From 3b015718b0d156bbedafd3f83f069ce5a360d5cb Mon Sep 17 00:00:00 2001 From: Laszlo Agocs Date: Wed, 22 Mar 2023 16:36:36 +0100 Subject: Move hellowindow and qopenglwindow to be a manual tests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Pick-to: 6.5 Change-Id: I8d1517ee57df9b2dee0486f47562b0754e9dcbad Reviewed-by: Christian Strømme --- examples/opengl/CMakeLists.txt | 2 - examples/opengl/hellowindow/CMakeLists.txt | 39 --- examples/opengl/hellowindow/hellowindow.cpp | 305 --------------------- examples/opengl/hellowindow/hellowindow.h | 77 ------ examples/opengl/hellowindow/hellowindow.pro | 9 - examples/opengl/hellowindow/main.cpp | 125 --------- examples/opengl/opengl.pro | 6 +- examples/opengl/qopenglwindow/CMakeLists.txt | 49 ---- examples/opengl/qopenglwindow/background.frag | 30 -- .../opengl/qopenglwindow/background_renderer.cpp | 167 ----------- .../opengl/qopenglwindow/background_renderer.h | 46 ---- examples/opengl/qopenglwindow/main.cpp | 154 ----------- examples/opengl/qopenglwindow/qopenglwindow.pro | 16 -- examples/opengl/qopenglwindow/shaders.qrc | 5 - .../examples/opengl/hellowindow/CMakeLists.txt | 39 +++ .../examples/opengl/hellowindow/hellowindow.cpp | 305 +++++++++++++++++++++ .../examples/opengl/hellowindow/hellowindow.h | 77 ++++++ .../examples/opengl/hellowindow/hellowindow.pro | 9 + tests/manual/examples/opengl/hellowindow/main.cpp | 125 +++++++++ .../examples/opengl/qopenglwindow/CMakeLists.txt | 49 ++++ .../examples/opengl/qopenglwindow/background.frag | 30 ++ .../opengl/qopenglwindow/background_renderer.cpp | 167 +++++++++++ .../opengl/qopenglwindow/background_renderer.h | 46 ++++ .../manual/examples/opengl/qopenglwindow/main.cpp | 154 +++++++++++ .../opengl/qopenglwindow/qopenglwindow.pro | 16 ++ .../examples/opengl/qopenglwindow/shaders.qrc | 5 + 26 files changed, 1024 insertions(+), 1028 deletions(-) delete mode 100644 examples/opengl/hellowindow/CMakeLists.txt delete mode 100644 examples/opengl/hellowindow/hellowindow.cpp delete mode 100644 examples/opengl/hellowindow/hellowindow.h delete mode 100644 examples/opengl/hellowindow/hellowindow.pro delete mode 100644 examples/opengl/hellowindow/main.cpp delete mode 100644 examples/opengl/qopenglwindow/CMakeLists.txt delete mode 100644 examples/opengl/qopenglwindow/background.frag delete mode 100644 examples/opengl/qopenglwindow/background_renderer.cpp delete mode 100644 examples/opengl/qopenglwindow/background_renderer.h delete mode 100644 examples/opengl/qopenglwindow/main.cpp delete mode 100644 examples/opengl/qopenglwindow/qopenglwindow.pro delete mode 100644 examples/opengl/qopenglwindow/shaders.qrc create mode 100644 tests/manual/examples/opengl/hellowindow/CMakeLists.txt create mode 100644 tests/manual/examples/opengl/hellowindow/hellowindow.cpp create mode 100644 tests/manual/examples/opengl/hellowindow/hellowindow.h create mode 100644 tests/manual/examples/opengl/hellowindow/hellowindow.pro create mode 100644 tests/manual/examples/opengl/hellowindow/main.cpp create mode 100644 tests/manual/examples/opengl/qopenglwindow/CMakeLists.txt create mode 100644 tests/manual/examples/opengl/qopenglwindow/background.frag create mode 100644 tests/manual/examples/opengl/qopenglwindow/background_renderer.cpp create mode 100644 tests/manual/examples/opengl/qopenglwindow/background_renderer.h create mode 100644 tests/manual/examples/opengl/qopenglwindow/main.cpp create mode 100644 tests/manual/examples/opengl/qopenglwindow/qopenglwindow.pro create mode 100644 tests/manual/examples/opengl/qopenglwindow/shaders.qrc diff --git a/examples/opengl/CMakeLists.txt b/examples/opengl/CMakeLists.txt index b04f98e6b0..721cfec8c8 100644 --- a/examples/opengl/CMakeLists.txt +++ b/examples/opengl/CMakeLists.txt @@ -1,10 +1,8 @@ # Copyright (C) 2022 The Qt Company Ltd. # SPDX-License-Identifier: BSD-3-Clause -qt_internal_add_example(hellowindow) qt_internal_add_example(paintedwindow) qt_internal_add_example(openglwindow) -qt_internal_add_example(qopenglwindow) if(TARGET Qt6::Widgets) qt_internal_add_example(contextinfo) qt_internal_add_example(2dpainting) diff --git a/examples/opengl/hellowindow/CMakeLists.txt b/examples/opengl/hellowindow/CMakeLists.txt deleted file mode 100644 index 551cf9faef..0000000000 --- a/examples/opengl/hellowindow/CMakeLists.txt +++ /dev/null @@ -1,39 +0,0 @@ -# Copyright (C) 2022 The Qt Company Ltd. -# SPDX-License-Identifier: BSD-3-Clause - -cmake_minimum_required(VERSION 3.16) -project(hellowindow LANGUAGES CXX) - -if(NOT DEFINED INSTALL_EXAMPLESDIR) - set(INSTALL_EXAMPLESDIR "examples") -endif() - -set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/hellowindow") - -find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) - -qt_standard_project_setup() - -qt_add_executable(hellowindow - hellowindow.cpp hellowindow.h - main.cpp -) - -set_target_properties(hellowindow PROPERTIES - WIN32_EXECUTABLE TRUE - MACOSX_BUNDLE TRUE -) - -target_link_libraries(hellowindow PRIVATE - Qt6::Core - Qt6::CorePrivate - Qt6::Gui - Qt6::GuiPrivate - Qt6::OpenGL -) - -install(TARGETS hellowindow - RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" - BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" - LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" -) diff --git a/examples/opengl/hellowindow/hellowindow.cpp b/examples/opengl/hellowindow/hellowindow.cpp deleted file mode 100644 index c9cad95563..0000000000 --- a/examples/opengl/hellowindow/hellowindow.cpp +++ /dev/null @@ -1,305 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include "hellowindow.h" - -#include -#include -#include -#include -#include - -Renderer::Renderer(const QSurfaceFormat &format, Renderer *share, QScreen *screen) - : m_initialized(false) - , m_format(format) -{ - m_context = new QOpenGLContext(this); - if (screen) - m_context->setScreen(screen); - m_context->setFormat(format); - if (share) - m_context->setShareContext(share->m_context); - m_context->create(); - - m_backgroundColor = QColor::fromRgbF(0.1f, 0.1f, 0.2f, 1.0f); - m_backgroundColor.setRed(QRandomGenerator::global()->bounded(64)); - m_backgroundColor.setGreen(QRandomGenerator::global()->bounded(128)); - m_backgroundColor.setBlue(QRandomGenerator::global()->bounded(256)); -} - -HelloWindow::HelloWindow(const QSharedPointer &renderer, QScreen *screen) - : m_colorIndex(0), m_renderer(renderer) -{ - setSurfaceType(QWindow::OpenGLSurface); - setFlags(Qt::Window | Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint); - - setGeometry(QRect(10, 10, 640, 480)); - - setFormat(renderer->format()); - if (screen) - setScreen(screen); - - create(); - - updateColor(); - - connect(renderer.data(), &Renderer::requestUpdate, this, &QWindow::requestUpdate); -} - -void HelloWindow::exposeEvent(QExposeEvent *) -{ - if (isExposed()) - render(); -} - -bool HelloWindow::event(QEvent *ev) -{ - if (ev->type() == QEvent::UpdateRequest && isExposed()) - render(); - return QWindow::event(ev); -} - -void HelloWindow::render() -{ - static QElapsedTimer timer; - if (!timer.isValid()) - timer.start(); - qreal a = (qreal)(((timer.elapsed() * 3) % 36000) / 100.0); - auto call = [this, r = m_renderer.data(), a, c = color()]() { r->render(this, a, c); }; - QMetaObject::invokeMethod(m_renderer.data(), call); -} - -void HelloWindow::mousePressEvent(QMouseEvent *) -{ - updateColor(); -} - -QColor HelloWindow::color() const -{ - return m_color; -} - -void HelloWindow::updateColor() -{ - QColor colors[] = - { - QColor(100, 255, 0), - QColor(0, 100, 255) - }; - - m_color = colors[m_colorIndex]; - m_colorIndex = 1 - m_colorIndex; -} - -void Renderer::render(HelloWindow *surface, qreal