p>
+ While <code class="constant">EGL_MATCH_NATIVE_PIXMAP</code> can be
+ specified in the attribute list passed to
+ <a class="citerefentry" href="eglChooseConfig.xhtml"><span class="citerefentry"><span class="refentrytitle">eglChooseConfig</span></span></a>,
+ it is not an attribute of the resulting config and cannot be
+ queried using <code class="function">eglGetConfigAttrib</code>.
+ </p>
+ </div>
+ <div class="refsect1" id="errors">
+ <h2>Errors</h2>
+ <p>
+ <code class="constant">EGL_FALSE</code> is returned on failure,
+ <code class="constant">EGL_TRUE</code> otherwise.
+ <em class="parameter"><code>value</code></em> is not modified when
+ <code class="constant">EGL_FALSE</code> is returned.
+ </p>
+ <p>
+ <code class="constant">EGL_BAD_DISPLAY</code> is generated if
+ <em class="parameter"><code>display</code></em> is not an EGL display connection.
+ </p>
+ <p>
+ <code class="constant">EGL_NOT_INITIALIZED</code> is generated if
+ <em class="parameter"><code>display</code></em> has not been initialized.
+ </p>
+ <p>
+ <code class="constant">EGL_BAD_CONFIG</code> is generated if
+ <em class="parameter"><code>config</code></em> is not an EGL frame buffer configuration.
+ </p>
+ <p>
+ <code class="constant">EGL_BAD_ATTRIBUTE</code> is generated if
+ <em class="parameter"><code>attribute</code></em> is not a valid frame buffer
+ configuration attribute.
+ </p>
+ </div>
+ <div class="refsect1" id="seealso">
+ <h2>See Also</h2>
+ <p>
+ <a class="citerefentry" href="eglChooseConfig.xhtml"><span class="citerefentry"><span class="refentrytitle">eglChooseConfig</span></span></a>,
+ <a class="citerefentry" href="eglGetConfigs.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetConfigs</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>
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