Add the Vulkan cube example

Features a little bit more than a cube, though.

Change-Id: I636d4875ba9ccf722ed3caab97f14570be785748
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

31 files changed, 5703 insertions, 1 deletions

diff --git a/examples/vulkan/doc/images/hellovulkancubes.png b/examples/vulkan/doc/images/hellovulkancubes.png
new file mode 100644
index 0000000000..c3d819c047
--- /dev/null
+++ b/examples/vulkan/doc/images/hellovulkancubes.png
diff --git a/examples/vulkan/doc/src/hellovulkancubes.qdoc b/examples/vulkan/doc/src/hellovulkancubes.qdoc
new file mode 100644
index 0000000000..934d2015a1
--- /dev/null
+++ b/examples/vulkan/doc/src/hellovulkancubes.qdoc
@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \example hellovulkancubes
+    \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
+*/
diff --git a/examples/vulkan/hellovulkancubes/camera.cpp b/examples/vulkan/hellovulkancubes/camera.cpp
new file mode 100644
index 0000000000..64dee03154
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/camera.cpp
@@ -0,0 +1,112 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 "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;
+}
diff --git a/examples/vulkan/hellovulkancubes/camera.h b/examples/vulkan/hellovulkancubes/camera.h
new file mode 100644
index 0000000000..c5c579f066
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/camera.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
diff --git a/examples/vulkan/hellovulkancubes/color.frag b/examples/vulkan/hellovulkancubes/color.frag
new file mode 100644
index 0000000000..3b04955963
--- /dev/null
+++ b/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);
+}
diff --git a/examples/vulkan/hellovulkancubes/color.vert b/examples/vulkan/hellovulkancubes/color.vert
new file mode 100644
index 0000000000..19bf815819
--- /dev/null
+++ b/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;
+}
diff --git a/examples/vulkan/hellovulkancubes/color_frag.spv b/examples/vulkan/hellovulkancubes/color_frag.spv
new file mode 100644
index 0000000000..bd72984ffe
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/color_frag.spv
diff --git a/examples/vulkan/hellovulkancubes/color_phong.frag b/examples/vulkan/hellovulkancubes/color_phong.frag
new file mode 100644
index 0000000000..8b0c715f3b
--- /dev/null
+++ b/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);
+}
diff --git a/examples/vulkan/hellovulkancubes/color_phong.vert b/examples/vulkan/hellovulkancubes/color_phong.vert
new file mode 100644
index 0000000000..a1d1552685
--- /dev/null
+++ b/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;
+}
diff --git a/examples/vulkan/hellovulkancubes/color_phong_frag.spv b/examples/vulkan/hellovulkancubes/color_phong_frag.spv
new file mode 100644
index 0000000000..a1a413533b
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/color_phong_frag.spv
diff --git a/examples/vulkan/hellovulkancubes/color_phong_vert.spv b/examples/vulkan/hellovulkancubes/color_phong_vert.spv
new file mode 100644
index 0000000000..3ede21e007
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/color_phong_vert.spv
diff --git a/examples/vulkan/hellovulkancubes/color_vert.spv b/examples/vulkan/hellovulkancubes/color_vert.spv
new file mode 100644
index 0000000000..3f708b7d07
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/color_vert.spv
diff --git a/examples/vulkan/hellovulkancubes/hellovulkancubes.pro b/examples/vulkan/hellovulkancubes/hellovulkancubes.pro
new file mode 100644
index 0000000000..f9a9c3cff1
--- /dev/null
+++ b/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
diff --git a/examples/vulkan/hellovulkancubes/hellovulkancubes.qrc b/examples/vulkan/hellovulkancubes/hellovulkancubes.qrc
new file mode 100644
index 0000000000..7b085e1875
--- /dev/null
+++ b/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>
diff --git a/examples/vulkan/hellovulkancubes/main.cpp b/examples/vulkan/hellovulkancubes/main.cpp
new file mode 100644
index 0000000000..4ec4d48645
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/main.cpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 <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"));
+
+#ifndef Q_OS_ANDROID
+        inst.setLayers(QByteArrayList() << "VK_LAYER_LUNARG_standard_validation");
+#else
+        inst.setLayers(QByteArrayList()
+                       << "VK_LAYER_GOOGLE_threading"
+                       << "VK_LAYER_LUNARG_parameter_validation"
+                       << "VK_LAYER_LUNARG_object_tracker"
+                       << "VK_LAYER_LUNARG_core_validation"
+                       << "VK_LAYER_LUNARG_image"
+                       << "VK_LAYER_LUNARG_swapchain"
+                       << "VK_LAYER_GOOGLE_unique_objects");
+#endif
+    }
+
+    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();
+}
diff --git a/examples/vulkan/hellovulkancubes/mainwindow.cpp b/examples/vulkan/hellovulkancubes/mainwindow.cpp
new file mode 100644
index 0000000000..2be7d237af
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/mainwindow.cpp
@@ -0,0 +1,117 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 "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;
+}
diff --git a/examples/vulkan/hellovulkancubes/mainwindow.h b/examples/vulkan/hellovulkancubes/mainwindow.h
new file mode 100644
index 0000000000..4109709959
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/mainwindow.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
diff --git a/examples/vulkan/hellovulkancubes/mesh.cpp b/examples/vulkan/hellovulkancubes/mesh.cpp
new file mode 100644
index 0000000000..fcc45bfd57
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/mesh.cpp
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 "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;
+}
diff --git a/examples/vulkan/hellovulkancubes/mesh.h b/examples/vulkan/hellovulkancubes/mesh.h
new file mode 100644
index 0000000000..cb6ee9c830
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/mesh.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
diff --git a/examples/vulkan/hellovulkancubes/renderer.cpp b/examples/vulkan/hellovulkancubes/renderer.cpp
new file mode 100644
index 0000000000..96ae6020a7
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/renderer.cpp
@@ -0,0 +1,1048 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 "renderer.h"
+#include <QVulkanFunctions>
+#include <QtConcurrentRun>
+#include <QTime>
+
+static float quadVert[] = {
+    -1, -1, 0,
+    -1,  1, 0,
+     1, -1, 0,
+     1,  1, 0
+};
+
+#define DBG Q_UNLIKELY(m_window->isDebugEnabled())
+
+const int MAX_INSTANCES = 16384;
+const VkDeviceSize PER_INSTANCE_DATA_SIZE = 6 * sizeof(float); // instTranslate, instDiffuseAdjust
+
+static inline VkDeviceSize aligned(VkDeviceSize v, VkDeviceSize byteAlign)
+{
+    return (v + byteAlign - 1) & ~(byteAlign - 1);
+}
+
+Renderer::Renderer(VulkanWindow *w, int initialCount)
+    : m_window(w),
+      // Have the light positioned just behind the default camera position, looking forward.
