qt 6.5.1 original

examples/vulkan/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+qt_internal_add_example(hellovulkantriangle)
+if(TARGET Qt6::Widgets)
+    qt_internal_add_example(hellovulkanwidget)
+endif()
+if(TARGET Qt6::Concurrent AND TARGET Qt6::Widgets)
+    qt_internal_add_example(hellovulkancubes)
+endif()

examples/vulkan/doc/src/hellovulkancubes.qdoc

@@ -0,0 +1,35 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
+
+/*!
+    \example hellovulkancubes
+    \meta installpath vulkan
+    \title Hello Vulkan Cubes Example
+    \ingroup examples-vulkan
+    \brief Shows the basics of using QVulkanWindow.
+
+    The \e{Hello Vulkan Cubes Example} shows more advanced usage of QVulkanWindow.
+
+    \image hellovulkancubes.png
+
+    In this example there is a mesh loaded from a file and two different
+    materials and corresponding graphics pipelines. The rounded cubes are drawn
+    using instancing and feature a Phong lighting model with a single
+    directional light.
+
+    Unlike hellovulkantexture and hellovulkantriangle, the uniform buffer
+    handling takes an alternative approach here: dynamic uniform buffers are
+    used instead of multiple descriptor sets.
+
+    The example requires QtConcurrent since it demonstrates simple usage of
+    QtConcurrent::run(), QFuture, and QFutureWatcher in combination of
+    QVulkanWindow. Mesh and shader data loading, the potentially expensive
+    graphics pipeline construction, and the building of the frame command buffer
+    are all done in separate worker threads.
+
+    The scene is embedded into a widget-based user interface. The QVulkanWindow
+    subclass handles mouse and keyboard input as well since it provides a
+    first-person style camera in order to allow moving around in the scene.
+
+    \include examples-run.qdocinc
+*/

examples/vulkan/doc/src/hellovulkantriangle.qdoc

@@ -0,0 +1,68 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
+
+/*!
+    \example hellovulkantriangle
+    \meta installpath vulkan
+    \ingroup examples-vulkan
+    \title Hello Vulkan Triangle Example
+    \brief Shows the basics of rendering with QVulkanWindow and the Vulkan API.
+
+    The \e{Hello Vulkan Triangle Example} creates a full graphics pipeline,
+    including a vertex and fragment shader, to render a triangle.
+
+    \image hellovulkantriangle.png
+
+    \section1 Startup
+
+    Each Qt application using Vulkan will have to have a \c{Vulkan instance}
+    which encapsulates application-level state and initializes a Vulkan library.
+
+    A QVulkanWindow must always be associated with a QVulkanInstance and hence
+    the example performs instance creation before the window. The
+    QVulkanInstance object must also outlive the window.
+
+    \snippet hellovulkantriangle/main.cpp 0
+
+    The example enables validation layers, when supported. When the requested
+    layers are not present, the request will be ignored. Additional layers and
+    extensions can be enabled in a similar manner.
+
+    \snippet hellovulkantriangle/main.cpp 1
+
+    Once the instance is ready, it is time to create a window. Note that \c w
+    lives on the stack and is declared after \c inst.
+
+    \section1 The QVulkanWindow Subclass
+
+    To add custom functionality to a QVulkanWindow, subclassing is used. This
+    follows the existing patterns from QOpenGLWindow and QOpenGLWidget.
+    However, QVulkanWindow utilizes a separate QVulkanWindowRenderer object.
+
+    The QVulkanWindow subclass reimplements the factory function
+    QVulkanWindow::createRenderer(). This simply returns a new instance of the
+    QVulkanWindowRenderer subclass. In order to be able to access various
+    Vulkan resources via the window object, a pointer to the window is passed
+    and stored via the constructor.
+
+    \snippet hellovulkantriangle/main.cpp 2
+
+    \section1 The Actual Rendering
+
+    QVulkanWindow subclasses queue their draw calls in their reimplementation
+    of QVulkanWindowRenderer::startNextFrame(). Once done, they are required to
+    call back QVulkanWindow::frameReady(). The example has no asynchronous
+    command generation, so the frameReady() call is made directly from
+    startNextFrame(). To get continuous updates, the example simply invokes
+    QWindow::requestUpdate() in order to schedule a repaint.
+
+    The example also demonstrates multisample antialiasing. Based on the
+    supported sample counts reported by QVulkanWindow::supportedSampleCounts()
+    the example chooses between 8x, 4x, or no multisampling. Once configured
+    via QVulkanWindow::setSamples(), QVulkanWindow takes care of the rest: the
+    additional multisample color buffers are created automatically, and
+    resolving into the swapchain buffers is performed at the end of the default
+    render pass for each frame.
+
+    \include examples-run.qdocinc
+*/

examples/vulkan/doc/src/hellovulkanwidget.qdoc

@@ -0,0 +1,26 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
+
+/*!
+    \example hellovulkanwidget
+    \meta installpath vulkan
+    \ingroup examples-vulkan
+    \title Hello Vulkan Widget Example
+    \brief Shows the usage of QVulkanWindow in QWidget applications.
+
+    The \e{Hello Vulkan Widget Example} is a variant of \l hellovulkantriangle
+    that embeds the QVulkanWindow into a QWidget-based user interface using
+    QWidget::createWindowContainer().
+
+    \image hellovulkanwidget.png
+
+    The code to set up the Vulkan pipeline and render the triangle is the same
+    as in \l hellovulkantriangle. In addition, this example demonstrates
+    another feature of QVulkanWindow: reading the image content back from the
+    color buffer into a QImage. By clicking the Grab button, the example
+    renders the next frame and follows it up with a transfer operation in order
+    to get the swapchain color buffer content copied into host accessible
+    memory. The image is then saved to disk via QImage::save().
+
+    \include examples-run.qdocinc
+*/

examples/vulkan/hellovulkancubes/CMakeLists.txt

@@ -0,0 +1,68 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(hellovulkancubes LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/vulkan/hellovulkancubes")
+
+find_package(Qt6 REQUIRED COMPONENTS Concurrent Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(hellovulkancubes
+    camera.cpp camera.h
+    main.cpp
+    mainwindow.cpp mainwindow.h
+    mesh.cpp mesh.h
+    renderer.cpp renderer.h
+    shader.cpp shader.h
+    vulkanwindow.cpp vulkanwindow.h
+)
+
+set_target_properties(hellovulkancubes PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(hellovulkancubes PRIVATE
+    Qt6::Concurrent
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+# Resources:
+set_source_files_properties("../shared/block.buf"
+    PROPERTIES QT_RESOURCE_ALIAS "block.buf"
+)
+
+set_source_files_properties("../shared/qt_logo.buf"
+    PROPERTIES QT_RESOURCE_ALIAS "qt_logo.buf"
+)
+
+set(hellovulkancubes_resource_files
+    "../shared/block.buf"
+    "../shared/qt_logo.buf"
+    "color_frag.spv"
+    "color_phong_frag.spv"
+    "color_phong_vert.spv"
+    "color_vert.spv"
+)
+
+qt6_add_resources(hellovulkancubes "hellovulkancubes"
+    PREFIX
+        "/"
+    FILES
+        ${hellovulkancubes_resource_files}
+)
+
+install(TARGETS hellovulkancubes
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/vulkan/hellovulkancubes/camera.cpp

@@ -0,0 +1,65 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "camera.h"
+
+Camera::Camera(const QVector3D &pos)
+    : m_forward(0.0f, 0.0f, -1.0f),
+      m_right(1.0f, 0.0f, 0.0f),
+      m_up(0.0f, 1.0f, 0.0f),
+      m_pos(pos),
+      m_yaw(0.0f),
+      m_pitch(0.0f)
+{
+}
+
+static inline void clamp360(float *v)
+{
+    if (*v > 360.0f)
+        *v -= 360.0f;
+    if (*v < -360.0f)
+        *v += 360.0f;
+}
+
+void Camera::yaw(float degrees)
+{
+    m_yaw += degrees;
+    clamp360(&m_yaw);
+    m_yawMatrix.setToIdentity();
+    m_yawMatrix.rotate(m_yaw, 0, 1, 0);
+
+    QMatrix4x4 rotMat = m_pitchMatrix * m_yawMatrix;
+    m_forward = (QVector4D(0.0f, 0.0f, -1.0f, 0.0f) * rotMat).toVector3D();
+    m_right = (QVector4D(1.0f, 0.0f, 0.0f, 0.0f) * rotMat).toVector3D();
+}
+
+void Camera::pitch(float degrees)
+{
+    m_pitch += degrees;
+    clamp360(&m_pitch);
+    m_pitchMatrix.setToIdentity();
+    m_pitchMatrix.rotate(m_pitch, 1, 0, 0);
+
+    QMatrix4x4 rotMat = m_pitchMatrix * m_yawMatrix;
+    m_forward = (QVector4D(0.0f, 0.0f, -1.0f, 0.0f) * rotMat).toVector3D();
+    m_up = (QVector4D(0.0f, 1.0f, 0.0f, 0.0f) * rotMat).toVector3D();
+}
+
+void Camera::walk(float amount)
+{
+    m_pos[0] += amount * m_forward.x();
+    m_pos[2] += amount * m_forward.z();
+}
+
+void Camera::strafe(float amount)
+{
+    m_pos[0] += amount * m_right.x();
+    m_pos[2] += amount * m_right.z();
+}
+
+QMatrix4x4 Camera::viewMatrix() const
+{
+    QMatrix4x4 m = m_pitchMatrix * m_yawMatrix;
+    m.translate(-m_pos);
+    return m;
+}

