--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/demos/boxes/scene.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,1081 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QDebug>
+#include "scene.h"
+#include <QtGui/qmatrix4x4.h>
+#include <QtGui/qvector3d.h>
+
+#include "3rdparty/fbm.h"
+
+void checkGLErrors(const QString& prefix)
+{
+ switch (glGetError()) {
+ case GL_NO_ERROR:
+ //qDebug() << prefix << tr("No error.");
+ break;
+ case GL_INVALID_ENUM:
+ qDebug() << prefix << QObject::tr("Invalid enum.");
+ break;
+ case GL_INVALID_VALUE:
+ qDebug() << prefix << QObject::tr("Invalid value.");
+ break;
+ case GL_INVALID_OPERATION:
+ qDebug() << prefix << QObject::tr("Invalid operation.");
+ break;
+ case GL_STACK_OVERFLOW:
+ qDebug() << prefix << QObject::tr("Stack overflow.");
+ break;
+ case GL_STACK_UNDERFLOW:
+ qDebug() << prefix << QObject::tr("Stack underflow.");
+ break;
+ case GL_OUT_OF_MEMORY:
+ qDebug() << prefix << QObject::tr("Out of memory.");
+ break;
+ default:
+ qDebug() << prefix << QObject::tr("Unknown error.");
+ break;
+ }
+}
+
+//============================================================================//
+// ColorEdit //
+//============================================================================//
+
+ColorEdit::ColorEdit(QRgb initialColor, int id)
+ : m_color(initialColor), m_id(id)
+{
+ QHBoxLayout *layout = new QHBoxLayout;
+ setLayout(layout);
+ layout->setContentsMargins(0, 0, 0, 0);
+
+ m_lineEdit = new QLineEdit(QString::number(m_color, 16));
+ layout->addWidget(m_lineEdit);
+
+ m_button = new QFrame;
+ QPalette palette = m_button->palette();
+ palette.setColor(QPalette::Window, QColor(m_color));
+ m_button->setPalette(palette);
+ m_button->setAutoFillBackground(true);
+ m_button->setMinimumSize(32, 0);
+ m_button->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
+ m_button->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
+ layout->addWidget(m_button);
+
+ connect(m_lineEdit, SIGNAL(editingFinished()), this, SLOT(editDone()));
+}
+
+void ColorEdit::editDone()
+{
+ bool ok;
+ QRgb newColor = m_lineEdit->text().toUInt(&ok, 16);
+ if (ok)
+ setColor(newColor);
+}
+
+void ColorEdit::mousePressEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton) {
+ QColor color(m_color);
+ QColorDialog dialog(color, 0);
+ dialog.setOption(QColorDialog::ShowAlphaChannel, true);
+// The ifdef block is a workaround for the beta, TODO: remove when bug 238525 is fixed
+#ifdef Q_WS_MAC
+ dialog.setOption(QColorDialog::DontUseNativeDialog, true);
+#endif
+ dialog.move(280, 120);
+ if (dialog.exec() == QDialog::Rejected)
+ return;
+ QRgb newColor = dialog.selectedColor().rgba();
+ if (newColor == m_color)
+ return;
+ setColor(newColor);
+ }
+}
+
+void ColorEdit::setColor(QRgb color)
+{
+ m_color = color;
+ m_lineEdit->setText(QString::number(m_color, 16)); // "Clean up" text
+ QPalette palette = m_button->palette();
+ palette.setColor(QPalette::Window, QColor(m_color));
+ m_button->setPalette(palette);
+ emit colorChanged(m_color, m_id);
+}
+
+//============================================================================//
+// FloatEdit //
+//============================================================================//
+
+FloatEdit::FloatEdit(float initialValue, int id)
+ : m_value(initialValue), m_id(id)
+{
+ QHBoxLayout *layout = new QHBoxLayout;
+ setLayout(layout);
+ layout->setContentsMargins(0, 0, 0, 0);
+
+ m_lineEdit = new QLineEdit(QString::number(m_value));
+ layout->addWidget(m_lineEdit);
+
+ connect(m_lineEdit, SIGNAL(editingFinished()), this, SLOT(editDone()));
+}
+
+void FloatEdit::editDone()
+{
+ bool ok;
+ float newValue = m_lineEdit->text().toFloat(&ok);
+ if (ok) {
+ m_value = newValue;
+ m_lineEdit->setText(QString::number(m_value)); // "Clean up" text
+ emit valueChanged(m_value, m_id);
+ }
+}
+
+//============================================================================//