+      m_lightPos(0.0f, 0.0f, 25.0f),
+      m_cam(QVector3D(0.0f, 0.0f, 20.0f)), // starting camera position
+      m_instCount(initialCount)
+{
+    qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
+
+    m_floorModel.translate(0, -5, 0);
+    m_floorModel.rotate(-90, 1, 0, 0);
+    m_floorModel.scale(20, 100, 1);
+
+    m_blockMesh.load(QStringLiteral(":/block.buf"));
+    m_logoMesh.load(QStringLiteral(":/qt_logo.buf"));
+
+    QObject::connect(&m_frameWatcher, &QFutureWatcherBase::finished, [this] {
+        if (m_framePending) {
+            m_framePending = false;
+            m_window->frameReady();
+            m_window->requestUpdate();
+        }
+    });
+}
+
+void Renderer::preInitResources()
+{
+    QSet<int> sampleCounts = m_window->supportedSampleCounts();
+    if (DBG)
+        qDebug() << "Supported sample counts:" << sampleCounts;
+    if (sampleCounts.contains(4)) {
+        if (DBG)
+            qDebug("Requesting 4x MSAA");
+        m_window->setSampleCount(4);
+    }
+}
+
+void Renderer::initResources()
+{
+    if (DBG)
+        qDebug("Renderer init");
+
+    m_animating = true;
+    m_framePending = false;
+
+    QVulkanInstance *inst = m_window->vulkanInstance();
+    VkDevice dev = m_window->device();
+    const VkPhysicalDeviceLimits *pdevLimits = &m_window->physicalDeviceProperties()->limits;
+    const VkDeviceSize uniAlign = pdevLimits->minUniformBufferOffsetAlignment;
+
+    m_devFuncs = inst->deviceFunctions(dev);
+
+    // Note the std140 packing rules. A vec3 still has an alignment of 16,
+    // while a mat3 is like 3 * vec3.
+    m_itemMaterial.vertUniSize = aligned(2 * 64 + 48, uniAlign); // see color_phong.vert
+    m_itemMaterial.fragUniSize = aligned(6 * 16 + 12 + 2 * 4, uniAlign); // see color_phong.frag
+
+    if (!m_itemMaterial.vs.isValid())
+        m_itemMaterial.vs.load(inst, dev, QStringLiteral(":/color_phong_vert.spv"));
+    if (!m_itemMaterial.fs.isValid())
+        m_itemMaterial.fs.load(inst, dev, QStringLiteral(":/color_phong_frag.spv"));
+
+    if (!m_floorMaterial.vs.isValid())
+        m_floorMaterial.vs.load(inst, dev, QStringLiteral(":/color_vert.spv"));
+    if (!m_floorMaterial.fs.isValid())
+        m_floorMaterial.fs.load(inst, dev, QStringLiteral(":/color_frag.spv"));
+
+    m_pipelinesFuture = QtConcurrent::run(this, &Renderer::createPipelines);
+}
+
+void Renderer::createPipelines()
+{
+    VkDevice dev = m_window->device();
+
+    VkPipelineCacheCreateInfo pipelineCacheInfo;
+    memset(&pipelineCacheInfo, 0, sizeof(pipelineCacheInfo));
+    pipelineCacheInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
+    VkResult err = m_devFuncs->vkCreatePipelineCache(dev, &pipelineCacheInfo, nullptr, &m_pipelineCache);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create pipeline cache: %d", err);
+
+    createItemPipeline();
+    createFloorPipeline();
+}
+
+void Renderer::createItemPipeline()
+{
+    VkDevice dev = m_window->device();
+
+    // Vertex layout.
+    VkVertexInputBindingDescription vertexBindingDesc[] = {
+        {
+            0, // binding
+            8 * sizeof(float),
+            VK_VERTEX_INPUT_RATE_VERTEX
+        },
+        {
+            1,
+            6 * sizeof(float),
+            VK_VERTEX_INPUT_RATE_INSTANCE
+        }
+    };
+    VkVertexInputAttributeDescription vertexAttrDesc[] = {
+        { // position
+            0, // location
+            0, // binding
+            VK_FORMAT_R32G32B32_SFLOAT,
+            0 // offset
+        },
+        { // normal
+            1,
+            0,
+            VK_FORMAT_R32G32B32_SFLOAT,
+            5 * sizeof(float)
+        },
+        { // instTranslate
+            2,
+            1,
+            VK_FORMAT_R32G32B32_SFLOAT,
+            0
+        },
+        { // instDiffuseAdjust
+            3,
+            1,
+            VK_FORMAT_R32G32B32_SFLOAT,
+            3 * sizeof(float)
+        }
+    };
+
+    VkPipelineVertexInputStateCreateInfo vertexInputInfo;
+    vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+    vertexInputInfo.pNext = nullptr;
+    vertexInputInfo.flags = 0;
+    vertexInputInfo.vertexBindingDescriptionCount = sizeof(vertexBindingDesc) / sizeof(vertexBindingDesc[0]);
+    vertexInputInfo.pVertexBindingDescriptions = vertexBindingDesc;
+    vertexInputInfo.vertexAttributeDescriptionCount = sizeof(vertexAttrDesc) / sizeof(vertexAttrDesc[0]);
+    vertexInputInfo.pVertexAttributeDescriptions = vertexAttrDesc;
+
+    // Descriptor set layout.
