diff options
Diffstat (limited to 'engine-ocean/External/glew/auto/EGL-Registry/sdk/docs/man/html/eglCreateSync.xhtml')
| -rw-r--r-- | engine-ocean/External/glew/auto/EGL-Registry/sdk/docs/man/html/eglCreateSync.xhtml | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/engine-ocean/External/glew/auto/EGL-Registry/sdk/docs/man/html/eglCreateSync.xhtml b/engine-ocean/External/glew/auto/EGL-Registry/sdk/docs/man/html/eglCreateSync.xhtml new file mode 100644 index 0000000..5ca5676 --- /dev/null +++ b/engine-ocean/External/glew/auto/EGL-Registry/sdk/docs/man/html/eglCreateSync.xhtml @@ -0,0 +1,389 @@ +<?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">eglCreateSync - 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="eglCreateSync"> + <div class="titlepage"/> + <div class="refnamediv"> + <h2>Name</h2> + <p>eglCreateSync — + create a new <abbr class="acronym">EGL</abbr> sync object + </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">EGLSync <strong class="fsfunc">eglCreateSync</strong>(</code> + </td> + <td>EGLDisplay <var class="pdparam">display</var>, </td> + </tr> + <tr> + <td> </td> + <td>EGLEnum <var class="pdparam">type</var>, </td> + </tr> + <tr> + <td> </td> + <td>EGLAttrib const * <var class="pdparam">attrib_list</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 <abbr class="acronym">EGL</abbr> display connection. + </p> + </dd> + <dt> + <span class="term"> + <em class="parameter"> + <code>type</code> + </em> + </span> + </dt> + <dd> + <p> + Specifies the type of sync object to create. + </p> + </dd> + <dt> + <span class="term"> + <em class="parameter"> + <code>attrib_list</code> + </em> + </span> + </dt> + <dd> + <p> + Specifies attributes and attribute values for the sync + object being created. + </p> + </dd> + </dl> + </div> + </div> + <div class="refsect1" id="description"> + <h2>Description</h2> + <p> + <em class="firstterm">sync objects</em> are provided to enable + synchronization of client API operations between threads and/or + between API contexts. Sync objects may be tested or waited upon + by application threads. + </p> + <p> + Sync objects have a status with two possible states: + <em class="firstterm">signaled</em> and + <em class="firstterm">unsignaled</em>. Initially, sync objects are + unsignaled. EGL may be asked to wait for a sync object to become + signaled, or a sync object's status may be queried. + </p> + <p> + Depending on the type of a sync object, its status may be + changed either by an external event, or by explicitly signaling + and unsignaling the sync. + </p> + <p> + <code class="function">eglCreateSync</code> creates a sync object of the specified + <em class="parameter"><code>type</code></em> associated with the specified display + <em class="parameter"><code>display</code></em>, and returns a handle to the new object. + <em class="parameter"><code>attrib_list</code></em> is an attribute-value list specifying + other attributes of the sync object, terminated by an attribute entry + <code class="constant">EGL_NONE</code>. Attributes not specified in the list will be + assigned their default values. + </p> + <p> + Once the <em class="firstterm">condition</em> of the sync object is satisfied, + the sync is signaled, causing any <code class="function">eglClientWaitSync</code> or + <code class="function">eglWaitSync</code> commands blocking on + <em class="parameter"><code>sync</code></em> to unblock. + </p> + </div> + <div class="refsect1" id="fencesync"> + <h2>Creating Fence Sync Objects</h2> + <p> + If <em class="parameter"><code>type</code></em> is + <code class="constant">EGL_SYNC_FENCE</code>, a fence sync object is + created. In this case <em class="parameter"><code>attrib_list</code></em> must be + <code class="constant">NULL</code> or empty (containing only + <code class="constant">EGL_NONE</code>). Attributes of the fence sync + object, and their initial values, are: + </p> + <div class="variablelist"> + <dl class="variablelist"> + <dt> + <span class="term"> + <code class="constant">EGL_SYNC_TYPE</code> + </span> + </dt> + <dd> + <p> + <code class="constant">EGL_SYNC_FENCE</code> + </p> + </dd> + <dt> + <span class="term"> + <code