examples/vulkan/hellovulkancubes/camera.h

@@ -0,0 +1,33 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef CAMERA_H
+#define CAMERA_H
+
+#include <QVector3D>
+#include <QMatrix4x4>
+
+class Camera
+{
+public:
+    Camera(const QVector3D &pos);
+
+    void yaw(float degrees);
+    void pitch(float degrees);
+    void walk(float amount);
+    void strafe(float amount);
+
+    QMatrix4x4 viewMatrix() const;
+
+private:
+    QVector3D m_forward;
+    QVector3D m_right;
+    QVector3D m_up;
+    QVector3D m_pos;
+    float m_yaw;
+    float m_pitch;
+    QMatrix4x4 m_yawMatrix;
+    QMatrix4x4 m_pitchMatrix;
+};
+
+#endif

examples/vulkan/hellovulkancubes/color.frag

@@ -0,0 +1,12 @@
+#version 440
+
+layout(push_constant) uniform PC {
+    layout(offset = 64) vec3 color;
+} pc;
+
+layout(location = 0) out vec4 fragColor;
+
+void main()
+{
+    fragColor = vec4(pc.color, 1.0);
+}

examples/vulkan/hellovulkancubes/color.vert

@@ -0,0 +1,14 @@
+#version 440
+
+layout(location = 0) in vec4 position;
+
+out gl_PerVertex { vec4 gl_Position; };
+
+layout(push_constant) uniform PC {
+    mat4 mvp;
+} pc;
+
+void main()
+{
+    gl_Position = pc.mvp * position;
+}

examples/vulkan/hellovulkancubes/color_phong.frag

@@ -0,0 +1,39 @@
+#version 440
+
+layout(location = 0) in vec3 vECVertNormal;
+layout(location = 1) in vec3 vECVertPos;
+layout(location = 2) flat in vec3 vDiffuseAdjust;
+
+layout(std140, binding = 1) uniform buf {
+    vec3 ECCameraPosition;
+    vec3 ka;
+    vec3 kd;
+    vec3 ks;
+    // Have one light only for now.
+    vec3 ECLightPosition;
+    vec3 attenuation;
+    vec3 color;
+    float intensity;
+    float specularExp;
+} ubuf;
+
+layout(location = 0) out vec4 fragColor;
+
+void main()
+{
+    vec3 unnormL = ubuf.ECLightPosition - vECVertPos;
+    float dist = length(unnormL);
+    float att = 1.0 / (ubuf.attenuation.x + ubuf.attenuation.y * dist + ubuf.attenuation.z * dist * dist);
+
+    vec3 N = normalize(vECVertNormal);
+    vec3 L = normalize(unnormL);
+    float NL = max(0.0, dot(N, L));
+    vec3 dColor = att * ubuf.intensity * ubuf.color * NL;
+
+    vec3 R = reflect(-L, N);
+    vec3 V = normalize(ubuf.ECCameraPosition - vECVertPos);
+    float RV = max(0.0, dot(R, V));
+    vec3 sColor = att * ubuf.intensity * ubuf.color * pow(RV, ubuf.specularExp);
+
+    fragColor = vec4(ubuf.ka + (ubuf.kd + vDiffuseAdjust) * dColor + ubuf.ks * sColor, 1.0);
+}

examples/vulkan/hellovulkancubes/color_phong.vert

@@ -0,0 +1,32 @@
+#version 440
+
+layout(location = 0) in vec4 position;
+layout(location = 1) in vec3 normal;
+
+// Instanced attributes to variate the translation of the model and the diffuse
+// color of the material.
+layout(location = 2) in vec3 instTranslate;
+layout(location = 3) in vec3 instDiffuseAdjust;
+
+out gl_PerVertex { vec4 gl_Position; };
+layout(location = 0) out vec3 vECVertNormal;
+layout(location = 1) out vec3 vECVertPos;
+layout(location = 2) flat out vec3 vDiffuseAdjust;
+
+layout(std140, binding = 0) uniform buf {
+    mat4 vp;
+    mat4 model;
+    mat3 modelNormal;
+} ubuf;
+
+void main()
+{
+    vECVertNormal = normalize(ubuf.modelNormal * normal);
+    mat4 t = mat4(1, 0, 0, 0,
+                  0, 1, 0, 0,
+                  0, 0, 1, 0,
+                  instTranslate.x, instTranslate.y, instTranslate.z, 1);
+    vECVertPos = vec3(t * ubuf.model * position);
+    vDiffuseAdjust = instDiffuseAdjust;
+    gl_Position = ubuf.vp * t * ubuf.model * position;
+}

examples/vulkan/hellovulkancubes/hellovulkancubes.pro

@@ -0,0 +1,24 @@
+QT += widgets concurrent
+
+HEADERS += \
+    mainwindow.h \
+    vulkanwindow.h \
+    renderer.h \
+    mesh.h \
+    shader.h \
+    camera.h
+
+SOURCES += \
+    main.cpp \
+    mainwindow.cpp \
+    vulkanwindow.cpp \
+    renderer.cpp \
+    mesh.cpp \
+    shader.cpp \
+    camera.cpp
+
+RESOURCES += hellovulkancubes.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/vulkan/hellovulkancubes
+INSTALLS += target

examples/vulkan/hellovulkancubes/hellovulkancubes.qrc

@@ -0,0 +1,10 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file alias="block.buf">../shared/block.buf</file>
+    <file alias="qt_logo.buf">../shared/qt_logo.buf</file>
+    <file>color_phong_vert.spv</file>
+    <file>color_phong_frag.spv</file>
+    <file>color_vert.spv</file>
+    <file>color_frag.spv</file>
+</qresource>
+</RCC>

examples/vulkan/hellovulkancubes/main.cpp

@@ -0,0 +1,33 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+#include <QLoggingCategory>
+#include "mainwindow.h"
+#include "vulkanwindow.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    const bool dbg = qEnvironmentVariableIntValue("QT_VK_DEBUG");
+
+    QVulkanInstance inst;
+
+    if (dbg) {
+        QLoggingCategory::setFilterRules(QStringLiteral("qt.vulkan=true"));
+        inst.setLayers({ "VK_LAYER_KHRONOS_validation" });
+    }
+
+    if (!inst.create())
+        qFatal("Failed to create Vulkan instance: %d", inst.errorCode());
+
+    VulkanWindow *vulkanWindow = new VulkanWindow(dbg);
+    vulkanWindow->setVulkanInstance(&inst);
+
+    MainWindow mainWindow(vulkanWindow);
+    mainWindow.resize(1024, 768);
+    mainWindow.show();
+
+    return app.exec();
+}

examples/vulkan/hellovulkancubes/mainwindow.cpp

@@ -0,0 +1,70 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "mainwindow.h"
+#include "vulkanwindow.h"
+#include <QApplication>
+#include <QLabel>
+#include <QPushButton>
+#include <QLCDNumber>
+#include <QCheckBox>
+#include <QGridLayout>
+
+MainWindow::MainWindow(VulkanWindow *vulkanWindow)
+{
+    QWidget *wrapper = QWidget::createWindowContainer(vulkanWindow);
+    wrapper->setFocusPolicy(Qt::StrongFocus);
+    wrapper->setFocus();
+
+    infoLabel = new QLabel;
+    infoLabel->setFrameStyle(QFrame::Box | QFrame::Raised);
+    infoLabel->setAlignment(Qt::AlignCenter);
+    infoLabel->setText(tr("This example demonstrates instanced drawing\nof a mesh loaded from a file.\n"
+                          "Uses a Phong material with a single light.\n"
+                          "Also demonstrates dynamic uniform buffers\nand a bit of threading with QtConcurrent.\n"
+                          "Uses 4x MSAA when available.\n"
+                          "Comes with an FPS camera.\n"
+                          "Hit [Shift+]WASD to walk and strafe.\nPress and move mouse to look around.\n"
+                          "Click Add New to increase the number of instances."));
+
+    meshSwitch = new QCheckBox(tr("&Use Qt logo"));
+    meshSwitch->setFocusPolicy(Qt::NoFocus); // do not interfere with vulkanWindow's keyboard input
+
+    counterLcd = new QLCDNumber(5);
+    counterLcd->setSegmentStyle(QLCDNumber::Filled);
+    counterLcd->display(m_count);
+
+    newButton = new QPushButton(tr("&Add new"));
+    newButton->setFocusPolicy(Qt::NoFocus);
+    quitButton = new QPushButton(tr("&Quit"));
+    quitButton->setFocusPolicy(Qt::NoFocus);
+    pauseButton = new QPushButton(tr("&Pause"));
+    pauseButton->setFocusPolicy(Qt::NoFocus);
+
+    connect(quitButton, &QPushButton::clicked, qApp, &QCoreApplication::quit);
+    connect(newButton, &QPushButton::clicked, vulkanWindow, [=] {
+        vulkanWindow->addNew();
+        m_count = vulkanWindow->instanceCount();
+        counterLcd->display(m_count);
+    });
+    connect(pauseButton, &QPushButton::clicked, vulkanWindow, &VulkanWindow::togglePaused);
+    connect(meshSwitch, &QCheckBox::clicked, vulkanWindow, &VulkanWindow::meshSwitched);
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(infoLabel, 0, 2);
+    layout->addWidget(meshSwitch, 1, 2);
+    layout->addWidget(createLabel(tr("INSTANCES")), 2, 2);
+    layout->addWidget(counterLcd, 3, 2);
+    layout->addWidget(newButton, 4, 2);
+    layout->addWidget(pauseButton, 5, 2);
+    layout->addWidget(quitButton, 6, 2);
+    layout->addWidget(wrapper, 0, 0, 7, 2);
+    setLayout(layout);
+}
+
+QLabel *MainWindow::createLabel(const QString &text)
+{
+    QLabel *lbl = new QLabel(text);
+    lbl->setAlignment(Qt::AlignHCenter | Qt::AlignBottom);
+    return lbl;
+}

