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-rw-r--r--examples/opengl/qopenglwidget/CMakeLists.txt50
-rw-r--r--examples/opengl/qopenglwidget/bubble.cpp99
-rw-r--r--examples/opengl/qopenglwidget/bubble.h39
-rw-r--r--examples/opengl/qopenglwidget/glwidget.cpp540
-rw-r--r--examples/opengl/qopenglwidget/glwidget.h85
-rw-r--r--examples/opengl/qopenglwidget/main.cpp43
-rw-r--r--examples/opengl/qopenglwidget/mainwindow.cpp188
-rw-r--r--examples/opengl/qopenglwidget/mainwindow.h39
-rw-r--r--examples/opengl/qopenglwidget/qopenglwidget.pro15
-rw-r--r--examples/opengl/qopenglwidget/qt.pngbin2991 -> 0 bytes
-rw-r--r--examples/opengl/qopenglwidget/texture.qrc5
11 files changed, 0 insertions, 1103 deletions
diff --git a/examples/opengl/qopenglwidget/CMakeLists.txt b/examples/opengl/qopenglwidget/CMakeLists.txt
deleted file mode 100644
index d2c48981da..0000000000
--- a/examples/opengl/qopenglwidget/CMakeLists.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-cmake_minimum_required(VERSION 3.16)
-project(qopenglwidget LANGUAGES CXX)
-
-set(CMAKE_AUTOMOC ON)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
- set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/qopenglwidget")
-
-find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL OpenGLWidgets Widgets)
-
-qt_add_executable(qopenglwidget
- bubble.cpp bubble.h
- glwidget.cpp glwidget.h
- main.cpp
- mainwindow.cpp mainwindow.h
-)
-
-set_target_properties(qopenglwidget PROPERTIES
- WIN32_EXECUTABLE TRUE
- MACOSX_BUNDLE TRUE
-)
-
-target_link_libraries(qopenglwidget PUBLIC
- Qt::Core
- Qt::Gui
- Qt::OpenGL
- Qt::OpenGLWidgets
- Qt::Widgets
-)
-
-# Resources:
-set(texture_resource_files
- "qt.png"
-)
-
-qt6_add_resources(qopenglwidget "texture"
- PREFIX
- "/"
- FILES
- ${texture_resource_files}
-)
-
-install(TARGETS qopenglwidget
- RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
- BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
- LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)
diff --git a/examples/opengl/qopenglwidget/bubble.cpp b/examples/opengl/qopenglwidget/bubble.cpp
deleted file mode 100644
index 3c32b62113..0000000000
--- a/examples/opengl/qopenglwidget/bubble.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QtWidgets>
-
-#include "bubble.h"
-
-Bubble::Bubble(const QPointF &position, qreal radius, const QPointF &velocity)
- : position(position), vel(velocity), radius(radius)
-{
- innerColor = randomColor();
- outerColor = randomColor();
- updateBrush();
-}
-
-//! [0]
-void Bubble::updateCache()
-{
- delete cache;
- cache = new QImage(qRound(radius * 2 + 2), qRound(radius * 2 + 2), QImage::Format_ARGB32_Premultiplied);
- cache->fill(0x00000000);
- QPainter p(cache);
- p.setRenderHint(QPainter::Antialiasing);
- QPen pen(Qt::white);
- pen.setWidth(2);
- p.setPen(pen);
- p.setBrush(brush);
- p.drawEllipse(1, 1, int(2*radius), int(2*radius));
-}
-//! [0]
-
-Bubble::~Bubble()
-{
- delete cache;
-}
-
-void Bubble::updateBrush()
-{
- QRadialGradient gradient(QPointF(radius, radius), radius,
- QPointF(radius*0.5, radius*0.5));
-
- gradient.setColorAt(0, QColor(255, 255, 255, 255));
- gradient.setColorAt(0.25, innerColor);
- gradient.setColorAt(1, outerColor);
- brush = QBrush(gradient);
- updateCache();
-}
-
-//! [1]
-void Bubble::drawBubble(QPainter *painter)
-{
- painter->save();
- painter->translate(position.x() - radius, position.y() - radius);
- painter->setOpacity(0.8);
- painter->drawImage(0, 0, *cache);
- painter->restore();
-}
-//! [1]
-
-QColor Bubble::randomColor()
-{
- int red = int(185 + QRandomGenerator::global()->bounded(70));
- int green = int(185 + QRandomGenerator::global()->bounded(70));
- int blue = int(205 + QRandomGenerator::global()->bounded(50));
- int alpha = int(91 + QRandomGenerator::global()->bounded(100));
-
- return QColor(red, green, blue, alpha);
-}
-
-void Bubble::move(const QRect &bbox)
-{
- position += vel;
- qreal leftOverflow = position.x() - radius - bbox.left();
- qreal rightOverflow = position.x() + radius - bbox.right();
- qreal topOverflow = position.y() - radius - bbox.top();