+    VkDescriptorPoolSize descPoolSizes[] = {
+        { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 2 }
+    };
+    VkDescriptorPoolCreateInfo descPoolInfo;
+    memset(&descPoolInfo, 0, sizeof(descPoolInfo));
+    descPoolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+    descPoolInfo.maxSets = 1; // a single set is enough due to the dynamic uniform buffer
+    descPoolInfo.poolSizeCount = sizeof(descPoolSizes) / sizeof(descPoolSizes[0]);
+    descPoolInfo.pPoolSizes = descPoolSizes;
+    VkResult err = m_devFuncs->vkCreateDescriptorPool(dev, &descPoolInfo, nullptr, &m_itemMaterial.descPool);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create descriptor pool: %d", err);
+
+    VkDescriptorSetLayoutBinding layoutBindings[] =
+    {
+        {
+            0, // binding
+            VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC,
+            1, // descriptorCount
+            VK_SHADER_STAGE_VERTEX_BIT,
+            nullptr
+        },
+        {
+            1,
+            VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC,
+            1,
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            nullptr
+        }
+    };
+    VkDescriptorSetLayoutCreateInfo descLayoutInfo = {
+        VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
+        nullptr,
+        0,
+        sizeof(layoutBindings) / sizeof(layoutBindings[0]),
+        layoutBindings
+    };
+    err = m_devFuncs->vkCreateDescriptorSetLayout(dev, &descLayoutInfo, nullptr, &m_itemMaterial.descSetLayout);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create descriptor set layout: %d", err);
+
+    VkDescriptorSetAllocateInfo descSetAllocInfo = {
+        VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
+        nullptr,
+        m_itemMaterial.descPool,
+        1,
+        &m_itemMaterial.descSetLayout
+    };
+    err = m_devFuncs->vkAllocateDescriptorSets(dev, &descSetAllocInfo, &m_itemMaterial.descSet);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to allocate descriptor set: %d", err);
+
+    // Graphics pipeline.
+    VkPipelineLayoutCreateInfo pipelineLayoutInfo;
+    memset(&pipelineLayoutInfo, 0, sizeof(pipelineLayoutInfo));
+    pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+    pipelineLayoutInfo.setLayoutCount = 1;
+    pipelineLayoutInfo.pSetLayouts = &m_itemMaterial.descSetLayout;
+
+    err = m_devFuncs->vkCreatePipelineLayout(dev, &pipelineLayoutInfo, nullptr, &m_itemMaterial.pipelineLayout);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create pipeline layout: %d", err);
+
+    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,
+            m_itemMaterial.vs.data()->shaderModule,
+            "main",
+            nullptr
+        },
+        {
+            VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+            nullptr,
+            0,
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            m_itemMaterial.fs.data()->shaderModule,
+            "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;
+
+    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_BACK_BIT;
+    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;
+    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;
+    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_itemMaterial.pipelineLayout;
+    pipelineInfo.renderPass = m_window->defaultRenderPass();
+
+    err = m_devFuncs->vkCreateGraphicsPipelines(dev, m_pipelineCache, 1, &pipelineInfo, nullptr, &m_itemMaterial.pipeline);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create graphics pipeline: %d", err);
+}
+
+void Renderer::createFloorPipeline()
+{
+    VkDevice dev = m_window->device();
+
+    // Vertex layout.
+    VkVertexInputBindingDescription vertexBindingDesc = {
+        0, // binding
+        3 * sizeof(float),
+        VK_VERTEX_INPUT_RATE_VERTEX
+    };
+    VkVertexInputAttributeDescription vertexAttrDesc[] = {
+        { // position
+            0, // location
+            0, // binding
+            VK_FORMAT_R32G32B32_SFLOAT,
+            0 // offset
+        },
+    };
+
+    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 = sizeof(vertexAttrDesc) / sizeof(vertexAttrDesc[0]);
+    vertexInputInfo.pVertexAttributeDescriptions = vertexAttrDesc;
+
+    // Do not bother with uniform buffers and descriptors, all the data fits
+    // into the spec mandated minimum of 128 bytes for push constants.
+    VkPushConstantRange pcr[] = {
+        // mvp
+        {
+            VK_SHADER_STAGE_VERTEX_BIT,
+            0,
+            64
+        },
+        // color
+        {
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            64,
+            12
+        }
+    };
+
+    VkPipelineLayoutCreateInfo pipelineLayoutInfo;
+    memset(&pipelineLayoutInfo, 0, sizeof(pipelineLayoutInfo));
+    pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+    pipelineLayoutInfo.pushConstantRangeCount = sizeof(pcr) / sizeof(pcr[0]);
+    pipelineLayoutInfo.pPushConstantRanges = pcr;
+
+    VkResult err = m_devFuncs->vkCreatePipelineLayout(dev, &pipelineLayoutInfo, nullptr, &m_floorMaterial.pipelineLayout);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create pipeline layout: %d", err);
+
+    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,
+            m_floorMaterial.vs.data()->shaderModule,
+            "main",
+            nullptr
+        },
+        {
+            VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+            nullptr,
+            0,
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            m_floorMaterial.fs.data()->shaderModule,
+            "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_STRIP;
+    pipelineInfo.pInputAssemblyState = &ia;
+
+    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_BACK_BIT;
+    rs.frontFace = VK_FRONT_FACE_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;
+    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;
+    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_floorMaterial.pipelineLayout;
+    pipelineInfo.renderPass = m_window->defaultRenderPass();
+
+    err = m_devFuncs->vkCreateGraphicsPipelines(dev, m_pipelineCache, 1, &pipelineInfo, nullptr, &m_floorMaterial.pipeline);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create graphics pipeline: %d", err);
+}
+
+void Renderer::initSwapChainResources()
+{
+    m_proj = *m_window->clipCorrectionMatrix();
+    const QSize sz = m_window->swapChainImageSize();
+    m_proj.perspective(45.0f, sz.width() / (float) sz.height(), 0.01f, 1000.0f);
+    markViewProjDirty();
+}
+
+void Renderer::releaseSwapChainResources()
+{
+    // It is important to finish the pending frame right here since this is the
+    // last opportunity to act with all resources intact.
+    m_frameWatcher.waitForFinished();
+    // Cannot count on the finished() signal being emitted before returning
+    // from here.