examples/vulkan/hellovulkancubes/mainwindow.h

@@ -0,0 +1,36 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QLCDNumber;
+class QLabel;
+class QPushButton;
+class QCheckBox;
+QT_END_NAMESPACE
+
+class VulkanWindow;
+
+class MainWindow : public QWidget
+{
+public:
+    MainWindow(VulkanWindow *vulkanWindow);
+
+private:
+    QLabel *createLabel(const QString &text);
+
+    QLabel *infoLabel;
+    QCheckBox *meshSwitch;
+    QLCDNumber *counterLcd;
+    QPushButton *newButton;
+    QPushButton *quitButton;
+    QPushButton *pauseButton;
+
+    int m_count = 128;
+};
+
+#endif

examples/vulkan/hellovulkancubes/mesh.cpp

@@ -0,0 +1,51 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "mesh.h"
+#include <QtConcurrentRun>
+#include <QFile>
+
+void Mesh::load(const QString &fn)
+{
+    reset();
+    m_maybeRunning = true;
+    m_future = QtConcurrent::run([fn]() {
+        MeshData md;
+        QFile f(fn);
+        if (!f.open(QIODevice::ReadOnly)) {
+            qWarning("Failed to open %s", qPrintable(fn));
+            return md;
+        }
+        QByteArray buf = f.readAll();
+        const char *p = buf.constData();
+        quint32 format;
+        memcpy(&format, p, 4);
+        if (format != 1) {
+            qWarning("Invalid format in %s", qPrintable(fn));
+            return md;
+        }
+        int ofs = 4;
+        memcpy(&md.vertexCount, p + ofs, 4);
+        ofs += 4;
+        memcpy(md.aabb, p + ofs, 6 * 4);
+        ofs += 6 * 4;
+        const int byteCount = md.vertexCount * 8 * 4;
+        md.geom.resize(byteCount);
+        memcpy(md.geom.data(), p + ofs, byteCount);
+        return md;
+    });
+}
+
+MeshData *Mesh::data()
+{
+    if (m_maybeRunning && !m_data.isValid())
+        m_data = m_future.result();
+
+    return &m_data;
+}
+
+void Mesh::reset()
+{
+    *data() = MeshData();
+    m_maybeRunning = false;
+}

examples/vulkan/hellovulkancubes/mesh.h

@@ -0,0 +1,32 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef MESH_H
+#define MESH_H
+
+#include <QString>
+#include <QFuture>
+
+struct MeshData
+{
+    bool isValid() const { return vertexCount > 0; }
+    int vertexCount = 0;
+    float aabb[6];
+    QByteArray geom; // x, y, z, u, v, nx, ny, nz
+};
+
+class Mesh
+{
+public:
+    void load(const QString &fn);
+    MeshData *data();
+    bool isValid() { return data()->isValid(); }
+    void reset();
+
+private:
+    bool m_maybeRunning = false;
+    QFuture<MeshData> m_future;
+    MeshData m_data;
+};
+
+#endif

examples/vulkan/hellovulkancubes/renderer.h

@@ -0,0 +1,111 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include "vulkanwindow.h"
+#include "mesh.h"
+#include "shader.h"
+#include "camera.h"
+#include <QFutureWatcher>
+#include <QMutex>
+
+class Renderer : public QVulkanWindowRenderer
+{
+public:
+    Renderer(VulkanWindow *w, int initialCount);
+
+    void preInitResources() override;
+    void initResources() override;
+    void initSwapChainResources() override;
+    void releaseSwapChainResources() override;
+    void releaseResources() override;
+
+    void startNextFrame() override;
+
+    bool animating() const { return m_animating; }
+    void setAnimating(bool a) { m_animating = a; }
+
+    int instanceCount() const { return m_instCount; }
+    void addNew();
+
+    void yaw(float degrees);
+    void pitch(float degrees);
+    void walk(float amount);
+    void strafe(float amount);
+
+    void setUseLogo(bool b);
+
+private:
+    void createPipelines();
+    void createItemPipeline();
+    void createFloorPipeline();
+    void ensureBuffers();
+    void ensureInstanceBuffer();
+    void getMatrices(QMatrix4x4 *mvp, QMatrix4x4 *model, QMatrix3x3 *modelNormal, QVector3D *eyePos);
+    void writeFragUni(quint8 *p, const QVector3D &eyePos);
+    void buildFrame();
+    void buildDrawCallsForItems();
+    void buildDrawCallsForFloor();
+
+    void markViewProjDirty() { m_vpDirty = m_window->concurrentFrameCount(); }
+
+    VulkanWindow *m_window;
+    QVulkanDeviceFunctions *m_devFuncs;
+
+    bool m_useLogo = false;
+    Mesh m_blockMesh;
+    Mesh m_logoMesh;
+    VkBuffer m_blockVertexBuf = VK_NULL_HANDLE;
+    VkBuffer m_logoVertexBuf = VK_NULL_HANDLE;
+    struct {
+        VkDeviceSize vertUniSize;
+        VkDeviceSize fragUniSize;
+        VkDeviceSize uniMemStartOffset;
+        Shader vs;
+        Shader fs;
+        VkDescriptorPool descPool = VK_NULL_HANDLE;
+        VkDescriptorSetLayout descSetLayout = VK_NULL_HANDLE;
+        VkDescriptorSet descSet;
+        VkPipelineLayout pipelineLayout = VK_NULL_HANDLE;
+        VkPipeline pipeline = VK_NULL_HANDLE;
+    } m_itemMaterial;
+
+    VkBuffer m_floorVertexBuf = VK_NULL_HANDLE;
+    struct {
+        Shader vs;
+        Shader fs;
+        VkPipelineLayout pipelineLayout = VK_NULL_HANDLE;
+        VkPipeline pipeline = VK_NULL_HANDLE;
+    } m_floorMaterial;
+
+    VkDeviceMemory m_bufMem = VK_NULL_HANDLE;
+    VkBuffer m_uniBuf = VK_NULL_HANDLE;
+
+    VkPipelineCache m_pipelineCache = VK_NULL_HANDLE;
+    QFuture<void> m_pipelinesFuture;
+
+    QVector3D m_lightPos;
+    Camera m_cam;
+
+    QMatrix4x4 m_proj;
+    int m_vpDirty = 0;
+    QMatrix4x4 m_floorModel;
+
+    bool m_animating;
+    float m_rotation = 0.0f;
+
+    int m_instCount;
+    int m_preparedInstCount = 0;
+    QByteArray m_instData;
+    VkBuffer m_instBuf = VK_NULL_HANDLE;
+    VkDeviceMemory m_instBufMem = VK_NULL_HANDLE;
+
+    QFutureWatcher<void> m_frameWatcher;
+    bool m_framePending;
+
+    QMutex m_guiMutex;
+};
+
+#endif

examples/vulkan/hellovulkancubes/shader.cpp

@@ -0,0 +1,47 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "shader.h"
+#include <QtConcurrentRun>
+#include <QFile>
+#include <QVulkanDeviceFunctions>
+
+void Shader::load(QVulkanInstance *inst, VkDevice dev, const QString &fn)
+{
+    reset();
+    m_maybeRunning = true;
+    m_future = QtConcurrent::run([inst, dev, fn]() {
+        ShaderData sd;
+        QFile f(fn);
+        if (!f.open(QIODevice::ReadOnly)) {
+            qWarning("Failed to open %s", qPrintable(fn));
+            return sd;
+        }
+        QByteArray blob = f.readAll();
+        VkShaderModuleCreateInfo shaderInfo;
+        memset(&shaderInfo, 0, sizeof(shaderInfo));
+        shaderInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+        shaderInfo.codeSize = blob.size();
+        shaderInfo.pCode = reinterpret_cast<const uint32_t *>(blob.constData());
+        VkResult err = inst->deviceFunctions(dev)->vkCreateShaderModule(dev, &shaderInfo, nullptr, &sd.shaderModule);
+        if (err != VK_SUCCESS) {
+            qWarning("Failed to create shader module: %d", err);
+            return sd;
+        }
+        return sd;
+    });
+}
+
+ShaderData *Shader::data()
+{
+    if (m_maybeRunning && !m_data.isValid())
+        m_data = m_future.result();
+
+    return &m_data;
+}
+
+void Shader::reset()
+{
+    *data() = ShaderData();
+    m_maybeRunning = false;
+}

examples/vulkan/hellovulkancubes/shader.h

@@ -0,0 +1,30 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef SHADER_H
+#define SHADER_H
+
+#include <QVulkanInstance>
+#include <QFuture>
+
+struct ShaderData
+{
+    bool isValid() const { return shaderModule != VK_NULL_HANDLE; }
+    VkShaderModule shaderModule = VK_NULL_HANDLE;
+};
+
+class Shader
+{
+public:
+    void load(QVulkanInstance *inst, VkDevice dev, const QString &fn);
+    ShaderData *data();
+    bool isValid() { return data()->isValid(); }
+    void reset();
+
+private:
+    bool m_maybeRunning = false;
+    QFuture<ShaderData> m_future;
+    ShaderData m_data;
+};
+
+#endif