- qreal bottomOverflow = position.y() + radius - bbox.bottom();
-
- if (leftOverflow < 0.0) {
- position.setX(position.x() - 2 * leftOverflow);
- vel.setX(-vel.x());
- } else if (rightOverflow > 0.0) {
- position.setX(position.x() - 2 * rightOverflow);
- vel.setX(-vel.x());
- }
-
- if (topOverflow < 0.0) {
- position.setY(position.y() - 2 * topOverflow);
- vel.setY(-vel.y());
- } else if (bottomOverflow > 0.0) {
- position.setY(position.y() - 2 * bottomOverflow);
- vel.setY(-vel.y());
- }
-}
-
-QRectF Bubble::rect()
-{
- return QRectF(position.x() - radius, position.y() - radius,
- 2 * radius, 2 * radius);
-}
diff --git a/examples/opengl/qopenglwidget/bubble.h b/examples/opengl/qopenglwidget/bubble.h
deleted file mode 100644
index 47355ead41..0000000000
--- a/examples/opengl/qopenglwidget/bubble.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef BUBBLE_H
-#define BUBBLE_H
-
-#include <QBrush>
-#include <QColor>
-#include <QPointF>
-#include <QRect>
-#include <QRectF>
-
-QT_FORWARD_DECLARE_CLASS(QPainter)
-
-class Bubble
-{
-public:
- Bubble(const QPointF &position, qreal radius, const QPointF &velocity);
- ~Bubble();
-
- void drawBubble(QPainter *painter);
- void updateBrush();
- void move(const QRect &bbox);
- void updateCache();
- QRectF rect();
-
-private:
- QColor randomColor();
-
- QBrush brush;
- QPointF position;
- QPointF vel;
- qreal radius;
- QColor innerColor;
- QColor outerColor;
- QImage *cache = nullptr;
-};
-
-#endif
diff --git a/examples/opengl/qopenglwidget/glwidget.cpp b/examples/opengl/qopenglwidget/glwidget.cpp
deleted file mode 100644
index 96d5d51321..0000000000
--- a/examples/opengl/qopenglwidget/glwidget.cpp
+++ /dev/null
@@ -1,540 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "glwidget.h"
-#include <QPainter>
-#include <QPaintEngine>
-#include <QOpenGLShaderProgram>
-#include <QOpenGLTexture>
-#include <QRandomGenerator>
-#include <QCoreApplication>
-#include <qmath.h>
-
-#include "mainwindow.h"
-#include "bubble.h"
-
-const int bubbleNum = 8;
-
-#ifndef GL_SRGB8_ALPHA8
-#define GL_SRGB8_ALPHA8 0x8C43
-#endif
-
-GLWidget::GLWidget(MainWindow *maybeMainWindow, const QColor &background)
- : m_mainWindow(maybeMainWindow),
- m_background(background)
-{
- setMinimumSize(300, 250);
- if (QCoreApplication::arguments().contains(QStringLiteral("--srgb")))
- setTextureFormat(GL_SRGB8_ALPHA8);
-}
-
-GLWidget::~GLWidget()
-{
- reset();
-}
-
-void GLWidget::reset()
-{
- qDeleteAll(m_bubbles);
- // Leave everything in a state suitable for a subsequent call to
- // initialize(). This matters when coming from the context's
- // aboutToBeDestroyed signal, would not matter when invoked from the
- // destructor.
- m_bubbles.clear();
-
- // And now release all OpenGL resources.
- makeCurrent();
- delete m_texture;
- m_texture = nullptr;
- delete m_program1;
- m_program1 = nullptr;
- delete m_program2;
- m_program2 = nullptr;
- delete m_vshader1;
- m_vshader1 = nullptr;
- delete m_fshader1;
- m_fshader1 = nullptr;
- delete m_vshader2;
- m_vshader2 = nullptr;
- delete m_fshader2;
- m_fshader2 = nullptr;
- m_vbo1.destroy();
- m_vbo2.destroy();
- doneCurrent();
-
- // We are done with the current QOpenGLContext, forget it. If there is a
- // subsequent initialize(), that will then connect to the new context.
- QObject::disconnect(m_contextWatchConnection);
-}
-
-void GLWidget::setScaling(int scale)
-{
- if (scale > 30)
- m_fScale = 1 + qreal(scale - 30) / 30 * 0.25;
- else if (scale < 30)
- m_fScale = 1 - (qreal(30 - scale) / 30 * 0.25);
- else
- m_fScale = 1;
-}
-
-void GLWidget::setLogo()
-{
- m_qtLogo = true;
-}
-
-void GLWidget::setTexture()
-{
- m_qtLogo = false;
-}
-
-void GLWidget::setShowBubbles(bool bubbles)
-{
- m_showBubbles = bubbles;
-}
-
-void GLWidget::paintQtLogo()
-{
- m_program1->enableAttributeArray(m_vertexAttr1);
- m_program1->enableAttributeArray(m_normalAttr1);
-
- m_vbo1.bind();
- // The data in the buffer is placed like this:
- // vertex1.x, vertex1.y, vertex1.z, normal1.x, normal1.y, normal1.z, vertex2.x, ...
