Add QD3D12Window, a HLSL qmake rule and 8 examples

Change-Id: Ida7852af10e0236a5d80e95a0876fff6276b410c
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

68 files changed, 6682 insertions, 0 deletions

diff --git a/.qmake.conf b/.qmake.conf
new file mode 100644
index 0000000..71766f0
--- /dev/null
+++ b/.qmake.conf
@@ -0,0 +1,3 @@
+load(qt_build_config)
+MODULE_VERSION = 5.6.0
+CMAKE_MODULE_TESTS=-
diff --git a/LICENSE.GPL b/LICENSE.GPL
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/LICENSE.GPL
@@ -0,0 +1,674 @@
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+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/LICENSE.LGPLv3 b/LICENSE.LGPLv3
new file mode 100644
index 0000000..8fbb743
--- /dev/null
+++ b/LICENSE.LGPLv3
@@ -0,0 +1,173 @@
+            GNU LESSER GENERAL PUBLIC LICENSE
+
+ The Qt Toolkit is Copyright (C) 2015 The Qt Company Ltd.
+ Contact: http://www.qt.io/licensing/
+
+ You may use, distribute and copy the Qt GUI Toolkit under the terms of
+ GNU Lesser General Public License version 3, which is displayed below.
+
+-------------------------------------------------------------------------
+
+            GNU LESSER GENERAL PUBLIC LICENSE
+                Version 3, 29 June 2007
+
+ Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies of this
+licensedocument, but changing it is not allowed.
+
+This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+0. Additional Definitions.
+
+ As used herein, “this License” refers to version 3 of the GNU Lesser
+General Public License, and the “GNU GPL” refers to version 3 of the
+GNU General Public License.
+
+ “The Library” refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+ An “Application” is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+ A “Combined Work” is a work produced by combining or linking an
+Application with the Library. The particular version of the Library
+with which the Combined Work was made is also called the “Linked
+Version”.
+
+ The “Minimal Corresponding Source” for a Combined Work means the
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+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+ The “Corresponding Application Code” for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+1. Exception to Section 3 of the GNU GPL.
+
+ You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+2. Conveying Modified Versions.
+
+ If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+    a) under this License, provided that you make a good faith effort
+    to ensure that, in the event an Application does not supply the
+    function or data, the facility still operates, and performs
+    whatever part of its purpose remains meaningful, or
+
+    b) under the GNU GPL, with none of the additional permissions of
+    this License applicable to that copy.
+
+3. Object Code Incorporating Material from Library Header Files.
+
+ The object code form of an Application may incorporate material from
+a header file that is part of the Library. You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+    a) Give prominent notice with each copy of the object code that
+    the Library is used in it and that the Library and its use are
+    covered by this License.
+
+    b) Accompany the object code with a copy of the GNU GPL and this
+    license document.
+
+4. Combined Works.
+
+ You may convey a Combined Work under terms of your choice that, taken
+together, effectively do not restrict modification of the portions of
+the Library contained in the Combined Work and reverse engineering for
+debugging such modifications, if you also do each of the following:
+
+    a) Give prominent notice with each copy of the Combined Work that
+    the Library is used in it and that the Library and its use are
+    covered by this License.
+
+    b) Accompany the Combined Work with a copy of the GNU GPL and this
+    license document.
+
+    c) For a Combined Work that displays copyright notices during
+    execution, include the copyright notice for the Library among
+    these notices, as well as a reference directing the user to the
+    copies of the GNU GPL and this license document.
+
+    d) Do one of the following:
+
+        0) Convey the Minimal Corresponding Source under the terms of
+        this License, and the Corresponding Application Code in a form
+        suitable for, and under terms that permit, the user to
+        recombine or relink the Application with a modified version of
+        the Linked Version to produce a modified Combined Work, in the
+        manner specified by section 6 of the GNU GPL for conveying
+        Corresponding Source.
+
+        1) Use a suitable shared library mechanism for linking with
+        the Library. A suitable mechanism is one that (a) uses at run
+        time a copy of the Library already present on the user's
+        computer system, and (b) will operate properly with a modified
+        version of the Library that is interface-compatible with the
+        Linked Version.
+
+    e) Provide Installation Information, but only if you would
+    otherwise be required to provide such information under section 6
+    of the GNU GPL, and only to the extent that such information is
+    necessary to install and execute a modified version of the
+    Combined Work produced by recombining or relinking the Application
+    with a modified version of the Linked Version. (If you use option
+    4d0, the Installation Information must accompany the Minimal
+    Corresponding Source and Corresponding Application Code. If you
+    use option 4d1, you must provide the Installation Information in
+    the manner specified by section 6 of the GNU GPL for conveying
+    Corresponding Source.)