+// TwoSidedGraphicsWidget //
+//============================================================================//
+
+TwoSidedGraphicsWidget::TwoSidedGraphicsWidget(QGraphicsScene *scene)
+ : QObject(scene)
+ , m_current(0)
+ , m_angle(0)
+ , m_delta(0)
+{
+ for (int i = 0; i < 2; ++i)
+ m_proxyWidgets[i] = 0;
+}
+
+void TwoSidedGraphicsWidget::setWidget(int index, QWidget *widget)
+{
+ if (index < 0 || index >= 2)
+ {
+ qWarning("TwoSidedGraphicsWidget::setWidget: Index out of bounds, index == %d", index);
+ return;
+ }
+
+ GraphicsWidget *proxy = new GraphicsWidget;
+ proxy->setWidget(widget);
+
+ if (m_proxyWidgets[index])
+ delete m_proxyWidgets[index];
+ m_proxyWidgets[index] = proxy;
+
+ proxy->setCacheMode(QGraphicsItem::ItemCoordinateCache);
+ proxy->setZValue(1e30); // Make sure the dialog is drawn on top of all other (OpenGL) items
+
+ if (index != m_current)
+ proxy->setVisible(false);
+
+ qobject_cast<QGraphicsScene *>(parent())->addItem(proxy);
+}
+
+QWidget *TwoSidedGraphicsWidget::widget(int index)
+{
+ if (index < 0 || index >= 2)
+ {
+ qWarning("TwoSidedGraphicsWidget::widget: Index out of bounds, index == %d", index);
+ return 0;
+ }
+ return m_proxyWidgets[index]->widget();
+}
+
+void TwoSidedGraphicsWidget::flip()
+{
+ m_delta = (m_current == 0 ? 9 : -9);
+ animateFlip();
+}
+
+void TwoSidedGraphicsWidget::animateFlip()
+{
+ m_angle += m_delta;
+ if (m_angle == 90) {
+ int old = m_current;
+ m_current ^= 1;
+ m_proxyWidgets[old]->setVisible(false);
+ m_proxyWidgets[m_current]->setVisible(true);
+ m_proxyWidgets[m_current]->setGeometry(m_proxyWidgets[old]->geometry());
+ }
+
+ QRectF r = m_proxyWidgets[m_current]->boundingRect();
+ m_proxyWidgets[m_current]->setTransform(QTransform()
+ .translate(r.width() / 2, r.height() / 2)
+ .rotate(m_angle - 180 * m_current, Qt::YAxis)
+ .translate(-r.width() / 2, -r.height() / 2));
+
+ if ((m_current == 0 && m_angle > 0) || (m_current == 1 && m_angle < 180))
+ QTimer::singleShot(25, this, SLOT(animateFlip()));
+}
+
+QVariant GraphicsWidget::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+ if (change == ItemPositionChange && scene()) {
+ QRectF rect = boundingRect();
+ QPointF pos = value.toPointF();
+ QRectF sceneRect = scene()->sceneRect();
+ if (pos.x() + rect.left() < sceneRect.left())
+ pos.setX(sceneRect.left() - rect.left());
+ else if (pos.x() + rect.right() >= sceneRect.right())
+ pos.setX(sceneRect.right() - rect.right());
+ if (pos.y() + rect.top() < sceneRect.top())
+ pos.setY(sceneRect.top() - rect.top());
+ else if (pos.y() + rect.bottom() >= sceneRect.bottom())
+ pos.setY(sceneRect.bottom() - rect.bottom());
+ return pos;
+ }
+ return QGraphicsProxyWidget::itemChange(change, value);
+}
+
+void GraphicsWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
+{
+ setCacheMode(QGraphicsItem::NoCache);
+ setCacheMode(QGraphicsItem::ItemCoordinateCache);
+ QGraphicsProxyWidget::resizeEvent(event);
+}
+
+void GraphicsWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+ painter->setRenderHint(QPainter::Antialiasing, false);
+ QGraphicsProxyWidget::paint(painter, option, widget);
+ //painter->setRenderHint(QPainter::Antialiasing, true);
+}
+
+//============================================================================//
+// RenderOptionsDialog //
+//============================================================================//
+
+RenderOptionsDialog::RenderOptionsDialog()
+ : QDialog(0, Qt::CustomizeWindowHint | Qt::WindowTitleHint)
+{
+ setWindowOpacity(0.75);
+ setWindowTitle(tr("Options (double click to flip)"));
+ QGridLayout *layout = new QGridLayout;
+ setLayout(layout);
+ layout->setColumnStretch(1, 1);
+
+ int row = 0;
+
+ QCheckBox *check = new QCheckBox(tr("Dynamic cube map"));
+ check->setCheckState(Qt::Unchecked);
+ // Dynamic cube maps are only enabled when multi-texturing and render to texture are available.