+    if (m_framePending) {
+        m_framePending = false;
+        m_window->frameReady();
+    }
+}
+
+void Renderer::releaseResources()
+{
+    if (DBG)
+        qDebug("Renderer release");
+
+    m_pipelinesFuture.waitForFinished();
+
+    VkDevice dev = m_window->device();
+
+    if (m_itemMaterial.descSetLayout) {
+        m_devFuncs->vkDestroyDescriptorSetLayout(dev, m_itemMaterial.descSetLayout, nullptr);
+        m_itemMaterial.descSetLayout = VK_NULL_HANDLE;
+    }
+
+    if (m_itemMaterial.descPool) {
+        m_devFuncs->vkDestroyDescriptorPool(dev, m_itemMaterial.descPool, nullptr);
+        m_itemMaterial.descPool = VK_NULL_HANDLE;
+    }
+
+    if (m_itemMaterial.pipeline) {
+        m_devFuncs->vkDestroyPipeline(dev, m_itemMaterial.pipeline, nullptr);
+        m_itemMaterial.pipeline = VK_NULL_HANDLE;
+    }
+
+    if (m_itemMaterial.pipelineLayout) {
+        m_devFuncs->vkDestroyPipelineLayout(dev, m_itemMaterial.pipelineLayout, nullptr);
+        m_itemMaterial.pipelineLayout = VK_NULL_HANDLE;
+    }
+
+    if (m_floorMaterial.pipeline) {
+        m_devFuncs->vkDestroyPipeline(dev, m_floorMaterial.pipeline, nullptr);
+        m_floorMaterial.pipeline = VK_NULL_HANDLE;
+    }
+
+    if (m_floorMaterial.pipelineLayout) {
+        m_devFuncs->vkDestroyPipelineLayout(dev, m_floorMaterial.pipelineLayout, nullptr);
+        m_floorMaterial.pipelineLayout = VK_NULL_HANDLE;
+    }
+
+    if (m_pipelineCache) {
+        m_devFuncs->vkDestroyPipelineCache(dev, m_pipelineCache, nullptr);
+        m_pipelineCache = VK_NULL_HANDLE;
+    }
+
+    if (m_blockVertexBuf) {
+        m_devFuncs->vkDestroyBuffer(dev, m_blockVertexBuf, nullptr);
+        m_blockVertexBuf = VK_NULL_HANDLE;
+    }
+
+    if (m_logoVertexBuf) {
+        m_devFuncs->vkDestroyBuffer(dev, m_logoVertexBuf, nullptr);
+        m_logoVertexBuf = VK_NULL_HANDLE;
+    }
+
+    if (m_floorVertexBuf) {
+        m_devFuncs->vkDestroyBuffer(dev, m_floorVertexBuf, nullptr);
+        m_floorVertexBuf = VK_NULL_HANDLE;
+    }
+
+    if (m_uniBuf) {
+        m_devFuncs->vkDestroyBuffer(dev, m_uniBuf, nullptr);
+        m_uniBuf = VK_NULL_HANDLE;
+    }
+
+    if (m_bufMem) {
+        m_devFuncs->vkFreeMemory(dev, m_bufMem, nullptr);
+        m_bufMem = VK_NULL_HANDLE;
+    }
+
+    if (m_instBuf) {
+        m_devFuncs->vkDestroyBuffer(dev, m_instBuf, nullptr);
+        m_instBuf = VK_NULL_HANDLE;
+    }
+
+    if (m_instBufMem) {
+        m_devFuncs->vkFreeMemory(dev, m_instBufMem, nullptr);
+        m_instBufMem = VK_NULL_HANDLE;
+    }
+
+    if (m_itemMaterial.vs.isValid()) {
+        m_devFuncs->vkDestroyShaderModule(dev, m_itemMaterial.vs.data()->shaderModule, nullptr);
+        m_itemMaterial.vs.reset();
+    }
+    if (m_itemMaterial.fs.isValid()) {
+        m_devFuncs->vkDestroyShaderModule(dev, m_itemMaterial.fs.data()->shaderModule, nullptr);
+        m_itemMaterial.fs.reset();
+    }
+
+    if (m_floorMaterial.vs.isValid()) {
+        m_devFuncs->vkDestroyShaderModule(dev, m_floorMaterial.vs.data()->shaderModule, nullptr);
+        m_floorMaterial.vs.reset();
+    }
+    if (m_floorMaterial.fs.isValid()) {
+        m_devFuncs->vkDestroyShaderModule(dev, m_floorMaterial.fs.data()->shaderModule, nullptr);
+        m_floorMaterial.fs.reset();
+    }
+}
+
+void Renderer::ensureBuffers()
+{
+    if (m_blockVertexBuf)
+        return;
+
+    VkDevice dev = m_window->device();
+    const int concurrentFrameCount = m_window->concurrentFrameCount();
+
+    // Vertex buffer for the block.
+    VkBufferCreateInfo bufInfo;
+    memset(&bufInfo, 0, sizeof(bufInfo));
+    bufInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+    const int blockMeshByteCount = m_blockMesh.data()->vertexCount * 8 * sizeof(float);
+    bufInfo.size = blockMeshByteCount;
+    bufInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
+    VkResult err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_blockVertexBuf);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create vertex buffer: %d", err);
+
+    VkMemoryRequirements blockVertMemReq;
+    m_devFuncs->vkGetBufferMemoryRequirements(dev, m_blockVertexBuf, &blockVertMemReq);
+
+    // Vertex buffer for the logo.
+    const int logoMeshByteCount = m_logoMesh.data()->vertexCount * 8 * sizeof(float);
+    bufInfo.size = logoMeshByteCount;
+    bufInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
+    err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_logoVertexBuf);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create vertex buffer: %d", err);
+
+    VkMemoryRequirements logoVertMemReq;
+    m_devFuncs->vkGetBufferMemoryRequirements(dev, m_logoVertexBuf, &logoVertMemReq);
+
+    // Vertex buffer for the floor.
