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Diffstat (limited to 'examples/opengl/contextinfo/widget.cpp')
| -rw-r--r-- | examples/opengl/contextinfo/widget.cpp | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/examples/opengl/contextinfo/widget.cpp b/examples/opengl/contextinfo/widget.cpp new file mode 100644 index 0000000000..13cec3b3f8 --- /dev/null +++ b/examples/opengl/contextinfo/widget.cpp @@ -0,0 +1,357 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "widget.h" +#include "renderwindow.h" +#include <QVBoxLayout> +#include <QComboBox> +#include <QGroupBox> +#include <QRadioButton> +#include <QCheckBox> +#include <QHBoxLayout> +#include <QLabel> +#include <QPushButton> +#include <QTextEdit> +#include <QSplitter> +#include <QSurfaceFormat> +#include <QOpenGLContext> +#include <QOpenGLFunctions> +#include <QDebug> + +struct Version { + const char *str; + int major; + int minor; +}; + +static struct Version versions[] = { + { "1.0", 1, 0 }, + { "1.1", 1, 1 }, + { "1.2", 1, 2 }, + { "1.3", 1, 3 }, + { "1.4", 1, 4 }, + { "1.5", 1, 5 }, + { "2.0", 2, 0 }, + { "2.1", 2, 1 }, + { "3.0", 3, 0 }, + { "3.1", 3, 1 }, + { "3.2", 3, 2 }, + { "3.3", 3, 3 }, + { "4.0", 4, 0 }, + { "4.1", 4, 1 }, + { "4.2", 4, 2 }, + { "4.3", 4, 3 }, + { "4.4", 4, 4 } +}; + +struct Profile { + const char *str; + QSurfaceFormat::OpenGLContextProfile profile; +}; + +static struct Profile profiles[] = { + { "none", QSurfaceFormat::NoProfile }, + { "core", QSurfaceFormat::CoreProfile }, + { "compatibility", QSurfaceFormat::CompatibilityProfile } +}; + +struct Option { + const char *str; + QSurfaceFormat::FormatOption option; +}; + +static struct Option options[] = { + { "deprecated functions (not forward compatible)", QSurfaceFormat::DeprecatedFunctions }, + { "debug context", QSurfaceFormat::DebugContext }, + { "stereo buffers", QSurfaceFormat::StereoBuffers }, + // This is not a QSurfaceFormat option but is helpful to determine if the driver + // allows compiling old-style shaders with core profile. + { "force version 110 shaders", QSurfaceFormat::FormatOption(0) } +}; + +struct Renderable { + const char *str; + QSurfaceFormat::RenderableType renderable; +}; + +static struct Renderable renderables[] = { + { "default", QSurfaceFormat::DefaultRenderableType }, + { "OpenGL", QSurfaceFormat::OpenGL }, + { "OpenGL ES", QSurfaceFormat::OpenGLES } +}; + +void Widget::addVersions(QLayout *layout) +{ + QHBoxLayout *hbox = new QHBoxLayout; + hbox->setSpacing(20); + QLabel *label = new QLabel(tr("Context &version: ")); + hbox->addWidget(label); + m_version = new QComboBox; + m_version->setMinimumWidth(60); + label->setBuddy(m_version); + hbox->addWidget(m_version); + for (size_t i = 0; i < sizeof(versions) / sizeof(Version); ++i) { + m_version->addItem(QString::fromLatin1(versions[i].str)); + if (versions[i].major == 2 && versions[i].minor == 0) + m_version->setCurrentIndex(m_version->count() - 1); + } + + QPushButton *btn = new QPushButton(tr("Create context")); + connect(btn, &QPushButton::clicked, this, &Widget::start); + btn->setMinimumSize(120, 40); + hbox->addWidget(btn); + + layout->addItem(hbox); +} + +void Widget::addProfiles(QLayout *layout) +{ + QGroupBox *groupBox = new QGroupBox(tr("Profile")); + QVBoxLayout *vbox = new QVBoxLayout; + for (size_t i = 0; i < sizeof(profiles) / sizeof(Profile); ++i) + vbox->addWidget(new QRadioButton(QString::fromLatin1(profiles[i].str))); + static_cast<QRadioButton *>(vbox->itemAt(0)->widget())->setChecked(true); + groupBox->setLayout(vbox); + layout->addWidget(groupBox); + m_profiles = vbox; +} + +void