+ check->setEnabled(glActiveTexture && glGenFramebuffersEXT);
+ connect(check, SIGNAL(stateChanged(int)), this, SIGNAL(dynamicCubemapToggled(int)));
+ layout->addWidget(check, 0, 0, 1, 2);
+ ++row;
+
+ QPalette palette;
+
+ // Load all .par files
+ // .par files have a simple syntax for specifying user adjustable uniform variables.
+ QSet<QByteArray> uniforms;
+ QList<QString> filter = QStringList("*.par");
+ QList<QFileInfo> files = QDir(":/res/boxes/").entryInfoList(filter, QDir::Files | QDir::Readable);
+
+ foreach (QFileInfo fileInfo, files) {
+ QFile file(fileInfo.absoluteFilePath());
+ if (file.open(QIODevice::ReadOnly)) {
+ while (!file.atEnd()) {
+ QList<QByteArray> tokens = file.readLine().simplified().split(' ');
+ QList<QByteArray>::const_iterator it = tokens.begin();
+ if (it == tokens.end())
+ continue;
+ QByteArray type = *it;
+ if (++it == tokens.end())
+ continue;
+ QByteArray name = *it;
+ bool singleElement = (tokens.size() == 3); // type, name and one value
+ char counter[10] = "000000000";
+ int counterPos = 8; // position of last digit
+ while (++it != tokens.end()) {
+ m_parameterNames << name;
+ if (!singleElement) {
+ m_parameterNames.back() += "[";
+ m_parameterNames.back() += counter + counterPos;
+ m_parameterNames.back() += "]";
+ int j = 8; // position of last digit
+ ++counter[j];
+ while (j > 0 && counter[j] > '9') {
+ counter[j] = '0';
+ ++counter[--j];
+ }
+ if (j < counterPos)
+ counterPos = j;
+ }
+
+ if (type == "color") {
+ layout->addWidget(new QLabel(m_parameterNames.back()));
+ bool ok;
+ ColorEdit *colorEdit = new ColorEdit(it->toUInt(&ok, 16), m_parameterNames.size() - 1);
+ m_parameterEdits << colorEdit;
+ layout->addWidget(colorEdit);
+ connect(colorEdit, SIGNAL(colorChanged(QRgb, int)), this, SLOT(setColorParameter(QRgb, int)));
+ ++row;
+ } else if (type == "float") {
+ layout->addWidget(new QLabel(m_parameterNames.back()));
+ bool ok;
+ FloatEdit *floatEdit = new FloatEdit(it->toFloat(&ok), m_parameterNames.size() - 1);
+ m_parameterEdits << floatEdit;
+ layout->addWidget(floatEdit);
+ connect(floatEdit, SIGNAL(valueChanged(float, int)), this, SLOT(setFloatParameter(float, int)));
+ ++row;
+ }
+ }
+ }
+ file.close();
+ }
+ }
+
+ layout->addWidget(new QLabel(tr("Texture:")));
+ m_textureCombo = new QComboBox;
+ connect(m_textureCombo, SIGNAL(currentIndexChanged(int)), this, SIGNAL(textureChanged(int)));
+ layout->addWidget(m_textureCombo);
+ ++row;
+
+ layout->addWidget(new QLabel(tr("Shader:")));
+ m_shaderCombo = new QComboBox;
+ connect(m_shaderCombo, SIGNAL(currentIndexChanged(int)), this, SIGNAL(shaderChanged(int)));
+ layout->addWidget(m_shaderCombo);
+ ++row;
+
+ layout->setRowStretch(row, 1);
+}
+
+int RenderOptionsDialog::addTexture(const QString &name)
+{
+ m_textureCombo->addItem(name);
+ return m_textureCombo->count() - 1;
+}
+
+int RenderOptionsDialog::addShader(const QString &name)
+{
+ m_shaderCombo->addItem(name);
+ return m_shaderCombo->count() - 1;
+}
+
+void RenderOptionsDialog::emitParameterChanged()
+{
+ foreach (ParameterEdit *edit, m_parameterEdits)
+ edit->emitChange();
+}
+
+void RenderOptionsDialog::setColorParameter(QRgb color, int id)
+{
+ emit colorParameterChanged(m_parameterNames[id], color);
+}
+
+void RenderOptionsDialog::setFloatParameter(float value, int id)
+{
+ emit floatParameterChanged(m_parameterNames[id], value);
+}
+
+void RenderOptionsDialog::mouseDoubleClickEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton)
+ emit doubleClicked();
+}
+