class="constant">EGL_SYNC_STATUS</code> + </span> + </dt> + <dd> + <p> + <code class="constant">EGL_UNSIGNALED</code> + </p> + </dd> + <dt> + <span class="term"> + <code class="constant">EGL_SYNC_CONDITION</code> + </span> + </dt> + <dd> + <p> + <code class="constant">EGL_SYNC_PRIOR_COMMANDS_COMPLETE</code> + </p> + </dd> + </dl> + </div> + <p> + When a fence sync object is created, <code class="function">eglCreateSync</code> also inserts a + fence command into the command stream of the bound client API's current + context (i.e., the context returned by <code class="function">eglGetCurrentContext</code>), and + associates it with the newly created sync object. + </p> + <p> + The only condition supported for fence sync objects is + <code class="constant">EGL_SYNC_PRIOR_COMMANDS_COMPLETE</code>, which is satisfied by completion of + the fence command corresponding to the sync object, and all preceding + commands in the associated client API context's command stream. The sync + object will not be signaled until all effects from these commands on the + client API's internal and framebuffer state are fully realized. No other + state is affected by execution of the fence command. + </p> + <p> + Creation of fence sync objects requires support from the bound + client API, and will not succeed unless the client API satisfies + one of the following properties. Note that + <code class="function">eglWaitSync</code> also requires satisfying these + conditions. + </p> + <p> + </p> + <div class="itemizedlist"> + <ul class="itemizedlist" style="list-style-type: disc; "> + <li class="listitem"> + <p> + client API is OpenGL, and either the OpenGL version is + 3.2 or greater, or the <code class="constant">GL_ARB_sync</code> + extension is supported. + </p> + </li> + <li class="listitem"> + <p> + client API is OpenGL ES, and either the OpenGL ES + version is 3.0 or greater, or the + <code class="constant">GL_OES_EGL_sync</code> extension is + supported. + </p> + </li> + <li class="listitem"> + <p> + client API is OpenVG, and the + <code class="constant">VG_KHR_EGL_sync</code> extension is + supported. + </p> + </li> + </ul> + </div> + <p> + </p> + </div> + <div class="refsect1" id="openclsync"> + <h2>Creating OpenCL Event Sync Objects</h2> + <p> + If <em class="parameter"><code>type</code></em> is + <code class="constant">EGL_SYNC_CL_EVENT</code>, an OpenCL event sync + object is created. In this case + <em class="parameter"><code>attrib_list</code></em> must contain the attribute + <code class="constant">EGL_CL_EVENT_HANDLE</code>, set to a valid OpenCL + event handle returned by a call to + <code class="function">clEnqueueReleaseGLObjects</code> or + <code class="function">clEnqueueReleaseEGLObjects</code>; other types of + OpenCL event handles are not supported. Note that + <code class="constant">EGL_CL_EVENT_HANDLE</code> is not a queriable + property of a sync object. Attributes of the OpenCL event sync + object, and their initial values, are: + </p> + <div class="variablelist"> + <dl class="variablelist"> + <dt> + <span class="term"> + <code class="constant">EGL_SYNC_TYPE</code> + </span> + </dt> + <dd> + <p> + <code class="constant">EGL_SYNC_CL_EVENT</code> + </p> + </dd> + <dt> + <span class="term"> + <code class="constant">EGL_SYNC_STATUS</code> + </span> + </dt> + <dd> + <p> + Depends on status of <em class="parameter"><code>event</code></em> + </p> + </dd> + <dt> + <span class="term"> + <code class="constant">EGL_SYNC_CONDITION</code> + </span> + </dt> + <dd> + <p> + <code class="constant">EGL_SYNC_CL_EVENT_COMPLETE</code> + </p> + </dd> + </dl> + </div> + <p> + The status of such a sync object depends on + <em class="parameter"><code>event</code></em>. When the status of + <em class="parameter"><code>event</code></em> is <code class="constant">CL_QUEUED</code>, + <code class="constant">CL_SUBMITTED</code>, or + <code class="constant">CL_RUNNING</code>, the status of the linked sync + object will be <code class="constant">EGL_UNSIGNALED</code>. When the + status of <em class="parameter"><code>event</code></em> changes to + <code class="constant">CL_COMPLETE</code>, the status of the linked sync + object will become <code class="constant">EGL_SIGNALED</code>. + </p> + <p> + The only condition supported for OpenCL event sync objects is + <code class="constant">EGL_SYNC_CL_EVENT_COMPLETE</code>, which is + satisfied when the status of the OpenCL event associated with + the sync object changes to <code class="constant">CL_COMPLETE</code>. + </p> + <p> + Creating a linked sync object places a reference on the linked + OpenCL event object. When the sync object is deleted, the + reference will be removed from the event object. + </p> + <p> + However, implementations are not required to validate the OpenCL + event, and passing an invalid event handle in + <em class="parameter"><code>attrib_list</code></em> may result in undefined + behavior up to and including program termination. + </p> + </div> + <div class="refsect1" id="notes"> + <h2>Notes</h2> + <p> + <code class="function">eglCreateSync</code> is supported only if the EGL + version is 1.5 or greater. + </p> + </div> + <div class="refsect1" id="errors"> + <h2>Errors</h2> + <p> + <code class="function">eglCreateSync</code> returns + <code class="constant">EGL_NO_SYNC</code> on failure. + </p> + <p> + If <em class="parameter"><code>display</code></em> is not the name of a valid, + initialized <span class="type">EGLDisplay</span>, an + <code class="constant">EGL_BAD_DISPLAY</code> error is generated. + </p> + <p> + If <em class="parameter"><code>attrib_list</code></em> contains an attribute name + not defined for the type of sync object being created, an + <code class="constant">EGL_BAD_ATTRIBUTE</code> error is generated. + </p> + <p> + If <em class="parameter"><code>type</code></em> is not a supported type of sync + object, an <code class="constant">EGL_BAD_PARAMETER</code> error is + generated. + </p> + <p> + If <em class="parameter"><code>type</code></em> is + <code class="constant">EGL_SYNC_FENCE</code> and no context is current + for the bound API (i.e., + <code class="function">eglGetCurrentContext</code> returns + <code class="constant">EGL_NO_CONTEXT</code>), an + <code class="constant">EGL_BAD_MATCH</code> error is generated. + </p> + <p> + If <em class="parameter"><code>type</code></em> is + <code class="constant">EGL_SYNC_FENCE</code> and + <em class="parameter"><code>display</code></em> does not match the + <span class="type">EGLDisplay</span> of the currently bound context for the + currently bound client API (the <span class="type">EGLDisplay</span> returned + by <code class="function">eglGetCurrentDisplay</code>), an + <code class="constant">EGL_BAD_MATCH</code> error is generated. + </p> + <p> + If <em class="parameter"><code>type</code></em> is + <code class="constant">EGL_SYNC_FENCE</code> and the current context for + the currently bound client API does not support fence commands, + an <code class="constant">EGL_BAD_MATCH</code> error is generated. + </p> + <p> + If <em class="parameter"><code>type</code></em> is + <code class="constant">EGL_SYNC_CL_EVENT</code> and + <code class="constant">EGL_CL_EVENT_HANDLE</code> is not specified in + <em class="parameter"><code>attrib_list</code></em>, or its attribute value is + not a valid OpenCL event handle as described above, then an + <code class="constant">EGL_BAD_ATTRIBUTE</code> error is generated. + </p> + </div> + <div class="refsect1" id="seealso"> + <h2>See Also</h2> + <p> + <code class="function">clEnqueueReleaseGLObjects</code>, + <code class="function">clEnqueueReleaseEGLObjects</code>, + <a class="citerefentry" href="eglClientWaitSync.xhtml"><span class="citerefentry"><span class="refentrytitle">eglClientWaitSync</span></span></a>, + <a class="citerefentry" href="eglCreateSync.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCreateSync</span></span></a>, + <a class="citerefentry" href="eglGetCurrentContext.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentContext</span></span></a>, + <a class="citerefentry" href="eglGetCurrentDisplay.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentDisplay</span></span></a>, + <a class="citerefentry" href="eglWaitSync.xhtml"><span class="citerefentry"><span class="refentrytitle">eglWaitSync</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> |