examples/vulkan/hellovulkancubes/vulkanwindow.cpp

@@ -0,0 +1,87 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "vulkanwindow.h"
+#include "renderer.h"
+#include <QMouseEvent>
+#include <QKeyEvent>
+
+VulkanWindow::VulkanWindow(bool dbg)
+    : m_debug(dbg)
+{
+}
+
+QVulkanWindowRenderer *VulkanWindow::createRenderer()
+{
+    m_renderer = new Renderer(this, 128);
+    return m_renderer;
+}
+
+void VulkanWindow::addNew()
+{
+    m_renderer->addNew();
+}
+
+void VulkanWindow::togglePaused()
+{
+    m_renderer->setAnimating(!m_renderer->animating());
+}
+
+void VulkanWindow::meshSwitched(bool enable)
+{
+    m_renderer->setUseLogo(enable);
+}
+
+void VulkanWindow::mousePressEvent(QMouseEvent *e)
+{
+    m_pressed = true;
+    m_lastPos = e->position().toPoint();
+}
+
+void VulkanWindow::mouseReleaseEvent(QMouseEvent *)
+{
+    m_pressed = false;
+}
+
+void VulkanWindow::mouseMoveEvent(QMouseEvent *e)
+{
+    if (!m_pressed)
+        return;
+
+    int dx = e->position().toPoint().x() - m_lastPos.x();
+    int dy = e->position().toPoint().y() - m_lastPos.y();
+
+    if (dy)
+        m_renderer->pitch(dy / 10.0f);
+
+    if (dx)
+        m_renderer->yaw(dx / 10.0f);
+
+    m_lastPos = e->position().toPoint();
+}
+
+void VulkanWindow::keyPressEvent(QKeyEvent *e)
+{
+    const float amount = e->modifiers().testFlag(Qt::ShiftModifier) ? 1.0f : 0.1f;
+    switch (e->key()) {
+    case Qt::Key_W:
+        m_renderer->walk(amount);
+        break;
+    case Qt::Key_S:
+        m_renderer->walk(-amount);
+        break;
+    case Qt::Key_A:
+        m_renderer->strafe(-amount);
+        break;
+    case Qt::Key_D:
+        m_renderer->strafe(amount);
+        break;
+    default:
+        break;
+    }
+}
+
+int VulkanWindow::instanceCount() const
+{
+    return m_renderer->instanceCount();
+}

examples/vulkan/hellovulkancubes/vulkanwindow.h

@@ -0,0 +1,38 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef VULKANWINDOW_H
+#define VULKANWINDOW_H
+
+#include <QVulkanWindow>
+
+class Renderer;
+
+class VulkanWindow : public QVulkanWindow
+{
+public:
+    VulkanWindow(bool dbg);
+
+    QVulkanWindowRenderer *createRenderer() override;
+
+    bool isDebugEnabled() const { return m_debug; }
+    int instanceCount() const;
+
+public slots:
+    void addNew();
+    void togglePaused();
+    void meshSwitched(bool enable);
+
+private:
+    void mousePressEvent(QMouseEvent *) override;
+    void mouseReleaseEvent(QMouseEvent *) override;
+    void mouseMoveEvent(QMouseEvent *) override;
+    void keyPressEvent(QKeyEvent *) override;
+
+    bool m_debug;
+    Renderer *m_renderer;
+    bool m_pressed = false;
+    QPoint m_lastPos;
+};
+
+#endif

examples/vulkan/hellovulkantriangle/CMakeLists.txt

@@ -0,0 +1,57 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(hellovulkantriangle LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/vulkan/hellovulkantriangle")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui)
+
+qt_standard_project_setup()
+
+qt_add_executable(hellovulkantriangle
+    ../shared/trianglerenderer.cpp ../shared/trianglerenderer.h
+    main.cpp
+)
+
+set_target_properties(hellovulkantriangle PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(hellovulkantriangle PRIVATE
+    Qt6::Core
+    Qt6::Gui
+)
+
+# Resources:
+set_source_files_properties("../shared/color_frag.spv"
+    PROPERTIES QT_RESOURCE_ALIAS "color_frag.spv"
+)
+
+set_source_files_properties("../shared/color_vert.spv"
+    PROPERTIES QT_RESOURCE_ALIAS "color_vert.spv"
+)
+
+set(hellovulkantriangle_resource_files
+    "../shared/color_frag.spv"
+    "../shared/color_vert.spv"
+)
+
+qt_add_resources(hellovulkantriangle "hellovulkantriangle"
+    PREFIX
+        "/"
+    FILES
+        ${hellovulkantriangle_resource_files}
+)
+
+install(TARGETS hellovulkantriangle
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/vulkan/hellovulkantriangle/hellovulkantriangle.pro

@@ -0,0 +1,12 @@
+HEADERS += \
+    ../shared/trianglerenderer.h
+
+SOURCES += \
+    main.cpp \
+    ../shared/trianglerenderer.cpp
+
+RESOURCES += hellovulkantriangle.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/vulkan/hellovulkantriangle
+INSTALLS += target

examples/vulkan/hellovulkantriangle/hellovulkantriangle.qrc

@@ -0,0 +1,6 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file alias="color_vert.spv">../shared/color_vert.spv</file>
+    <file alias="color_frag.spv">../shared/color_frag.spv</file>
+</qresource>
+</RCC>

examples/vulkan/hellovulkantriangle/main.cpp

@@ -0,0 +1,46 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QGuiApplication>
+#include <QVulkanInstance>
+#include <QLoggingCategory>
+#include "../shared/trianglerenderer.h"
+
+Q_LOGGING_CATEGORY(lcVk, "qt.vulkan")
+
+//! [2]
+class VulkanWindow : public QVulkanWindow
+{
+public:
+    QVulkanWindowRenderer *createRenderer() override;
+};
+//! [2]
+
+QVulkanWindowRenderer *VulkanWindow::createRenderer()
+{
+    return new TriangleRenderer(this, true); // try MSAA, when available
+}
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QLoggingCategory::setFilterRules(QStringLiteral("qt.vulkan=true"));
+
+//! [0]
+    QVulkanInstance inst;
+    inst.setLayers({ "VK_LAYER_KHRONOS_validation" });
+    if (!inst.create())
+        qFatal("Failed to create Vulkan instance: %d", inst.errorCode());
+//! [0]
+
+//! [1]
+    VulkanWindow w;
+    w.setVulkanInstance(&inst);
+
+    w.resize(1024, 768);
+    w.show();
+//! [1]
+
+    return app.exec();
+}

examples/vulkan/hellovulkanwidget/CMakeLists.txt

@@ -0,0 +1,59 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(hellovulkanwidget LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/vulkan/hellovulkanwidget")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(hellovulkanwidget
+    ../shared/trianglerenderer.cpp ../shared/trianglerenderer.h
+    hellovulkanwidget.cpp hellovulkanwidget.h
+    main.cpp
+)
+
+set_target_properties(hellovulkanwidget PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(hellovulkanwidget PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+# Resources:
+set_source_files_properties("../shared/color_frag.spv"
+    PROPERTIES QT_RESOURCE_ALIAS "color_frag.spv"
+)
+
+set_source_files_properties("../shared/color_vert.spv"
+    PROPERTIES QT_RESOURCE_ALIAS "color_vert.spv"
+)
+
+set(hellovulkanwidget_resource_files
+    "../shared/color_frag.spv"
+    "../shared/color_vert.spv"
+)
+
+qt_add_resources(hellovulkanwidget "hellovulkanwidget"
+    PREFIX
+        "/"
+    FILES
+        ${hellovulkanwidget_resource_files}
+)
+
+install(TARGETS hellovulkanwidget
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/vulkan/hellovulkanwidget/hellovulkanwidget.cpp

@@ -0,0 +1,138 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#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::asprintf("Number of physical devices: %d\n", int(m_window->availablePhysicalDevices().count()));
+
+    QVulkanFunctions *f = inst->functions();
+    VkPhysicalDeviceProperties props;
+    f->vkGetPhysicalDeviceProperties(m_window->physicalDevice(), &props);
+    info += QString::asprintf("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::asprintf("    %s v%u\n", layer.name.constData(), layer.version);
+    info += QStringLiteral("Enabled instance layers:\n");
+    for (const QByteArray &layer : inst->layers())
+        info += QString::asprintf("    %s\n", layer.constData());
+
+    info += QStringLiteral("Supported instance extensions:\n");
+    for (const QVulkanExtension &ext : inst->supportedExtensions())
+        info += QString::asprintf("    %s v%u\n", ext.name.constData(), ext.version);
+    info += QStringLiteral("Enabled instance extensions:\n");
+    for (const QByteArray &ext : inst->extensions())
+        info += QString::asprintf("    %s\n", ext.constData());
+
+    info += QString::asprintf("Color format: %u\nDepth-stencil format: %u\n",
+                              m_window->colorFormat(), m_window->depthStencilFormat());
+
+    info += QStringLiteral("Supported sample counts:");
+    const QList<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);
+}

examples/vulkan/hellovulkanwidget/hellovulkanwidget.h

@@ -0,0 +1,58 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef HELLOVULKANWIDGET_H
+#define HELLOVULKANWIDGET_H
+
+#include "../shared/trianglerenderer.h"
+#include <QWidget>
+
+class VulkanWindow;
+
+QT_BEGIN_NAMESPACE
+class QTabWidget;
+class QPlainTextEdit;
+class QLCDNumber;
+QT_END_NAMESPACE
+
+class MainWindow : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit MainWindow(VulkanWindow *w, QPlainTextEdit *logWidget);
+
+public slots:
+    void onVulkanInfoReceived(const QString &text);
+    void onFrameQueued(int colorValue);
+    void onGrabRequested();
+
+private:
+    VulkanWindow *m_window;
+    QTabWidget *m_infoTab;
+    QPlainTextEdit *m_info;
+    QLCDNumber *m_number;
+};
+
+class VulkanRenderer : public TriangleRenderer
+{
+public:
+    VulkanRenderer(VulkanWindow *w);
+
+    void initResources() override;
+    void startNextFrame() override;
+};
+
+class VulkanWindow : public QVulkanWindow
+{
+    Q_OBJECT
+
+public:
+    QVulkanWindowRenderer *createRenderer() override;
+
+signals:
+    void vulkanInfoReceived(const QString &text);
+    void frameQueued(int colorValue);
+};
+
+#endif // HELLOVULKANWIDGET_H