angle, const QColor &color) -{ - if (!m_context->makeCurrent(surface)) - return; - - QSize viewSize = surface->size(); - - if (!m_initialized) { - initialize(); - m_initialized = true; - } - - QOpenGLFunctions *f = m_context->functions(); - f->glViewport(0, 0, viewSize.width() * surface->devicePixelRatio(), viewSize.height() * surface->devicePixelRatio()); - f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - f->glClearColor(m_backgroundColor.redF(), m_backgroundColor.greenF(), m_backgroundColor.blueF(), m_backgroundColor.alphaF()); - f->glFrontFace(GL_CW); - f->glCullFace(GL_FRONT); - f->glEnable(GL_CULL_FACE); - f->glEnable(GL_DEPTH_TEST); - - m_program->bind(); - m_vbo.bind(); - - m_program->enableAttributeArray(vertexAttr); - m_program->enableAttributeArray(normalAttr); - m_program->setAttributeBuffer(vertexAttr, GL_FLOAT, 0, 3); - const int verticesSize = vertices.count() * 3 * sizeof(GLfloat); - m_program->setAttributeBuffer(normalAttr, GL_FLOAT, verticesSize, 3); - - QMatrix4x4 modelview; - modelview.rotate(angle, 0.0f, 1.0f, 0.0f); - modelview.rotate(angle, 1.0f, 0.0f, 0.0f); - modelview.rotate(angle, 0.0f, 0.0f, 1.0f); - modelview.translate(0.0f, -0.2f, 0.0f); - - m_program->setUniformValue(matrixUniform, modelview); - m_program->setUniformValue(colorUniform, color); - - m_context->functions()->glDrawArrays(GL_TRIANGLES, 0, vertices.size()); - - m_context->swapBuffers(surface); - - emit requestUpdate(); -} - -Q_GLOBAL_STATIC(QMutex, initMutex) - -void Renderer::initialize() -{ - // Threaded shader compilation can confuse some drivers. Avoid it. - QMutexLocker lock(initMutex()); - - QOpenGLShader *vshader = new QOpenGLShader(QOpenGLShader::Vertex, this); - vshader->compileSourceCode( - "attribute highp vec4 vertex;" - "attribute mediump vec3 normal;" - "uniform mediump mat4 matrix;" - "uniform lowp vec4 sourceColor;" - "varying mediump vec4 color;" - "void main(void)" - "{" - " vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));" - " float angle = max(dot(normal, toLight), 0.0);" - " vec3 col = sourceColor.rgb;" - " color = vec4(col * 0.2 + col * 0.8 * angle, 1.0);" - " color = clamp(color, 0.0, 1.0);" - " gl_Position = matrix * vertex;" - "}"); - - QOpenGLShader *fshader = new QOpenGLShader(QOpenGLShader::Fragment, this); - fshader->compileSourceCode( - "varying mediump vec4 color;" - "void main(void)" - "{" - " gl_FragColor = color;" - "}"); - - m_program = new QOpenGLShaderProgram(this); - m_program->addShader(vshader); - m_program->addShader(fshader); - m_program->link(); - m_program->bind(); - - vertexAttr = m_program->attributeLocation("vertex"); - normalAttr = m_program->attributeLocation("normal"); - matrixUniform = m_program->uniformLocation("matrix"); - colorUniform = m_program->uniformLocation("sourceColor"); - - createGeometry(); - - m_vbo.create(); - m_vbo.bind(); - const int verticesSize = vertices.count() * 3 * sizeof(GLfloat); - m_vbo.allocate(verticesSize * 2); - m_vbo.write(0, vertices.constData(), verticesSize); - m_vbo.write(verticesSize, normals.constData(), verticesSize); -} - -void Renderer::createGeometry() -{ - vertices.clear(); - 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 * qSin(angle); - qreal y5 = 0.30 * qCos(angle); - qreal x6 = 0.20 * qSin(angle); - qreal y6 = 0.20 * qCos(angle); - - angle += sectorAngle; - qreal x7 = 0.20 * qSin(angle); - qreal y7 = 0.20 * qCos(angle); - qreal x8 = 0.30 * qSin(angle); - qreal y8 = 0.30 * qCos(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 < vertices.size();i++) - vertices[i] *= 2.0f; -} - -void Renderer::quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4) -{ - vertices << QVector3D(x1, y1, -0.05f); - vertices << QVector3D(x2, y2, -0.05f); - vertices << QVector3D(x4, y4, -0.05f); - - vertices << QVector3D(x3, y3, -0.05f); - vertices << QVector3D(x4, y4, -0.05f); - vertices << QVector3D(x2, y2, -0.05f); - - QVector3D n = QVector3D::normal - (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(x4 - x1, y4 - y1, 0.0f)); - - normals << n; - normals << n; - normals << n; - - normals << n; - normals << n; - normals << n; - - vertices << QVector3D(x4, y4, 0.05f); - vertices << QVector3D(x2, y2, 0.05f); - vertices << QVector3D(x1, y1, 0.05f); - - vertices << QVector3D(x2, y2, 0.05f); - vertices << QVector3D(x4, y4, 0.05f); - vertices << QVector3D(x3, y3, 0.05f); - - n = QVector3D::normal - (QVector3D(x2 - x4, y2 - y4, 0.0f), QVector3D(x1 - x4, y1 - y4, 0.0f)); - - normals << n; - normals << n; - normals << n; - - normals << n; - normals << n; - normals << n; -} - -void Renderer::extrude(qreal x1, qreal y1, qreal x2, qreal y2) -{ - vertices << QVector3D(x1, y1, +0.05f); - vertices << QVector3D(x2, y2, +0.05f); - vertices << QVector3D(x1, y1, -0.05f); - - vertices << QVector3D(x2, y2, -0.05f); - vertices << QVector3D(x1, y1, -0.05f); - vertices << QVector3D(x2, y2, +0.05f); - - QVector3D n = QVector3D::normal - (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(0.0f, 0.0f, -0.1f)); - - normals << n; - normals << n; - normals << n; - - normals << n; - normals << n; - normals << n; -} diff --git a/examples/opengl/hellowindow/hellowindow.h b/examples/opengl/hellowindow/hellowindow.h deleted file mode 100644 index 1e117ab2e0..0000000000 --- a/examples/opengl/hellowindow/hellowindow.h +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#ifndef HELLOWINDOW_H -#define HELLOWINDOW_H - -#include - -#include -#include -#include -#include -#include -#include - -class HelloWindow; - -class Renderer : public QObject -{ - Q_OBJECT - -public: - explicit Renderer(const QSurfaceFormat &format, Renderer *share = nullptr, - QScreen *screen = nullptr); - - QSurfaceFormat format() const { return m_format; } - -public slots: - void render(HelloWindow *surface, qreal angle, const QColor &color); - -signals: - void requestUpdate(); - -private: - void initialize(); - - 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); - - QList vertices; - QList normals; - int vertexAttr; - int normalAttr; - int matrixUniform; - int colorUniform; - - bool m_initialized; - QSurfaceFormat m_format; - QOpenGLContext *m_context; - QOpenGLShaderProgram *m_program; - QOpenGLBuffer m_vbo; - QColor m_backgroundColor; -}; - -class HelloWindow : public QWindow -{ -public: - explicit HelloWindow(const QSharedPointer &renderer, QScreen *screen = nullptr); - - QColor color() const; - void updateColor(); - -protected: - bool event(QEvent *ev) override; - void exposeEvent(QExposeEvent *event) override; - void mousePressEvent(QMouseEvent *) override; - void render(); - -private: - int m_colorIndex; - QColor m_color; - const QSharedPointer m_renderer; -}; - -#endif // HELLOWINDOW_H diff --git a/examples/opengl/hellowindow/hellowindow.pro b/examples/opengl/hellowindow/hellowindow.pro deleted file mode 100644 index 27c274a378..0000000000 --- a/examples/opengl/hellowindow/hellowindow.pro +++ /dev/null @@ -1,9 +0,0 @@ -QT += gui-private core-private opengl - -HEADERS += hellowindow.h -SOURCES += hellowindow.cpp main.cpp - -# install -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/hellowindow -INSTALLS += target - diff --git a/examples/opengl/hellowindow/main.cpp b/examples/opengl/hellowindow/main.cpp deleted file mode 100644 index ee4729a493..0000000000 --- a/examples/opengl/hellowindow/main.cpp +++ /dev/null @@ -1,125 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include "hellowindow.h" - -#include - -#include -#include -#include -#include -#include - -int main(int argc, char *argv[]) -{ - QGuiApplication app(argc, argv); - - QCoreApplication::setApplicationName("Qt HelloWindow GL