diff options
Diffstat (limited to 'src/gui/doc/snippets/code/src_gui_opengl_qopenglfunctions.cpp')
| -rw-r--r-- | src/gui/doc/snippets/code/src_gui_opengl_qopenglfunctions.cpp | 168 |
1 files changed, 71 insertions, 97 deletions
diff --git a/src/gui/doc/snippets/code/src_gui_opengl_qopenglfunctions.cpp b/src/gui/doc/snippets/code/src_gui_opengl_qopenglfunctions.cpp index e4255107d3..14531446a1 100644 --- a/src/gui/doc/snippets/code/src_gui_opengl_qopenglfunctions.cpp +++ b/src/gui/doc/snippets/code/src_gui_opengl_qopenglfunctions.cpp @@ -1,112 +1,86 @@ -/**************************************************************************** -** -** Copyright (C) 2018 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2018 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause +#include <QOpenGLFunctions> +#include <QtOpenGL/QOpenGLWindow> + +#include <QSurface> +#include <QWidget> +#include <QWindow> + +namespace src_gui_opengl_qopenglfunctions { //! [0] - class MyGLWindow : public QWindow, protected QOpenGLFunctions - { - Q_OBJECT - public: - explicit MyGLWindow(QScreen *screen = nullptr); - - protected: - void initializeGL(); - void paintGL(); - - QOpenGLContext *m_context; - }; - - MyGLWindow(QScreen *screen) - : QWindow(screen), QOpenGLWidget(parent) - { - setSurfaceType(OpenGLSurface); - create(); - - // Create an OpenGL context - m_context = new QOpenGLContext; - m_context->create(); - - // Setup scene and render it - initializeGL(); - paintGL(); - } - - void MyGLWindow::initializeGL() - { - m_context->makeCurrent(this); - initializeOpenGLFunctions(); - } +class MyGLWindow : public QWindow, protected QOpenGLFunctions +{ + Q_OBJECT +public: + explicit MyGLWindow(QScreen *screen = nullptr); + +protected: + void initializeGL(); + void paintGL(); + + QOpenGLContext *m_context; +}; + +MyGLWindow::MyGLWindow(QScreen *screen) + : QWindow(screen) +{ + setSurfaceType(OpenGLSurface); + create(); + + // Create an OpenGL context + m_context = new QOpenGLContext; + m_context->create(); + + // Setup scene and render it + initializeGL(); + paintGL(); +}; + +void MyGLWindow::initializeGL() +{ + m_context->makeCurrent(this); + initializeOpenGLFunctions(); +} //! [0] + +int textureId = 0; + //! [1] - void MyGLWindow::paintGL() - { - m_context->makeCurrent(this); - glActiveTexture(GL_TEXTURE1); - glBindTexture(GL_TEXTURE_2D, textureId); - ... - m_context->swapBuffers(this); - m_context->doneCurrent(); - } +void MyGLWindow::paintGL() +{ + m_context->makeCurrent(this); + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, textureId); + // ... + m_context->swapBuffers(this); + m_context->doneCurrent(); +} //! [1] + +void wrapper0() { //! [2] - QOpenGLFunctions glFuncs(QOpenGLContext::currentContext()); - glFuncs.glActiveTexture(GL_TEXTURE1); +QOpenGLFunctions glFuncs(QOpenGLContext::currentContext()); +glFuncs.glActiveTexture(GL_TEXTURE1); //! [2] +} // wrapper0 + +void wrapper1() { //! [3] - QOpenGLFunctions *glFuncs = QOpenGLContext::currentContext()->functions(); - glFuncs->glActiveTexture(GL_TEXTURE1); +QOpenGLFunctions *glFuncs = QOpenGLContext::currentContext()->functions(); +glFuncs->glActiveTexture(GL_TEXTURE1); //! [3] + //! [4] - QOpenGLFunctions funcs(QOpenGLContext::currentContext()); - bool npot = funcs.hasOpenGLFeature(QOpenGLFunctions::NPOTTextures); +QOpenGLFunctions funcs(QOpenGLContext::currentContext()); +bool npot = funcs.hasOpenGLFeature(QOpenGLFunctions::NPOTTextures); //! [4] + +Q_UNUSED(npot); +} // wrapper1 +} // src_gui_opengl_qopenglfunctions |