<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- qquickgraphicsinfo.cpp -->
<title>GraphicsInfo QML Type | Qt Quick 5.12.6</title>
<link rel="stylesheet" type="text/css" href="style/offline-simple.css" />
<script type="text/javascript">
document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css");
// loading style sheet breaks anchors that were jumped to before
// so force jumping to anchor again
setTimeout(function() {
var anchor = location.hash;
// need to jump to different anchor first (e.g. none)
location.hash = "#";
setTimeout(function() {
location.hash = anchor;
}, 0);
}, 0);
</script>
</head>
<body>
<div class="header" id="qtdocheader">
<div class="main">
<div class="main-rounded">
<div class="navigationbar">
<table><tr>
<td >Qt 5.12</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-qmlmodule.html">QML Types</a></td><td >GraphicsInfo QML Type</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtquick-index.html">Qt 5.12.6 Reference Documentation</a></td>
</tr></table>
</div>
</div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar">
<div class="toc">
<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
</ul>
</div>
<div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">GraphicsInfo QML Type</h1>
<span class="subtitle"></span>
<!-- $$$GraphicsInfo-brief -->
<p>Provides information about the used Qt Quick backend. <a href="#details">More...</a></p>
<!-- @@@GraphicsInfo -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQuick 2.12</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> QtQuick 2.8</td></tr></table></div><ul>
<li><a href="qml-qtquick-graphicsinfo-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="properties"></a>
<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#api-prop">api</a></b></b> : enumeration</li>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#majorVersion-prop">majorVersion</a></b></b> : int</li>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#minorVersion-prop">minorVersion</a></b></b> : int</li>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#profile-prop">profile</a></b></b> : enumeration</li>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#renderableType-prop">renderableType</a></b></b> : enumeration</li>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#shaderCompilationType-prop">shaderCompilationType</a></b></b> : enumeration</li>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#shaderSourceType-prop">shaderSourceType</a></b></b> : enumeration</li>
<li class="fn"><b><b><a href="qml-qtquick-graphicsinfo.html#shaderType-prop">shaderType</a></b></b> : enumeration</li>
</ul>
<!-- $$$GraphicsInfo-description -->
<a name="details"></a>
<h2 id="details">Detailed Description</h2>
<p>The <a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a> attached type provides information about the scenegraph backend used to render the contents of the associated window.</p>
<p>If the item to which the properties are attached is not currently associated with any window, the properties are set to default values. When the associated window changes, the properties will update.</p>
<!-- @@@GraphicsInfo -->
<h2>Property Documentation</h2>
<!-- $$$api -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="api-prop">
<td class="tblQmlPropNode"><p>
<a name="api-prop"></a><span class="name">api</span> : <span class="type">enumeration</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property describes the graphics API that is currently in use.</p>
<p>The possible values are:</p>
<ul>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.Unknown - the default value when no active scenegraph is associated with the item</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.Software - Qt Quick's software renderer based on QPainter with the raster paint engine</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.OpenGL - OpenGL or OpenGL ES</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.Direct3D12 - Direct3D 12</li>
</ul>
</div></div><!-- @@@api -->
<br/>
<!-- $$$majorVersion -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="majorVersion-prop">
<td class="tblQmlPropNode"><p>
<a name="majorVersion-prop"></a><span class="name">majorVersion</span> : <span class="type">int</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the major version of the graphics API in use.</p>
<p>With OpenGL the default version is <code>2.0</code>.</p>
<p><b>See also </b><a href="qml-qtquick-graphicsinfo.html#minorVersion-prop">minorVersion</a> and <a href="qml-qtquick-graphicsinfo.html#profile-prop">profile</a>.</p>
</div></div><!-- @@@majorVersion -->
<br/>
<!-- $$$minorVersion -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="minorVersion-prop">
<td class="tblQmlPropNode"><p>
<a name="minorVersion-prop"></a><span class="name">minorVersion</span> : <span class="type">int</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the minor version of the graphics API in use.</p>
<p>With OpenGL the default version is <code>2.0</code>.</p>
<p><b>See also </b><a href="qml-qtquick-graphicsinfo.html#majorVersion-prop">majorVersion</a> and <a href="qml-qtquick-graphicsinfo.html#profile-prop">profile</a>.</p>
</div></div><!-- @@@minorVersion -->
<br/>
<!-- $$$profile -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="profile-prop">
<td class="tblQmlPropNode"><p>
<a name="profile-prop"></a><span class="name">profile</span> : <span class="type">enumeration</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the configured OpenGL context profile.</p>
<p>The possible values are:</p>
<ul>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.OpenGLNoProfile (default) - OpenGL version is lower than 3.2 or OpenGL is not in use.</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.OpenGLCoreProfile - Functionality deprecated in OpenGL version 3.0 is not available.</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.OpenGLCompatibilityProfile - Functionality from earlier OpenGL versions is available.</li>
</ul>
<p>Reusable QML components will typically use this property in bindings in order to choose between core and non core profile compatible shader sources.</p>