+    bufInfo.size = sizeof(quadVert);
+    err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_floorVertexBuf);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create vertex buffer: %d", err);
+
+    VkMemoryRequirements floorVertMemReq;
+    m_devFuncs->vkGetBufferMemoryRequirements(dev, m_floorVertexBuf, &floorVertMemReq);
+
+    // Uniform buffer. Instead of using multiple descriptor sets, we take a
+    // different approach: have a single dynamic uniform buffer and specify the
+    // active-frame-specific offset at the time of binding the descriptor set.
+    bufInfo.size = (m_itemMaterial.vertUniSize + m_itemMaterial.fragUniSize) * concurrentFrameCount;
+    bufInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
+    err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_uniBuf);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to create uniform buffer: %d", err);
+
+    VkMemoryRequirements uniMemReq;
+    m_devFuncs->vkGetBufferMemoryRequirements(dev, m_uniBuf, &uniMemReq);
+
+    // Allocate memory for everything at once.
+    VkDeviceSize logoVertStartOffset = aligned(0 + blockVertMemReq.size, logoVertMemReq.alignment);
+    VkDeviceSize floorVertStartOffset = aligned(logoVertStartOffset + logoVertMemReq.size, floorVertMemReq.alignment);
+    m_itemMaterial.uniMemStartOffset = aligned(floorVertStartOffset + floorVertMemReq.size, uniMemReq.alignment);
+    VkMemoryAllocateInfo memAllocInfo = {
+        VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
+        nullptr,
+        m_itemMaterial.uniMemStartOffset + uniMemReq.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_blockVertexBuf, m_bufMem, 0);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to bind vertex buffer memory: %d", err);
+    err = m_devFuncs->vkBindBufferMemory(dev, m_logoVertexBuf, m_bufMem, logoVertStartOffset);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to bind vertex buffer memory: %d", err);
+    err = m_devFuncs->vkBindBufferMemory(dev, m_floorVertexBuf, m_bufMem, floorVertStartOffset);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to bind vertex buffer memory: %d", err);
+    err = m_devFuncs->vkBindBufferMemory(dev, m_uniBuf, m_bufMem, m_itemMaterial.uniMemStartOffset);
+    if (err != VK_SUCCESS)
+        qFatal("Failed to bind uniform buffer memory: %d", err);
+
+    // Copy vertex data.
+    quint8 *p;
+    err = m_devFuncs->vkMapMemory(dev, m_bufMem, 0, m_itemMaterial.uniMemStartOffset, 0, reinterpret_cast<void **>(&p));
+    if (err != VK_SUCCESS)
+        qFatal("Failed to map memory: %d", err);
+    memcpy(p, m_blockMesh.data()->geom.constData(), blockMeshByteCount);
+    memcpy(p + logoVertStartOffset, m_logoMesh.data()->geom.constData(), logoMeshByteCount);
+    memcpy(p + floorVertStartOffset, quadVert, sizeof(quadVert));
+    m_devFuncs->vkUnmapMemory(dev, m_bufMem);
+
+    // Write descriptors for the uniform buffers in the vertex and fragment shaders.
+    VkDescriptorBufferInfo vertUni = { m_uniBuf, 0, m_itemMaterial.vertUniSize };
+    VkDescriptorBufferInfo fragUni = { m_uniBuf, m_itemMaterial.vertUniSize, m_itemMaterial.fragUniSize };
+
+    VkWriteDescriptorSet descWrite[2];
+    memset(descWrite, 0, sizeof(descWrite));
+    descWrite[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+    descWrite[0].dstSet = m_itemMaterial.descSet;
+    descWrite[0].dstBinding = 0;
+    descWrite[0].descriptorCount = 1;
+    descWrite[0].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC;
+    descWrite[0].pBufferInfo = &vertUni;
+
+    descWrite[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+    descWrite[1].dstSet = m_itemMaterial.descSet;
+    descWrite[1].dstBinding = 1;
+    descWrite[1].descriptorCount = 1;
+    descWrite[1].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC;
+    descWrite[1].pBufferInfo = &fragUni;
+
+    m_devFuncs->vkUpdateDescriptorSets(dev, 2, descWrite, 0, nullptr);
+}
+
+void Renderer::ensureInstanceBuffer()
+{
+    if (m_instCount == m_preparedInstCount && m_instBuf)
+        return;
+
+    Q_ASSERT(m_instCount <= MAX_INSTANCES);
+
+    VkDevice dev = m_window->device();
+
+    // allocate only once, for the maximum instance count
+    if (!m_instBuf) {
+        VkBufferCreateInfo bufInfo;
+        memset(&bufInfo, 0, sizeof(bufInfo));
+        bufInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+        bufInfo.size = MAX_INSTANCES * PER_INSTANCE_DATA_SIZE;
+        bufInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
+
+        // Keep a copy of the data since we may lose all graphics resources on
+        // unexpose, and reinitializing to new random positions afterwards
+        // would not be nice.
+        m_instData.resize(bufInfo.size);
+
+        VkResult err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_instBuf);
+        if (err != VK_SUCCESS)
+            qFatal("Failed to create instance buffer: %d", err);
+
+        VkMemoryRequirements memReq;
+        m_devFuncs->vkGetBufferMemoryRequirements(dev, m_instBuf, &memReq);
+        if (DBG)
+            qDebug("Allocating %u bytes for instance data", uint32_t(memReq.size));
+
+        VkMemoryAllocateInfo memAllocInfo = {
+            VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
+            nullptr,
+            memReq.size,
+            m_window->hostVisibleMemoryIndex()
+        };
+        err = m_devFuncs->vkAllocateMemory(dev, &memAllocInfo, nullptr, &m_instBufMem);
+        if (err != VK_SUCCESS)
+            qFatal("Failed to allocate memory: %d", err);
+
+        err = m_devFuncs->vkBindBufferMemory(dev, m_instBuf, m_instBufMem, 0);
+        if (err != VK_SUCCESS)
+            qFatal("Failed to bind instance buffer memory: %d", err);
+    }
+
+    if (m_instCount != m_preparedInstCount) {
+        if (DBG)
+            qDebug("Preparing instances %d..%d", m_preparedInstCount, m_instCount - 1);
+        char *p = m_instData.data();
+        p += m_preparedInstCount * PER_INSTANCE_DATA_SIZE;
+        auto gen = [](float a, float b) { return float((qrand() % int(b - a + 1)) + a); };
+        for (int i = m_preparedInstCount; i < m_instCount; ++i) {
+            // Apply a random translation to each instance of the mesh.
