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authorJocelyn Turcotte <jocelyn.turcotte@digia.com>2014-07-01 19:19:56 +0200
committerJocelyn Turcotte <jocelyn.turcotte@digia.com>2014-08-01 13:49:46 +0200
commit78923902089d0a70c096e5f47f42e24fbcd4fa56 (patch)
treecdf04742cba0cf0ae956129e80996f9eef51c070 /examples/quick/scenegraph
parent6e70fa5ee8d0433dbb0d42378bce10db18b05fab (diff)
Expose the scene graph publically through a QSGEngine class
This change wraps QSGRenderContext and QSGContext in a new QSGEngine class, and expose a public interface of QSGRenderer through a QSGAbstractRenderer to make it usable on a standalone window or FBO. Change-Id: I2d41187472424f5ea64650a006bcd61f2711f6b9 Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Diffstat (limited to 'examples/quick/scenegraph')
-rw-r--r--examples/quick/scenegraph/scenegraph.pro1
-rw-r--r--examples/quick/scenegraph/sgengine/face-smile.pngbin0 -> 15408 bytes
-rw-r--r--examples/quick/scenegraph/sgengine/main.cpp52
-rw-r--r--examples/quick/scenegraph/sgengine/sgengine.pro11
-rw-r--r--examples/quick/scenegraph/sgengine/sgengine.qrc5
-rw-r--r--examples/quick/scenegraph/sgengine/window.cpp241
-rw-r--r--examples/quick/scenegraph/sgengine/window.h85
7 files changed, 395 insertions, 0 deletions
diff --git a/examples/quick/scenegraph/scenegraph.pro b/examples/quick/scenegraph/scenegraph.pro
index 4354954445..85ae25907a 100644
--- a/examples/quick/scenegraph/scenegraph.pro
+++ b/examples/quick/scenegraph/scenegraph.pro
@@ -2,6 +2,7 @@ TEMPLATE = subdirs
SUBDIRS += \
customgeometry \
openglunderqml \
+ sgengine \
simplematerial \
textureinsgnode \
textureinthread \
diff --git a/examples/quick/scenegraph/sgengine/face-smile.png b/examples/quick/scenegraph/sgengine/face-smile.png
new file mode 100644
index 0000000000..3d66d72578
--- /dev/null
+++ b/examples/quick/scenegraph/sgengine/face-smile.png
Binary files differ
diff --git a/examples/quick/scenegraph/sgengine/main.cpp b/examples/quick/scenegraph/sgengine/main.cpp
new file mode 100644
index 0000000000..9a9450710b
--- /dev/null
+++ b/examples/quick/scenegraph/sgengine/main.cpp
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "window.h"
+#include <QGuiApplication>
+
+int main(int argc, char *argv[])
+{
+ QGuiApplication app(argc, argv);
+
+ Window window;
+ window.show();
+
+ return app.exec();
+}
diff --git a/examples/quick/scenegraph/sgengine/sgengine.pro b/examples/quick/scenegraph/sgengine/sgengine.pro
new file mode 100644
index 0000000000..c6507a4982
--- /dev/null
+++ b/examples/quick/scenegraph/sgengine/sgengine.pro
@@ -0,0 +1,11 @@
+QT += quick
+
+HEADERS += window.h
+SOURCES += window.cpp main.cpp
+RESOURCES += \
+ sgengine.qrc \
+ ../../shared/shared.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/quick/scenegraph/sgengine
+INSTALLS += target
diff --git a/examples/quick/scenegraph/sgengine/sgengine.qrc b/examples/quick/scenegraph/sgengine/sgengine.qrc
new file mode 100644
index 0000000000..5d55bcfb6f
--- /dev/null
+++ b/examples/quick/scenegraph/sgengine/sgengine.qrc
@@ -0,0 +1,5 @@
+<RCC>
+ <qresource prefix="/scenegraph/sgengine">
+ <file>face-smile.png</file>
+ </qresource>
+</RCC>
diff --git a/examples/quick/scenegraph/sgengine/window.cpp b/examples/quick/scenegraph/sgengine/window.cpp
new file mode 100644
index 0000000000..9af4029165
--- /dev/null
+++ b/examples/quick/scenegraph/sgengine/window.cpp