<p><b>See also </b><a href="qml-qtquick-graphicsinfo.html#majorVersion-prop">majorVersion</a>, <a href="qml-qtquick-graphicsinfo.html#minorVersion-prop">minorVersion</a>, and QSurfaceFormat.</p>
</div></div><!-- @@@profile -->
<br/>
<!-- $$$renderableType -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="renderableType-prop">
<td class="tblQmlPropNode"><p>
<a name="renderableType-prop"></a><span class="name">renderableType</span> : <span class="type">enumeration</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the renderable type. The value has no meaning for APIs other than OpenGL.</p>
<p>The possible values are:</p>
<ul>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.SurfaceFormatUnspecified (default) - Unspecified rendering method</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.SurfaceFormatOpenGL - Desktop OpenGL or other graphics API</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.SurfaceFormatOpenGLES - OpenGL ES</li>
</ul>
<p><b>See also </b>QSurfaceFormat.</p>
</div></div><!-- @@@renderableType -->
<br/>
<!-- $$$shaderCompilationType -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="shaderCompilationType-prop">
<td class="tblQmlPropNode"><p>
<a name="shaderCompilationType-prop"></a><span class="name">shaderCompilationType</span> : <span class="type">enumeration</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property contains a bitmask of the shader compilation approaches supported by the Qt Quick backend the application is using.</p>
<ul>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.RuntimeCompilation</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.OfflineCompilation</li>
</ul>
<p>With OpenGL the value is <a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.RuntimeCompilation, which corresponds to the traditional way of using <a href="qml-qtquick-shadereffect.html">ShaderEffect</a>. Non-OpenGL backends are expected to focus more on <a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.OfflineCompilation, however.</p>
<p><b>Note: </b>The value is only up-to-date once the item is associated with a window. Bindings relying on the value have to keep this in mind since the value may change from <code>0</code> to the actual bitmask after component initialization is complete. This is particularly relevant for <a href="qml-qtquick-shadereffect.html">ShaderEffect</a> items inside <a href="qml-qtquick-shadereffectsource.html">ShaderEffectSource</a> items set as property values.</p><p>This property was introduced in QtQuick 2.8.</p>
<p><b>See also </b><a href="qml-qtquick-graphicsinfo.html#shaderType-prop">shaderType</a> and <a href="qml-qtquick-graphicsinfo.html#shaderSourceType-prop">shaderSourceType</a>.</p>
</div></div><!-- @@@shaderCompilationType -->
<br/>
<!-- $$$shaderSourceType -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="shaderSourceType-prop">
<td class="tblQmlPropNode"><p>
<a name="shaderSourceType-prop"></a><span class="name">shaderSourceType</span> : <span class="type">enumeration</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property contains a bitmask of the supported ways of providing shader sources.</p>
<ul>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.ShaderSourceString</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.ShaderSourceFile</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.ShaderByteCode</li>
</ul>
<p>With OpenGL the value is <a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.ShaderSourceString, which corresponds to the traditional way of inlining GLSL source code into QML. Other, non-OpenGL Qt Quick backends may however decide not to support inlined shader sources, or even shader sources at all. In this case shaders are expected to be pre-compiled into formats like SPIR-V or D3D shader bytecode.</p>
<p><b>Note: </b>The value is only up-to-date once the item is associated with a window. Bindings relying on the value have to keep this in mind since the value may change from <code>0</code> to the actual bitmask after component initialization is complete. This is particularly relevant for <a href="qml-qtquick-shadereffect.html">ShaderEffect</a> items inside <a href="qml-qtquick-shadereffectsource.html">ShaderEffectSource</a> items set as property values.</p><p>This property was introduced in QtQuick 2.8.</p>
<p><b>See also </b><a href="qml-qtquick-graphicsinfo.html#shaderType-prop">shaderType</a> and <a href="qml-qtquick-graphicsinfo.html#shaderCompilationType-prop">shaderCompilationType</a>.</p>
</div></div><!-- @@@shaderSourceType -->
<br/>
<!-- $$$shaderType -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="shaderType-prop">
<td class="tblQmlPropNode"><p>
<a name="shaderType-prop"></a><span class="name">shaderType</span> : <span class="type">enumeration</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property contains the shading language supported by the Qt Quick backend the application is using.</p>
<ul>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.UnknownShadingLanguage - Not yet known due to no window and scenegraph associated</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.GLSL - GLSL or GLSL ES</li>
<li><a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.HLSL - HLSL</li>
</ul>
<p><b>Note: </b>The value is only up-to-date once the item is associated with a window. Bindings relying on the value have to keep this in mind since the value may change from <a href="qml-qtquick-graphicsinfo.html">GraphicsInfo</a>.UnknownShadingLanguage to the actual value after component initialization is complete. This is particularly relevant for <a href="qml-qtquick-shadereffect.html">ShaderEffect</a> items inside <a href="qml-qtquick-shadereffectsource.html">ShaderEffectSource</a> items set as property values.</p><p>This property was introduced in QtQuick 2.8.</p>
<p><b>See also </b><a href="qml-qtquick-graphicsinfo.html#shaderCompilationType-prop">shaderCompilationType</a> and <a href="qml-qtquick-graphicsinfo.html#shaderSourceType-prop">shaderSourceType</a>.</p>
</div></div><!-- @@@shaderType -->
<br/>
</div>
</div>
</div>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
of their respective owners. </p>
</div>
</body>
</html>
distrib
>
Mageia
>
7
>
i586
>
media
>
core-updates
>
by-pkgid
>
6e2327ca1c896c6d674ae53117299f21
>
files
>
939