- m_program1->setAttributeBuffer(m_vertexAttr1, GL_FLOAT, 0, 3, 6 * sizeof(GLfloat));
- m_program1->setAttributeBuffer(m_normalAttr1, GL_FLOAT, 3 * sizeof(GLfloat), 3, 6 * sizeof(GLfloat));
- m_vbo1.release();
-
- glDrawArrays(GL_TRIANGLES, 0, m_vertices.size());
-
- m_program1->disableAttributeArray(m_normalAttr1);
- m_program1->disableAttributeArray(m_vertexAttr1);
-}
-
-void GLWidget::paintTexturedCube()
-{
- m_texture->bind();
-
- if (!m_vbo2.isCreated()) {
- static GLfloat afVertices[] = {
- -0.5, 0.5, 0.5, 0.5,-0.5,0.5,-0.5,-0.5,0.5,
- 0.5, -0.5, 0.5, -0.5,0.5,0.5,0.5,0.5,0.5,
- -0.5, -0.5, -0.5, 0.5,-0.5,-0.5,-0.5,0.5,-0.5,
- 0.5, 0.5, -0.5, -0.5,0.5,-0.5,0.5,-0.5,-0.5,
-
- 0.5, -0.5, -0.5, 0.5,-0.5,0.5,0.5,0.5,-0.5,
- 0.5, 0.5, 0.5, 0.5,0.5,-0.5,0.5,-0.5,0.5,
- -0.5, 0.5, -0.5, -0.5,-0.5,0.5,-0.5,-0.5,-0.5,
- -0.5, -0.5, 0.5, -0.5,0.5,-0.5,-0.5,0.5,0.5,
-
- 0.5, 0.5, -0.5, -0.5, 0.5, 0.5, -0.5, 0.5, -0.5,
- -0.5, 0.5, 0.5, 0.5, 0.5, -0.5, 0.5, 0.5, 0.5,
- -0.5, -0.5, -0.5, -0.5, -0.5, 0.5, 0.5, -0.5, -0.5,
- 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.5
- };
-
- static GLfloat afTexCoord[] = {
- 0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f,
- 1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f,
- 1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f,
- 0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f,
-
- 1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f,
- 0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f,
- 0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f,
- 1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f,
-
- 0.0f,1.0f, 1.0f,0.0f, 1.0f,1.0f,
- 1.0f,0.0f, 0.0f,1.0f, 0.0f,0.0f,
- 1.0f,0.0f, 1.0f,1.0f, 0.0f,0.0f,
- 0.0f,1.0f, 0.0f,0.0f, 1.0f,1.0f
- };
-
- GLfloat afNormals[] = {
-
- 0,0,-1, 0,0,-1, 0,0,-1,
- 0,0,-1, 0,0,-1, 0,0,-1,
- 0,0,1, 0,0,1, 0,0,1,
- 0,0,1, 0,0,1, 0,0,1,
-
- -1,0,0, -1,0,0, -1,0,0,
- -1,0,0, -1,0,0, -1,0,0,
- 1,0,0, 1,0,0, 1,0,0,
- 1,0,0, 1,0,0, 1,0,0,
-
- 0,-1,0, 0,-1,0, 0,-1,0,
- 0,-1,0, 0,-1,0, 0,-1,0,
- 0,1,0, 0,1,0, 0,1,0,
- 0,1,0, 0,1,0, 0,1,0
- };
-
- m_vbo2.create();
- m_vbo2.bind();
- m_vbo2.allocate(36 * 8 * sizeof(GLfloat));
- m_vbo2.write(0, afVertices, sizeof(afVertices));
- m_vbo2.write(sizeof(afVertices), afTexCoord, sizeof(afTexCoord));
- m_vbo2.write(sizeof(afVertices) + sizeof(afTexCoord), afNormals, sizeof(afNormals));
- m_vbo2.release();
- }
-
- m_program2->setUniformValue(m_textureUniform2, 0); // use texture unit 0
-
- m_program2->enableAttributeArray(m_vertexAttr2);
- m_program2->enableAttributeArray(m_normalAttr2);
- m_program2->enableAttributeArray(m_texCoordAttr2);
-
- m_vbo2.bind();
- // In the buffer we first have 36 vertices (3 floats for each), then 36 texture
- // coordinates (2 floats for each), then 36 normals (3 floats for each).
- m_program2->setAttributeBuffer(m_vertexAttr2, GL_FLOAT, 0, 3);
- m_program2->setAttributeBuffer(m_texCoordAttr2, GL_FLOAT, 36 * 3 * sizeof(GLfloat), 2);
- m_program2->setAttributeBuffer(m_normalAttr2, GL_FLOAT, 36 * 5 * sizeof(GLfloat), 3);
- m_vbo2.release();
-
- glDrawArrays(GL_TRIANGLES, 0, 36);
-
- m_program2->disableAttributeArray(m_vertexAttr2);
- m_program2->disableAttributeArray(m_normalAttr2);
- m_program2->disableAttributeArray(m_texCoordAttr2);
-}
-
-void GLWidget::initializeGL()
-{
- initializeOpenGLFunctions();
-
- m_texture = new QOpenGLTexture(QImage(":/qt.png"));
-
- m_vshader1 = new QOpenGLShader(QOpenGLShader::Vertex);
- const char *vsrc1 =
- "attribute highp vec4 vertex;\n"
- "attribute mediump vec3 normal;\n"
- "uniform mediump mat4 matrix;\n"
- "varying mediump vec4 color;\n"
- "void main(void)\n"
- "{\n"
- " vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));\n"
- " float angle = max(dot(normal, toLight), 0.0);\n"
- " vec3 col = vec3(0.40, 1.0, 0.0);\n"
- " color = vec4(col * 0.2 + col * 0.8 * angle, 1.0);\n"
- " color = clamp(color, 0.0, 1.0);\n"
- " gl_Position = matrix * vertex;\n"
- "}\n";
- m_vshader1->compileSourceCode(vsrc1);
-
- m_fshader1 = new QOpenGLShader(QOpenGLShader::Fragment);
- const char *fsrc1 =
- "varying mediump vec4 color;\n"
- "void main(void)\n"
- "{\n"
- " gl_FragColor = color;\n"
- "}\n";
- m_fshader1->compileSourceCode(fsrc1);
-
- m_program1 = new QOpenGLShaderProgram;
- m_program1->addShader(m_vshader1);
- m_program1->addShader(m_fshader1);
- m_program1->link();
-
- m_vertexAttr1 = m_program1->attributeLocation("vertex");
- m_normalAttr1 = m_program1->attributeLocation("normal");
- m_matrixUniform1 = m_program1->uniformLocation("matrix");