@@ -0,0 +1,241 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "window.h"
+
+#include <QOpenGLContext>
+#include <QSGAbstractRenderer>
+#include <QSGEngine>
+#include <QSGSimpleTextureNode>
+#include <QSGTransformNode>
+#include <QScreen>
+#include <QVariantAnimation>
+
+class Item {
+public:
+ Item(QSGNode *parentNode, QSGTexture *texture, const QPointF &fromPos, const QPointF &toPos) {
+ textureNode = new QSGSimpleTextureNode;
+ textureNode->setRect(QRect(QPoint(), texture->textureSize()));
+ textureNode->setTexture(texture);
+
+ transformNode = new QSGTransformNode;
+ transformNode->setFlag(QSGNode::OwnedByParent, false);
+ transformNode->appendChildNode(textureNode);
+ parentNode->appendChildNode(transformNode);
+
+ int duration = qrand() / float(RAND_MAX) * 400 + 800;
+ rotAnimation.setStartValue(qrand() / float(RAND_MAX) * 720 - 180);
+ rotAnimation.setEndValue(qrand() / float(RAND_MAX) * 720 - 180);
+ rotAnimation.setDuration(duration);
+ rotAnimation.start();
+
+ posAnimation.setStartValue(fromPos);
+ posAnimation.setEndValue(toPos);
+ posAnimation.setDuration(duration);
+ posAnimation.start();
+ }
+
+ ~Item() {
+ delete transformNode;
+ }
+
+ bool isDone() const { return posAnimation.state() != QAbstractAnimation::Running; }
+
+ void sync() {
+ QPointF currentPos = posAnimation.currentValue().toPointF();
+ QPointF center = textureNode->rect().center();
+ QMatrix4x4 m;
+ m.translate(currentPos.x(), currentPos.y());
+ m.translate(center.x(), center.y());
+ m.rotate(rotAnimation.currentValue().toFloat(), 0, 0, 1);
+ m.translate(-center.x(), -center.y());
+ transformNode->setMatrix(m);
+ }
+
+private:
+ QSGTransformNode *transformNode;
+ QSGSimpleTextureNode *textureNode;
+ QVariantAnimation posAnimation;
+ QVariantAnimation rotAnimation;
+};
+
+Window::Window()
+ : m_initialized(false)
+ , m_context(new QOpenGLContext)
+ , m_sgEngine(new QSGEngine)
+ , m_sgRootNode(new QSGRootNode)
+{
+ setSurfaceType(QWindow::OpenGLSurface);
+ QRect g(0, 0, 640, 480);
+ g.moveCenter(screen()->geometry().center());
+ setGeometry(g);
+ setTitle(QStringLiteral("Click me!"));
+
+ QSurfaceFormat format;
+ format.setDepthBufferSize(16);
+ setFormat(format);
+ m_context->setFormat(format);
+ m_context->create();
+
+ m_animationDriver.install();
+ connect(&m_animationDriver, &QAnimationDriver::started, this, &Window::update);
+}
+
+Window::~Window()
+{
+}
+
+void Window::timerEvent(QTimerEvent *e)
+{
+ if (e->timerId() == m_updateTimer.timerId()) {
+ m_updateTimer.stop();
+
+ if (!m_context->makeCurrent(this))
+ return;
+
+ if (!m_initialized)
+ initialize();
+
+ sync();
+ render();
+
+ if (m_animationDriver.isRunning()) {
+ m_animationDriver.advance();
+ update();
+ }
+ } else
+ QWindow::timerEvent(e);
+}
+
+void Window::exposeEvent(QExposeEvent *)
+{
+ if (isExposed())
+ update();
+ else
+ invalidate();
+}
+
+void Window::mousePressEvent(QMouseEvent *)
+{
+ addItems();
+}
+
+void Window::keyPressEvent(QKeyEvent *)
+{
+ addItems();
+}
+
+void Window::addItems()
+{
+ if (!m_initialized)
+ return;
+
+ QSGTexture *textures[] = { m_smileTexture.data(), m_qtTexture.data() };
+ for (int i = 0; i < 50; ++i) {
+ QSGTexture *tex = textures[i%2];
+ QPointF fromPos(-tex->textureSize().width(), qrand() / float(RAND_MAX) * (height() - tex->textureSize().height()));
+ QPointF toPos(width(), qrand() / float(RAND_MAX) * height() * 1.5 - height() * 0.25);