+//============================================================================//
+// ItemDialog //
+//============================================================================//
+
+ItemDialog::ItemDialog()
+ : QDialog(0, Qt::CustomizeWindowHint | Qt::WindowTitleHint)
+{
+ setWindowTitle(tr("Items (double click to flip)"));
+ setWindowOpacity(0.75);
+ resize(160, 100);
+
+ QVBoxLayout *layout = new QVBoxLayout;
+ setLayout(layout);
+ QPushButton *button;
+
+ button = new QPushButton(tr("Add Qt box"));
+ layout->addWidget(button);
+ connect(button, SIGNAL(clicked()), this, SLOT(triggerNewQtBox()));
+
+ button = new QPushButton(tr("Add circle"));
+ layout->addWidget(button);
+ connect(button, SIGNAL(clicked()), this, SLOT(triggerNewCircleItem()));
+
+ button = new QPushButton(tr("Add square"));
+ layout->addWidget(button);
+ connect(button, SIGNAL(clicked()), this, SLOT(triggerNewSquareItem()));
+
+ layout->addStretch(1);
+}
+
+void ItemDialog::triggerNewQtBox()
+{
+ emit newItemTriggered(QtBoxItem);
+}
+
+void ItemDialog::triggerNewCircleItem()
+{
+ emit newItemTriggered(CircleItem);
+}
+
+void ItemDialog::triggerNewSquareItem()
+{
+ emit newItemTriggered(SquareItem);
+}
+
+void ItemDialog::mouseDoubleClickEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton)
+ emit doubleClicked();
+}
+
+//============================================================================//
+// Scene //
+//============================================================================//
+
+const static char environmentShaderText[] =
+ "uniform samplerCube env;"
+ "void main() {"
+ "gl_FragColor = textureCube(env, gl_TexCoord[1].xyz);"
+ "}";
+
+Scene::Scene(int width, int height, int maxTextureSize)
+ : m_distExp(600)
+ , m_frame(0)
+ , m_maxTextureSize(maxTextureSize)
+ , m_currentShader(0)
+ , m_currentTexture(0)
+ , m_dynamicCubemap(false)
+ , m_updateAllCubemaps(true)
+ , m_box(0)
+ , m_vertexShader(0)
+ , m_environmentShader(0)
+ , m_environmentProgram(0)
+{
+ setSceneRect(0, 0, width, height);
+
+ m_trackBalls[0] = TrackBall(0.05f, QVector3D(0, 1, 0), TrackBall::Sphere);
+ m_trackBalls[1] = TrackBall(0.005f, QVector3D(0, 0, 1), TrackBall::Sphere);
+ m_trackBalls[2] = TrackBall(0.0f, QVector3D(0, 1, 0), TrackBall::Plane);
+
+ m_renderOptions = new RenderOptionsDialog;
+ m_renderOptions->move(20, 120);
+ m_renderOptions->resize(m_renderOptions->sizeHint());
+
+ connect(m_renderOptions, SIGNAL(dynamicCubemapToggled(int)), this, SLOT(toggleDynamicCubemap(int)));
+ connect(m_renderOptions, SIGNAL(colorParameterChanged(const QString &, QRgb)), this, SLOT(setColorParameter(const QString &, QRgb)));
+ connect(m_renderOptions, SIGNAL(floatParameterChanged(const QString &, float)), this, SLOT(setFloatParameter(const QString &, float)));
+ connect(m_renderOptions, SIGNAL(textureChanged(int)), this, SLOT(setTexture(int)));
+ connect(m_renderOptions, SIGNAL(shaderChanged(int)), this, SLOT(setShader(int)));
+
+ m_itemDialog = new ItemDialog;
+ connect(m_itemDialog, SIGNAL(newItemTriggered(ItemDialog::ItemType)), this, SLOT(newItem(ItemDialog::ItemType)));
+
+ TwoSidedGraphicsWidget *twoSided = new TwoSidedGraphicsWidget(this);
+ twoSided->setWidget(0, m_renderOptions);
+ twoSided->setWidget(1, m_itemDialog);
+
+ connect(m_renderOptions, SIGNAL(doubleClicked()), twoSided, SLOT(flip()));
+ connect(m_itemDialog, SIGNAL(doubleClicked()), twoSided, SLOT(flip()));
+
+ addItem(new QtBox(64, width - 64, height - 64));
+ addItem(new QtBox(64, width - 64, 64));
+ addItem(new QtBox(64, 64, height - 64));
+ addItem(new QtBox(64, 64, 64));
