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-rw-r--r--examples/qtquick/openglunderqml/main.cpp60
-rw-r--r--examples/qtquick/openglunderqml/main.qml78
-rw-r--r--examples/qtquick/openglunderqml/openglunderqml.pro6
-rw-r--r--examples/qtquick/openglunderqml/squircle.cpp123
-rw-r--r--examples/qtquick/openglunderqml/squircle.h76
5 files changed, 343 insertions, 0 deletions
diff --git a/examples/qtquick/openglunderqml/main.cpp b/examples/qtquick/openglunderqml/main.cpp
new file mode 100644
index 0000000000..3b682deaec
--- /dev/null
+++ b/examples/qtquick/openglunderqml/main.cpp
@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QGuiApplication>
+
+#include <QtQuick/QQuickView>
+
+#include "squircle.h"
+
+int main(int argc, char **argv)
+{
+ QGuiApplication app(argc, argv);
+
+ qmlRegisterType<Squircle>("QtQuick", 2, 0, "Squircle");
+
+ QQuickView view;
+ view.setSource(QUrl("main.qml"));
+ view.show();
+
+ return app.exec();
+
+}
diff --git a/examples/qtquick/openglunderqml/main.qml b/examples/qtquick/openglunderqml/main.qml
new file mode 100644
index 0000000000..1485cbbdb8
--- /dev/null
+++ b/examples/qtquick/openglunderqml/main.qml
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+Item {
+
+ width: 400
+ height: 300
+
+ Squircle {
+ SequentialAnimation on t {
+ NumberAnimation { to: 1; duration: 2500; easing.type: Easing.InQuad }
+ NumberAnimation { to: 0; duration: 2500; easing.type: Easing.OutQuad }
+ loops: Animation.Infinite
+ running: true
+ }
+ }
+
+ Rectangle {
+ color: Qt.rgba(1, 1, 1, 0.8);
+ radius: 10
+ border.width: 1
+ border.color: "white"
+ anchors.fill: label
+ anchors.margins: -10
+ }
+
+ Text {
+ id: label
+ color: "black"
+ wrapMode: Text.WordWrap
+ text: "The background here is a squircle rendered with raw OpenGL using the 'beforeRender()' signal in QQuickCanvas. This text label and its border is rendered using QML"
+ anchors.right: parent.right
+ anchors.left: parent.left
+ anchors.bottom: parent.bottom
+ anchors.margins: 20
+ }
+
+}
diff --git a/examples/qtquick/openglunderqml/openglunderqml.pro b/examples/qtquick/openglunderqml/openglunderqml.pro
new file mode 100644
index 0000000000..117ad0c33e
--- /dev/null
+++ b/examples/qtquick/openglunderqml/openglunderqml.pro
@@ -0,0 +1,6 @@
+QT += declarative quick
+
+HEADERS += squircle.h
+SOURCES += squircle.cpp main.cpp
+
+OTHER_FILES += main.qml
diff --git a/examples/qtquick/openglunderqml/squircle.cpp b/examples/qtquick/openglunderqml/squircle.cpp
new file mode 100644
index 0000000000..b56f0baaf6
--- /dev/null
+++ b/examples/qtquick/openglunderqml/squircle.cpp
@@ -0,0 +1,123 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "squircle.h"
+
+#include <QtQuick/qsgengine.h>
+#include <QtQuick/qquickcanvas.h>
+#include <QOpenGLShaderProgram>
+
+Squircle::Squircle()
+ : m_program(0)
+{
+ setFlag(ItemHasContents);
+}
+
+void Squircle::itemChange(ItemChange change, const ItemChangeData &)
+{
+ // The ItemSceneChange event is sent when we are first attached to a canvas.
+ if (change == ItemSceneChange) {
+ QQuickCanvas *c = canvas();
+
+ // Connect our the beforeRendering signal to our paint function.
+ // Since this call is executed on the rendering thread it must be
+ // a Qt::DirectConnection
+ connect(c, SIGNAL(beforeRendering()), this, SLOT(paint()), Qt::DirectConnection);
+
+ // If we allow QML to do the clearing, they would clear what we paint
+ // and nothing would show.
+ c->setClearBeforeRendering(false);
+ }
+}
+
+
+void Squircle::paint()
+{
+ if (!m_program) {
+ m_program = new QOpenGLShaderProgram();
+ m_program->addShaderFromSourceCode(QOpenGLShader::Vertex,
+ "attribute highp vec4 vertices;"
+ "varying highp vec2 coords;"
+ "void main() {"
+ " gl_Position = vertices;"
+ " coords = vertices.xy;"
+ "}");
+ m_program->addShaderFromSourceCode(QOpenGLShader::Fragment,
+ "uniform lowp float t;"
+ "varying highp vec2 coords;"
+ "void main() {"
+ " lowp float i = 1. - (pow(coords.x, 4.) + pow(coords.y, 4.));"
+ " i = smoothstep(t - 0.3, t + 0.3, i);"
+ " gl_FragColor = vec4(coords / 2. + .5, i, i);"
+ "}");
+
+ m_program->bindAttributeLocation("vertices", 0);
+ m_program->link();
+ }
+
+ m_program->bind();
+
+ m_program->enableAttributeArray(0);
+
+ float values[] = {
+ -1, -1,
+ 1, -1,
+ -1, 1,
+ 1, 1
+ };
+ m_program->setAttributeArray(0, GL_FLOAT, values, 2);
+ m_program->setUniformValue("t", (float) m_t);
+
+ glDisable(GL_DEPTH_TEST);
+
+ glClearColor(0, 0, 0, 1);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+ m_program->disableAttributeArray(0);
+ m_program->release();
+}
+
+
diff --git a/examples/qtquick/openglunderqml/squircle.h b/examples/qtquick/openglunderqml/squircle.h
new file mode 100644
index 0000000000..283131a662
--- /dev/null
+++ b/examples/qtquick/openglunderqml/squircle.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SQUIRCLE_H
+#define SQUIRCLE_H
+
+#include <QtQuick/QQuickItem>
+#include <QtGui/QOpenGLShaderProgram>
+
+class Squircle : public QQuickItem
+{
+ Q_OBJECT
+
+ Q_PROPERTY(qreal t READ t WRITE setT NOTIFY tChanged)
+
+public:
+ Squircle();
+
+ qreal t() const { return m_t; }
+ void setT(qreal t) { m_t = t; emit tChanged(); }
+
+ void itemChange(ItemChange change, const ItemChangeData &);
+
+signals:
+ void tChanged();
+
+public slots:
+ void paint();
+
+private:
+ QOpenGLShaderProgram *m_program;
+
+ qreal m_t;
+ bool m_render_under;
+ bool m_render_over;
+};
+
+#endif // SQUIRCLE_H
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