-
- m_vshader2 = new QOpenGLShader(QOpenGLShader::Vertex);
- const char *vsrc2 =
- "attribute highp vec4 vertex;\n"
- "attribute highp vec4 texCoord;\n"
- "attribute mediump vec3 normal;\n"
- "uniform mediump mat4 matrix;\n"
- "varying highp vec4 texc;\n"
- "varying mediump float angle;\n"
- "void main(void)\n"
- "{\n"
- " vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));\n"
- " angle = max(dot(normal, toLight), 0.0);\n"
- " gl_Position = matrix * vertex;\n"
- " texc = texCoord;\n"
- "}\n";
- m_vshader2->compileSourceCode(vsrc2);
-
- m_fshader2 = new QOpenGLShader(QOpenGLShader::Fragment);
- const char *fsrc2 =
- "varying highp vec4 texc;\n"
- "uniform sampler2D tex;\n"
- "varying mediump float angle;\n"
- "void main(void)\n"
- "{\n"
- " highp vec3 color = texture2D(tex, texc.st).rgb;\n"
- " color = color * 0.2 + color * 0.8 * angle;\n"
- " gl_FragColor = vec4(clamp(color, 0.0, 1.0), 1.0);\n"
- "}\n";
- m_fshader2->compileSourceCode(fsrc2);
-
- m_program2 = new QOpenGLShaderProgram;
- m_program2->addShader(m_vshader2);
- m_program2->addShader(m_fshader2);
- m_program2->link();
-
- m_vertexAttr2 = m_program2->attributeLocation("vertex");
- m_normalAttr2 = m_program2->attributeLocation("normal");
- m_texCoordAttr2 = m_program2->attributeLocation("texCoord");
- m_matrixUniform2 = m_program2->uniformLocation("matrix");
- m_textureUniform2 = m_program2->uniformLocation("tex");
-
- m_fAngle = 0;
- m_fScale = 1;
-
- createGeometry();
-
- // Use a vertex buffer object. Client-side pointers are old-school and should be avoided.
- m_vbo1.create();
- m_vbo1.bind();
- // For the cube all the data belonging to the texture coordinates and
- // normals is placed separately, after the vertices. Here, for the Qt logo,
- // let's do something different and potentially more efficient: create a
- // properly interleaved data set.
- const int vertexCount = m_vertices.count();
- QList<GLfloat> buf;
- buf.resize(vertexCount * 3 * 2);
- GLfloat *p = buf.data();
- for (int i = 0; i < vertexCount; ++i) {
- *p++ = m_vertices[i].x();
- *p++ = m_vertices[i].y();
- *p++ = m_vertices[i].z();
- *p++ = m_normals[i].x();
- *p++ = m_normals[i].y();
- *p++ = m_normals[i].z();
- }
- m_vbo1.allocate(buf.constData(), buf.count() * sizeof(GLfloat));
- m_vbo1.release();
-
- createBubbles(bubbleNum - m_bubbles.count());
-
- // A well-behaved QOpenGLWidget releases OpenGL resources not only upon
- // destruction, but also when the associated OpenGL context disappears. If
- // the widget continues to exist, the context's destruction will be
- // followed by a call to initialize(). This is not strictly mandatory in
- // widgets that never change their parents.
- m_contextWatchConnection = QObject::connect(context(), &QOpenGLContext::aboutToBeDestroyed, context(), [this] { reset(); });
-}
-
-void GLWidget::paintGL()
-{
- createBubbles(bubbleNum - m_bubbles.count());
-
- QPainter painter;
- painter.begin(this);
-
- painter.beginNativePainting();
-
- glClearColor(m_background.redF(), m_background.greenF(), m_background.blueF(), m_transparent ? 0.0f : 1.0f);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glFrontFace(GL_CW);
- glCullFace(GL_FRONT);
- glEnable(GL_CULL_FACE);
- glEnable(GL_DEPTH_TEST);
-
- QMatrix4x4 modelview;
- modelview.rotate(m_fAngle, 0.0f, 1.0f, 0.0f);
- modelview.rotate(m_fAngle, 1.0f, 0.0f, 0.0f);
- modelview.rotate(m_fAngle, 0.0f, 0.0f, 1.0f);
- modelview.scale(m_fScale);
- modelview.translate(0.0f, -0.2f, 0.0f);
-
- if (m_qtLogo) {
- m_program1->bind();
- m_program1->setUniformValue(m_matrixUniform1, modelview);
- paintQtLogo();
- m_program1->release();
- } else {
- m_program2->bind();
- m_program2->setUniformValue(m_matrixUniform2, modelview);
- paintTexturedCube();
- m_program2->release();
- }
-
- glDisable(GL_DEPTH_TEST);
- glDisable(GL_CULL_FACE);
-
- painter.endNativePainting();
-
- if (m_showBubbles) {
- for (Bubble *bubble : qAsConst(m_bubbles))
- bubble->drawBubble(&painter);
- }
-
- if (const int elapsed = m_time.elapsed()) {
- QString framesPerSecond;
- framesPerSecond.setNum(m_frames /(elapsed / 1000.0), 'f', 2);
- painter.setPen(m_transparent ? Qt::black : Qt::white);
- painter.drawText(20, 40, framesPerSecond + " paintGL calls / s");
- }
-
- painter.end();
-
- for (Bubble *bubble : qAsConst(m_bubbles))
- bubble->move(rect());
-
- if (!(m_frames % 100)) {
- m_time.start();
- m_frames = 0;
- }
- m_fAngle += 1.0f;
- ++m_frames;
-
- // When requested, follow the ideal way to animate: Rely on
- // blocking swap and just schedule updates continuously.