+
+5. Combined Libraries.
+
+ You may place library facilities that are a work based on the Library
+side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+    a) Accompany the combined library with a copy of the same work
+    based on the Library, uncombined with any other library
+    facilities, conveyed under the terms of this License.
+
+    b) Give prominent notice with the combined library that part of
+    it is a work based on the Library, and explaining where to find
+    the accompanying uncombined form of the same work.
+
+6. Revised Versions of the GNU Lesser General Public License.
+
+ The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+as you received it specifies that a certain numbered version of the
+GNU Lesser General Public License “or any later version” applies to
+it, you have the option of following the terms and conditions either
+of that published version or of any later version published by the
+Free Software Foundation. If the Library as you received it does not
+specify a version number of the GNU Lesser General Public License,
+you may choose any version of the GNU Lesser General Public License
+ever published by the Free Software Foundation.
+
+If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the Library.
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..4a97fa7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,58 @@
+QtD3D12Window is a Qt 5.6 module providing a QD3D12Window class
+similar to QOpenGLWindow, a handy qmake rule for offline HLSL shader
+compilation via fxc, and a number of basic examples.
+
+In the .pro file, add:
+
+    QT += d3d12window
+
+Then use it like QOpenGLWindow:
+
+    class Window : public QD3D12Window
+    {
+    public:
+        void initializeD3D() { create command list etc. }
+        void resizeD3D(const QSize &size) { ... }
+        void paintD3D() { populate and execute command list }
+        void afterPresent() { wait as necessary }
+    };
+
+Use QWidget::createWindowContainer() to embed into widget-based UIs.
+
+To use the qmake rule to generate headers from shaders at build time,
+copy hlsl.prf to mkspecs/features folder of the Qt SDK.
+
+    VSPS = shader.hlsl
+
+    vshader.input = VSPS
+    vshader.header = shader_vs.h
+    vshader.entry = VS_MyShader
+    vshader.type = vs_5_0
+
+    pshader.input = VSPS
+    pshader.header = shader_ps.h
+    pshader.entry = PS_MyShader
+    pshader.type = ps_5_0
+
+    HLSL_SHADERS = vshader pshader
+    load(hlsl)
+
+Examples in order of increasing complexity:
+
+1. hellowindow - Bringing up a window and clearing the backbuffer
+
+2. hellodevicereset - Handle device removed errors and make the application able to survive a driver update, shader timeout, etc.
+
+3. hellotriangle - Basic rendering, shader and pipeline setup, constant buffers
+
+4. hellotexture - Texturing, mipmaps
+
+5. hellooffscreen - Rendering into offscreen render targets, then using them from the pixel shader
+
+       hellooffscreen_opengl - OpenGL version, for comparing performance, overhead, etc.
+
+6. hellomultisample - Rendering with MSAA
+
+7. hellocompressedtexture - Compressed textures loaded from DDS files
+
+8. hellogpumipmap - Mipmap generation via compute shaders
diff --git a/examples/examples.pro b/examples/examples.pro
new file mode 100644
index 0000000..9f8ae64
--- /dev/null
+++ b/examples/examples.pro
@@ -0,0 +1,10 @@
+TEMPLATE = subdirs
+SUBDIRS += hellowindow \
+           hellotriangle \
+           hellotexture \
+           hellooffscreen \
+           hellooffscreen_opengl \
+           hellomultisample \
+           hellogpumipmap \
+           hellocompressedtexture \
+           hellodevicereset
diff --git a/examples/hellocompressedtexture/hellocompressedtexture.pro b/examples/hellocompressedtexture/hellocompressedtexture.pro
new file mode 100644
index 0000000..6db7ae5
--- /dev/null
+++ b/examples/hellocompressedtexture/hellocompressedtexture.pro
@@ -0,0 +1,23 @@
+TEMPLATE = app
+QT += d3d12window widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+RESOURCES = hellocompressedtexture.qrc
+
+LIBS = -ld3d12
+
+VSPS = shader.hlsl
+
+vshader.input = VSPS
+vshader.header = shader_vs.h
+vshader.entry = VS_Texture
+vshader.type = vs_5_0
+
+pshader.input = VSPS
+pshader.header = shader_ps.h