examples/vulkan/hellovulkanwidget/hellovulkanwidget.pro

@@ -0,0 +1,16 @@
+QT += widgets
+
+HEADERS += \
+    hellovulkanwidget.h \
+    ../shared/trianglerenderer.h
+
+SOURCES += \
+    hellovulkanwidget.cpp \
+    main.cpp \
+    ../shared/trianglerenderer.cpp
+
+RESOURCES += hellovulkanwidget.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/vulkan/hellovulkanwidget
+INSTALLS += target

examples/vulkan/hellovulkanwidget/hellovulkanwidget.qrc

@@ -0,0 +1,6 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file alias="color_vert.spv">../shared/color_vert.spv</file>
+    <file alias="color_frag.spv">../shared/color_frag.spv</file>
+</qresource>
+</RCC>

examples/vulkan/hellovulkanwidget/main.cpp

@@ -0,0 +1,53 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+#include <QPlainTextEdit>
+#include <QVulkanInstance>
+#include <QLibraryInfo>
+#include <QLoggingCategory>
+#include <QPointer>
+#include "hellovulkanwidget.h"
+
+Q_LOGGING_CATEGORY(lcVk, "qt.vulkan")
+
+static QPointer<QPlainTextEdit> messageLogWidget;
+static QtMessageHandler oldMessageHandler = nullptr;
+
+static void messageHandler(QtMsgType msgType, const QMessageLogContext &logContext, const QString &text)
+{
+    if (!messageLogWidget.isNull())
+        messageLogWidget->appendPlainText(text);
+    if (oldMessageHandler)
+        oldMessageHandler(msgType, logContext, text);
+}
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    messageLogWidget = new QPlainTextEdit(QLatin1String(QLibraryInfo::build()) + QLatin1Char('\n'));
+    messageLogWidget->setReadOnly(true);
+
+    oldMessageHandler = qInstallMessageHandler(messageHandler);
+
+    QLoggingCategory::setFilterRules(QStringLiteral("qt.vulkan=true"));
+
+    QVulkanInstance inst;
+    inst.setLayers({ "VK_LAYER_KHRONOS_validation" });
+
+    if (!inst.create())
+        qFatal("Failed to create Vulkan instance: %d", inst.errorCode());
+
+    VulkanWindow *vulkanWindow = new VulkanWindow;
+    vulkanWindow->setVulkanInstance(&inst);
+
+    MainWindow mainWindow(vulkanWindow, messageLogWidget.data());
+    QObject::connect(vulkanWindow, &VulkanWindow::vulkanInfoReceived, &mainWindow, &MainWindow::onVulkanInfoReceived);
+    QObject::connect(vulkanWindow, &VulkanWindow::frameQueued, &mainWindow, &MainWindow::onFrameQueued);
+
+    mainWindow.resize(1024, 768);
+    mainWindow.show();
+
+    return app.exec();
+}

examples/vulkan/shared/block.txt

@@ -0,0 +1,100 @@
+# Blender v2.78 (sub 0) OBJ File: ''
+# www.blender.org
+mtllib block.mtl
+o Cube_Cube.001
+v 0.450000 -0.500000 -0.450000
+v 0.450000 -0.500000 0.450000
+v -0.450000 -0.500000 0.450000
+v -0.450000 -0.500000 -0.450000
+v -0.500000 0.450000 0.450000
+v -0.500000 0.450000 -0.450000
+v -0.500000 -0.450000 -0.450000
+v -0.500000 -0.450000 0.450000
+v -0.450000 0.500000 -0.450000
+v -0.450000 0.500000 0.450000
+v 0.450000 0.500000 0.450000
+v 0.450000 0.500000 -0.450000
+v -0.450000 0.450000 -0.500000
+v 0.450000 0.450000 -0.500000
+v 0.450000 -0.450000 -0.500000
+v -0.450000 -0.450000 -0.500000
+v 0.450000 0.450000 0.500000
+v -0.450000 0.450000 0.500000
+v -0.450000 -0.450000 0.500000
+v 0.450000 -0.450000 0.500000
+v 0.500000 -0.450000 -0.450000
+v 0.500000 0.450000 -0.450000
+v 0.500000 -0.450000 0.450000
+v 0.500000 0.450000 0.450000
+vn 0.0000 -1.0000 -0.0000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 1.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 0.0000 -0.0000 1.0000
+vn 0.5774 -0.5773 -0.5774
+vn 0.5774 0.5774 -0.5774
+vn 0.5774 -0.5774 0.5774
+vn 0.5774 0.5773 0.5774
+vn -0.5774 -0.5773 -0.5774
+vn -0.5773 0.5774 -0.5774
+vn -0.5774 -0.5774 0.5774
+vn -0.5774 0.5773 0.5774
+vn 0.7071 0.0000 -0.7071
+vn 0.7071 0.7071 0.0000
+vn 0.7071 -0.0000 0.7071
+vn 0.7071 -0.7071 -0.0000
+vn 0.0000 0.7071 0.7071
+vn -0.7071 -0.0000 0.7071
+vn 0.0000 -0.7071 0.7071
+vn -0.7071 0.7071 0.0000
+vn -0.7071 0.0000 -0.7071
+vn -0.7071 -0.7071 -0.0000
+vn 0.0000 0.7071 -0.7071
+vn 0.0000 -0.7071 -0.7071
+vn 1.0000 0.0000 0.0000
+usemtl None
+s 1
+f 2//1 4//1 1//1
+f 6//2 8//2 5//2
+f 10//3 12//3 9//3
+f 14//4 16//4 13//4
+f 18//5 20//5 17//5
+f 15//6 21//6 1//6
+f 14//7 12//7 22//7
+f 20//8 2//8 23//8
+f 11//9 17//9 24//9
+f 16//10 4//10 7//10
+f 9//11 13//11 6//11
+f 8//12 3//12 19//12
+f 10//13 5//13 18//13
+f 14//14 21//14 15//14
+f 11//15 22//15 12//15
+f 20//16 24//16 17//16
+f 1//17 23//17 2//17
+f 10//18 17//18 11//18
+f 8//19 18//19 5//19
+f 2//20 19//20 3//20
+f 9//21 5//21 10//21
+f 16//22 6//22 13//22
+f 3//23 7//23 4//23
+f 12//24 13//24 9//24
+f 4//25 15//25 1//25
+f 24//26 21//26 22//26
+f 2//1 3//1 4//1
+f 6//2 7//2 8//2
+f 10//3 11//3 12//3
+f 14//4 15//4 16//4
+f 18//5 19//5 20//5
+f 14//14 22//14 21//14
+f 11//15 24//15 22//15
+f 20//16 23//16 24//16
+f 1//17 21//17 23//17
+f 10//18 18//18 17//18
+f 8//19 19//19 18//19
+f 2//20 20//20 19//20
+f 9//21 6//21 5//21
+f 16//22 7//22 6//22
+f 3//23 8//23 7//23
+f 12//24 14//24 13//24
+f 4//25 16//25 15//25
+f 24//26 23//26 21//26

examples/vulkan/shared/color.frag

@@ -0,0 +1,10 @@
+#version 440
+
+layout(location = 0) in vec3 v_color;
+
+layout(location = 0) out vec4 fragColor;
+
+void main()
+{
+    fragColor = vec4(v_color, 1.0);
+}

examples/vulkan/shared/color.vert

@@ -0,0 +1,18 @@
+#version 440
+
+layout(location = 0) in vec4 position;
+layout(location = 1) in vec3 color;
+
+layout(location = 0) out vec3 v_color;
+
+layout(std140, binding = 0) uniform buf {
+    mat4 mvp;
+} ubuf;
+
+out gl_PerVertex { vec4 gl_Position; };
+
+void main()
+{
+    v_color = color;
+    gl_Position = ubuf.mvp * position;
+}