- if (!m_mainWindow || !m_mainWindow->timerEnabled())
- update();
-}
-
-void GLWidget::createBubbles(int number)
-{
- for (int i = 0; i < number; ++i) {
- QPointF position(width()*(0.1 + QRandomGenerator::global()->bounded(0.8)),
- height()*(0.1 + QRandomGenerator::global()->bounded(0.8)));
- qreal radius = qMin(width(), height())*(0.0175 + QRandomGenerator::global()->bounded(0.0875));
- QPointF velocity(width()*0.0175*(-0.5 + QRandomGenerator::global()->bounded(1.0)),
- height()*0.0175*(-0.5 + QRandomGenerator::global()->bounded(1.0)));
-
- m_bubbles.append(new Bubble(position, radius, velocity));
- }
-}
-
-void GLWidget::createGeometry()
-{
- m_vertices.clear();
- m_normals.clear();
-
- qreal x1 = +0.06f;
- qreal y1 = -0.14f;
- qreal x2 = +0.14f;
- qreal y2 = -0.06f;
- qreal x3 = +0.08f;
- qreal y3 = +0.00f;
- qreal x4 = +0.30f;
- qreal y4 = +0.22f;
-
- quad(x1, y1, x2, y2, y2, x2, y1, x1);
- quad(x3, y3, x4, y4, y4, x4, y3, x3);
-
- extrude(x1, y1, x2, y2);
- extrude(x2, y2, y2, x2);
- extrude(y2, x2, y1, x1);
- extrude(y1, x1, x1, y1);
- extrude(x3, y3, x4, y4);
- extrude(x4, y4, y4, x4);
- extrude(y4, x4, y3, x3);
-
- const int NumSectors = 100;
- const qreal sectorAngle = 2 * qreal(M_PI) / NumSectors;
-
- for (int i = 0; i < NumSectors; ++i) {
- qreal angle = i * sectorAngle;
- qreal x5 = 0.30 * sin(angle);
- qreal y5 = 0.30 * cos(angle);
- qreal x6 = 0.20 * sin(angle);
- qreal y6 = 0.20 * cos(angle);
-
- angle += sectorAngle;
- qreal x7 = 0.20 * sin(angle);
- qreal y7 = 0.20 * cos(angle);
- qreal x8 = 0.30 * sin(angle);
- qreal y8 = 0.30 * cos(angle);
-
- quad(x5, y5, x6, y6, x7, y7, x8, y8);
-
- extrude(x6, y6, x7, y7);
- extrude(x8, y8, x5, y5);
- }
-
- for (int i = 0;i < m_vertices.size();i++)
- m_vertices[i] *= 2.0f;
-}
-
-void GLWidget::quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4)
-{
- m_vertices << QVector3D(x1, y1, -0.05f);
- m_vertices << QVector3D(x2, y2, -0.05f);
- m_vertices << QVector3D(x4, y4, -0.05f);
-
- m_vertices << QVector3D(x3, y3, -0.05f);
- m_vertices << QVector3D(x4, y4, -0.05f);
- m_vertices << QVector3D(x2, y2, -0.05f);
-
- QVector3D n = QVector3D::normal
- (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(x4 - x1, y4 - y1, 0.0f));
-
- m_normals << n;
- m_normals << n;
- m_normals << n;
-
- m_normals << n;
- m_normals << n;
- m_normals << n;
-
- m_vertices << QVector3D(x4, y4, 0.05f);
- m_vertices << QVector3D(x2, y2, 0.05f);
- m_vertices << QVector3D(x1, y1, 0.05f);
-
- m_vertices << QVector3D(x2, y2, 0.05f);
- m_vertices << QVector3D(x4, y4, 0.05f);
- m_vertices << QVector3D(x3, y3, 0.05f);
-
- n = QVector3D::normal
- (QVector3D(x2 - x4, y2 - y4, 0.0f), QVector3D(x1 - x4, y1 - y4, 0.0f));
-
- m_normals << n;
- m_normals << n;
- m_normals << n;
-
- m_normals << n;
- m_normals << n;
- m_normals << n;
-}
-
-void GLWidget::extrude(qreal x1, qreal y1, qreal x2, qreal y2)
-{
- m_vertices << QVector3D(x1, y1, +0.05f);
- m_vertices << QVector3D(x2, y2, +0.05f);
- m_vertices << QVector3D(x1, y1, -0.05f);
-
- m_vertices << QVector3D(x2, y2, -0.05f);
- m_vertices << QVector3D(x1, y1, -0.05f);
- m_vertices << QVector3D(x2, y2, +0.05f);
-
- QVector3D n = QVector3D::normal
- (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(0.0f, 0.0f, -0.1f));
-
- m_normals << n;
- m_normals << n;
- m_normals << n;
-
- m_normals << n;
- m_normals << n;
- m_normals << n;
-}
-
-void GLWidget::setTransparent(bool transparent)
-{
- setAttribute(Qt::WA_AlwaysStackOnTop, transparent);
- m_transparent = transparent;
- // Call update() on the top-level window after toggling AlwayStackOnTop to make sure
- // the entire backingstore is updated accordingly.