Widget::addOptions(QLayout *layout) +{ + QGroupBox *groupBox = new QGroupBox(tr("Options")); + QVBoxLayout *vbox = new QVBoxLayout; + for (size_t i = 0; i < sizeof(options) / sizeof(Option); ++i) + vbox->addWidget(new QCheckBox(QString::fromLatin1(options[i].str))); + groupBox->setLayout(vbox); + layout->addWidget(groupBox); + m_options = vbox; +} + +void Widget::addRenderableTypes(QLayout *layout) +{ + QGroupBox *groupBox = new QGroupBox(tr("Renderable type")); + QVBoxLayout *vbox = new QVBoxLayout; + for (size_t i = 0; i < sizeof(renderables) / sizeof(Renderable); ++i) + vbox->addWidget(new QRadioButton(QString::fromLatin1(renderables[i].str))); + static_cast<QRadioButton *>(vbox->itemAt(0)->widget())->setChecked(true); + groupBox->setLayout(vbox); + layout->addWidget(groupBox); + m_renderables = vbox; +} + +void Widget::addRenderWindow() +{ + m_renderWindowLayout->addWidget(m_renderWindowContainer); +} + +static QWidget *widgetWithLayout(QLayout *layout) +{ + QWidget *w = new QWidget; + w->setLayout(layout); + return w; +} + +Widget::Widget(QWidget *parent) + : QWidget(parent) +{ + QVBoxLayout *layout = new QVBoxLayout; + QSplitter *vsplit = new QSplitter(Qt::Vertical); + layout->addWidget(vsplit); + + QSplitter *hsplit = new QSplitter; + + QVBoxLayout *settingsLayout = new QVBoxLayout; + addVersions(settingsLayout); + addProfiles(settingsLayout); + addOptions(settingsLayout); + addRenderableTypes(settingsLayout); + hsplit->addWidget(widgetWithLayout(settingsLayout)); + + QVBoxLayout *outputLayout = new QVBoxLayout; + m_output = new QTextEdit; + m_output->setReadOnly(true); + outputLayout->addWidget(m_output); + m_extensions = new QTextEdit; + m_extensions->setReadOnly(true); + outputLayout->addWidget(m_extensions); + hsplit->addWidget(widgetWithLayout(outputLayout)); + + hsplit->setStretchFactor(0, 4); + hsplit->setStretchFactor(1, 6); + vsplit->addWidget(hsplit); + + m_renderWindowLayout = new QVBoxLayout; + vsplit->addWidget(widgetWithLayout(m_renderWindowLayout)); + vsplit->setStretchFactor(1, 5); + + m_renderWindowContainer = new QWidget; + addRenderWindow(); + + setLayout(layout); +} + +void Widget::start() +{ + QSurfaceFormat fmt; + + int idx = m_version->currentIndex(); + if (idx < 0) + return; + fmt.setVersion(versions[idx].major, versions[idx].minor); + + for (size_t i = 0; i < sizeof(profiles) / sizeof(Profile); ++i) + if (static_cast<QRadioButton *>(m_profiles->itemAt(int(i))->widget())->isChecked()) { + fmt.setProfile(profiles[i].profile); + break; + } + + bool forceGLSL110 = false; + for (size_t i = 0; i < sizeof(options) / sizeof(Option); ++i) + if (static_cast<QCheckBox *>(m_options->itemAt(int(i))->widget())->isChecked()) { + if (options[i].option) + fmt.setOption(options[i].option); + else if (i == 3) + forceGLSL110 = true; + } + + for (size_t i = 0; i < sizeof(renderables) / sizeof(Renderable); ++i) + if (static_cast<QRadioButton *>(m_renderables->itemAt(int(i))->widget())->isChecked()) { + fmt.setRenderableType(renderables[i].renderable); + break; + } + + // The example rendering will need a depth buffer. + fmt.setDepthBufferSize(16); + + m_output->clear(); + m_extensions->clear(); + qDebug() << "Requesting surface format" << fmt; + + m_renderWindowLayout->removeWidget(m_renderWindowContainer); + delete m_renderWindowContainer; + + RenderWindow *renderWindow = new RenderWindow(fmt); + if (!renderWindow->context()) { + m_output->append(tr("Failed to create context")); + delete renderWindow; + m_renderWindowContainer = new QWidget; + addRenderWindow(); + return; + } + + renderWindow->setForceGLSL110(forceGLSL110); + connect(renderWindow, &RenderWindow::ready, this, &Widget::renderWindowReady); + connect(renderWindow, &RenderWindow::error, this, &Widget::renderWindowError); + + m_renderWindowContainer = QWidget::createWindowContainer(renderWindow); + addRenderWindow(); +} + +void Widget::renderWindowReady() +{ + QOpenGLContext *context = QOpenGLContext::currentContext(); + Q_ASSERT(context); + const QSurfaceFormat format = context->format(); + + m_output->append(tr("OpenGL version: %1.