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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCanvas3D module of the Qt Toolkit.
**
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**
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/*!
\example quickitemtexture
\since QtCanvas3D 1.0
\title Qt Quick Item as Texture Example
\ingroup qtcanvas3d-examples
\brief A simple cube with a Qt Quick item as a texture
The Qt Quick Item as Texture example shows how to use other Qt Quick items as
a texture source for Qt Canvas3D textures.
\image quickitemtexture-example.png
\section1 Using Qt Quick Item as a Texture
First we create a \l Rectangle with a label that displays the current frame rate and rotation
values of the cube:
\snippet quickitemtexture/qml/quickitemtexture/main.qml 0
We want to use the above \l Rectangle as the texture on our 3D cube. As a \l Rectangle item
doesn't implement QQuickItem::textureProvider() by itself, we make it layered by setting the
\c{layer.enabled} property to \c{true}.
To create a Canvas3DTexture out of our layered \l{Rectangle}, we create a
\l{Canvas3DTextureProvider}{QTCANVAS3D_texture_provider} extension and the texture
in the \c initializeGL() function in our JavaScript implementation:
\snippet quickitemtexture/qml/quickitemtexture/quickitemtexture.js 0
Once the \c cubeTexture item is created, it can be used like any other texture item in
the JavaScript.
\note The method of creating the texture from a Qt Quick item differs from how one would create
texture from an HTML item in WebGL API. Textures created with
\l{Canvas3DTextureProvider}{QTCANVAS3D_texture_provider} extension
support automatic live updates, without having to call textureImage2D each frame
to re-upload fresh texture data from the item.
*/
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