- window()->update();
-}
-
-void GLWidget::resizeGL(int, int)
-{
- if (m_mainWindow) {
- if (!m_btn) {
- m_btn = new QPushButton("\nAdd widget\n", this);
- connect(m_btn, &QPushButton::clicked, this, [this] { m_mainWindow->addNew(); });
- }
- m_btn->move(20, 80);
- if (!m_btn2) {
- m_btn2 = new QPushButton("\nI prefer tabbed widgets\n", this);
- connect(m_btn2, &QPushButton::clicked, this, [this] { m_mainWindow->showNewWindow(); });
- }
- m_btn2->move(20, 160);
- }
-}
diff --git a/examples/opengl/qopenglwidget/glwidget.h b/examples/opengl/qopenglwidget/glwidget.h
deleted file mode 100644
index de9d11b94c..0000000000
--- a/examples/opengl/qopenglwidget/glwidget.h
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef GLWIDGET_H
-#define GLWIDGET_H
-
-#include <QOpenGLWidget>
-#include <QOpenGLFunctions>
-#include <QOpenGLBuffer>
-#include <QVector3D>
-#include <QMatrix4x4>
-#include <QElapsedTimer>
-#include <QList>
-#include <QPushButton>
-
-class Bubble;
-class MainWindow;
-
-QT_FORWARD_DECLARE_CLASS(QOpenGLTexture)
-QT_FORWARD_DECLARE_CLASS(QOpenGLShader)
-QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)
-
-class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions
-{
- Q_OBJECT
-public:
- GLWidget(MainWindow *maybeMainWindow, const QColor &background);
- ~GLWidget();
-
-public slots:
- void setScaling(int scale);
- void setLogo();
- void setTexture();
- void setShowBubbles(bool);
- void setTransparent(bool transparent);
-
-protected:
- void resizeGL(int w, int h) override;
- void paintGL() override;
- void initializeGL() override;
-
-private:
- void paintTexturedCube();
- void paintQtLogo();
- void createGeometry();
- void createBubbles(int number);
- void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4);
- void extrude(qreal x1, qreal y1, qreal x2, qreal y2);
- void reset();
-
- MainWindow *m_mainWindow;
- qreal m_fAngle = 0;
- qreal m_fScale = 1;
- bool m_showBubbles = true;
- QList<QVector3D> m_vertices;
- QList<QVector3D> m_normals;
- bool m_qtLogo = true;
- QList<Bubble *> m_bubbles;
- int m_frames = 0;
- QElapsedTimer m_time;
- QOpenGLShader *m_vshader1 = nullptr;
- QOpenGLShader *m_fshader1 = nullptr;
- QOpenGLShader *m_vshader2 = nullptr;
- QOpenGLShader *m_fshader2 = nullptr;
- QOpenGLShaderProgram *m_program1 = nullptr;
- QOpenGLShaderProgram *m_program2 = nullptr;
- QOpenGLTexture *m_texture = nullptr;
- QOpenGLBuffer m_vbo1;
- QOpenGLBuffer m_vbo2;
- int m_vertexAttr1 = 0;
- int m_normalAttr1 = 0;
- int m_matrixUniform1 = 0;
- int m_vertexAttr2 = 0;
- int m_normalAttr2 = 0;
- int m_texCoordAttr2 = 0;
- int m_matrixUniform2 = 0;
- int m_textureUniform2 = 0;
- bool m_transparent = false;
- QPushButton *m_btn = nullptr;
- QPushButton *m_btn2 = nullptr;
- QColor m_background;
- QMetaObject::Connection m_contextWatchConnection;
-};
-
-#endif
diff --git a/examples/opengl/qopenglwidget/main.cpp b/examples/opengl/qopenglwidget/main.cpp
deleted file mode 100644
index 04f1c57f08..0000000000
--- a/examples/opengl/qopenglwidget/main.cpp
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QApplication>
-#include <QMainWindow>
-#include <QColorSpace>
-#include <QSurfaceFormat>
-#include <QCommandLineParser>
-#include <QCommandLineOption>
-#include "mainwindow.h"
-
-int main( int argc, char ** argv )
-{
- Q_INIT_RESOURCE(texture);
- QApplication a( argc, argv );
-
- QCoreApplication::setApplicationName("Qt QOpenGLWidget Example");
- QCoreApplication::setOrganizationName("QtProject");
- QCoreApplication::setApplicationVersion(QT_VERSION_STR);
- QCommandLineParser parser;
- parser.setApplicationDescription(QCoreApplication::applicationName());
- parser.addHelpOption();
- parser.addVersionOption();
- QCommandLineOption multipleSampleOption("multisample", "Multisampling");
- parser.addOption(multipleSampleOption);
- QCommandLineOption srgbOption("srgb", "Use sRGB Color Space");
- parser.addOption(srgbOption);
- parser.process(a);
-
- QSurfaceFormat format;
- format.setDepthBufferSize(24);
- format.setStencilBufferSize(8);
- if (parser.isSet(srgbOption))
- format.setColorSpace(QColorSpace::SRgb);
- if (parser.isSet(multipleSampleOption))
- format.setSamples(4);
- QSurfaceFormat::setDefaultFormat(format);
-
- MainWindow mw;
- mw.resize(1280, 720);
- mw.show();