+
+ initGL();
+
+ m_timer = new QTimer(this);
+ m_timer->setInterval(20);
+ connect(m_timer, SIGNAL(timeout()), this, SLOT(update()));
+ m_timer->start();
+
+ m_time.start();
+}
+
+Scene::~Scene()
+{
+ if (m_box)
+ delete m_box;
+ foreach (GLTexture *texture, m_textures)
+ if (texture) delete texture;
+ if (m_mainCubemap)
+ delete m_mainCubemap;
+ foreach (QGLShaderProgram *program, m_programs)
+ if (program) delete program;
+ if (m_vertexShader)
+ delete m_vertexShader;
+ foreach (QGLShader *shader, m_fragmentShaders)
+ if (shader) delete shader;
+ foreach (GLRenderTargetCube *rt, m_cubemaps)
+ if (rt) delete rt;
+ if (m_environmentShader)
+ delete m_environmentShader;
+ if (m_environmentProgram)
+ delete m_environmentProgram;
+}
+
+void Scene::initGL()
+{
+ m_box = new GLRoundedBox(0.25f, 1.0f, 10);
+
+ m_vertexShader = new QGLShader(":/res/boxes/basic.vsh", QGLShader::VertexShader);
+
+ QStringList list;
+ list << ":/res/boxes/cubemap_posx.jpg" << ":/res/boxes/cubemap_negx.jpg" << ":/res/boxes/cubemap_posy.jpg"
+ << ":/res/boxes/cubemap_negy.jpg" << ":/res/boxes/cubemap_posz.jpg" << ":/res/boxes/cubemap_negz.jpg";
+ m_environment = new GLTextureCube(list, qMin(1024, m_maxTextureSize));
+ m_environmentShader = new QGLShader(QGLShader::FragmentShader);
+ m_environmentShader->compile(environmentShaderText);
+ m_environmentProgram = new QGLShaderProgram;
+ m_environmentProgram->addShader(m_vertexShader);
+ m_environmentProgram->addShader(m_environmentShader);
+ m_environmentProgram->link();
+
+ const int NOISE_SIZE = 128; // for a different size, B and BM in fbm.c must also be changed
+ m_noise = new GLTexture3D(NOISE_SIZE, NOISE_SIZE, NOISE_SIZE);
+ QRgb *data = new QRgb[NOISE_SIZE * NOISE_SIZE * NOISE_SIZE];
+ memset(data, 0, NOISE_SIZE * NOISE_SIZE * NOISE_SIZE * sizeof(QRgb));
+ QRgb *p = data;
+ float pos[3];
+ for (int k = 0; k < NOISE_SIZE; ++k) {
+ pos[2] = k * (0x20 / (float)NOISE_SIZE);
+ for (int j = 0; j < NOISE_SIZE; ++j) {
+ for (int i = 0; i < NOISE_SIZE; ++i) {
+ for (int byte = 0; byte < 4; ++byte) {
+ pos[0] = (i + (byte & 1) * 16) * (0x20 / (float)NOISE_SIZE);
+ pos[1] = (j + (byte & 2) * 8) * (0x20 / (float)NOISE_SIZE);
+ *p |= (int)(128.0f * (noise3(pos) + 1.0f)) << (byte * 8);
+ }
+ ++p;
+ }
+ }
+ }
+ m_noise->load(NOISE_SIZE, NOISE_SIZE, NOISE_SIZE, data);
+ delete[] data;
+
+ m_mainCubemap = new GLRenderTargetCube(512);
+
+ QStringList filter;
+ QList<QFileInfo> files;
+
+ // Load all .png files as textures
+ m_currentTexture = 0;
+ filter = QStringList("*.png");
+ files = QDir(":/res/boxes/").entryInfoList(filter, QDir::Files | QDir::Readable);
+
+ foreach (QFileInfo file, files) {
+ GLTexture *texture = new GLTexture2D(file.absoluteFilePath(), qMin(256, m_maxTextureSize), qMin(256, m_maxTextureSize));
+ if (texture->failed()) {
+ delete texture;
+ continue;
+ }
+ m_textures << texture;
+ m_renderOptions->addTexture(file.baseName());
+ }
+
+ if (m_textures.size() == 0)
+ m_textures << new GLTexture2D(qMin(64, m_maxTextureSize), qMin(64, m_maxTextureSize));
+
+ // Load all .fsh files as fragment shaders
+ m_currentShader = 0;
+ filter = QStringList("*.fsh");
+ files = QDir(":/res/boxes/").entryInfoList(filter, QDir::Files | QDir::Readable);
+ foreach (QFileInfo file, files) {
+ QGLShaderProgram *program = new QGLShaderProgram;
+ QGLShader* shader = new QGLShader(file.absoluteFilePath(), QGLShader::FragmentShader);
+ // The program does not take ownership over the shaders, so store them in a vector so they can be deleted afterwards.
