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diff --git a/examples/opengl/legacy/pbuffers2/glwidget.cpp b/examples/opengl/legacy/pbuffers2/glwidget.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QtGui/QImage>
-#include <qmath.h>
-#include "glwidget.h"
-
-#ifndef GL_MULTISAMPLE
-#define GL_MULTISAMPLE 0x809D
-#endif
-
-GLWidget::GLWidget(QWidget *parent)
- : QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
-{
- setWindowTitle(tr("OpenGL pbuffers 2"));
-
- pbuffer = new QGLPixelBuffer(1024, 1024, format(), this);
-
- rot_x = rot_y = rot_z = 0.0f;
- scale = 0.1f;
- anim = new QTimeLine(750, this);
- anim->setUpdateInterval(20);
- connect(anim, SIGNAL(valueChanged(qreal)), SLOT(animate(qreal)));
- connect(anim, SIGNAL(finished()), SLOT(animFinished()));
-
- svg_renderer = new QSvgRenderer(QLatin1String(":/res/bubbles.svg"), this);
- connect(svg_renderer, SIGNAL(repaintNeeded()), this, SLOT(draw()));
-
- logo = QImage(":/res/designer.png");
- logo = logo.convertToFormat(QImage::Format_ARGB32);
-
- makeCurrent(); // need a current context to create the display list
- tile_list = glGenLists(1);
- glNewList(tile_list, GL_COMPILE);
- glBegin(GL_QUADS);
- {
- glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
- glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
- glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
- glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
-
- glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
- glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
- glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
- glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
-
- glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
- glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
- glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
- glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
-
- glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
- glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
- glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
- glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
-
- glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
- glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
- glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
- glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
-
- glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
- glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
- glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
- glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
-}
- glEnd();
- glEndList();
-
- wave = new GLfloat[logo.width()*logo.height()];
- memset(wave, 0, logo.width()*logo.height());
- startTimer(30); // wave timer
-
- pbuffer->makeCurrent();
- dynamicTexture = pbuffer->generateDynamicTexture();
-
- // bind the dynamic texture to the pbuffer - this is a no-op under X11
- hasDynamicTextureUpdate = pbuffer->bindToDynamicTexture(dynamicTexture);
-}
-
-GLWidget::~GLWidget()
-{
- delete[] wave;
- glDeleteLists(tile_list, 1);
- pbuffer->releaseFromDynamicTexture();
- glDeleteTextures(1, &dynamicTexture);
- delete pbuffer;
-}
-
-void GLWidget::paintEvent(QPaintEvent *)
-{
- draw();
-}
-
-void GLWidget::draw()
-{
- QPainter p(this); // used for text overlay
-
- // save the GL state set for QPainter
- p.beginNativePainting();
- saveGLState();
-
- // render the 'bubbles.svg' file into our pbuffer
- QPainter pbuffer_painter(pbuffer);
- svg_renderer->render(&pbuffer_painter);
- pbuffer_painter.end();
- glFlush();
-
- if (!hasDynamicTextureUpdate)
- pbuffer->updateDynamicTexture(dynamicTexture);
-
- makeCurrent();
- // draw into the GL widget
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustum(-1, 1, -1, 1, 10, 100);
- glTranslatef(0.0f, 0.0f, -15.0f);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glViewport(0, 0, width() * devicePixelRatio(), height() * devicePixelRatio());