- return a.exec();
-}
diff --git a/examples/opengl/qopenglwidget/mainwindow.cpp b/examples/opengl/qopenglwidget/mainwindow.cpp
deleted file mode 100644
index 409ff7b507..0000000000
--- a/examples/opengl/qopenglwidget/mainwindow.cpp
+++ /dev/null
@@ -1,188 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "mainwindow.h"
-
-#include <QApplication>
-#include <QMenuBar>
-#include <QGroupBox>
-#include <QSlider>
-#include <QLabel>
-#include <QCheckBox>
-#include <QRandomGenerator>
-#include <QSpinBox>
-#include <QScrollArea>
-#include <QTabWidget>
-#include <QTabBar>
-#include <QToolButton>
-
-#include "glwidget.h"
-
-MainWindow::MainWindow()
- : m_nextX(1), m_nextY(1)
-{
- GLWidget *glwidget = new GLWidget(this, qRgb(20, 20, 50));
- m_glWidgets << glwidget;
- QLabel *label = new QLabel(this);
- m_timer = new QTimer(this);
- QSlider *slider = new QSlider(this);
- slider->setOrientation(Qt::Horizontal);
-
- QLabel *updateLabel = new QLabel("Update interval");
- QSpinBox *updateInterval = new QSpinBox(this);
- updateInterval->setSuffix(" ms");
- updateInterval->setValue(10);
- updateInterval->setToolTip("Interval for the timer that calls update().\n"
- "Note that on most systems the swap will block to wait for vsync\n"
- "and therefore an interval < 16 ms will likely lead to a 60 FPS update rate.");
- QGroupBox *updateGroupBox = new QGroupBox(this);
- QCheckBox *timerBased = new QCheckBox("Use timer", this);
- timerBased->setChecked(false);
- timerBased->setToolTip("Toggles using a timer to trigger update().\n"
- "When not set, each paintGL() schedules the next update immediately,\n"
- "expecting the blocking swap to throttle the thread.\n"
- "This shows how unnecessary the timer is in most cases.");
- QCheckBox *transparent = new QCheckBox("Transparent background", this);
- transparent->setToolTip("Toggles Qt::WA_AlwaysStackOnTop and transparent clear color for glClear().\n"
- "Note how the button on top stacks incorrectly when enabling this.");
- QHBoxLayout *updateLayout = new QHBoxLayout;
- updateLayout->addWidget(updateLabel);
- updateLayout->addWidget(updateInterval);
- updateLayout->addWidget(timerBased);
- updateLayout->addWidget(transparent);
- updateGroupBox->setLayout(updateLayout);
-
- slider->setRange(0, 50);
- slider->setSliderPosition(30);
- m_timer->setInterval(10);
- label->setText("A scrollable QOpenGLWidget");
- label->setAlignment(Qt::AlignHCenter);
-
- QGroupBox * groupBox = new QGroupBox(this);
- setCentralWidget(groupBox);
- groupBox->setTitle("QOpenGLWidget Example");
-
- m_layout = new QGridLayout(groupBox);
-
- QScrollArea *scrollArea = new QScrollArea;
- scrollArea->setWidget(glwidget);
-
- m_layout->addWidget(scrollArea,1,0,8,1);
- m_layout->addWidget(label,9,0,1,1);
- m_layout->addWidget(updateGroupBox, 10, 0, 1, 1);
- m_layout->addWidget(slider, 11,0,1,1);
-
- groupBox->setLayout(m_layout);
-
-
- QMenu *fileMenu = menuBar()->addMenu("&File");
- fileMenu->addAction("E&xit", this, &QWidget::close);
- QMenu *showMenu = menuBar()->addMenu("&Show");
- showMenu->addAction("Show 3D Logo", glwidget, &GLWidget::setLogo);
- showMenu->addAction("Show 2D Texture", glwidget, &GLWidget::setTexture);
- QAction *showBubbles = showMenu->addAction("Show bubbles", glwidget, &GLWidget::setShowBubbles);
- showBubbles->setCheckable(true);
- showBubbles->setChecked(true);
- showMenu->addAction("Open tab window", this, &MainWindow::showNewWindow);
- QMenu *helpMenu = menuBar()->addMenu("&Help");
- helpMenu->addAction("About Qt", qApp, &QApplication::aboutQt);
-
- connect(m_timer, &QTimer::timeout, glwidget, QOverload<>::of(&QWidget::update));
-
- connect(slider, &QAbstractSlider::valueChanged, glwidget, &GLWidget::setScaling);
- connect(transparent, &QCheckBox::toggled, glwidget, &GLWidget::setTransparent);
- connect(updateInterval, &QSpinBox::valueChanged,
- this, &MainWindow::updateIntervalChanged);
- connect(timerBased, &QCheckBox::toggled, this, &MainWindow::timerUsageChanged);
- connect(timerBased, &QCheckBox::toggled, updateInterval, &QWidget::setEnabled);
-
- if (timerBased->isChecked())
- m_timer->start();
- else
- updateInterval->setEnabled(false);
-}
-
-void MainWindow::updateIntervalChanged(int value)
-{
- m_timer->setInterval(value);
- if (m_timer->isActive())
- m_timer->start();