Example"); - QCoreApplication::setOrganizationName("QtProject"); - QCoreApplication::setApplicationVersion(QT_VERSION_STR); - QCommandLineParser parser; - parser.setApplicationDescription(QCoreApplication::applicationName()); - parser.addHelpOption(); - parser.addVersionOption(); - QCommandLineOption multipleOption("multiple", "Create multiple windows"); - parser.addOption(multipleOption); - QCommandLineOption multipleSampleOption("multisample", "Multisampling"); - parser.addOption(multipleSampleOption); - QCommandLineOption multipleScreenOption("multiscreen", "Run on multiple screens"); - parser.addOption(multipleScreenOption); - QCommandLineOption timeoutOption("timeout", "Close after 10s"); - parser.addOption(timeoutOption); - parser.process(app); - - // Some platforms can only have one window per screen. Therefore we need to differentiate. - const bool multipleWindows = parser.isSet(multipleOption); - const bool multipleScreens = parser.isSet(multipleScreenOption); - - QScreen *screen = QGuiApplication::primaryScreen(); - - QRect screenGeometry = screen->availableGeometry(); - - QSurfaceFormat format; - format.setDepthBufferSize(16); - if (parser.isSet(multipleSampleOption)) - format.setSamples(4); - - QPoint center = QPoint(screenGeometry.center().x(), screenGeometry.top() + 80); - QSize windowSize(400, 320); - int delta = 40; - - QList windows; - QSharedPointer rendererA(new Renderer(format)); - - HelloWindow *windowA = new HelloWindow(rendererA); - windowA->setGeometry(QRect(center, windowSize).translated(-windowSize.width() - delta / 2, 0)); - windowA->setTitle(QStringLiteral("Thread A - Context A")); - windowA->setVisible(true); - windows.prepend(windowA); - - QList renderThreads; - if (multipleWindows) { - QSharedPointer rendererB(new Renderer(format, rendererA.data())); - - QThread *renderThread = new QThread; - rendererB->moveToThread(renderThread); - renderThreads << renderThread; - - HelloWindow *windowB = new HelloWindow(rendererA); - windowB->setGeometry(QRect(center, windowSize).translated(delta / 2, 0)); - windowB->setTitle(QStringLiteral("Thread A - Context A")); - windowB->setVisible(true); - windows.prepend(windowB); - - HelloWindow *windowC = new HelloWindow(rendererB); - windowC->setGeometry(QRect(center, windowSize).translated(-windowSize.width() / 2, windowSize.height() + delta)); - windowC->setTitle(QStringLiteral("Thread B - Context B")); - windowC->setVisible(true); - windows.prepend(windowC); - } - if (multipleScreens) { - for (int i = 1; i < QGuiApplication::screens().size(); ++i) { - QScreen *screen = QGuiApplication::screens().at(i); - QSharedPointer renderer(new Renderer(format, rendererA.data(), screen)); - - QThread *renderThread = new QThread; - renderer->moveToThread(renderThread); - renderThreads.prepend(renderThread); - - QRect screenGeometry = screen->availableGeometry(); - QPoint center = screenGeometry.center(); - - QSize windowSize = screenGeometry.size() * 0.8; - - HelloWindow *window = new HelloWindow(renderer, screen); - window->setGeometry(QRect(center, windowSize).translated(-windowSize.width() / 2, -windowSize.height() / 2)); - - QChar id = QChar('B' + i); - window->setTitle(QStringLiteral("Thread ") + id + QStringLiteral(" - Context ") + id); - window->setVisible(true); - windows.prepend(window); - } - } - - for (int i = 0; i < renderThreads.size(); ++i) { - QObject::connect(qGuiApp, &QGuiApplication::lastWindowClosed, renderThreads.at(i), &QThread::quit); - renderThreads.at(i)->start(); - } - - // Quit after 10 seconds. For platforms that do not have windows that are closeable. - if (parser.isSet(timeoutOption)) - QTimer::singleShot(10000, qGuiApp, &QCoreApplication::quit); - - const int exitValue = app.exec(); - - for (int i = 0; i < renderThreads.size(); ++i) { - renderThreads.at(i)->quit(); // some platforms may not have windows to close so ensure quit() - renderThreads.at(i)->wait(); - } - - qDeleteAll(windows); - qDeleteAll(renderThreads); - - return exitValue; -} diff --git a/examples/opengl/opengl.pro b/examples/opengl/opengl.pro index da07d9e449..84b34c0ceb 100644 --- a/examples/opengl/opengl.pro +++ b/examples/opengl/opengl.pro @@ -1,9 +1,7 @@ TEMPLATE = subdirs -SUBDIRS = hellowindow \ - paintedwindow \ - openglwindow \ - qopenglwindow +SUBDIRS = paintedwindow \ + openglwindow qtHaveModule(widgets) { SUBDIRS += contextinfo \ diff --git a/examples/opengl/qopenglwindow/CMakeLists.txt b/examples/opengl/qopenglwindow/CMakeLists.txt deleted file mode 100644 index f1c407ce17..0000000000 --- a/examples/opengl/qopenglwindow/CMakeLists.txt +++ /dev/null @@ -1,49 +0,0 @@ -# Copyright (C) 2022 The Qt Company Ltd. -# SPDX-License-Identifier: BSD-3-Clause - -cmake_minimum_required(VERSION 3.16) -project(qopenglwindow LANGUAGES CXX) - -if(NOT DEFINED INSTALL_EXAMPLESDIR) - set(INSTALL_EXAMPLESDIR "examples") -endif() - -set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/qopenglwindow") - -find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) - -qt_standard_project_setup() - -qt_add_executable(qopenglwindow - background_renderer.cpp background_renderer.h - main.cpp -) - -set_target_properties(qopenglwindow PROPERTIES - WIN32_EXECUTABLE TRUE - MACOSX_BUNDLE TRUE -) - -target_link_libraries(qopenglwindow PRIVATE - Qt6::Core - Qt6::Gui - Qt6::OpenGL -) - -# Resources: -set(shaders_resource_files - "background.frag" -) - -qt_add_resources(qopenglwindow "shaders" - PREFIX - "/" - FILES - ${shaders_resource_files} -) - -install(TARGETS qopenglwindow - RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" - BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" - LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" -) diff --git a/examples/opengl/qopenglwindow/background.frag b/examples/opengl/qopenglwindow/background.frag deleted file mode 100644 index 4af85aae8e..0000000000 --- a/examples/opengl/qopenglwindow/background.frag +++ /dev/null @@ -1,30 +0,0 @@ -#define M_PI 3.14159265358979323846 -#define SPEED 10000.0 - -uniform int currentTime; -uniform highp vec2 windowSize; - -highp float noise(highp vec2 co) -{ - return 0.5 * fract(sin(dot(co.xy, vec2(12.9898,78.233))) * 43758.5453); -} - -highp float curvSpeed() -{ - return (mod(float(currentTime), SPEED) / SPEED) * (2.0 * M_PI); -} - -highp float curv(int curvCount) -{ - highp float curv_y = 0.1 *(cos((gl_FragCoord.x / windowSize.x) * (float(curvCount * 2) * M_PI) - curvSpeed())) + 0.5; - highp float frag_y = gl_FragCoord.y / windowSize.y; - return 1.0 - abs(curv_y - frag_y); -} - -void main() -{ - highp float coordNoise = noise(gl_FragCoord.xy); - highp float proximity = smoothstep(0.85, 1.0, (curv(6) + 1.0) * (coordNoise )); - highp vec3 color = vec3(coordNoise) * proximity; - gl_FragColor = vec4(color, 1.0); -} diff --git a/examples/opengl/qopenglwindow/background_renderer.cpp b/examples/opengl/qopenglwindow/background_renderer.cpp deleted file mode 100644 index 5939894dfe..0000000000 --- a/examples/opengl/qopenglwindow/background_renderer.cpp +++ /dev/null @@ -1,167 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include "background_renderer.h" - -#include -#include -#include - -#include -#include -#include - -#include - -static const char vertex_shader[] = - "attribute highp vec3 vertexCoord;" - "void main() {" - " gl_Position = vec4(vertexCoord,1.0);" - "}"; - -static const char fragment_shader[] = - "void main() {" - " gl_FragColor = vec4(0.0,1.0,0.0,1.0);" - "}"; - -static const float vertices[] = { -1, -1, 0, - -1, 1, 0, - 1, -1, 0, - 1, 1, 0 }; - -FragmentToy::FragmentToy(const QString &fragmentSource, QObject *parent) - : QObject(parent) - , m_recompile_shaders(true) -{ - if (QFile::exists(fragmentSource)) { - QFileInfo info(fragmentSource); - m_fragment_file_last_modified = info.lastModified(); - m_fragment_file = fragmentSource; -#if QT_CONFIG(filesystemwatcher) - m_watcher.addPath(info.canonicalPath()); - QObject::connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &FragmentToy::fileChanged); -#endif - } -} - -FragmentToy::~FragmentToy() - = default; - -void FragmentToy::draw(const QSize &windowSize) -{ - if (!m_program) - initializeOpenGLFunctions(); - - glDisable(GL_STENCIL_TEST); - glDisable(GL_DEPTH_TEST); - - glClearColor(0, 0, 0, 1); - glClear(GL_COLOR_BUFFER_BIT); - if (!m_vao.isCreated()) - m_vao.create(); - - QOpenGLVertexArrayObject::Binder binder(&m_vao); - - if (!m_vertex_buffer.isCreated()) { - m_vertex_buffer.create(); - m_vertex_buffer.bind(); - m_vertex_buffer.allocate(vertices, sizeof(vertices)); - m_vertex_buffer.release(); - } - - if (!m_program) { - m_program.reset(new QOpenGLShaderProgram); - m_program->create(); - m_vertex_shader.reset(new QOpenGLShader(QOpenGLShader::Vertex)); - if (!m_vertex_shader->compileSourceCode(vertex_shader)) { - qWarning() << "Failed to compile the vertex shader:" << m_vertex_shader->log(); - } - if (!m_program->addShader(m_vertex_shader.get())) { - qWarning() << "Failed to add vertex shader to program:" << m_program->log(); - } - } - - if (!m_fragment_shader && m_recompile_shaders) { - QByteArray data; - if (m_fragment_file.size()) { - QFile file(m_fragment_file); - if (file.open(QIODevice::ReadOnly)) { - data = file.readAll(); - } else { - qWarning() << "Failed to load input file, falling back to default"; - data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); - } - } else { - QFile qrcFile(":/background.frag"); - if (qrcFile.open(QIODevice::ReadOnly)) - data = qrcFile.readAll(); - else - data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); - } - if (data.size()) { - m_fragment_shader.reset(new QOpenGLShader(QOpenGLShader::Fragment)); - if (!m_fragment_shader->compileSourceCode(data)) { - qWarning() << "Failed to compile fragment shader:" << m_fragment_shader->log(); - m_fragment_shader.reset(nullptr); - } - } else { - qWarning() << "Unknown error, no fragment shader"; - } - - if (m_fragment_shader) { - if (!m_program->addShader(m_fragment_shader.get())) { - qWarning() << "Failed to add fragment shader to program:" << m_program->log(); - } - } - } - - if (m_recompile_shaders) { - m_recompile_shaders = false; - - if (m_program->link()) { - m_vertex_coord_pos = m_program->attributeLocation("vertexCoord"); - } else { - qWarning() << "Failed to link shader program" << m_program->log(); - } - - } - - if (!m_program->isLinked()) - return; - - m_program->bind(); - - m_vertex_buffer.bind(); - m_program->setAttributeBuffer("vertexCoord", GL_FLOAT, 0, 3, 0); - m_program->enableAttributeArray("vertexCoord"); - m_vertex_buffer.release(); - - m_program->setUniformValue("currentTime", (uint) QDateTime::currentMSecsSinceEpoch()); - m_program->setUniformValue("windowSize", windowSize); - - QOpenGLContext::currentContext()->functions()->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); - - m_program->release(); -} - -void FragmentToy::fileChanged(const QString &path) -{ - Q_UNUSED(path); - if (QFile::exists(m_fragment_file)) { - QFileInfo fragment_source(m_fragment_file); - if (fragment_source.lastModified() > m_fragment_file_last_modified) { - m_fragment_file_last_modified = fragment_source.lastModified(); - m_recompile_shaders = true; - if (m_program) { - m_program->removeShader(m_fragment_shader.get()); - m_fragment_shader.reset(nullptr); - } - } - } else { - m_recompile_shaders = true; - if (m_program) { - m_program->removeShader(m_fragment_shader.get()); - m_fragment_shader.reset(nullptr); - } - } -} diff --git a/examples/opengl/qopenglwindow/background_renderer.h b/examples/opengl/qopenglwindow/background_renderer.h deleted file mode 100644 index 76c0bec6a8..0000000000 --- a/examples/opengl/qopenglwindow/background_renderer.h +++ /dev/null @@ -1,46 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#ifndef FRAGMENT_TOY_H -#define FRAGMENT_TOY_H - -#include -#include -#include -#if QT_CONFIG(filesystemwatcher) -#include -#endif -#include -#include -#include -#include - -#include - -class FragmentToy : public QObject, protected QOpenGLFunctions -{ - Q_OBJECT -public: - explicit FragmentToy(const QString &fragmentSource, QObject *parent = nullptr); - ~FragmentToy(); - - void draw(const QSize &windowSize); - -private: - void fileChanged(const QString &path); - bool m_recompile_shaders; -#if QT_CONFIG(filesystemwatcher) - QFileSystemWatcher m_watcher; -#endif - QString m_fragment_file; - QDateTime m_fragment_file_last_modified; - - std::unique_ptr m_program; - std::unique_ptr m_vertex_shader; - std::unique_ptr m_fragment_shader; - QOpenGLVertexArrayObject m_vao; - QOpenGLBuffer m_vertex_buffer; - GLuint m_vertex_coord_pos; -}; - -#endif //FRAGMENT_TOY_H diff --git a/examples/opengl/qopenglwindow/main.cpp b/examples/opengl/qopenglwindow/main.cpp deleted file mode 100644 index 44810a4ecf..0000000000 --- a/examples/opengl/qopenglwindow/main.cpp +++ /dev/null @@ -1,154 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "background_renderer.h" - -static QPainterPath painterPathForTriangle() -{ - static const QPointF bottomLeft(-1.0, -1.0); - static const QPointF top(0.0, 1.0); - static const QPointF bottomRight(1.0, -1.0); - - QPainterPath path(bottomLeft); - path.lineTo(top); - path.lineTo(bottomRight); - path.closeSubpath(); - return path; -} - -class OpenGLWindow : public QOpenGLWindow -{ - Q_OBJECT - -public: - OpenGLWindow(); - -protected: - void paintGL() override; - void resizeGL(int w, int h) override; - void keyPressEvent(QKeyEvent *e) override; - -private: - void setAnimating(bool enabled); - - QMatrix4x4 m_window_normalised_matrix; - QMatrix4x4 m_window_painter_matrix; - QMatrix4x4 m_projection; - QMatrix4x4 m_view; - QMatrix4x4 m_model_triangle; - QMatrix4x4 m_model_text; - - FragmentToy m_fragment_toy; - QStaticText m_text_layout; - bool m_animate; -}; - -// Use NoPartialUpdate. This means that all the rendering goes directly to -// the window surface, no additional framebuffer object stands in the -// middle. This is fine since we will clear the entire framebuffer on each -// paint. Under the hood this means that the behavior is equivalent to the -// manual makeCurrent - perform OpenGL calls - swapBuffers loop that is -// typical in pure QWindow-based applications. -OpenGLWindow::OpenGLWindow() - : QOpenGLWindow(QOpenGLWindow::NoPartialUpdate) - , m_fragment_toy("./background.frag") - , m_text_layout("The triangle and this text is rendered with QPainter") - , m_animate(true) -{ - setGeometry(300, 300, 500, 500); - - m_view.lookAt(QVector3D(3,1,1), - QVector3D(0,0,0), - QVector3D(0,1,0)); - - setAnimating(m_animate); -} - -void OpenGLWindow::paintGL() -{ - m_fragment_toy.draw(size()); - - QPainter p(this); - p.setWorldTransform(m_window_normalised_matrix.toTransform()); - - QMatrix4x4 mvp = m_projection * m_view * m_model_triangle; - p.setTransform(mvp.toTransform(), true); - - p.fillPath(painterPathForTriangle(), QBrush(QGradient(QGradient::NightFade))); - - QTransform text_transform = (m_window_painter_matrix * m_view * m_model_text).toTransform(); - p.setTransform(text_transform, false); - p.setPen(QPen(Qt::black)); - m_text_layout.prepare(text_transform); - qreal x = - (m_text_layout.size().width() / 2); - qreal y = 0; - p.drawStaticText(x, y, m_text_layout); - - m_model_triangle.rotate(-1, 0, 1, 0); - m_model_text.rotate(1, 0, 1, 0); -} - -void OpenGLWindow::resizeGL(int w, int h) -{ - m_window_normalised_matrix.setToIdentity(); - m_window_normalised_matrix.translate(w / 2.0, h / 2.0); - m_window_normalised_matrix.scale(w / 2.0, -h / 2.0); - - m_window_painter_matrix.setToIdentity(); - m_window_painter_matrix.translate(w / 2.0, h / 2.0); - - m_text_layout.setTextWidth(std::max(w * 0.2, 80.0)); - - m_projection.setToIdentity(); - m_projection.perspective(45.f, qreal(w) / qreal(h), 0.1f, 100.f); -} - -void OpenGLWindow::keyPressEvent(QKeyEvent *e) -{ - if (e->key() == Qt::Key_P) { // pause - m_animate = !m_animate; - setAnimating(m_animate); - } -} - -void OpenGLWindow::setAnimating(bool enabled) -{ - if (enabled) { - // Animate continuously, throttled by the blocking swapBuffers() call the - // QOpenGLWindow internally executes after each paint. Once that is done - // (frameSwapped signal is emitted), we schedule a new update. This - // obviously assumes that the swap interval (see - // QSurfaceFormat::setSwapInterval()) is non-zero. - connect(this, &QOpenGLWindow::frameSwapped, - this, QOverload<>::of(&QPaintDeviceWindow::update)); - update(); - } else { - disconnect(this, &QOpenGLWindow::frameSwapped, - this, QOverload<>::of(&QPaintDeviceWindow::update)); - } -} - -int main(int argc, char **argv) -{ - QGuiApplication app(argc, argv); - - OpenGLWindow window; - QSurfaceFormat fmt; - fmt.setDepthBufferSize(24); - fmt.setStencilBufferSize(8); - window.setFormat(fmt); - window.show(); - - return app.exec(); -} - -#include "main.moc" diff --git a/examples/opengl/qopenglwindow/qopenglwindow.pro b/examples/opengl/qopenglwindow/qopenglwindow.pro deleted file mode 100644 index e7073a324b..0000000000 --- a/examples/opengl/qopenglwindow/qopenglwindow.pro +++ /dev/null @@ -1,16 +0,0 @@ -TEMPLATE = app -TARGET = qopenglwindow -INCLUDEPATH += . -QT += opengl - -RESOURCES += shaders.qrc - -SOURCES += \ - main.cpp \ - background_renderer.cpp - -HEADERS += \ - background_renderer.h - -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/qopenglwindow -INSTALLS += target diff --git a/examples/opengl/qopenglwindow/shaders.qrc b/examples/opengl/qopenglwindow/shaders.qrc deleted file mode 100644 index 64eefe2c70..0000000000 --- a/examples/opengl/qopenglwindow/shaders.qrc +++ /dev/null @@ -1,5 +0,0 @@ - - - background.frag - - diff --git a/tests/manual/examples/opengl/hellowindow/CMakeLists.txt b/tests/manual/examples/opengl/hellowindow/CMakeLists.txt new file mode 100644 index 0000000000..551cf9faef --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/CMakeLists.txt @@ -0,0 +1,39 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(hellowindow LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/hellowindow") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) + +qt_standard_project_setup() + +qt_add_executable(hellowindow + hellowindow.cpp hellowindow.h + main.cpp +) + +set_target_properties(hellowindow PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(hellowindow PRIVATE + Qt6::Core + Qt6::CorePrivate + Qt6::Gui + Qt6::GuiPrivate + Qt6::OpenGL +) + +install(TARGETS hellowindow + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/hellowindow/hellowindow.cpp b/tests/manual/examples/opengl/hellowindow/hellowindow.cpp new file mode 100644 index 0000000000..c9cad95563 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/hellowindow.cpp @@ -0,0 +1,305 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "hellowindow.h" + +#include +#include +#include +#include +#include + +Renderer::Renderer(const QSurfaceFormat &format, Renderer *share, QScreen *screen) + : m_initialized(false) + , m_format(format) +{ + m_context = new QOpenGLContext(this); + if (screen) + m_context->setScreen(screen); + m_context->setFormat(format); + if (share) + m_context->setShareContext(share->m_context); + m_context->create(); + + m_backgroundColor = QColor::fromRgbF(0.1f, 0.1f, 0.2f, 1.0f); + m_backgroundColor.setRed(QRandomGenerator::global()->bounded(64)); + m_backgroundColor.setGreen(QRandomGenerator::global()->bounded(128)); + m_backgroundColor.setBlue(QRandomGenerator::global()->bounded(256)); +} + +HelloWindow::HelloWindow(const QSharedPointer &renderer, QScreen *screen) + : m_colorIndex(0), m_renderer(renderer) +{ + setSurfaceType(QWindow::OpenGLSurface); + setFlags(Qt::Window | Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint); + + setGeometry(QRect(10, 10, 640, 480)); + + setFormat(renderer->format()); + if (screen) + setScreen(screen); + + create(); + + updateColor(); + + connect(renderer.data(), &Renderer::requestUpdate, this, &QWindow::requestUpdate); +} + +void HelloWindow::exposeEvent(QExposeEvent *) +{ + if (isExposed()) + render(); +} + +bool HelloWindow::event(QEvent *ev) +{ + if (ev->type() == QEvent::UpdateRequest && isExposed()) + render(); + return QWindow::event(ev); +} + +void HelloWindow::render() +{ + static QElapsedTimer timer; + if (!timer.isValid()) + timer.start(); + qreal a = (qreal)(((timer.elapsed() * 3) % 36000) / 100.0); + auto call = [this, r = m_renderer.data(), a, c = color()]() { r->render(this, a, c); }; + QMetaObject::invokeMethod(m_renderer.data(), call); +} + +void HelloWindow::mousePressEvent(QMouseEvent *) +{ + updateColor(); +} + +QColor HelloWindow::color() const +{ + return m_color; +} + +void HelloWindow::updateColor() +{ + QColor colors[] = + { + QColor(100, 255, 0), + QColor(0, 100, 255) + }; + + m_color = colors[m_colorIndex]; + m_colorIndex = 1 - m_colorIndex; +} + +void Renderer::render(HelloWindow *surface, qreal angle, const QColor &color) +{ + if (!m_context->makeCurrent(surface)) + return; + + QSize viewSize = surface->size(); + + if (!m_initialized) { + initialize(); + m_initialized = true; + } + + QOpenGLFunctions *f = m_context->functions(); + f->glViewport(0, 0, viewSize.width() * surface->devicePixelRatio(), viewSize.height() * surface->devicePixelRatio()); + f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + f->glClearColor(m_backgroundColor.redF(), m_backgroundColor.greenF(), m_backgroundColor.blueF(), m_backgroundColor.alphaF()); + f->glFrontFace(GL_CW); + f->glCullFace(GL_FRONT); + f->glEnable(GL_CULL_FACE); + f->glEnable(GL_DEPTH_TEST); + + m_program->bind(); + m_vbo.bind(); + + m_program->enableAttributeArray(vertexAttr); + m_program->enableAttributeArray(normalAttr); + m_program->setAttributeBuffer(vertexAttr, GL_FLOAT, 0, 3); + const int verticesSize = vertices.count() * 3 * sizeof(GLfloat); + m_program->setAttributeBuffer(normalAttr, GL_FLOAT, verticesSize, 3); + + QMatrix4x4 modelview; + modelview.rotate(angle, 0.0f, 1.0f, 0.0f); + modelview.rotate(angle, 1.0f, 0.0f, 0.0f); + modelview.rotate(angle, 0.0f, 0.0f, 1.0f); + modelview.translate(0.0f, -0.2f, 0.0f); + + m_program->setUniformValue(matrixUniform, modelview); + m_program->setUniformValue(colorUniform, color); + + m_context->functions()->glDrawArrays(GL_TRIANGLES, 0, vertices.size()); + + m_context->swapBuffers(surface); + + emit requestUpdate(); +} + +Q_GLOBAL_STATIC(QMutex, initMutex) + +void Renderer::initialize() +{ + // Threaded shader compilation can confuse some drivers. Avoid it. + QMutexLocker lock(initMutex()); + + QOpenGLShader *vshader = new QOpenGLShader(QOpenGLShader::Vertex, this); + vshader->compileSourceCode( + "attribute highp vec4 vertex;" + "attribute mediump vec3 normal;" + "uniform mediump mat4 matrix;" + "uniform lowp vec4 sourceColor;" + "varying mediump vec4 color;" + "void main(void)" + "{" + " vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));" + " float angle = max(dot(normal, toLight), 0.0);" + " vec3 col = sourceColor.rgb;" + " color = vec4(col * 0.2 + col * 0.8 * angle, 1.0);" + " color = clamp(color, 0.0, 1.0);" + " gl_Position = matrix * vertex;" + "}"); + + QOpenGLShader *fshader = new QOpenGLShader(QOpenGLShader::Fragment, this); + fshader->compileSourceCode( + "varying mediump vec4 color;" + "void main(void)" + "{" + " gl_FragColor = color;" + "}"); + + m_program = new QOpenGLShaderProgram(this); + m_program->addShader(vshader); + m_program->addShader(fshader); + m_program->link(); + m_program->bind(); + + vertexAttr = m_program->attributeLocation("vertex"); + normalAttr = m_program->attributeLocation("normal"); + matrixUniform = m_program->uniformLocation("matrix"); + colorUniform = m_program->uniformLocation("sourceColor"); + + createGeometry(); + + m_vbo.create(); + m_vbo.bind(); + const int verticesSize = vertices.count() * 3 * sizeof(GLfloat); + m_vbo.allocate(verticesSize * 2); + m_vbo.write(0, vertices.constData(), verticesSize); + m_vbo.write(verticesSize, normals.constData(), verticesSize); +} + +void Renderer::createGeometry() +{ + vertices.clear(); + 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 * qSin(angle); + qreal y5 = 0.30 * qCos(angle); + qreal x6 = 0.20 * qSin(angle); + qreal y6 = 0.20 * qCos(angle); + + angle += sectorAngle; + qreal x7 = 0.20 * qSin(angle); + qreal y7 = 0.20 * qCos(angle); + qreal x8 = 0.30 * qSin(angle); + qreal y8 = 0.30 * qCos(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 < vertices.size();i++) + vertices[i] *= 2.0f; +} + +void Renderer::quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4) +{ + vertices << QVector3D(x1, y1, -0.05f); + vertices << QVector3D(x2, y2, -0.05f); + vertices << QVector3D(x4, y4, -0.05f); + + vertices << QVector3D(x3, y3, -0.05f); + vertices << QVector3D(x4, y4, -0.05f); + vertices << QVector3D(x2, y2, -0.05f); + + QVector3D n = QVector3D::normal + (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(x4 - x1, y4 - y1, 0.0f)); + + normals << n; + normals << n; + normals << n; + + normals << n; + normals << n; + normals << n; + + vertices << QVector3D(x4, y4, 0.05f); + vertices << QVector3D(x2, y2, 0.05f); + vertices << QVector3D(x1, y1, 0.05f); + + vertices << QVector3D(x2, y2, 0.05f); + vertices << QVector3D(x4, y4, 0.05f); + vertices << QVector3D(x3, y3, 0.05f); + + n = QVector3D::normal + (QVector3D(x2 - x4, y2 - y4, 0.0f), QVector3D(x1 - x4, y1 - y4, 0.0f)); + + normals << n; + normals << n; + normals << n; + + normals << n; + normals << n; + normals << n; +} + +void Renderer::extrude(qreal x1, qreal y1, qreal x2, qreal y2) +{ + vertices << QVector3D(x1, y1, +0.05f); + vertices << QVector3D(x2, y2, +0.05f); + vertices << QVector3D(x1, y1, -0.05f); + + vertices << QVector3D(x2, y2, -0.05f); + vertices << QVector3D(x1, y1, -0.05f); + vertices << QVector3D(x2, y2, +0.05f); + + QVector3D n = QVector3D::normal + (QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(0.0f, 0.0f, -0.1f)); + + normals << n; + normals << n; + normals << n; + + normals << n; + normals << n; + normals << n; +} diff --git a/tests/manual/examples/opengl/hellowindow/hellowindow.h b/tests/manual/examples/opengl/hellowindow/hellowindow.h new file mode 100644 index 0000000000..1e117ab2e0 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/hellowindow.h @@ -0,0 +1,77 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef HELLOWINDOW_H +#define HELLOWINDOW_H + +#include + +#include +#include +#include +#include +#include +#include + +class HelloWindow; + +class Renderer : public QObject +{ + Q_OBJECT + +public: + explicit Renderer(const QSurfaceFormat &format, Renderer *share = nullptr, + QScreen *screen = nullptr); + + QSurfaceFormat format() const { return m_format; } + +public slots: + void render(HelloWindow *surface, qreal angle, const QColor &color); + +signals: + void requestUpdate(); + +private: + void initialize(); + + 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); + + QList vertices; + QList normals; + int vertexAttr; + int normalAttr; + int matrixUniform; + int colorUniform; + + bool m_initialized; + QSurfaceFormat m_format; + QOpenGLContext *m_context; + QOpenGLShaderProgram *m_program; + QOpenGLBuffer m_vbo; + QColor m_backgroundColor; +}; + +class HelloWindow : public QWindow +{ +public: + explicit HelloWindow(const QSharedPointer &renderer, QScreen *screen = nullptr); + + QColor color() const; + void updateColor(); + +protected: + bool event(QEvent *ev) override; + void exposeEvent(QExposeEvent *event) override; + void mousePressEvent(QMouseEvent *) override; + void render(); + +private: + int m_colorIndex; + QColor m_color; + const QSharedPointer m_renderer; +}; + +#endif // HELLOWINDOW_H diff --git a/tests/manual/examples/opengl/hellowindow/hellowindow.pro b/tests/manual/examples/opengl/hellowindow/hellowindow.pro new file mode 100644 index 0000000000..27c274a378 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/hellowindow.pro @@ -0,0 +1,9 @@ +QT += gui-private core-private opengl + +HEADERS += hellowindow.h +SOURCES += hellowindow.cpp main.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/hellowindow +INSTALLS += target + diff --git a/tests/manual/examples/opengl/hellowindow/main.cpp b/tests/manual/examples/opengl/hellowindow/main.cpp new file mode 100644 index 0000000000..ee4729a493 --- /dev/null +++ b/tests/manual/examples/opengl/hellowindow/main.cpp @@ -0,0 +1,125 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "hellowindow.h" + +#include + +#include +#include +#include +#include +#include + +int main(int argc, char *argv[]) +{ + QGuiApplication app(argc, argv); + + QCoreApplication::setApplicationName("Qt HelloWindow GL Example"); + QCoreApplication::setOrganizationName("QtProject"); + QCoreApplication::setApplicationVersion(QT_VERSION_STR); + QCommandLineParser parser; + parser.setApplicationDescription(QCoreApplication::applicationName()); + parser.addHelpOption(); + parser.addVersionOption(); + QCommandLineOption multipleOption("multiple", "Create multiple windows"); + parser.addOption(multipleOption); + QCommandLineOption multipleSampleOption("multisample", "Multisampling"); + parser.addOption(multipleSampleOption); + QCommandLineOption multipleScreenOption("multiscreen", "Run on multiple screens"); + parser.addOption(multipleScreenOption); + QCommandLineOption timeoutOption("timeout", "Close after 10s"); + parser.addOption(timeoutOption); + parser.process(app); + + // Some platforms can only have one window per screen. Therefore we need to differentiate. + const bool multipleWindows = parser.isSet(multipleOption); + const bool multipleScreens = parser.isSet(multipleScreenOption); + + QScreen *screen = QGuiApplication::primaryScreen(); + + QRect screenGeometry = screen->availableGeometry(); + + QSurfaceFormat format; + format.setDepthBufferSize(16); + if (parser.isSet(multipleSampleOption)) + format.setSamples(4); + + QPoint center = QPoint(screenGeometry.center().x(), screenGeometry.top() + 80); + QSize windowSize(400, 320); + int delta = 40; + + QList windows; + QSharedPointer rendererA(new Renderer(format)); + + HelloWindow *windowA = new HelloWindow(rendererA); + windowA->setGeometry(QRect(center, windowSize).translated(-windowSize.width() - delta / 2, 0)); + windowA->setTitle(QStringLiteral("Thread A - Context A")); + windowA->setVisible(true); + windows.prepend(windowA); + + QList renderThreads; + if (multipleWindows) { + QSharedPointer rendererB(new Renderer(format, rendererA.data())); + + QThread *renderThread = new QThread; + rendererB->moveToThread(renderThread); + renderThreads << renderThread; + + HelloWindow *windowB = new HelloWindow(rendererA); + windowB->setGeometry(QRect(center, windowSize).translated(delta / 2, 0)); + windowB->setTitle(QStringLiteral("Thread A - Context