+ program->addShader(m_vertexShader);
+ program->addShader(shader);
+ if (!program->link()) {
+ qWarning("Failed to compile and link shader program");
+ qWarning("Vertex shader log:");
+ qWarning() << m_vertexShader->log();
+ qWarning() << "Fragment shader log ( file =" << file.absoluteFilePath() << "):";
+ qWarning() << shader->log();
+ qWarning("Shader program log:");
+ qWarning() << program->log();
+
+ delete shader;
+ delete program;
+ continue;
+ }
+
+ m_fragmentShaders << shader;
+ m_programs << program;
+ m_renderOptions->addShader(file.baseName());
+
+ program->enable();
+ m_cubemaps << ((program->uniformLocation("env") != -1) ? new GLRenderTargetCube(qMin(256, m_maxTextureSize)) : 0);
+ program->disable();
+ }
+
+ if (m_programs.size() == 0)
+ m_programs << new QGLShaderProgram;
+
+ m_renderOptions->emitParameterChanged();
+}
+
+static void loadMatrix(const QMatrix4x4& m)
+{
+ GLfloat mat[16];
+ const qreal *data = m.constData();
+ for (int index = 0; index < 16; ++index)
+ mat[index] = data[index];
+ glLoadMatrixf(mat);
+}
+
+static void multMatrix(const QMatrix4x4& m)
+{
+ GLfloat mat[16];
+ const qreal *data = m.constData();
+ for (int index = 0; index < 16; ++index)
+ mat[index] = data[index];
+ glMultMatrixf(mat);
+}
+
+// If one of the boxes should not be rendered, set excludeBox to its index.
+// If the main box should not be rendered, set excludeBox to -1.
+void Scene::renderBoxes(const QMatrix4x4 &view, int excludeBox)
+{
+ QMatrix4x4 invView = view.inverted();
+
+ // If multi-texturing is supported, use three saplers.
+ if (glActiveTexture) {
+ glActiveTexture(GL_TEXTURE0);
+ m_textures[m_currentTexture]->bind();
+ glActiveTexture(GL_TEXTURE2);
+ m_noise->bind();
+ glActiveTexture(GL_TEXTURE1);
+ } else {
+ m_textures[m_currentTexture]->bind();
+ }
+
+ glDisable(GL_LIGHTING);
+ glDisable(GL_CULL_FACE);
+
+ QMatrix4x4 viewRotation(view);
+ viewRotation(3, 0) = viewRotation(3, 1) = viewRotation(3, 2) = 0.0f;
+ viewRotation(0, 3) = viewRotation(1, 3) = viewRotation(2, 3) = 0.0f;
+ viewRotation(3, 3) = 1.0f;
+ loadMatrix(viewRotation);
+ glScalef(20.0f, 20.0f, 20.0f);
+
+ // Don't render the environment if the environment texture can't be set for the correct sampler.
+ if (glActiveTexture) {
+ m_environment->bind();
+ m_environmentProgram->enable();
+ m_environmentProgram->setUniformValue("tex", GLint(0));
+ m_environmentProgram->setUniformValue("env", GLint(1));
+ m_environmentProgram->setUniformValue("noise", GLint(2));
+ m_box->draw();
+ m_environmentProgram->disable();
+ m_environment->unbind();
+ }
+
+ loadMatrix(view);
+
+ glEnable(GL_CULL_FACE);
+ glEnable(GL_LIGHTING);
+
+ for (int i = 0; i < m_programs.size(); ++i) {
+ if (i == excludeBox)
+ continue;
+
+ glPushMatrix();
+ QMatrix4x4 m;
+ m.rotate(m_trackBalls[1].rotation());
+ multMatrix(m);
+
+ glRotatef(360.0f * i / m_programs.size(), 0.0f, 0.0f, 1.0f);
+ glTranslatef(2.0f, 0.0f, 0.0f);
+ glScalef(0.3f, 0.6f, 0.6f);
+
+ if (glActiveTexture) {
+ if (m_dynamicCubemap && m_cubemaps[i])
+ m_cubemaps[i]->bind();
+ else
+ m_environment->bind();
+ }
+ m_programs[i]->enable();
+ m_programs[i]->setUniformValue("tex", GLint(0));
+ m_programs[i]->setUniformValue("env", GLint(1));
+ m_programs[i]->setUniformValue("noise", GLint(2));
+ m_programs[i]->setUniformValue("view", view);
+ m_programs[i]->setUniformValue("invView", invView);
+ m_box->draw();
+ m_programs[i]->disable();
+
+ if (glActiveTexture) {
+ if (m_dynamicCubemap && m_cubemaps[i])
+ m_cubemaps[i]->unbind();
+ else
+ m_environment->unbind();
+ }
+ glPopMatrix();
+ }
+
+ if (-1 != excludeBox) {
+ QMatrix4x4 m;
+ m.rotate(m_trackBalls[0].rotation());
+ multMatrix(m);
+
+ if (glActiveTexture) {
+ if (m_dynamicCubemap)
+ m_mainCubemap->bind();
+ else
+ m_environment->bind();
+ }
+
+ m_programs[m_currentShader]->enable();
+ m_programs[m_currentShader]->setUniformValue("tex", GLint(0));
+ m_programs[m_currentShader]->setUniformValue("env", GLint(1));
+ m_programs[m_currentShader]->setUniformValue("noise", GLint(2));