-}
-
-void MainWindow::addNew()
-{
- if (m_nextY == 4)
- return;
- GLWidget *w = new GLWidget(nullptr, qRgb(QRandomGenerator::global()->bounded(256),
- QRandomGenerator::global()->bounded(256),
- QRandomGenerator::global()->bounded(256)));
- m_glWidgets << w;
- connect(m_timer, &QTimer::timeout, w, QOverload<>::of(&QWidget::update));
- m_layout->addWidget(w, m_nextY, m_nextX, 1, 1);
- if (m_nextX == 3) {
- m_nextX = 1;
- ++m_nextY;
- } else {
- ++m_nextX;
- }
-}
-
-void MainWindow::timerUsageChanged(bool enabled)
-{
- if (enabled) {
- m_timer->start();
- } else {
- m_timer->stop();
- for (QOpenGLWidget *w : qAsConst(m_glWidgets))
- w->update();
- }
-}
-
-void MainWindow::resizeEvent(QResizeEvent *)
-{
- m_glWidgets[0]->setMinimumSize(size() + QSize(128, 128));
-}
-
-void MainWindow::showNewWindow()
-{
- QTabWidget *tabs = new QTabWidget;
- tabs->resize(800, 600);
-
- QToolButton *tb = new QToolButton;
- tb->setText(QLatin1String("+"));
- tabs->addTab(new QLabel(QLatin1String("Add OpenGL widgets with +")), QString());
- tabs->setTabEnabled(0, false);
- tabs->tabBar()->setTabButton(0, QTabBar::RightSide, tb);
- tabs->tabBar()->setTabsClosable(true);
- QObject::connect(tabs->tabBar(), &QTabBar::tabCloseRequested, tabs, [tabs](int index) {
- tabs->widget(index)->deleteLater();
- });
-
- const QString msgToTopLevel = QLatin1String("Break out to top-level window");
- const QString msgFromTopLevel = QLatin1String("Move back under tab widget");
-
- QObject::connect(tb, &QAbstractButton::clicked, tabs, [=] {
- GLWidget *glwidget = new GLWidget(nullptr, Qt::blue);
- glwidget->resize(tabs->size());
- glwidget->setWindowTitle(QString::asprintf("QOpenGLWidget %p", glwidget));
-
- QPushButton *btn = new QPushButton(msgToTopLevel, glwidget);
- connect(btn, &QPushButton::clicked, glwidget, [=] {
- if (glwidget->parent()) {
- glwidget->setAttribute(Qt::WA_DeleteOnClose, true);
- glwidget->setParent(nullptr);
- glwidget->show();
- btn->setText(msgFromTopLevel);
- } else {
- glwidget->setAttribute(Qt::WA_DeleteOnClose, false);
- tabs->addTab(glwidget, glwidget->windowTitle());
- btn->setText(msgToTopLevel);
- }
- });
-
- tabs->setCurrentIndex(tabs->addTab(glwidget, glwidget->windowTitle()));
- });
-
- tabs->setAttribute(Qt::WA_DeleteOnClose);
- tabs->show();
-}
diff --git a/examples/opengl/qopenglwidget/mainwindow.h b/examples/opengl/qopenglwidget/mainwindow.h
deleted file mode 100644
index 85f11ad764..0000000000
--- a/examples/opengl/qopenglwidget/mainwindow.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QMainWindow>
-#include <QTimer>
-#include <QGridLayout>
-
-QT_FORWARD_DECLARE_CLASS(QOpenGLWidget)
-
-class MainWindow : public QMainWindow
-{
- Q_OBJECT
-
-public:
- MainWindow();
- void addNew();
- bool timerEnabled() const { return m_timer->isActive(); }
-
- void resizeEvent(QResizeEvent *);
-
-public slots:
- void showNewWindow();
-
-private slots:
- void updateIntervalChanged(int value);
- void timerUsageChanged(bool enabled);
-
-private:
- QTimer *m_timer;
- QGridLayout *m_layout;
- int m_nextX;
- int m_nextY;
- QList<QOpenGLWidget *> m_glWidgets;
-};
-
-#endif
diff --git a/examples/opengl/qopenglwidget/qopenglwidget.pro b/examples/opengl/qopenglwidget/qopenglwidget.pro
deleted file mode 100644
index 7ac546d7ce..0000000000
--- a/examples/opengl/qopenglwidget/qopenglwidget.pro
+++ /dev/null
@@ -1,15 +0,0 @@
-QT += widgets opengl openglwidgets
-
-SOURCES += main.cpp \
- glwidget.cpp \
- mainwindow.cpp \
- bubble.cpp
-
-HEADERS += glwidget.h \
- mainwindow.h \
- bubble.h
-
-RESOURCES += texture.qrc
-
-target.path = $$[QT_INSTALL_EXAMPLES]/opengl/qopenglwidget
-INSTALLS += target
diff --git a/examples/opengl/qopenglwidget/qt.png b/examples/opengl/qopenglwidget/qt.png
deleted file mode 100644
index 4f68e162de..0000000000
--- a/examples/opengl/qopenglwidget/qt.png
+++ /dev/null
Binary files differ
diff --git a/examples/opengl/qopenglwidget/texture.qrc b/examples/opengl/qopenglwidget/texture.qrc
deleted file mode 100644
index ff1d0e535f..0000000000
--- a/examples/opengl/qopenglwidget/texture.qrc
+++ /dev/null
@@ -1,5 +0,0 @@
-<!DOCTYPE RCC><RCC version="1.0">
-<qresource>
- <file>qt.png</file>
-</qresource>
-</RCC>
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 16:31:20 +0000