diff options
Diffstat (limited to 'tests/manual/examples')
12 files changed, 1022 insertions, 0 deletions
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 <QOpenGLContext> +#include <QOpenGLFunctions> +#include <QRandomGenerator> +#include <qmath.h> +#include <QElapsedTimer> + +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> &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 <QWindow> + +#include <QColor> +#include <QMutex> +#include <QOpenGLShaderProgram> +#include <QOpenGLBuffer> +#include <QSharedPointer> +#include <QTimer> + +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<QVector3D> vertices; + QList<QVector3D> 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> &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<Renderer> 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 <qpa/qplatformintegration.h> + +#include <QCommandLineParser> +#include <QCommandLineOption> +#include <QGuiApplication> +#include <QScreen> +#include <QThread> + +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<QWindow *> windows; + QSharedPointer<Renderer> 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<QThread *> renderThreads; + if (multipleWindows) { + QSharedPointer<Renderer> 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> 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 <qmath.h> +#include <QFileInfo> +#include <QTime> + +#include <QOpenGLShaderProgram> +#include <QOpenGLContext> +#include <QOpenGLFunctions> + +#include <math.h> + +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 <QObject> +#include <QFile> +#include <QDateTime> +#if QT_CONFIG(filesystemwatcher) +#include <QFileSystemWatcher> +#endif +#include <QOpenGLVertexArrayObject> +#include <QOpenGLBuffer> +#include <QOpenGLShaderProgram> +#include <QOpenGLFunctions> + +#include <memory> + +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<QOpenGLShaderProgram> m_program; + std::unique_ptr<QOpenGLShader> m_vertex_shader; + std::unique_ptr<QOpenGLShader> 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 <QOpenGLWindow> +#include <QScreen> +#include <QPainter> +#include <QPainterPath> +#include <QGuiApplication> +#include <QMatrix4x4> +#include <QStaticText> +#include <QKeyEvent> + +#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 @@ +<!DOCTYPE RCC><RCC version="1.0"> +<qresource> + <file>background.frag</file> +</qresource> +</RCC> |