examples/vulkan/shared/objconvert.js

@@ -0,0 +1,194 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+var fs = require('fs');
+
+var metadata = {
+    vertexCount: 0,
+    aabb: [[null, null], [null, null], [null, null]],
+    emitVertex: function(v) {
+        ++metadata.vertexCount;
+        var aabb = metadata.aabb;
+        if (aabb[0][0] === null || v[0] < aabb[0][0]) // min x
+            aabb[0][0] = v[0];
+        if (aabb[0][1] === null || v[0] > aabb[0][1]) // max x
+            aabb[0][1] = v[0];
+        if (aabb[1][0] === null || v[1] < aabb[1][0]) // min y
+            aabb[1][0] = v[1];
+        if (aabb[1][1] === null || v[1] > aabb[1][1]) // max y
+            aabb[1][1] = v[1];
+        if (aabb[2][0] === null || v[2] < aabb[2][0]) // min z
+            aabb[2][0] = v[2];
+        if (aabb[2][1] === null || v[2] > aabb[2][1]) // max z
+            aabb[2][1] = v[2];
+    },
+    getBuffer: function() {
+        var aabb = metadata.aabb;
+        console.log(metadata.vertexCount + " vertices");
+        console.log("AABB: " + aabb[0][0] + ".." + aabb[0][1]
+                    + ", " + aabb[1][0] + ".." + aabb[1][1]
+                    + ", " + aabb[2][0] + ".." + aabb[2][1]);
+        var buf = new Buffer((2 + 6) * 4);
+        var format = 1, p = 0;
+        buf.writeUInt32LE(format, p++);
+        buf.writeUInt32LE(metadata.vertexCount, p++ * 4);
+        for (var i = 0; i < 3; ++i) {
+            buf.writeFloatLE(aabb[i][0], p++ * 4);
+            buf.writeFloatLE(aabb[i][1], p++ * 4);
+        }
+        return buf;
+    }
+};
+
+function makeVec(s, n) {
+    var v = [];
+    s.split(' ').forEach(function (coordStr) {
+        var coord = parseFloat(coordStr);
+        if (!isNaN(coord))
+            v.push(coord);
+    });
+    if (v.length != n) {
+        console.error("Wrong vector size, expected " + n + ", got " + v.length);
+        process.exit();
+    }
+    return v;
+}
+
+function parseObj(filename, callback) {
+    fs.readFile(filename, "ascii", function (err, data) {
+        if (err)
+            throw err;
+        var groupCount = 0;
+        var parsed = { 'vertices': [], 'normals': [], 'texcoords': [], 'links': [] };
+        var missingTexCount = 0, missingNormCount = 0;
+        data.split('\n').forEach(function (line) {
+            var s = line.trim();
+            if (!s.length || groupCount > 1)
+                return;
+            if (s[0] === '#')
+                return;
+            if (s[0] === 'g') {
+                ++groupCount;
+            } else if (s.substr(0, 2) === "v ") {
+                parsed.vertices.push(makeVec(s, 3));
+            } else if (s.substr(0, 3) === "vn ") {
+                parsed.normals.push(makeVec(s, 3));
+            } else if (s.substr(0, 3) === "vt ") {
+                parsed.texcoords.push(makeVec(s, 2));
+            } else if (s.substr(0, 2) === "f ") {
+                var refs = s.split(' ');
+                var vertCount = refs.length - 1;
+                if (vertCount != 3)
+                    console.warn("Face " + parsed.links.length / 3 + " has " + vertCount + " vertices! (not triangulated?)");
+                for (var i = 1, ie = Math.min(4, refs.length); i < ie; ++i) {
+                    var refComps = refs[i].split('/');
+                    var vertIndex = parseInt(refComps[0]) - 1;
+                    var texIndex = -1;
+                    if (refComps.length >= 2 && refComps[1].length)
+                        texIndex = parseInt(refComps[1]) - 1;
+                    var normIndex = -1;
+                    if (refComps.length >= 3 && refComps[2].length)
+                        normIndex = parseInt(refComps[2]) - 1;
+                    parsed.links.push([vertIndex, texIndex, normIndex]);
+                    if (texIndex == -1)
+                        ++missingTexCount;
+                    if (normIndex == -1)
+                        ++missingNormCount;
+                }
+            }
+        });
+        console.log(missingTexCount + " missing texture coordinates, " + missingNormCount + " missing normals");
+        callback(parsed);
+    });
+}
+
+function fillVert(src, index, dst, elemCount, isVertexCoord) {
+    var vertex = [];
+    if (index >= 0) {
+        for (var i = 0; i < elemCount; ++i) {
+            var elem = src[index][i];
+            if (isVertexCoord)
+                vertex.push(elem);
+            dst.buf.writeFloatLE(elem, dst.bufptr++ * 4);
+        }
+        if (vertex.length == 3)
+            metadata.emitVertex(vertex);
+    } else {
+        if (isVertexCoord) {
+            console.error("Missing vertex");
+            process.exit();
+        }
+        for (var i = 0; i < elemCount; ++i)
+            dst.buf.writeFloatLE(0, dst.bufptr++ * 4);
+    }
+    return vertex;
+}
+
+function normalize(v) {
+    var len = v[0] * v[0] + v[1] * v[1] + v[2] * v[2];
+    if (len == 0.0 || len == 1.0)
+        return;
+    len = Math.sqrt(len);
+    return [ v[0] / len, v[1] / len, v[2] / len ];
+}
+
+function surfaceNormal(a, b, c) {
+    var u = [ b[0] - a[0], b[1] - a[1], b[2] - a[2] ];
+    var v = [ c[0] - a[0], c[1] - a[1], c[2] - a[2] ];
+    var result = [ u[1] * v[2] - u[2] * v[1],
+                   u[2] * v[0] - u[0] * v[2],
+                   u[0] * v[1] - u[1] * v[0] ];
+    return normalize(result);
+}
+
+function objDataToBuf(parsed) {
+    var floatCount = parsed.links.length * (3 + 2 + 3);
+    var buf = new Buffer(floatCount * 4);
+    var dst = { 'buf': buf, 'bufptr': 0 };
+    var tri = [];
+    var genNormals = false;
+    var genNormCount = 0;
+    for (var i = 0; i < parsed.links.length; ++i) {
+        var link = parsed.links[i];
+        var vertIndex = link[0], texIndex = link[1], normIndex = link[2];
+        tri.push(fillVert(parsed.vertices, vertIndex, dst, 3, true));
+        fillVert(parsed.texcoords, texIndex, dst, 2);
+        fillVert(parsed.normals, normIndex, dst, 3);
+        if (normIndex == -1)
+            genNormals = true;
+        if (tri.length == 3) {
+            if (genNormals) {
+                var norm = surfaceNormal(tri[0], tri[1], tri[2]);
+                for (var nvIdx = 0; nvIdx < 3; ++nvIdx) {
+                    dst.buf.writeFloatLE(norm[0], (dst.bufptr - 3 - nvIdx * 8) * 4);
+                    dst.buf.writeFloatLE(norm[1], (dst.bufptr - 2 - nvIdx * 8) * 4);
+                    dst.buf.writeFloatLE(norm[2], (dst.bufptr - 1 - nvIdx * 8) * 4);
+                }
+                genNormCount += 3;
+            }
+            tri = [];
+        }
+    }
+    if (genNormCount)
+        console.log("Generated " + genNormCount + " normals");
+    return buf;
+}
+
+var inFilename = process.argv[2];
+var outFilename = process.argv[3];
+
+if (process.argv.length < 4) {
+    console.log("Usage: objconvert file.obj file.buf");
+    process.exit();
+}
+
+parseObj(inFilename, function (parsed) {
+    var buf = objDataToBuf(parsed);
+    var f = fs.createWriteStream(outFilename);
+    f.on("error", function (e) { console.error(e); });
+    f.write(metadata.getBuffer());
+    f.write(buf);
+    f.end();
+    console.log("Written to " + outFilename + ", format is:");
+    console.log("  uint32 version, uint32 vertex_count, float32 aabb[6], vertex_count * (float32 vertex[3], float32 texcoord[2], float32 normal[3])");
+});