A")); + windowB->setVisible(true); + windows.prepend(windowB); + + HelloWindow *windowC = new HelloWindow(rendererB); + windowC->setGeometry(QRect(center, windowSize).translated(-windowSize.width() / 2, windowSize.height() + delta)); + windowC->setTitle(QStringLiteral("Thread B - Context B")); + windowC->setVisible(true); + windows.prepend(windowC); + } + if (multipleScreens) { + for (int i = 1; i < QGuiApplication::screens().size(); ++i) { + QScreen *screen = QGuiApplication::screens().at(i); + QSharedPointer renderer(new Renderer(format, rendererA.data(), screen)); + + QThread *renderThread = new QThread; + renderer->moveToThread(renderThread); + renderThreads.prepend(renderThread); + + QRect screenGeometry = screen->availableGeometry(); + QPoint center = screenGeometry.center(); + + QSize windowSize = screenGeometry.size() * 0.8; + + HelloWindow *window = new HelloWindow(renderer, screen); + window->setGeometry(QRect(center, windowSize).translated(-windowSize.width() / 2, -windowSize.height() / 2)); + + QChar id = QChar('B' + i); + window->setTitle(QStringLiteral("Thread ") + id + QStringLiteral(" - Context ") + id); + window->setVisible(true); + windows.prepend(window); + } + } + + for (int i = 0; i < renderThreads.size(); ++i) { + QObject::connect(qGuiApp, &QGuiApplication::lastWindowClosed, renderThreads.at(i), &QThread::quit); + renderThreads.at(i)->start(); + } + + // Quit after 10 seconds. For platforms that do not have windows that are closeable. + if (parser.isSet(timeoutOption)) + QTimer::singleShot(10000, qGuiApp, &QCoreApplication::quit); + + const int exitValue = app.exec(); + + for (int i = 0; i < renderThreads.size(); ++i) { + renderThreads.at(i)->quit(); // some platforms may not have windows to close so ensure quit() + renderThreads.at(i)->wait(); + } + + qDeleteAll(windows); + qDeleteAll(renderThreads); + + return exitValue; +} diff --git a/tests/manual/examples/opengl/qopenglwindow/CMakeLists.txt b/tests/manual/examples/opengl/qopenglwindow/CMakeLists.txt new file mode 100644 index 0000000000..f1c407ce17 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/CMakeLists.txt @@ -0,0 +1,49 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: BSD-3-Clause + +cmake_minimum_required(VERSION 3.16) +project(qopenglwindow LANGUAGES CXX) + +if(NOT DEFINED INSTALL_EXAMPLESDIR) + set(INSTALL_EXAMPLESDIR "examples") +endif() + +set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/qopenglwindow") + +find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) + +qt_standard_project_setup() + +qt_add_executable(qopenglwindow + background_renderer.cpp background_renderer.h + main.cpp +) + +set_target_properties(qopenglwindow PROPERTIES + WIN32_EXECUTABLE TRUE + MACOSX_BUNDLE TRUE +) + +target_link_libraries(qopenglwindow PRIVATE + Qt6::Core + Qt6::Gui + Qt6::OpenGL +) + +# Resources: +set(shaders_resource_files + "background.frag" +) + +qt_add_resources(qopenglwindow "shaders" + PREFIX + "/" + FILES + ${shaders_resource_files} +) + +install(TARGETS qopenglwindow + RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" + BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" + LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" +) diff --git a/tests/manual/examples/opengl/qopenglwindow/background.frag b/tests/manual/examples/opengl/qopenglwindow/background.frag new file mode 100644 index 0000000000..4af85aae8e --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/background.frag @@ -0,0 +1,30 @@ +#define M_PI 3.14159265358979323846 +#define SPEED 10000.0 + +uniform int currentTime; +uniform highp vec2 windowSize; + +highp float noise(highp vec2 co) +{ + return 0.5 * fract(sin(dot(co.xy, vec2(12.9898,78.233))) * 43758.5453); +} + +highp float curvSpeed() +{ + return (mod(float(currentTime), SPEED) / SPEED) * (2.0 * M_PI); +} + +highp float curv(int curvCount) +{ + highp float curv_y = 0.1 *(cos((gl_FragCoord.x / windowSize.x) * (float(curvCount * 2) * M_PI) - curvSpeed())) + 0.5; + highp float frag_y = gl_FragCoord.y / windowSize.y; + return 1.0 - abs(curv_y - frag_y); +} + +void main() +{ + highp float coordNoise = noise(gl_FragCoord.xy); + highp float proximity = smoothstep(0.85, 1.0, (curv(6) + 1.0) * (coordNoise )); + highp vec3 color = vec3(coordNoise) * proximity; + gl_FragColor = vec4(color, 1.0); +} diff --git a/tests/manual/examples/opengl/qopenglwindow/background_renderer.cpp b/tests/manual/examples/opengl/qopenglwindow/background_renderer.cpp new file mode 100644 index 0000000000..5939894dfe --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/background_renderer.cpp @@ -0,0 +1,167 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "background_renderer.h" + +#include +#include +#include + +#include +#include +#include + +#include + +static const char vertex_shader[] = + "attribute highp vec3 vertexCoord;" + "void main() {" + " gl_Position = vec4(vertexCoord,1.0);" + "}"; + +static const char fragment_shader[] = + "void main() {" + " gl_FragColor = vec4(0.0,1.0,0.0,1.0);" + "}"; + +static const float vertices[] = { -1, -1, 0, + -1, 1, 0, + 1, -1, 0, + 1, 1, 0 }; + +FragmentToy::FragmentToy(const QString &fragmentSource, QObject *parent) + : QObject(parent) + , m_recompile_shaders(true) +{ + if (QFile::exists(fragmentSource)) { + QFileInfo info(fragmentSource); + m_fragment_file_last_modified = info.lastModified(); + m_fragment_file = fragmentSource; +#if QT_CONFIG(filesystemwatcher) + m_watcher.addPath(info.canonicalPath()); + QObject::connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &FragmentToy::fileChanged); +#endif + } +} + +FragmentToy::~FragmentToy() + = default; + +void FragmentToy::draw(const QSize &windowSize) +{ + if (!m_program) + initializeOpenGLFunctions(); + + glDisable(GL_STENCIL_TEST); + glDisable(GL_DEPTH_TEST); + + glClearColor(0, 0, 0, 1); + glClear(GL_COLOR_BUFFER_BIT); + if (!m_vao.isCreated()) + m_vao.create(); + + QOpenGLVertexArrayObject::Binder binder(&m_vao); + + if (!m_vertex_buffer.isCreated()) { + m_vertex_buffer.create(); + m_vertex_buffer.bind(); + m_vertex_buffer.allocate(vertices, sizeof(vertices)); + m_vertex_buffer.release(); + } + + if (!m_program) { + m_program.reset(new QOpenGLShaderProgram); + m_program->create(); + m_vertex_shader.reset(new QOpenGLShader(QOpenGLShader::Vertex)); + if (!m_vertex_shader->compileSourceCode(vertex_shader)) { + qWarning() << "Failed to compile the vertex shader:" << m_vertex_shader->log(); + } + if (!m_program->addShader(m_vertex_shader.get())) { + qWarning() << "Failed to add vertex shader to program:" << m_program->log(); + } + } + + if (!m_fragment_shader && m_recompile_shaders) { + QByteArray data; + if (m_fragment_file.size()) { + QFile file(m_fragment_file); + if (file.open(QIODevice::ReadOnly)) { + data = file.readAll(); + } else { + qWarning() << "Failed to load input file, falling back to default"; + data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); + } + } else { + QFile qrcFile(":/background.frag"); + if (qrcFile.open(QIODevice::ReadOnly)) + data = qrcFile.readAll(); + else + data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); + } + if (data.size()) { + m_fragment_shader.reset(new QOpenGLShader(QOpenGLShader::Fragment)); + if (!m_fragment_shader->compileSourceCode(data)) { + qWarning() << "Failed to compile fragment shader:" << m_fragment_shader->log(); + m_fragment_shader.reset(nullptr); + } + } else { + qWarning() << "Unknown error, no fragment shader"; + } + + if (m_fragment_shader) { + if (!m_program->addShader(m_fragment_shader.get())) { + qWarning() << "Failed to add fragment shader to program:" << m_program->log(); + } + } + } + + if (m_recompile_shaders) { + m_recompile_shaders = false; + + if (m_program->link()) { + m_vertex_coord_pos = m_program->attributeLocation("vertexCoord"); + } else { + qWarning() << "Failed to link shader program" << m_program->log(); + } + + } + + if (!m_program->isLinked()) + return; + + m_program->bind(); + + m_vertex_buffer.bind(); + m_program->setAttributeBuffer("vertexCoord", GL_FLOAT, 0, 3, 0); + m_program->enableAttributeArray("vertexCoord"); + m_vertex_buffer.release(); + + m_program->setUniformValue("currentTime", (uint) QDateTime::currentMSecsSinceEpoch()); + m_program->setUniformValue("windowSize", windowSize); + + QOpenGLContext::currentContext()->functions()->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + + m_program->release(); +} + +void FragmentToy::fileChanged(const QString &path) +{ + Q_UNUSED(path); + if (QFile::exists(m_fragment_file)) { + QFileInfo fragment_source(m_fragment_file); + if (fragment_source.lastModified() > m_fragment_file_last_modified) { + m_fragment_file_last_modified = fragment_source.lastModified(); + m_recompile_shaders = true; + if (m_program) { + m_program->removeShader(m_fragment_shader.get()); + m_fragment_shader.reset(nullptr); + } + } + } else { + m_recompile_shaders = true; + if (m_program) { + m_program->removeShader(m_fragment_shader.get()); + m_fragment_shader.reset(nullptr); + } + } +} diff --git a/tests/manual/examples/opengl/qopenglwindow/background_renderer.h b/tests/manual/examples/opengl/qopenglwindow/background_renderer.h new file mode 100644 index 0000000000..76c0bec6a8 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/background_renderer.h @@ -0,0 +1,46 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef FRAGMENT_TOY_H +#define FRAGMENT_TOY_H + +#include +#include +#include +#if QT_CONFIG(filesystemwatcher) +#include +#endif +#include +#include +#include +#include + +#include + +class FragmentToy : public QObject, protected QOpenGLFunctions +{ + Q_OBJECT +public: + explicit FragmentToy(const QString &fragmentSource, QObject *parent = nullptr); + ~FragmentToy(); + + void draw(const QSize &windowSize); + +private: + void fileChanged(const QString &path); + bool m_recompile_shaders; +#if QT_CONFIG(filesystemwatcher) + QFileSystemWatcher m_watcher; +#endif + QString m_fragment_file; + QDateTime m_fragment_file_last_modified; + + std::unique_ptr m_program; + std::unique_ptr m_vertex_shader; + std::unique_ptr m_fragment_shader; + QOpenGLVertexArrayObject m_vao; + QOpenGLBuffer m_vertex_buffer; + GLuint m_vertex_coord_pos; +}; + +#endif //FRAGMENT_TOY_H diff --git a/tests/manual/examples/opengl/qopenglwindow/main.cpp b/tests/manual/examples/opengl/qopenglwindow/main.cpp new file mode 100644 index 0000000000..44810a4ecf --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/main.cpp @@ -0,0 +1,154 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "background_renderer.h" + +static QPainterPath painterPathForTriangle() +{ + static const QPointF bottomLeft(-1.0, -1.0); + static const QPointF top(0.0, 1.0); + static const QPointF bottomRight(1.0, -1.0); + + QPainterPath path(bottomLeft); + path.lineTo(top); + path.lineTo(bottomRight); + path.closeSubpath(); + return path; +} + +class OpenGLWindow : public QOpenGLWindow +{ + Q_OBJECT + +public: + OpenGLWindow(); + +protected: + void paintGL() override; + void resizeGL(int w, int h) override; + void keyPressEvent(QKeyEvent *e) override; + +private: + void setAnimating(bool enabled); + + QMatrix4x4 m_window_normalised_matrix; + QMatrix4x4 m_window_painter_matrix; + QMatrix4x4 m_projection; + QMatrix4x4 m_view; + QMatrix4x4 m_model_triangle; + QMatrix4x4 m_model_text; + + FragmentToy m_fragment_toy; + QStaticText m_text_layout; + bool m_animate; +}; + +// Use NoPartialUpdate. This means that all the rendering goes directly to +// the window surface, no additional framebuffer object stands in the +// middle. This is fine since we will clear the entire framebuffer on each +// paint. Under the hood this means that the behavior is equivalent to the +// manual makeCurrent - perform OpenGL calls - swapBuffers loop that is +// typical in pure QWindow-based applications. +OpenGLWindow::OpenGLWindow() + : QOpenGLWindow(QOpenGLWindow::NoPartialUpdate) + , m_fragment_toy("./background.frag") + , m_text_layout("The triangle and this text is rendered with QPainter") + , m_animate(true) +{ + setGeometry(300, 300, 500, 500); + + m_view.lookAt(QVector3D(3,1,1), + QVector3D(0,0,0), + QVector3D(0,1,0)); + + setAnimating(m_animate); +} + +void OpenGLWindow::paintGL() +{ + m_fragment_toy.draw(size()); + + QPainter p(this); + p.setWorldTransform(m_window_normalised_matrix.toTransform()); + + QMatrix4x4 mvp = m_projection * m_view * m_model_triangle; + p.setTransform(mvp.toTransform(), true); + + p.fillPath(painterPathForTriangle(), QBrush(QGradient(QGradient::NightFade))); + + QTransform text_transform = (m_window_painter_matrix * m_view * m_model_text).toTransform(); + p.setTransform(text_transform, false); + p.setPen(QPen(Qt::black)); + m_text_layout.prepare(text_transform); + qreal x = - (m_text_layout.size().width() / 2); + qreal y = 0; + p.drawStaticText(x, y, m_text_layout); + + m_model_triangle.rotate(-1, 0, 1, 0); + m_model_text.rotate(1, 0, 1, 0); +} + +void OpenGLWindow::resizeGL(int w, int h) +{ + m_window_normalised_matrix.setToIdentity(); + m_window_normalised_matrix.translate(w / 2.0, h / 2.0); + m_window_normalised_matrix.scale(w / 2.0, -h / 2.0); + + m_window_painter_matrix.setToIdentity(); + m_window_painter_matrix.translate(w / 2.0, h / 2.0); + + m_text_layout.setTextWidth(std::max(w * 0.2, 80.0)); + + m_projection.setToIdentity(); + m_projection.perspective(45.f, qreal(w) / qreal(h), 0.1f, 100.f); +} + +void OpenGLWindow::keyPressEvent(QKeyEvent *e) +{ + if (e->key() == Qt::Key_P) { // pause + m_animate = !m_animate; + setAnimating(m_animate); + } +} + +void OpenGLWindow::setAnimating(bool enabled) +{ + if (enabled) { + // Animate continuously, throttled by the blocking swapBuffers() call the + // QOpenGLWindow internally executes after each paint. Once that is done + // (frameSwapped signal is emitted), we schedule a new update. This + // obviously assumes that the swap interval (see + // QSurfaceFormat::setSwapInterval()) is non-zero. + connect(this, &QOpenGLWindow::frameSwapped, + this, QOverload<>::of(&QPaintDeviceWindow::update)); + update(); + } else { + disconnect(this, &QOpenGLWindow::frameSwapped, + this, QOverload<>::of(&QPaintDeviceWindow::update)); + } +} + +int main(int argc, char **argv) +{ + QGuiApplication app(argc, argv); + + OpenGLWindow window; + QSurfaceFormat fmt; + fmt.setDepthBufferSize(24); + fmt.setStencilBufferSize(8); + window.setFormat(fmt); + window.show(); + + return app.exec(); +} + +#include "main.moc" diff --git a/tests/manual/examples/opengl/qopenglwindow/qopenglwindow.pro b/tests/manual/examples/opengl/qopenglwindow/qopenglwindow.pro new file mode 100644 index 0000000000..e7073a324b --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/qopenglwindow.pro @@ -0,0 +1,16 @@ +TEMPLATE = app +TARGET = qopenglwindow +INCLUDEPATH += . +QT += opengl + +RESOURCES += shaders.qrc + +SOURCES += \ + main.cpp \ + background_renderer.cpp + +HEADERS += \ + background_renderer.h + +target.path = $$[QT_INSTALL_EXAMPLES]/opengl/qopenglwindow +INSTALLS += target diff --git a/tests/manual/examples/opengl/qopenglwindow/shaders.qrc b/tests/manual/examples/opengl/qopenglwindow/shaders.qrc new file mode 100644 index 0000000000..64eefe2c70 --- /dev/null +++ b/tests/manual/examples/opengl/qopenglwindow/shaders.qrc @@ -0,0 +1,5 @@ + + + background.frag + + -- cgit v1.2.3