-
- glBindTexture(GL_TEXTURE_2D, dynamicTexture);
- glEnable(GL_TEXTURE_2D);
- glEnable(GL_MULTISAMPLE);
- glEnable(GL_CULL_FACE);
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
- // draw background
- glPushMatrix();
- glScalef(1.7f, 1.7f, 1.7f);
- glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
- glCallList(tile_list);
- glPopMatrix();
-
- const int w = logo.width();
- const int h = logo.height();
-
- glRotatef(rot_x, 1.0f, 0.0f, 0.0f);
- glRotatef(rot_y, 0.0f, 1.0f, 0.0f);
- glRotatef(rot_z, 0.0f, 0.0f, 1.0f);
- glScalef(scale/w, scale/w, scale/w);
-
- glDepthFunc(GL_LESS);
- glEnable(GL_DEPTH_TEST);
-
- // draw the Qt icon
- glTranslatef(-w+1, -h+1, 0.0f);
- for (int y=h-1; y>=0; --y) {
- uint *p = (uint*) logo.scanLine(y);
- uint *end = p + w;
- int x = 0;
- while (p < end) {
- glColor4ub(qRed(*p), qGreen(*p), qBlue(*p), uchar(qAlpha(*p)*.9));
- glTranslatef(0.0f, 0.0f, wave[y*w+x]);
- if (qAlpha(*p) > 128)
- glCallList(tile_list);
- glTranslatef(0.0f, 0.0f, -wave[y*w+x]);
- glTranslatef(2.0f, 0.0f, 0.0f);
- ++x;
- ++p;
- }
- glTranslatef(-w*2.0f, 2.0f, 0.0f);
- }
-
- // restore the GL state that QPainter expects
- restoreGLState();
- p.endNativePainting();
-
- // draw the overlayed text using QPainter
- p.setPen(QColor(197, 197, 197, 157));
- p.setBrush(QColor(197, 197, 197, 127));
- p.drawRect(QRect(0, 0, width(), 50));
- p.setPen(Qt::black);
- p.setBrush(Qt::NoBrush);
- const QString str1(tr("A simple OpenGL pbuffer example."));
- const QString str2(tr("Use the mouse wheel to zoom, press buttons and move mouse to rotate, double-click to flip."));
- QFontMetrics fm(p.font());
- p.drawText(width()/2 - fm.width(str1)/2, 20, str1);
- p.drawText(width()/2 - fm.width(str2)/2, 20 + fm.lineSpacing(), str2);
-}
-
-void GLWidget::mousePressEvent(QMouseEvent *e)
-{
- anchor = e->pos();
-}
-
-void GLWidget::mouseMoveEvent(QMouseEvent *e)
-{
- QPoint diff = e->pos() - anchor;
- if (e->buttons() & Qt::LeftButton) {
- rot_x += diff.y()/5.0f;
- rot_y += diff.x()/5.0f;
- } else if (e->buttons() & Qt::RightButton) {
- rot_z += diff.x()/5.0f;
- }
-
- anchor = e->pos();
- draw();
-}
-
-void GLWidget::wheelEvent(QWheelEvent *e)
-{
- e->delta() > 0 ? scale += scale*0.1f : scale -= scale*0.1f;
- draw();
-}
-
-void GLWidget::mouseDoubleClickEvent(QMouseEvent *)
-{
- anim->start();
-}
-
-void GLWidget::animate(qreal val)
-{
- rot_y = val * 180;
- draw();
-}
-
-void GLWidget::animFinished()
-{
- if (anim->direction() == QTimeLine::Forward)
- anim->setDirection(QTimeLine::Backward);
- else
- anim->setDirection(QTimeLine::Forward);
-}
-
-void GLWidget::saveGLState()
-{
- glPushAttrib(GL_ALL_ATTRIB_BITS);
- glMatrixMode(GL_PROJECTION);
- glPushMatrix();
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
-}
-
-void GLWidget::restoreGLState()
-{
- glMatrixMode(GL_PROJECTION);
- glPopMatrix();
- glMatrixMode(GL_MODELVIEW);
- glPopMatrix();
- glPopAttrib();
-}
-
-void GLWidget::timerEvent(QTimerEvent *)
-{
- if (QApplication::mouseButtons() != 0)
- return;
-
- static bool scale_in = true;
-
- if (scale_in && scale > 35.0f)
- scale_in = false;
- else if (!scale_in && scale < .5f)
- scale_in = true;
-
- scale *= scale_in ? 1.01f : 0.99f;
- rot_z += 0.3f;
- rot_x += 0.1f;
-
- static float wt = 0.0;
- wt += 0.1f;
-
- const int width = logo.width();
- const int dx = width >> 1, dy = dx; // disturbance point
- const float v = -4; // wave speed
- const float W = .3f;
- const int AMP = 5;
-
- for (int i = 0; i < width; ++i) {
- for (int j = 0; j < width; ++j) {
- const float s = hypot(j - dx, i - dy);
- const double raw = AMP * sin(2 * M_PI * W * (wt + s / v));
- if (s != 0)
- wave[i * width + j] = raw / (0.2 * (s + 2));
- else
- wave[i * width + j] = raw;
- }
- }
-}
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