qt5base-lts/examples/vulkan/hellovulkanwidget/hellovulkanwidget.cpp
Marc Mutz d3f1076d0a QVulkanWindow: use QVector, not QSet, for small int set
Apart from being more efficient to construct and test, for the
expected very small number of entries, the example code itself shows
that a sorted vector is much more useful than an unordered set.

Change-Id: Ic5e38df0176ac4be08eac6a89c2e1cabab2a9020
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
2017-05-22 08:50:05 +00:00

186 lines
7.0 KiB
C++

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#include "hellovulkanwidget.h"
#include <QVulkanFunctions>
#include <QApplication>
#include <QVBoxLayout>
#include <QPlainTextEdit>
#include <QPushButton>
#include <QLCDNumber>
#include <QFileDialog>
#include <QMessageBox>
#include <QTabWidget>
MainWindow::MainWindow(VulkanWindow *w, QPlainTextEdit *logWidget)
: m_window(w)
{
QWidget *wrapper = QWidget::createWindowContainer(w);
m_info = new QPlainTextEdit;
m_info->setReadOnly(true);
m_number = new QLCDNumber(3);
m_number->setSegmentStyle(QLCDNumber::Filled);
QPushButton *grabButton = new QPushButton(tr("&Grab"));
grabButton->setFocusPolicy(Qt::NoFocus);
connect(grabButton, &QPushButton::clicked, this, &MainWindow::onGrabRequested);
QPushButton *quitButton = new QPushButton(tr("&Quit"));
quitButton->setFocusPolicy(Qt::NoFocus);
connect(quitButton, &QPushButton::clicked, qApp, &QCoreApplication::quit);
QVBoxLayout *layout = new QVBoxLayout;
m_infoTab = new QTabWidget(this);
m_infoTab->addTab(m_info, tr("Vulkan Info"));
m_infoTab->addTab(logWidget, tr("Debug Log"));
layout->addWidget(m_infoTab, 2);
layout->addWidget(m_number, 1);
layout->addWidget(wrapper, 5);
layout->addWidget(grabButton, 1);
layout->addWidget(quitButton, 1);
setLayout(layout);
}
void MainWindow::onVulkanInfoReceived(const QString &text)
{
m_info->setPlainText(text);
}
void MainWindow::onFrameQueued(int colorValue)
{
m_number->display(colorValue);
}
void MainWindow::onGrabRequested()
{
if (!m_window->supportsGrab()) {
QMessageBox::warning(this, tr("Cannot grab"), tr("This swapchain does not support readbacks."));
return;
}
QImage img = m_window->grab();
// Our startNextFrame() implementation is synchronous so img is ready to be
// used right here.
QFileDialog fd(this);
fd.setAcceptMode(QFileDialog::AcceptSave);
fd.setDefaultSuffix("png");
fd.selectFile("test.png");
if (fd.exec() == QDialog::Accepted)
img.save(fd.selectedFiles().first());
}
QVulkanWindowRenderer *VulkanWindow::createRenderer()
{
return new VulkanRenderer(this);
}
VulkanRenderer::VulkanRenderer(VulkanWindow *w)
: TriangleRenderer(w)
{
}
void VulkanRenderer::initResources()
{
TriangleRenderer::initResources();
QVulkanInstance *inst = m_window->vulkanInstance();
m_devFuncs = inst->deviceFunctions(m_window->device());
QString info;
info += QString().sprintf("Number of physical devices: %d\n", m_window->availablePhysicalDevices().count());
QVulkanFunctions *f = inst->functions();
VkPhysicalDeviceProperties props;
f->vkGetPhysicalDeviceProperties(m_window->physicalDevice(), &props);
info += QString().sprintf("Active physical device name: '%s' version %d.%d.%d\nAPI version %d.%d.%d\n",
props.deviceName,
VK_VERSION_MAJOR(props.driverVersion), VK_VERSION_MINOR(props.driverVersion),
VK_VERSION_PATCH(props.driverVersion),
VK_VERSION_MAJOR(props.apiVersion), VK_VERSION_MINOR(props.apiVersion),
VK_VERSION_PATCH(props.apiVersion));
info += QStringLiteral("Supported instance layers:\n");
for (const QVulkanLayer &layer : inst->supportedLayers())
info += QString().sprintf(" %s v%u\n", layer.name.constData(), layer.version);
info += QStringLiteral("Enabled instance layers:\n");
for (const QByteArray &layer : inst->layers())
info += QString().sprintf(" %s\n", layer.constData());
info += QStringLiteral("Supported instance extensions:\n");
for (const QVulkanExtension &ext : inst->supportedExtensions())
info += QString().sprintf(" %s v%u\n", ext.name.constData(), ext.version);
info += QStringLiteral("Enabled instance extensions:\n");
for (const QByteArray &ext : inst->extensions())
info += QString().sprintf(" %s\n", ext.constData());
info += QString().sprintf("Color format: %u\nDepth-stencil format: %u\n",
m_window->colorFormat(), m_window->depthStencilFormat());
info += QStringLiteral("Supported sample counts:");
const QVector<int> sampleCounts = m_window->supportedSampleCounts();
for (int count : sampleCounts)
info += QLatin1Char(' ') + QString::number(count);
info += QLatin1Char('\n');
emit static_cast<VulkanWindow *>(m_window)->vulkanInfoReceived(info);
}
void VulkanRenderer::startNextFrame()
{
TriangleRenderer::startNextFrame();
emit static_cast<VulkanWindow *>(m_window)->frameQueued(int(m_rotation) % 360);
}