%2").arg(format.majorVersion()).arg(format.minorVersion())); + + for (size_t i = 0; i < sizeof(profiles) / sizeof(Profile); ++i) + if (profiles[i].profile == format.profile()) { + m_output->append(tr("Profile: %1").arg(QString::fromLatin1(profiles[i].str))); + break; + } + + QString opts; + for (size_t i = 0; i < sizeof(options) / sizeof(Option); ++i) + if (format.testOption(options[i].option)) + opts += QString::fromLatin1(options[i].str) + QStringLiteral(" "); + m_output->append(tr("Options: %1").arg(opts)); + + for (size_t i = 0; i < sizeof(renderables) / sizeof(Renderable); ++i) + if (renderables[i].renderable == format.renderableType()) { + m_output->append(tr("Renderable type: %1").arg(QString::fromLatin1(renderables[i].str))); + break; + } + + QString vendor, renderer, version, glslVersion; + const GLubyte *p; + if ((p = glGetString(GL_VENDOR))) + vendor = QString::fromLatin1(reinterpret_cast<const char *>(p)); + if ((p = glGetString(GL_RENDERER))) + renderer = QString::fromLatin1(reinterpret_cast<const char *>(p)); + if ((p = glGetString(GL_VERSION))) + version = QString::fromLatin1(reinterpret_cast<const char *>(p)); + if ((p = glGetString(GL_SHADING_LANGUAGE_VERSION))) + glslVersion = QString::fromLatin1(reinterpret_cast<const char *>(p)); + + m_output->append(tr("\nVendor: %1").arg(vendor)); + m_output->append(tr("Renderer: %1").arg(renderer)); + m_output->append(tr("OpenGL version: %1").arg(version)); + m_output->append(tr("GLSL version: %1").arg(glslVersion)); + + m_output->append(tr("\nDepth buffer size: %1").arg(QString::number(format.depthBufferSize()))); + m_output->append(tr("Stencil buffer size: %1").arg(QString::number(format.stencilBufferSize()))); + m_output->append(tr("Samples: %1").arg(QString::number(format.samples()))); + m_output->append(tr("Red buffer size: %1").arg(QString::number(format.redBufferSize()))); + m_output->append(tr("Green buffer size: %1").arg(QString::number(format.greenBufferSize()))); + m_output->append(tr("Blue buffer size: %1").arg(QString::number(format.blueBufferSize()))); + m_output->append(tr("Alpha buffer size: %1").arg(QString::number(format.alphaBufferSize()))); + m_output->append(tr("Swap interval: %1").arg(QString::number(format.swapInterval()))); + + const char *gltype[] = { "Desktop", "GLES 2", "GLES 1" }; + m_output->append(tr("\nQt OpenGL configuration: %1") + .arg(QString::fromLatin1(gltype[QOpenGLFunctions::platformGLType()]))); + m_output->append(tr("Qt OpenGL library handle: %1") + .arg(QString::number(qintptr(QOpenGLFunctions::platformGLHandle()), 16))); + + QList<QByteArray> extensionList = context->extensions().toList(); + std::sort(extensionList.begin(), extensionList.end()); + m_extensions->append(tr("Found %1 extensions:").arg(extensionList.count())); + Q_FOREACH (const QByteArray &ext, extensionList) + m_extensions->append(QString::fromLatin1(ext)); + + m_output->moveCursor(QTextCursor::Start); + m_extensions->moveCursor(QTextCursor::Start); +} + +void Widget::renderWindowError(const QString &msg) +{ + m_output->append(tr("An error has occurred:\n%1").arg(msg)); +} |