+            float t[] = { gen(-5, 5), gen(-4, 6), gen(-30, 5) };
+            memcpy(p, t, 12);
+            // Apply a random adjustment to the diffuse color for each instance. (default is 0.7)
+            float d[] = { gen(-6, 3) / 10.0f, gen(-6, 3) / 10.0f, gen(-6, 3) / 10.0f };
+            memcpy(p + 12, d, 12);
+            p += PER_INSTANCE_DATA_SIZE;
+        }
+        m_preparedInstCount = m_instCount;
+    }
+
+    quint8 *p;
+    VkResult err = m_devFuncs->vkMapMemory(dev, m_instBufMem, 0, m_instCount * PER_INSTANCE_DATA_SIZE, 0,
+                                           reinterpret_cast<void **>(&p));
+    if (err != VK_SUCCESS)
+        qFatal("Failed to map memory: %d", err);
+    memcpy(p, m_instData.constData(), m_instData.size());
+    m_devFuncs->vkUnmapMemory(dev, m_instBufMem);
+}
+
+void Renderer::getMatrices(QMatrix4x4 *vp, QMatrix4x4 *model, QMatrix3x3 *modelNormal, QVector3D *eyePos)
+{
+    model->setToIdentity();
+    if (m_useLogo)
+        model->rotate(90, 1, 0, 0);
+    model->rotate(m_rotation, 1, 1, 0);
+
+    *modelNormal = model->normalMatrix();
+
+    QMatrix4x4 view = m_cam.viewMatrix();
+    *vp = m_proj * view;
+
+    *eyePos = view.inverted().column(3).toVector3D();
+}
+
+void Renderer::writeFragUni(quint8 *p, const QVector3D &eyePos)
+{
+    float ECCameraPosition[] = { eyePos.x(), eyePos.y(), eyePos.z() };
+    memcpy(p, ECCameraPosition, 12);
+    p += 16;
+
+    // Material
+    float ka[] = { 0.05f, 0.05f, 0.05f };
+    memcpy(p, ka, 12);
+    p += 16;
+
+    float kd[] = { 0.7f, 0.7f, 0.7f };
+    memcpy(p, kd, 12);
+    p += 16;
+
+    float ks[] = { 0.66f, 0.66f, 0.66f };
+    memcpy(p, ks, 12);
+    p += 16;
+
+    // Light parameters
+    float ECLightPosition[] = { m_lightPos.x(), m_lightPos.y(), m_lightPos.z() };
+    memcpy(p, ECLightPosition, 12);
+    p += 16;
+
+    float att[] = { 1, 0, 0 };
+    memcpy(p, att, 12);
+    p += 16;
+
+    float color[] = { 1.0f, 1.0f, 1.0f };
+    memcpy(p, color, 12);
+    p += 12; // next we have two floats which have an alignment of 4, hence 12 only
+
+    float intensity = 0.8f;
+    memcpy(p, &intensity, 4);
+    p += 4;
+
+    float specularExp = 150.0f;
+    memcpy(p, &specularExp, 4);
+    p += 4;
+}
+
+void Renderer::startNextFrame()
+{
+    // For demonstration purposes offload the command buffer generation onto a
+    // worker thread and continue with the frame submission only when it has
+    // finished.
+    Q_ASSERT(!m_framePending);
+    m_framePending = true;
+    QFuture<void> future = QtConcurrent::run(this, &Renderer::buildFrame);
+    m_frameWatcher.setFuture(future);
+}
+
+void Renderer::buildFrame()
+{
+    QMutexLocker locker(&m_guiMutex);
+
+    ensureBuffers();
+    ensureInstanceBuffer();
+    m_pipelinesFuture.waitForFinished();
+
+    VkCommandBuffer cb = m_window->currentCommandBuffer();
+    const QSize sz = m_window->swapChainImageSize();
+
+    VkClearColorValue clearColor = { 0.67f, 0.84f, 0.9f, 1.0f };
+    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);
+
+    VkViewport viewport = {
+        0, 0,
+        float(sz.width()), float(sz.height()),
+        0, 1
+    };
+    m_devFuncs->vkCmdSetViewport(cb, 0, 1, &viewport);
+
+    VkRect2D scissor = {
+        { 0, 0 },
+        { uint32_t(sz.width()), uint32_t(sz.height()) }
+    };
+    m_devFuncs->vkCmdSetScissor(cb, 0, 1, &scissor);
+
+    buildDrawCallsForFloor();
+    buildDrawCallsForItems();
+
+    m_devFuncs->vkCmdEndRenderPass(cmdBuf);
+}
+
+void Renderer::buildDrawCallsForItems()
+{
+    VkDevice dev = m_window->device();
+    VkCommandBuffer cb = m_window->currentCommandBuffer();
+
+    m_devFuncs->vkCmdBindPipeline(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_itemMaterial.pipeline);
+
+    VkDeviceSize vbOffset = 0;
+    m_devFuncs->vkCmdBindVertexBuffers(cb, 0, 1, m_useLogo ? &m_logoVertexBuf : &m_blockVertexBuf, &vbOffset);
+    m_devFuncs->vkCmdBindVertexBuffers(cb, 1, 1, &m_instBuf, &vbOffset);
+
+    // Now provide offsets so that the two dynamic buffers point to the
+    // beginning of the vertex and fragment uniform data for the current frame.
+    uint32_t frameUniOffset = m_window->currentFrame() * (m_itemMaterial.vertUniSize + m_itemMaterial.fragUniSize);
+    uint32_t frameUniOffsets[] = { frameUniOffset, frameUniOffset };
+    m_devFuncs->vkCmdBindDescriptorSets(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_itemMaterial.pipelineLayout, 0, 1,
+                                        &m_itemMaterial.descSet, 2, frameUniOffsets);
+
+    if (m_animating)
+        m_rotation += 0.5;
+
+    if (m_animating || m_vpDirty) {
+        if (m_vpDirty)
+            --m_vpDirty;
+        QMatrix4x4 vp, model;
+        QMatrix3x3 modelNormal;
+        QVector3D eyePos;
+        getMatrices(&vp, &model, &modelNormal, &eyePos);
+
+        // Map the uniform data for the current frame, ignore the geometry data at
+        // the beginning and the uniforms for other frames.