+ m_programs[m_currentShader]->setUniformValue("view", view);
+ m_programs[m_currentShader]->setUniformValue("invView", invView);
+ m_box->draw();
+ m_programs[m_currentShader]->disable();
+
+ if (glActiveTexture) {
+ if (m_dynamicCubemap)
+ m_mainCubemap->unbind();
+ else
+ m_environment->unbind();
+ }
+ }
+
+ if (glActiveTexture) {
+ glActiveTexture(GL_TEXTURE2);
+ m_noise->unbind();
+ glActiveTexture(GL_TEXTURE0);
+ }
+ m_textures[m_currentTexture]->unbind();
+}
+
+void Scene::setStates()
+{
+ //glClearColor(0.25f, 0.25f, 0.5f, 1.0f);
+
+ glEnable(GL_DEPTH_TEST);
+ glEnable(GL_CULL_FACE);
+ glEnable(GL_LIGHTING);
+ //glEnable(GL_COLOR_MATERIAL);
+ glEnable(GL_TEXTURE_2D);
+ glEnable(GL_NORMALIZE);
+
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+
+ setLights();
+
+ float materialSpecular[] = {0.5f, 0.5f, 0.5f, 1.0f};
+ glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, materialSpecular);
+ glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 32.0f);
+}
+
+void Scene::setLights()
+{
+ glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
+ //float lightColour[] = {1.0f, 1.0f, 1.0f, 1.0f};
+ float lightDir[] = {0.0f, 0.0f, 1.0f, 0.0f};
+ //glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColour);
+ //glLightfv(GL_LIGHT0, GL_SPECULAR, lightColour);
+ glLightfv(GL_LIGHT0, GL_POSITION, lightDir);
+ glLightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER, 1.0f);
+ glEnable(GL_LIGHT0);
+}
+
+void Scene::defaultStates()
+{
+ //glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+
+ glDisable(GL_DEPTH_TEST);
+ glDisable(GL_CULL_FACE);
+ glDisable(GL_LIGHTING);
+ //glDisable(GL_COLOR_MATERIAL);
+ glDisable(GL_TEXTURE_2D);
+ glDisable(GL_LIGHT0);
+ glDisable(GL_NORMALIZE);
+
+ glMatrixMode(GL_MODELVIEW);
+ glPopMatrix();
+
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+
+ glLightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER, 0.0f);
+ float defaultMaterialSpecular[] = {0.0f, 0.0f, 0.0f, 1.0f};
+ glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, defaultMaterialSpecular);
+ glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 0.0f);
+}
+
+void Scene::renderCubemaps()
+{
+ // To speed things up, only update the cubemaps for the small cubes every N frames.
+ const int N = (m_updateAllCubemaps ? 1 : 3);
+
+ QMatrix4x4 mat;
+ GLRenderTargetCube::getProjectionMatrix(mat, 0.1f, 100.0f);
+
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ loadMatrix(mat);
+
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+
+ QVector3D center;
+
+ for (int i = m_frame % N; i < m_cubemaps.size(); i += N) {
+ if (0 == m_cubemaps[i])
+ continue;
+
+ float angle = 2.0f * PI * i / m_cubemaps.size();
+
+ center = m_trackBalls[1].rotation().rotateVector(QVector3D(cos(angle), sin(angle), 0.0f));
+
+ for (int face = 0; face < 6; ++face) {
+ m_cubemaps[i]->begin(face);
+
+ GLRenderTargetCube::getViewMatrix(mat, face);
+ QVector4D v = QVector4D(-center.x(), -center.y(), -center.z(), 1.0);
+ mat.setColumn(3, mat * v);
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ renderBoxes(mat, i);
+
+ m_cubemaps[i]->end();
+ }
+ }
+
+ for (int face = 0; face < 6; ++face) {
+ m_mainCubemap->begin(face);
+ GLRenderTargetCube::getViewMatrix(mat, face);
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ renderBoxes(mat, -1);
+
+ m_mainCubemap->end();
+ }
+
+ glPopMatrix();
+
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+
+ m_updateAllCubemaps = false;
+}
+
+void Scene::drawBackground(QPainter *painter, const QRectF &)
+{
+ float width = float(painter->device()->width());
+ float height = float(painter->device()->height());
+
+ painter->beginNativePainting();
+ setStates();
+
+ if (m_dynamicCubemap)
+ renderCubemaps();
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ glMatrixMode(GL_PROJECTION);
+ gluPerspective(60.0, width / height, 0.01, 15.0);
+
+ glMatrixMode(GL_MODELVIEW);
+
+ QMatrix4x4 view;
+ view.rotate(m_trackBalls[2].rotation());
+ view(2, 3) -= 2.0f * exp(m_distExp / 1200.0f);
+ renderBoxes(view);
+
+ defaultStates();
+ ++m_frame;