+ m_items.append(QSharedPointer<Item>(new Item(m_sgRootNode.data(), tex, fromPos, toPos)));
+ }
+ update();
+}
+
+void Window::update()
+{
+ if (!m_updateTimer.isActive())
+ m_updateTimer.start(0, this);
+}
+
+void Window::sync()
+{
+ QList<QSharedPointer<Item> > validItems;
+ foreach (QSharedPointer<Item> item, m_items) {
+ if (!item->isDone()) {
+ validItems.append(item);
+ item->sync();
+ }
+ }
+ m_items.swap(validItems);
+}
+
+void Window::render()
+{
+ m_sgRenderer->setDeviceRect(size());
+ m_sgRenderer->setViewportRect(size());
+ m_sgRenderer->setProjectionMatrixToRect(QRectF(QPointF(), size()));
+ m_sgRenderer->renderScene();
+
+ m_context->swapBuffers(this);
+}
+
+void Window::initialize()
+{
+ m_sgEngine->initialize(m_context.data());
+ m_sgRenderer.reset(m_sgEngine->createRenderer());
+ m_sgRenderer->setRootNode(m_sgRootNode.data());
+ m_sgRenderer->setClearColor(QColor(32, 32, 32));
+
+ // With QSGEngine::createTextureFromId
+ GLuint glTexture;
+ glGenTextures(1, &glTexture);
+ glBindTexture(GL_TEXTURE_2D, glTexture);
+ QImage smile = QImage(":/scenegraph/sgengine/face-smile.png").scaled(48, 48, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+ smile = smile.convertToFormat(QImage::Format_RGBA8888_Premultiplied);
+ Q_ASSERT(!smile.isNull());
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, smile.width(), smile.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, smile.constBits());
+ m_smileTexture.reset(m_sgEngine->createTextureFromId(glTexture, smile.size(), QFlag(QSGEngine::TextureOwnsGLTexture | QSGEngine::TextureHasAlphaChannel)));
+
+ // With QSGEngine::createTextureFromImage
+ QImage qtLogo = QImage(":/shared/images/qt-logo.png").scaled(48, 48, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+ Q_ASSERT(!qtLogo.isNull());
+ m_qtTexture.reset(m_sgEngine->createTextureFromImage(qtLogo));
+ m_initialized = true;
+}
+
+void Window::invalidate()
+{
+ m_updateTimer.stop();
+ m_items.clear();
+ m_smileTexture.reset();
+ m_qtTexture.reset();
+ m_sgRenderer.reset();
+ m_sgEngine->invalidate();
+ m_initialized = false;
+}
diff --git a/examples/quick/scenegraph/sgengine/window.h b/examples/quick/scenegraph/sgengine/window.h
new file mode 100644
index 0000000000..2b239ea430
--- /dev/null
+++ b/examples/quick/scenegraph/sgengine/window.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QWindow>
+
+#include <QAnimationDriver>
+#include <QBasicTimer>
+#include <QSharedPointer>
+
+class Item;
+QT_FORWARD_DECLARE_CLASS(QSGAbstractRenderer)
+QT_FORWARD_DECLARE_CLASS(QSGEngine)
+QT_FORWARD_DECLARE_CLASS(QSGRootNode)
+QT_FORWARD_DECLARE_CLASS(QSGTexture)
+
+class Window : public QWindow
+{
+ Q_OBJECT
+public:
+ Window();
+ ~Window();
+
+ void addItems();
+ void update();
+
+private:
+ void timerEvent(QTimerEvent *);
+ void exposeEvent(QExposeEvent *);
+ void mousePressEvent(QMouseEvent *);
+ void keyPressEvent(QKeyEvent *);
+
+ void sync();
+ void render();
+ void initialize();
+ void invalidate();
+
+ bool m_initialized;
+ QScopedPointer<QOpenGLContext> m_context;
+ QScopedPointer<QSGEngine> m_sgEngine;
+ QScopedPointer<QSGRootNode> m_sgRootNode;
+ QScopedPointer<QSGAbstractRenderer> m_sgRenderer;
+ QScopedPointer<QSGTexture> m_smileTexture;
+ QScopedPointer<QSGTexture> m_qtTexture;
+ QList<QSharedPointer<Item> > m_items;
+
+ QBasicTimer m_updateTimer;
+ QAnimationDriver m_animationDriver;
+};