examples/vulkan/shared/trianglerenderer.cpp

@@ -0,0 +1,466 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "trianglerenderer.h"
+#include <QVulkanFunctions>
+#include <QFile>
+
+// Note that the vertex data and the projection matrix assume OpenGL. With
+// Vulkan Y is negated in clip space and the near/far plane is at 0/1 instead
+// of -1/1. These will be corrected for by an extra transformation when
+// calculating the modelview-projection matrix.
+static float vertexData[] = { // Y up, front = CCW
+     0.0f,   0.5f,   1.0f, 0.0f, 0.0f,
+    -0.5f,  -0.5f,   0.0f, 1.0f, 0.0f,
+     0.5f,  -0.5f,   0.0f, 0.0f, 1.0f
+};
+
+static const int UNIFORM_DATA_SIZE = 16 * sizeof(float);
+
+static inline VkDeviceSize aligned(VkDeviceSize v, VkDeviceSize byteAlign)
+{
+    return (v + byteAlign - 1) & ~(byteAlign - 1);
+}
+
+TriangleRenderer::TriangleRenderer(QVulkanWindow *w, bool msaa)
+    : m_window(w)
+{
+    if (msaa) {
+        const QList<int> counts = w->supportedSampleCounts();
+        qDebug() << "Supported sample counts:" << counts;
+        for (int s = 16; s >= 4; s /= 2) {
+            if (counts.contains(s)) {
+                qDebug("Requesting sample count %d", s);
+                m_window->setSampleCount(s);
+                break;
+            }
+        }
+    }
+}
+
+VkShaderModule TriangleRenderer::createShader(const QString &name)
+{
+    QFile file(name);
+    if (!file.open(QIODevice::ReadOnly)) {
+        qWarning("Failed to read shader %s", qPrintable(name));
+        return VK_NULL_HANDLE;
+    }
+    QByteArray blob = file.readAll();
+    file.close();
+
+    VkShaderModuleCreateInfo shaderInfo;
+    memset(&shaderInfo, 0, sizeof(shaderInfo));
+    shaderInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+    shaderInfo.codeSize = blob.size();
+    shaderInfo.pCode = reinterpret_cast<const uint32_t *>(blob.constData());
+    VkShaderModule shaderModule;
+    VkResult err = m_devFuncs->vkCreateShaderModule(m_window->device(), &shaderInfo, nullptr, &shaderModule);
+    if (err != VK_SUCCESS) {
+        qWarning("Failed to create shader module: %d", err);
+        return VK_NULL_HANDLE;
+    }
+
+    return shaderModule;
+}
+
+void TriangleRenderer::initResources()
+{
+    qDebug("initResources");
+
+    VkDevice dev = m_window->device();
+    m_devFuncs = m_window->vulkanInstance()->deviceFunctions(dev);
+
+    // Prepare the vertex and uniform data. The vertex data will never
+    // change so one buffer is sufficient regardless of the value of
+    // QVulkanWindow::CONCURRENT_FRAME_COUNT. Uniform data is changing per
+    // frame however so active frames have to have a dedicated copy.
+
+    // Use just one memory allocation and one buffer. We will then specify the
+    // appropriate offsets for uniform buffers in the VkDescriptorBufferInfo.
+    // Have to watch out for
+    // VkPhysicalDeviceLimits::minUniformBufferOffsetAlignment, though.
+
+    // The uniform buffer is not strictly required in this example, we could
+    // have used push constants as well since our single matrix (64 bytes) fits
+    // into the spec mandated minimum limit of 128 bytes. However, once that
+    // limit is not sufficient, the per-frame buffers, as shown below, will
+    // become necessary.
+
+    const int concurrentFrameCount = m_window->concurrentFrameCount();
+    const VkPhysicalDeviceLimits *pdevLimits = &m_window->physicalDeviceProperties()->limits;
+    const VkDeviceSize uniAlign = pdevLimits->minUniformBufferOffsetAlignment;
+    qDebug("uniform buffer offset alignment is %u", (uint) uniAlign);
+    VkBufferCreateInfo bufInfo;
+    memset(&bufInfo, 0, sizeof(bufInfo));
+    bufInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+    // Our internal layout is vertex, uniform, uniform, ... with each uniform buffer start offset aligned to uniAlign.
+    const VkDeviceSize vertexAllocSize = aligned(sizeof(vertexData), uniAlign);
+    const VkDeviceSize uniformAllocSize = aligned(UNIFORM_DATA_SIZE, uniAlign);
+    bufInfo.size = vertexAllocSize + concurrentFrameCount * uniformAllocSize;
+    bufInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
+
+    VkResult err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_buf);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create buffer: %d", err);
+
+    VkMemoryRequirements memReq;
+    m_devFuncs->vkGetBufferMemoryRequirements(dev, m_buf, &memReq);
+
+    VkMemoryAllocateInfo memAllocInfo = {
+        VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
+        nullptr,
+        memReq.size,
+        m_window->hostVisibleMemoryIndex()
+    };
+
+    err = m_devFuncs->vkAllocateMemory(dev, &memAllocInfo, nullptr, &m_bufMem);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to allocate memory: %d", err);
+
+    err = m_devFuncs->vkBindBufferMemory(dev, m_buf, m_bufMem, 0);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to bind buffer memory: %d", err);
+
+    quint8 *p;
+    err = m_devFuncs->vkMapMemory(dev, m_bufMem, 0, memReq.size, 0, reinterpret_cast<void **>(&p));
+    if (err != VK_SUCCESS)
+        qFatal("Failed to map memory: %d", err);
+    memcpy(p, vertexData, sizeof(vertexData));
+    QMatrix4x4 ident;
+    memset(m_uniformBufInfo, 0, sizeof(m_uniformBufInfo));
+    for (int i = 0; i < concurrentFrameCount; ++i) {
+        const VkDeviceSize offset = vertexAllocSize + i * uniformAllocSize;
+        memcpy(p + offset, ident.constData(), 16 * sizeof(float));
+        m_uniformBufInfo[i].buffer = m_buf;
+        m_uniformBufInfo[i].offset = offset;
+        m_uniformBufInfo[i].range = uniformAllocSize;
+    }
+    m_devFuncs->vkUnmapMemory(dev, m_bufMem);
+
+    VkVertexInputBindingDescription vertexBindingDesc = {
+        0, // binding
+        5 * sizeof(float),
+        VK_VERTEX_INPUT_RATE_VERTEX
+    };
+    VkVertexInputAttributeDescription vertexAttrDesc[] = {
+        { // position
+            0, // location
+            0, // binding
+            VK_FORMAT_R32G32_SFLOAT,
+            0
+        },
+        { // color
+            1,
+            0,
+            VK_FORMAT_R32G32B32_SFLOAT,
+            2 * sizeof(float)
+        }
+    };
+
+    VkPipelineVertexInputStateCreateInfo vertexInputInfo;
+    vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+    vertexInputInfo.pNext = nullptr;
+    vertexInputInfo.flags = 0;
+    vertexInputInfo.vertexBindingDescriptionCount = 1;
+    vertexInputInfo.pVertexBindingDescriptions = &vertexBindingDesc;
+    vertexInputInfo.vertexAttributeDescriptionCount = 2;
+    vertexInputInfo.pVertexAttributeDescriptions = vertexAttrDesc;
+
+    // Set up descriptor set and its layout.
+    VkDescriptorPoolSize descPoolSizes = { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, uint32_t(concurrentFrameCount) };
+    VkDescriptorPoolCreateInfo descPoolInfo;
+    memset(&descPoolInfo, 0, sizeof(descPoolInfo));
+    descPoolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+    descPoolInfo.maxSets = concurrentFrameCount;
+    descPoolInfo.poolSizeCount = 1;
+    descPoolInfo.pPoolSizes = &descPoolSizes;
+    err = m_devFuncs->vkCreateDescriptorPool(dev, &descPoolInfo, nullptr, &m_descPool);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create descriptor pool: %d", err);
+
+    VkDescriptorSetLayoutBinding layoutBinding = {
+        0, // binding
+        VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
+        1,
+        VK_SHADER_STAGE_VERTEX_BIT,
+        nullptr
+    };
+    VkDescriptorSetLayoutCreateInfo descLayoutInfo = {
+        VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
+        nullptr,
+        0,
+        1,
+        &layoutBinding
+    };
+    err = m_devFuncs->vkCreateDescriptorSetLayout(dev, &descLayoutInfo, nullptr, &m_descSetLayout);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create descriptor set layout: %d", err);
+
+    for (int i = 0; i < concurrentFrameCount; ++i) {
+        VkDescriptorSetAllocateInfo descSetAllocInfo = {
+            VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
+            nullptr,
+            m_descPool,
+            1,
+            &m_descSetLayout
+        };
+        err = m_devFuncs->vkAllocateDescriptorSets(dev, &descSetAllocInfo, &m_descSet[i]);
+        if (err != VK_SUCCESS)
+            qFatal("Failed to allocate descriptor set: %d", err);
+
+        VkWriteDescriptorSet descWrite;
+        memset(&descWrite, 0, sizeof(descWrite));
+        descWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+        descWrite.dstSet = m_descSet[i];
+        descWrite.descriptorCount = 1;
+        descWrite.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
+        descWrite.pBufferInfo = &m_uniformBufInfo[i];
+        m_devFuncs->vkUpdateDescriptorSets(dev, 1, &descWrite, 0, nullptr);
+    }
+
+    // Pipeline cache
+    VkPipelineCacheCreateInfo pipelineCacheInfo;
+    memset(&pipelineCacheInfo, 0, sizeof(pipelineCacheInfo));
+    pipelineCacheInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
+    err = m_devFuncs->vkCreatePipelineCache(dev, &pipelineCacheInfo, nullptr, &m_pipelineCache);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create pipeline cache: %d", err);
+
+    // Pipeline layout
+    VkPipelineLayoutCreateInfo pipelineLayoutInfo;
+    memset(&pipelineLayoutInfo, 0, sizeof(pipelineLayoutInfo));
+    pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+    pipelineLayoutInfo.setLayoutCount = 1;
+    pipelineLayoutInfo.pSetLayouts = &m_descSetLayout;
+    err = m_devFuncs->vkCreatePipelineLayout(dev, &pipelineLayoutInfo, nullptr, &m_pipelineLayout);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create pipeline layout: %d", err);
+
+    // Shaders
+    VkShaderModule vertShaderModule = createShader(QStringLiteral(":/color_vert.spv"));
+    VkShaderModule fragShaderModule = createShader(QStringLiteral(":/color_frag.spv"));
+
+    // Graphics pipeline
+    VkGraphicsPipelineCreateInfo pipelineInfo;
+    memset(&pipelineInfo, 0, sizeof(pipelineInfo));
+    pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
+
+    VkPipelineShaderStageCreateInfo shaderStages[2] = {
+        {
+            VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+            nullptr,
+            0,
+            VK_SHADER_STAGE_VERTEX_BIT,
+            vertShaderModule,
+            "main",
+            nullptr
+        },
+        {
+            VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+            nullptr,
+            0,
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            fragShaderModule,
+            "main",
+            nullptr
+        }
+    };
+    pipelineInfo.stageCount = 2;
+    pipelineInfo.pStages = shaderStages;
+
+    pipelineInfo.pVertexInputState = &vertexInputInfo;
+
+    VkPipelineInputAssemblyStateCreateInfo ia;
+    memset(&ia, 0, sizeof(ia));
+    ia.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
+    ia.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
+    pipelineInfo.pInputAssemblyState = &ia;
+
+    // The viewport and scissor will be set dynamically via vkCmdSetViewport/Scissor.
+    // This way the pipeline does not need to be touched when resizing the window.
+    VkPipelineViewportStateCreateInfo vp;
+    memset(&vp, 0, sizeof(vp));
+    vp.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
+    vp.viewportCount = 1;
+    vp.scissorCount = 1;
+    pipelineInfo.pViewportState = &vp;
+
+    VkPipelineRasterizationStateCreateInfo rs;
+    memset(&rs, 0, sizeof(rs));
+    rs.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
+    rs.polygonMode = VK_POLYGON_MODE_FILL;
+    rs.cullMode = VK_CULL_MODE_NONE; // we want the back face as well
+    rs.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
+    rs.lineWidth = 1.0f;
+    pipelineInfo.pRasterizationState = &rs;
+
+    VkPipelineMultisampleStateCreateInfo ms;
+    memset(&ms, 0, sizeof(ms));
+    ms.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
+    // Enable multisampling.
+    ms.rasterizationSamples = m_window->sampleCountFlagBits();
+    pipelineInfo.pMultisampleState = &ms;
+
+    VkPipelineDepthStencilStateCreateInfo ds;
+    memset(&ds, 0, sizeof(ds));
+    ds.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
+    ds.depthTestEnable = VK_TRUE;
+    ds.depthWriteEnable = VK_TRUE;
+    ds.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL;
+    pipelineInfo.pDepthStencilState = &ds;
+
+    VkPipelineColorBlendStateCreateInfo cb;
+    memset(&cb, 0, sizeof(cb));
+    cb.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
+    // no blend, write out all of rgba
+    VkPipelineColorBlendAttachmentState att;
+    memset(&att, 0, sizeof(att));
+    att.colorWriteMask = 0xF;
+    cb.attachmentCount = 1;
+    cb.pAttachments = &att;
+    pipelineInfo.pColorBlendState = &cb;
+
+    VkDynamicState dynEnable[] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
+    VkPipelineDynamicStateCreateInfo dyn;
+    memset(&dyn, 0, sizeof(dyn));
+    dyn.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
+    dyn.dynamicStateCount = sizeof(dynEnable) / sizeof(VkDynamicState);
+    dyn.pDynamicStates = dynEnable;
+    pipelineInfo.pDynamicState = &dyn;
+
+    pipelineInfo.layout = m_pipelineLayout;
+    pipelineInfo.renderPass = m_window->defaultRenderPass();
+
+    err = m_devFuncs->vkCreateGraphicsPipelines(dev, m_pipelineCache, 1, &pipelineInfo, nullptr, &m_pipeline);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create graphics pipeline: %d", err);
+
+    if (vertShaderModule)
+        m_devFuncs->vkDestroyShaderModule(dev, vertShaderModule, nullptr);
+    if (fragShaderModule)
+        m_devFuncs->vkDestroyShaderModule(dev, fragShaderModule, nullptr);
+}
+
+void TriangleRenderer::initSwapChainResources()
+{
+    qDebug("initSwapChainResources");
+
+    // Projection matrix
+    m_proj = m_window->clipCorrectionMatrix(); // adjust for Vulkan-OpenGL clip space differences
+    const QSize sz = m_window->swapChainImageSize();
+    m_proj.perspective(45.0f, sz.width() / (float) sz.height(), 0.01f, 100.0f);
+    m_proj.translate(0, 0, -4);
+}
+
+void TriangleRenderer::releaseSwapChainResources()
+{
+    qDebug("releaseSwapChainResources");
+}
+
+void TriangleRenderer::releaseResources()
+{
+    qDebug("releaseResources");
+
+    VkDevice dev = m_window->device();
+
+    if (m_pipeline) {
+        m_devFuncs->vkDestroyPipeline(dev, m_pipeline, nullptr);
+        m_pipeline = VK_NULL_HANDLE;
+    }
+
+    if (m_pipelineLayout) {
+        m_devFuncs->vkDestroyPipelineLayout(dev, m_pipelineLayout, nullptr);
+        m_pipelineLayout = VK_NULL_HANDLE;
+    }
+
+    if (m_pipelineCache) {
+        m_devFuncs->vkDestroyPipelineCache(dev, m_pipelineCache, nullptr);
+        m_pipelineCache = VK_NULL_HANDLE;
+    }
+
+    if (m_descSetLayout) {
+        m_devFuncs->vkDestroyDescriptorSetLayout(dev, m_descSetLayout, nullptr);
+        m_descSetLayout = VK_NULL_HANDLE;
+    }
+
+    if (m_descPool) {
+        m_devFuncs->vkDestroyDescriptorPool(dev, m_descPool, nullptr);
+        m_descPool = VK_NULL_HANDLE;
+    }
+
+    if (m_buf) {
+        m_devFuncs->vkDestroyBuffer(dev, m_buf, nullptr);
+        m_buf = VK_NULL_HANDLE;
+    }
+
+    if (m_bufMem) {
+        m_devFuncs->vkFreeMemory(dev, m_bufMem, nullptr);
+        m_bufMem = VK_NULL_HANDLE;
+    }
+}
+
+void TriangleRenderer::startNextFrame()
+{
+    VkDevice dev = m_window->device();
+    VkCommandBuffer cb = m_window->currentCommandBuffer();
+    const QSize sz = m_window->swapChainImageSize();
+
+    VkClearColorValue clearColor = {{ 0, 0, 0, 1 }};
+    VkClearDepthStencilValue clearDS = { 1, 0 };
+    VkClearValue clearValues[3];
+    memset(clearValues, 0, sizeof(clearValues));
+    clearValues[0].color = clearValues[2].color = clearColor;
+    clearValues[1].depthStencil = clearDS;
+
+    VkRenderPassBeginInfo rpBeginInfo;
+    memset(&rpBeginInfo, 0, sizeof(rpBeginInfo));
+    rpBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+    rpBeginInfo.renderPass = m_window->defaultRenderPass();
+    rpBeginInfo.framebuffer = m_window->currentFramebuffer();
+    rpBeginInfo.renderArea.extent.width = sz.width();
+    rpBeginInfo.renderArea.extent.height = sz.height();
+    rpBeginInfo.clearValueCount = m_window->sampleCountFlagBits() > VK_SAMPLE_COUNT_1_BIT ? 3 : 2;
+    rpBeginInfo.pClearValues = clearValues;
+    VkCommandBuffer cmdBuf = m_window->currentCommandBuffer();
+    m_devFuncs->vkCmdBeginRenderPass(cmdBuf, &rpBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
+
+    quint8 *p;
+    VkResult err = m_devFuncs->vkMapMemory(dev, m_bufMem, m_uniformBufInfo[m_window->currentFrame()].offset,
+            UNIFORM_DATA_SIZE, 0, reinterpret_cast<void **>(&p));
+    if (err != VK_SUCCESS)
+        qFatal("Failed to map memory: %d", err);
+    QMatrix4x4 m = m_proj;
+    m.rotate(m_rotation, 0, 1, 0);
+    memcpy(p, m.constData(), 16 * sizeof(float));
+    m_devFuncs->vkUnmapMemory(dev, m_bufMem);
+
+    // Not exactly a real animation system, just advance on every frame for now.
+    m_rotation += 1.0f;
+
+    m_devFuncs->vkCmdBindPipeline(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipeline);
+    m_devFuncs->vkCmdBindDescriptorSets(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipelineLayout, 0, 1,
+                               &m_descSet[m_window->currentFrame()], 0, nullptr);
+    VkDeviceSize vbOffset = 0;
+    m_devFuncs->vkCmdBindVertexBuffers(cb, 0, 1, &m_buf, &vbOffset);
+
+    VkViewport viewport;
+    viewport.x = viewport.y = 0;
+    viewport.width = sz.width();
+    viewport.height = sz.height();
+    viewport.minDepth = 0;
+    viewport.maxDepth = 1;
+    m_devFuncs->vkCmdSetViewport(cb, 0, 1, &viewport);
+
+    VkRect2D scissor;
+    scissor.offset.x = scissor.offset.y = 0;
+    scissor.extent.width = viewport.width;
+    scissor.extent.height = viewport.height;
+    m_devFuncs->vkCmdSetScissor(cb, 0, 1, &scissor);
+
+    m_devFuncs->vkCmdDraw(cb, 3, 1, 0, 0);
+
+    m_devFuncs->vkCmdEndRenderPass(cmdBuf);
+
+    m_window->frameReady();
+    m_window->requestUpdate(); // render continuously, throttled by the presentation rate
+}

