summaryrefslogtreecommitdiffstats
path: root/examples/opengl/samplebuffers
diff options
context:
space:
mode:
Diffstat (limited to 'examples/opengl/samplebuffers')
-rw-r--r--examples/opengl/samplebuffers/glwidget.cpp165
-rw-r--r--examples/opengl/samplebuffers/glwidget.h62
-rw-r--r--examples/opengl/samplebuffers/main.cpp72
-rw-r--r--examples/opengl/samplebuffers/samplebuffers.pro10
4 files changed, 309 insertions, 0 deletions
diff --git a/examples/opengl/samplebuffers/glwidget.cpp b/examples/opengl/samplebuffers/glwidget.cpp
new file mode 100644
index 0000000..381ff95
--- /dev/null
+++ b/examples/opengl/samplebuffers/glwidget.cpp
@@ -0,0 +1,165 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "glwidget.h"
+#include <math.h>
+
+#ifndef GL_MULTISAMPLE
+#define GL_MULTISAMPLE 0x809D
+#endif
+
+GLWidget::GLWidget(QWidget *parent)
+ : QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
+{
+ startTimer(40);
+ setWindowTitle(tr("Sample Buffers"));
+}
+
+void GLWidget::initializeGL()
+{
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-.5, .5, .5, -.5, -1000, 1000);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+
+ makeObject();
+}
+
+void GLWidget::resizeGL(int w, int h)
+{
+ glViewport(0, 0, w, h);
+}
+
+void GLWidget::paintGL()
+{
+ static float rot = 0.0;
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glEnable(GL_MULTISAMPLE);
+ glTranslatef(-0.25f, -0.10f, 0.0f);
+ glScalef(0.75f, 1.15f, 0.0f);
+ glRotatef(rot, 0.0f, 0.f, 1.0f);
+ glCallList(list);
+ glPopMatrix();
+
+ glPushMatrix();
+ glDisable(GL_MULTISAMPLE);
+ glTranslatef(0.25f, -0.10f, 0.0f);
+ glScalef(0.75f, 1.15f, 0.0f);
+ glRotatef(rot, 0.0f, 0.0f, 1.0f);
+ glCallList(list);
+ glPopMatrix();
+
+ rot += 0.2f;
+
+ qglColor(Qt::black);
+ renderText(-0.35, 0.4, 0.0, "Multisampling enabled");
+ renderText(0.15, 0.4, 0.0, "Multisampling disabled");
+}
+
+void GLWidget::timerEvent(QTimerEvent *)
+{
+ update();
+}
+
+void GLWidget::makeObject()
+{
+ QColor trolltechGreen(QColor::fromCmykF(0.40, 0.0, 1.0, 0.0));
+ const double Pi = 3.14159265358979323846;
+ const int NumSectors = 15;
+ GLdouble x1 = +0.06;
+ GLdouble y1 = -0.14;
+ GLdouble x2 = +0.14;
+ GLdouble y2 = -0.06;
+ GLdouble x3 = +0.08;
+ GLdouble y3 = +0.00;
+ GLdouble x4 = +0.30;
+ GLdouble y4 = +0.22;
+
+ list = glGenLists(1);
+ glNewList(list, GL_COMPILE);
+ {
+ for (int i = 0; i < NumSectors; ++i) {
+ double angle1 = (i * 2 * Pi) / NumSectors;
+ GLdouble x5 = 0.30 * sin(angle1);
+ GLdouble y5 = 0.30 * cos(angle1);
+ GLdouble x6 = 0.20 * sin(angle1);
+ GLdouble y6 = 0.20 * cos(angle1);
+
+ double angle2 = ((i + 1) * 2 * Pi) / NumSectors;
+ GLdouble x7 = 0.20 * sin(angle2);
+ GLdouble y7 = 0.20 * cos(angle2);
+ GLdouble x8 = 0.30 * sin(angle2);
+ GLdouble y8 = 0.30 * cos(angle2);
+
+ qglColor(trolltechGreen);
+ quad(GL_QUADS, x5, y5, x6, y6, x7, y7, x8, y8);
+ qglColor(Qt::black);
+ quad(GL_LINE_LOOP, x5, y5, x6, y6, x7, y7, x8, y8);
+ }
+
+ qglColor(trolltechGreen);
+ quad(GL_QUADS, x1, y1, x2, y2, y2, x2, y1, x1);
+ quad(GL_QUADS, x3, y3, x4, y4, y4, x4, y3, x3);
+
+ qglColor(Qt::black);
+ quad(GL_LINE_LOOP, x1, y1, x2, y2, y2, x2, y1, x1);
+ quad(GL_LINE_LOOP, x3, y3, x4, y4, y4, x4, y3, x3);
+ }
+ glEndList();
+}
+
+void GLWidget::quad(GLenum primitive, GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2,
+ GLdouble x3, GLdouble y3, GLdouble x4, GLdouble y4)
+{
+ glBegin(primitive);
+ {
+ glVertex2d(x1, y1);
+ glVertex2d(x2, y2);
+ glVertex2d(x3, y3);
+ glVertex2d(x4, y4);
+ }
+ glEnd();
+}
diff --git a/examples/opengl/samplebuffers/glwidget.h b/examples/opengl/samplebuffers/glwidget.h
new file mode 100644
index 0000000..dee739e
--- /dev/null
+++ b/examples/opengl/samplebuffers/glwidget.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtOpenGL>
+
+class GLWidget : public QGLWidget
+{
+public:
+ GLWidget(QWidget *parent);
+
+protected:
+ void initializeGL();
+ void resizeGL(int w, int h);
+ void paintGL();
+ void timerEvent(QTimerEvent *);
+
+ void makeObject();
+ void quad(GLenum primitive, GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2,
+ GLdouble x3, GLdouble y3, GLdouble x4, GLdouble y4);
+
+private:
+ GLuint list;
+};
+
diff --git a/examples/opengl/samplebuffers/main.cpp b/examples/opengl/samplebuffers/main.cpp
new file mode 100644
index 0000000..88a37b4
--- /dev/null
+++ b/examples/opengl/samplebuffers/main.cpp
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui/QApplication>
+#include <QtGui/QMessageBox>
+#include "glwidget.h"
+
+int main(int argc, char **argv)
+{
+ QApplication a(argc, argv);
+
+ QGLFormat f = QGLFormat::defaultFormat();
+ f.setSampleBuffers(true);
+ QGLFormat::setDefaultFormat(f);
+ if (!QGLFormat::hasOpenGL()) {
+ QMessageBox::information(0, "OpenGL samplebuffers",
+ "This system does not support OpenGL.");
+ return 0;
+ }
+
+ GLWidget widget(0);
+
+ if (!widget.format().sampleBuffers()) {
+ QMessageBox::information(0, "OpenGL samplebuffers",
+ "This system does not have sample buffer support.");
+ return 0;
+ }
+
+ widget.resize(640, 480);
+ widget.show();
+
+ return a.exec();
+}
+
diff --git a/examples/opengl/samplebuffers/samplebuffers.pro b/examples/opengl/samplebuffers/samplebuffers.pro
new file mode 100644
index 0000000..9eb5f58
--- /dev/null
+++ b/examples/opengl/samplebuffers/samplebuffers.pro
@@ -0,0 +1,10 @@
+HEADERS += glwidget.h
+SOURCES += glwidget.cpp main.cpp
+
+QT += opengl
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/opengl/samplebuffers
+sources.files = $$SOURCES $$HEADERS samplebuffers.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/opengl/samplebuffers
+INSTALLS += target sources
generated by cgit v0.12 at 2024-11-18 10:53:45 (GMT)