source: trunk/examples/opengl/pbuffers2/glwidget.cpp@ 52

Last change on this file since 52 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 10.0 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the examples of the Qt Toolkit.
7**
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15** GNU Lesser General Public License Usage
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19** packaging of this file. Please review the following information to
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41
42#include <QtGui/QImage>
43#include "glwidget.h"
44
45#include <math.h>
46
47#ifndef GL_MULTISAMPLE
48#define GL_MULTISAMPLE 0x809D
49#endif
50
51GLWidget::GLWidget(QWidget *parent)
52 : QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
53{
54 setWindowTitle(tr("OpenGL pbuffers 2"));
55
56 pbuffer = new QGLPixelBuffer(1024, 1024, format(), this);
57
58 rot_x = rot_y = rot_z = 0.0f;
59 scale = 0.1f;
60 anim = new QTimeLine(750, this);
61 anim->setUpdateInterval(20);
62 connect(anim, SIGNAL(valueChanged(qreal)), SLOT(animate(qreal)));
63 connect(anim, SIGNAL(finished()), SLOT(animFinished()));
64
65 svg_renderer = new QSvgRenderer(QLatin1String(":/res/bubbles.svg"), this);
66 connect(svg_renderer, SIGNAL(repaintNeeded()), this, SLOT(draw()));
67
68 logo = QImage(":/res/designer.png");
69 logo = logo.convertToFormat(QImage::Format_ARGB32);
70
71 makeCurrent(); // need a current context to create the display list
72 tile_list = glGenLists(1);
73 glNewList(tile_list, GL_COMPILE);
74 glBegin(GL_QUADS);
75 {
76 glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
77 glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
78 glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
79 glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
80
81 glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
82 glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
83 glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
84 glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
85
86 glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
87 glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
88 glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
89 glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
90
91 glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
92 glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
93 glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
94 glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
95
96 glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
97 glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
98 glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
99 glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
100
101 glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
102 glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
103 glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
104 glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
105}
106 glEnd();
107 glEndList();
108
109 wave = new GLfloat[logo.width()*logo.height()];
110 memset(wave, 0, logo.width()*logo.height());
111 startTimer(30); // wave timer
112
113 pbuffer->makeCurrent();
114 dynamicTexture = pbuffer->generateDynamicTexture();
115
116 // bind the dynamic texture to the pbuffer - this is a no-op under X11
117 hasDynamicTextureUpdate = pbuffer->bindToDynamicTexture(dynamicTexture);
118}