+        quint8 *p;
+        VkResult err = m_devFuncs->vkMapMemory(dev, m_bufMem,
+                                               m_itemMaterial.uniMemStartOffset + frameUniOffset,
+                                               m_itemMaterial.vertUniSize + m_itemMaterial.fragUniSize,
+                                               0, reinterpret_cast<void **>(&p));
+        if (err != VK_SUCCESS)
+            qFatal("Failed to map memory: %d", err);
+
+        // Vertex shader uniforms
+        memcpy(p, vp.constData(), 64);
+        memcpy(p + 64, model.constData(), 64);
+        const float *mnp = modelNormal.constData();
+        memcpy(p + 128, mnp, 12);
+        memcpy(p + 128 + 16, mnp + 3, 12);
+        memcpy(p + 128 + 32, mnp + 6, 12);
+
+        // Fragment shader uniforms
+        p += m_itemMaterial.vertUniSize;
+        writeFragUni(p, eyePos);
+
+        m_devFuncs->vkUnmapMemory(dev, m_bufMem);
+    }
+
+    m_devFuncs->vkCmdDraw(cb, (m_useLogo ? m_logoMesh.data() : m_blockMesh.data())->vertexCount, m_instCount, 0, 0);
+}
+
+void Renderer::buildDrawCallsForFloor()
+{
+    VkCommandBuffer cb = m_window->currentCommandBuffer();
+
+    m_devFuncs->vkCmdBindPipeline(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_floorMaterial.pipeline);
+
+    VkDeviceSize vbOffset = 0;
+    m_devFuncs->vkCmdBindVertexBuffers(cb, 0, 1, &m_floorVertexBuf, &vbOffset);
+
+    QMatrix4x4 mvp = m_proj * m_cam.viewMatrix() * m_floorModel;
+    m_devFuncs->vkCmdPushConstants(cb, m_floorMaterial.pipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, 64, mvp.constData());
+    float color[] = { 0.67f, 1.0f, 0.2f };
+    m_devFuncs->vkCmdPushConstants(cb, m_floorMaterial.pipelineLayout, VK_SHADER_STAGE_FRAGMENT_BIT, 64, 12, color);
+
+    m_devFuncs->vkCmdDraw(cb, 4, 1, 0, 0);
+}
+
+void Renderer::addNew()
+{
+    QMutexLocker locker(&m_guiMutex);
+    m_instCount = qMin(m_instCount + 16, MAX_INSTANCES);
+}
+
+void Renderer::yaw(float degrees)
+{
+    QMutexLocker locker(&m_guiMutex);
+    m_cam.yaw(degrees);
+    markViewProjDirty();
+}
+
+void Renderer::pitch(float degrees)
+{
+    QMutexLocker locker(&m_guiMutex);
+    m_cam.pitch(degrees);
+    markViewProjDirty();
+}
+
+void Renderer::walk(float amount)
+{
+    QMutexLocker locker(&m_guiMutex);
+    m_cam.walk(amount);
+    markViewProjDirty();
+}
+
+void Renderer::strafe(float amount)
+{
+    QMutexLocker locker(&m_guiMutex);
+    m_cam.strafe(amount);
+    markViewProjDirty();
+}
+
+void Renderer::setUseLogo(bool b)
+{
+    QMutexLocker locker(&m_guiMutex);
+    m_useLogo = b;
+    if (!m_animating)
+        m_window->requestUpdate();
+}
diff --git a/examples/vulkan/hellovulkancubes/renderer.h b/examples/vulkan/hellovulkancubes/renderer.h
new file mode 100644
index 0000000000..60bb48377e
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/renderer.h
@@ -0,0 +1,158 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
diff --git a/examples/vulkan/hellovulkancubes/shader.cpp b/examples/vulkan/hellovulkancubes/shader.cpp
new file mode 100644
index 0000000000..e1c01c6842
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/shader.cpp
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 "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;
+}
diff --git a/examples/vulkan/hellovulkancubes/shader.h b/examples/vulkan/hellovulkancubes/shader.h
new file mode 100644
index 0000000000..265868d2b0
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/shader.h
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
diff --git a/examples/vulkan/hellovulkancubes/vulkanwindow.cpp b/examples/vulkan/hellovulkancubes/vulkanwindow.cpp
new file mode 100644
index 0000000000..9a4eaf1901
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/vulkanwindow.cpp
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 "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->pos();
+}
+
+void VulkanWindow::mouseReleaseEvent(QMouseEvent *)
+{
+    m_pressed = false;
+}
+
+void VulkanWindow::mouseMoveEvent(QMouseEvent *e)
+{
+    if (!m_pressed)
+        return;
+
+    int dx = e->pos().x() - m_lastPos.x();
+    int dy = e->pos().y() - m_lastPos.y();
+
+    if (dy)
+        m_renderer->pitch(dy / 10.0f);
+
+    if (dx)
+        m_renderer->yaw(dx / 10.0f);
+
+    m_lastPos = e->pos();
+}
+
+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();
+}
diff --git a/examples/vulkan/hellovulkancubes/vulkanwindow.h b/examples/vulkan/hellovulkancubes/vulkanwindow.h
new file mode 100644
index 0000000000..d085c0bde7
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/vulkanwindow.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
diff --git a/examples/vulkan/shared/block.buf b/examples/vulkan/shared/block.buf