+pshader.entry = PS_Texture
+pshader.type = ps_5_0
+
+HLSL_SHADERS = vshader pshader
+load(hlsl)
diff --git a/examples/hellocompressedtexture/hellocompressedtexture.qrc b/examples/hellocompressedtexture/hellocompressedtexture.qrc
new file mode 100644
index 0000000..2f44da8
--- /dev/null
+++ b/examples/hellocompressedtexture/hellocompressedtexture.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>qt.dds</file>
+</qresource>
+</RCC>
diff --git a/examples/hellocompressedtexture/main.cpp b/examples/hellocompressedtexture/main.cpp
new file mode 100644
index 0000000..c00dd81
--- /dev/null
+++ b/examples/hellocompressedtexture/main.cpp
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QWidget>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QScrollArea>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *d3dw = new Window;
+    QWidget w;
+    QVBoxLayout *vl = new QVBoxLayout;
+    vl->addWidget(new QPushButton("Widgets + a native child window with D3D12, this time in a scroll area"));
+    vl->addWidget(new QLabel("Unlike hellotexture, the image is now loaded from a DDS file (BC1) instead of a PNG"));
+    QWidget *ww = QWidget::createWindowContainer(d3dw);
+    ww->setMinimumSize(100, 100);
+    vl->addWidget(ww);
+    vl->setStretchFactor(ww, 1.0f);
+    w.resize(300, 300);
+    w.setLayout(vl);
+    w.show();
+
+    return app.exec();
+}
diff --git a/examples/hellocompressedtexture/qt.dds b/examples/hellocompressedtexture/qt.dds
new file mode 100644
index 0000000..1581cfb
--- /dev/null
+++ b/examples/hellocompressedtexture/qt.dds
diff --git a/examples/hellocompressedtexture/shader.hlsl b/examples/hellocompressedtexture/shader.hlsl
new file mode 100644
index 0000000..be69b39
--- /dev/null
+++ b/examples/hellocompressedtexture/shader.hlsl
@@ -0,0 +1,36 @@
+cbuffer ConstantBuffer : register(b0)
+{
+        float4x4 modelview;
+        float4x4 projection;
+};
+
+struct VSInput
+{
+        float4 position : POSITION;
+        float2 coord : TEXCOORD0;
+};
+
+struct PSInput
+{
+        float4 position : SV_POSITION;
+        float2 coord : TEXCOORD0;
+};
+
+Texture2D tex : register(t0);
+SamplerState samp : register(s0);
+
+PSInput VS_Texture(VSInput input)
+{
+        PSInput result;
+
+        float4x4 mvp = mul(projection, modelview);
+        result.position = mul(mvp, input.position);
+        result.coord = input.coord;
+
+        return result;
+}
+
+float4 PS_Texture(PSInput input) : SV_TARGET
+{
+        return tex.Sample(samp, input.coord);
+}
diff --git a/examples/hellocompressedtexture/window.cpp b/examples/hellocompressedtexture/window.cpp
new file mode 100644
index 0000000..74c7e6a
--- /dev/null
+++ b/examples/hellocompressedtexture/window.cpp
@@ -0,0 +1,513 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include "shader_vs.h"
+#include "shader_ps.h"
+#include <QFile>
+
+Window::Window()
+    : f(Q_NULLPTR),
+      cbPtr(Q_NULLPTR),
+      rotationAngle(0)
+{
+}
+
+Window::~Window()
+{
+    if (cbPtr)
+        constantBuffer->Unmap(0, Q_NULLPTR);
+
+    delete f;
+}
+
+static const quint32 DDS_MAGIC = 0x20534444; // 'DDS '
+static const quint32 DDS_FOURCC = 4;
+
+#define FOURCC(c0, c1, c2, c3) ((c0) | ((c1) << 8) | ((c2) << 16) | ((c3 << 24)))
+
+struct DDS_PIXELFORMAT {
+    quint32 size;
+    quint32 flags;
+    quint32 fourCC;
+    quint32 rgbBitCount;
+    quint32 rBitMask;
+    quint32 gBitMask;
+    quint32 bBitMask;
+    quint32 aBitMask;
+};
+
+struct DDS_HEADER {
+    quint32 size;
+    quint32 flags;
+    quint32 height;
+    quint32 width;
+    quint32 pitch;
+    quint32 depth;
+    quint32 mipMapCount;
+    quint32 reserved1[11];
+    DDS_PIXELFORMAT pixelFormat;
+    quint32 caps;
+    quint32 caps2;
+    quint32 caps3;
+    quint32 caps4;
+    quint32 reserved2;
+};
+
+static quint32 unalignedDxt1Size(const QSize &size, quint32 *bpl = Q_NULLPTR, quint32 *vertBlocks = Q_NULLPTR)
+{
+    static const quint32 blockSize = 8; // 8 bytes for BC1
+    const quint32 bytesPerLine = qMax<quint32>(1, (size.width() + 3) / 4) * blockSize;
+    const quint32 ySize = qMax<quint32>(1, (size.height() + 3) / 4);
+    if (bpl)
+        *bpl = bytesPerLine;
+    if (vertBlocks)
+        *vertBlocks = ySize;
+    return bytesPerLine * ySize;
+}
+
+// We only support DXT1 (BC1) for the demo's purposes.