examples/vulkan/shared/trianglerenderer.h

@@ -0,0 +1,43 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef TRIANGLERENDERER_H
+#define TRIANGLERENDERER_H
+
+#include <QVulkanWindow>
+
+class TriangleRenderer : public QVulkanWindowRenderer
+{
+public:
+    TriangleRenderer(QVulkanWindow *w, bool msaa = false);
+
+    void initResources() override;
+    void initSwapChainResources() override;
+    void releaseSwapChainResources() override;
+    void releaseResources() override;
+
+    void startNextFrame() override;
+
+protected:
+    VkShaderModule createShader(const QString &name);
+
+    QVulkanWindow *m_window;
+    QVulkanDeviceFunctions *m_devFuncs;
+
+    VkDeviceMemory m_bufMem = VK_NULL_HANDLE;
+    VkBuffer m_buf = VK_NULL_HANDLE;
+    VkDescriptorBufferInfo m_uniformBufInfo[QVulkanWindow::MAX_CONCURRENT_FRAME_COUNT];
+
+    VkDescriptorPool m_descPool = VK_NULL_HANDLE;
+    VkDescriptorSetLayout m_descSetLayout = VK_NULL_HANDLE;
+    VkDescriptorSet m_descSet[QVulkanWindow::MAX_CONCURRENT_FRAME_COUNT];
+
+    VkPipelineCache m_pipelineCache = VK_NULL_HANDLE;
+    VkPipelineLayout m_pipelineLayout = VK_NULL_HANDLE;
+    VkPipeline m_pipeline = VK_NULL_HANDLE;
+
+    QMatrix4x4 m_proj;
+    float m_rotation = 0.0f;
+};
+
+#endif // TRIANGLERENDERER_H

examples/vulkan/vulkan.pro

@@ -0,0 +1,8 @@
+TEMPLATE = subdirs
+
+SUBDIRS = hellovulkantriangle
+
+qtHaveModule(widgets) {
+    SUBDIRS += hellovulkanwidget
+    qtHaveModule(concurrent): SUBDIRS += hellovulkancubes
+}