new file mode 100644
index 0000000000..28ec2620bd
--- /dev/null
+++ b/examples/vulkan/shared/block.buf
diff --git a/examples/vulkan/shared/block.txt b/examples/vulkan/shared/block.txt
new file mode 100644
index 0000000000..a6b66b83cc
--- /dev/null
+++ b/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
diff --git a/examples/vulkan/shared/objconvert.js b/examples/vulkan/shared/objconvert.js
new file mode 100644
index 0000000000..9b49e3cdac
--- /dev/null
+++ b/examples/vulkan/shared/objconvert.js
@@ -0,0 +1,241 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+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])");
+});
diff --git a/examples/vulkan/shared/qt_logo.buf b/examples/vulkan/shared/qt_logo.buf
new file mode 100644
index 0000000000..316ec41aee
--- /dev/null
+++ b/examples/vulkan/shared/qt_logo.buf
diff --git a/examples/vulkan/shared/qt_logo.txt b/examples/vulkan/shared/qt_logo.txt
new file mode 100644
index 0000000000..167b8a4caf
--- /dev/null
+++ b/examples/vulkan/shared/qt_logo.txt
@@ -0,0 +1,2912 @@
+# Blender v2.77 (sub 0) OBJ File: 'qt_logo.blend'
+# www.blender.org
+o qt_logo_qt_logo_mesh
+v 0.500000 0.030000 -0.271909
+v 0.500000 0.030000 -0.234087
+v 0.500000 0.030000 0.229669
+v 0.361282 0.030000 0.368353
+v -0.369121 0.030000 0.368353
+v -0.403885 0.030000 0.368353
+v -0.500000 0.030000 0.368353
+v -0.500000 0.030000 0.272263
+v -0.500000 0.030000 0.234440
+v -0.500000 0.030000 -0.229316
+v -0.361282 0.030000 -0.368000
+v 0.369121 0.030000 -0.368000
+v 0.403886 0.030000 -0.368000
+v 0.500000 0.030000 -0.368000
+v -0.014123 0.030000 0.177038
+v -0.008432 0.030000 0.172481
+v -0.003036 0.030000 0.167611
+v 0.002070 0.030000 0.162429
+v 0.006887 0.030000 0.156934
+v 0.011418 0.030000 0.151127
+v 0.015664 0.030000 0.145008
+v 0.019629 0.030000 0.138577
+v 0.023315 0.030000 0.131833
+v 0.026724 0.030000 0.124776
+v 0.029858 0.030000 0.117408
+v 0.032720 0.030000 0.109727
+v 0.035255 0.030000 0.101769
+v 0.037575 0.030000 0.093399
+v 0.039680 0.030000 0.084618
+v 0.041569 0.030000 0.075425
+v 0.043240 0.030000 0.065820
+v 0.044692 0.030000 0.055804
+v 0.045923 0.030000 0.045375
+v 0.046934 0.030000 0.034535
+v 0.047722 0.030000 0.023284
+v 0.048286 0.030000 0.011620
+v 0.048626 0.030000 -0.000455
+v 0.048739 0.030000 -0.012942
+v 0.048469 0.030000 -0.031775
+v 0.047658 0.030000 -0.049771
+v 0.046305 0.030000 -0.066929
+v 0.044409 0.030000 -0.083249
+v 0.041969 0.030000 -0.098732
+v 0.038983 0.030000 -0.113377
+v 0.035450 0.030000 -0.127184
+v 0.031369 0.030000 -0.140154
+v 0.026739 0.030000 -0.152286
+v 0.021559 0.030000 -0.163580
+v 0.015828 0.030000 -0.174037
+v 0.009543 0.030000 -0.183656
+v 0.002656 0.030000 -0.192551
+v -0.005054 0.030000 -0.200667
+v -0.013585 0.030000 -0.208004
+v -0.022937 0.030000 -0.214563
+v -0.033107 0.030000 -0.220347
+v -0.044095 0.030000 -0.225355
+v -0.055900 0.030000 -0.229590
+v -0.068520 0.030000 -0.233052
+v -0.081954 0.030000 -0.235742
+v -0.096201 0.030000 -0.237663
+v -0.111260 0.030000 -0.238814
+v -0.127130 0.030000 -0.239198
+v -0.143000 0.030000 -0.238808
+v -0.158061 0.030000 -0.237638
+v -0.172312 0.030000 -0.235689
+v -0.185753 0.030000 -0.232963
+v -0.198385 0.030000 -0.229461
+v -0.210208 0.030000 -0.225185
+v -0.221221 0.030000 -0.220134
+v -0.231425 0.030000 -0.214311
+v -0.240819 0.030000 -0.207716
+v -0.249404 0.030000 -0.200351
+v -0.257179 0.030000 -0.192217
+v -0.264144 0.030000 -0.183315
+v -0.270435 0.030000 -0.173618
+v -0.276186 0.030000 -0.163098
+v -0.281394 0.030000 -0.151754
+v -0.286059 0.030000 -0.139586
+v -0.290179 0.030000 -0.126595
+v -0.293754 0.030000 -0.112781
+v -0.296782 0.030000 -0.098143
+v -0.299263 0.030000 -0.082682
+v -0.301194 0.030000 -0.066397
+v -0.302575 0.030000 -0.049288
+v -0.303404 0.030000 -0.031357
+v -0.303681 0.030000 -0.012601
+v -0.303411 0.030000 0.006061
+v -0.302602 0.030000 0.023884
+v -0.301253 0.030000 0.040864
+v -0.299364 0.030000 0.056999
+v -0.296935 0.030000 0.072288
+v -0.293967 0.030000 0.086726
+v -0.290460 0.030000 0.100313
+v -0.286412 0.030000 0.113046
+v -0.281825 0.030000 0.124922
+v -0.276698 0.030000 0.135939
+v -0.271032 0.030000 0.146095
+v -0.264826 0.030000 0.155387
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diff --git a/examples/vulkan/vulkan.pro b/examples/vulkan/vulkan.pro
index ef5496bcd4..920762cb9e 100644
--- a/examples/vulkan/vulkan.pro
+++ b/examples/vulkan/vulkan.pro
@@ -4,4 +4,7 @@ SUBDIRS = hellovulkanwindow \
           hellovulkantriangle \
           hellovulkantexture
 
-qtHaveModule(widgets): SUBDIRS += hellovulkanwidget
+qtHaveModule(widgets) {
+    SUBDIRS += hellovulkanwidget
+    qtHaveModule(concurrent): SUBDIRS += hellovulkancubes
+}