+
+ painter->endNativePainting();
+}
+
+QPointF Scene::pixelPosToViewPos(const QPointF& p)
+{
+ return QPointF(2.0 * float(p.x()) / width() - 1.0,
+ 1.0 - 2.0 * float(p.y()) / height());
+}
+
+void Scene::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
+{
+ QGraphicsScene::mouseMoveEvent(event);
+ if (event->isAccepted())
+ return;
+
+ if (event->buttons() & Qt::LeftButton) {
+ m_trackBalls[0].move(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ event->accept();
+ } else {
+ m_trackBalls[0].release(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ }
+
+ if (event->buttons() & Qt::RightButton) {
+ m_trackBalls[1].move(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ event->accept();
+ } else {
+ m_trackBalls[1].release(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ }
+
+ if (event->buttons() & Qt::MidButton) {
+ m_trackBalls[2].move(pixelPosToViewPos(event->scenePos()), QQuaternion());
+ event->accept();
+ } else {
+ m_trackBalls[2].release(pixelPosToViewPos(event->scenePos()), QQuaternion());
+ }
+}
+
+void Scene::mousePressEvent(QGraphicsSceneMouseEvent *event)
+{
+ QGraphicsScene::mousePressEvent(event);
+ if (event->isAccepted())
+ return;
+
+ if (event->buttons() & Qt::LeftButton) {
+ m_trackBalls[0].push(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ event->accept();
+ }
+
+ if (event->buttons() & Qt::RightButton) {
+ m_trackBalls[1].push(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ event->accept();
+ }
+
+ if (event->buttons() & Qt::MidButton) {
+ m_trackBalls[2].push(pixelPosToViewPos(event->scenePos()), QQuaternion());
+ event->accept();
+ }
+}
+
+void Scene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
+{
+ QGraphicsScene::mouseReleaseEvent(event);
+ if (event->isAccepted())
+ return;
+
+ if (event->button() == Qt::LeftButton) {
+ m_trackBalls[0].release(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ event->accept();
+ }
+
+ if (event->button() == Qt::RightButton) {
+ m_trackBalls[1].release(pixelPosToViewPos(event->scenePos()), m_trackBalls[2].rotation().conjugate());
+ event->accept();
+ }
+
+ if (event->button() == Qt::MidButton) {
+ m_trackBalls[2].release(pixelPosToViewPos(event->scenePos()), QQuaternion());
+ event->accept();
+ }
+}
+
+void Scene::wheelEvent(QGraphicsSceneWheelEvent * event)
+{
+ QGraphicsScene::wheelEvent(event);
+ if (!event->isAccepted()) {
+ m_distExp += event->delta();
+ if (m_distExp < -8 * 120)
+ m_distExp = -8 * 120;
+ if (m_distExp > 10 * 120)
+ m_distExp = 10 * 120;
+ event->accept();
+ }
+}
+
+void Scene::setShader(int index)
+{
+ if (index >= 0 && index < m_fragmentShaders.size())
+ m_currentShader = index;
+}
+
+void Scene::setTexture(int index)
+{
+ if (index >= 0 && index < m_textures.size())
+ m_currentTexture = index;
+}
+
+void Scene::toggleDynamicCubemap(int state)
+{
+ if ((m_dynamicCubemap = (state == Qt::Checked)))
+ m_updateAllCubemaps = true;
+}
+
+void Scene::setColorParameter(const QString &name, QRgb color)
+{
+ // set the color in all programs
+ foreach (QGLShaderProgram *program, m_programs) {
+ program->enable();
+ program->setUniformValue(program->uniformLocation(name), QColor(color));
+ program->disable();
+ }
+}
+
+void Scene::setFloatParameter(const QString &name, float value)
+{
+ // set the color in all programs
+ foreach (QGLShaderProgram *program, m_programs) {
+ program->enable();
+ program->setUniformValue(program->uniformLocation(name), value);
+ program->disable();
+ }
+}
+
+void Scene::newItem(ItemDialog::ItemType type)
+{
+ QSize size = sceneRect().size().toSize();
+ switch (type) {
+ case ItemDialog::QtBoxItem:
+ addItem(new QtBox(64, rand() % (size.width() - 64) + 32, rand() % (size.height() - 64) + 32));
+ break;
+ case ItemDialog::CircleItem:
+ addItem(new CircleItem(64, rand() % (size.width() - 64) + 32, rand() % (size.height() - 64) + 32));
+ break;
+ case ItemDialog::SquareItem:
+ addItem(new SquareItem(64, rand() % (size.width() - 64) + 32, rand() % (size.height() - 64) + 32));
+ break;
+ default:
+ break;
+ }
+}