+static QByteArrayList loadDXT1(const QString &filename, DXGI_FORMAT *format, QSize *size, int *mipLevelCount)
+{
+    QFile f(filename);
+    if (!f.open(QIODevice::ReadOnly)) {
+        qWarning("Failed to open %s", qPrintable(filename));
+        return QByteArrayList();
+    }
+
+    quint32 magic = 0;
+    f.read(reinterpret_cast<char *>(&magic), sizeof(magic));
+    if (magic != DDS_MAGIC) {
+        qWarning("%s is not a DDS file", qPrintable(filename));
+        return QByteArrayList();
+    }
+    DDS_HEADER header;
+    f.read(reinterpret_cast<char *>(&header), sizeof(header));
+    if (header.size != sizeof(DDS_HEADER)) {
+        qWarning("Invalid DDS header size");
+        return QByteArrayList();
+    }
+    if (header.pixelFormat.size != sizeof(DDS_PIXELFORMAT)) {
+        qWarning("Invalid DDS pixel format size");
+        return QByteArrayList();
+    }
+    if (!(header.pixelFormat.flags & DDS_FOURCC)) {
+        qWarning("Invalid DDS pixel format");
+        return QByteArrayList();
+    }
+    if (header.pixelFormat.fourCC != FOURCC('D', 'X', 'T', '1')) {
+        qWarning("Only DXT1 (BC1) is supported");
+        return QByteArrayList();
+    }
+
+    QByteArrayList data;
+    QSize sz(header.width, header.height);
+    for (quint32 level = 0; level < header.mipMapCount; ++level) {
+        data.append(f.read(unalignedDxt1Size(sz)));
+        sz.setWidth(qMax(1, sz.width() / 2));
+        sz.setHeight(qMax(1, sz.height() / 2));
+    }
+
+    *format = DXGI_FORMAT_BC1_UNORM;
+    *size = QSize(header.width, header.height);
+    *mipLevelCount = header.mipMapCount;
+
+    return data;
+}
+
+void Window::initializeD3D()
+{
+    DXGI_FORMAT textureFormat;
+    QSize textureSize;
+    int mipLevels;
+    QByteArrayList texData = loadDXT1(QStringLiteral(":/qt.dds"), &textureFormat, &textureSize, &mipLevels);
+    if (texData.isEmpty())
+        return;
+
+    f = createFence();
+    ID3D12Device *dev = device();
+
+    // One static sampler (no sampler heap is needed).
+    D3D12_STATIC_SAMPLER_DESC sampler = {};
+    sampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
+    sampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.MinLOD = 0.0f;
+    sampler.MaxLOD = D3D12_FLOAT32_MAX;
+    sampler.ShaderRegister = 0;
+    sampler.RegisterSpace = 0;
+    sampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
+
+    // In addition to the constant buffer view we will now also have a shader
+    // resource view in order to expose the texture to the pixel shader.
+    D3D12_DESCRIPTOR_RANGE descRange[2];
+    descRange[0].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_CBV;
+    descRange[0].NumDescriptors = 1;
+    descRange[0].BaseShaderRegister = 0; // b0
+    descRange[0].RegisterSpace = 0;
+    descRange[0].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+    descRange[1].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
+    descRange[1].NumDescriptors = 1;
+    descRange[1].BaseShaderRegister = 0; // t0
+    descRange[1].RegisterSpace = 0;
+    descRange[1].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+
+    D3D12_ROOT_PARAMETER rootParameter;
+    rootParameter.ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+    rootParameter.ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
+    rootParameter.DescriptorTable.NumDescriptorRanges = 2;
+    rootParameter.DescriptorTable.pDescriptorRanges = descRange;
+
+    D3D12_ROOT_SIGNATURE_DESC desc;
+    desc.NumParameters = 1;
+    desc.pParameters = &rootParameter;
+    desc.NumStaticSamplers = 1;
+    desc.pStaticSamplers = &sampler;
+    desc.Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        qWarning("Failed to serialize root signature");
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&rootSignature)))) {
+        qWarning("Failed to create root signature");
+        return;
+    }
+
+    D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
+    };
+
+    D3D12_SHADER_BYTECODE vshader;
+    vshader.pShaderBytecode = g_VS_Texture;
+    vshader.BytecodeLength = sizeof(g_VS_Texture);
+    D3D12_SHADER_BYTECODE pshader;
+    pshader.pShaderBytecode = g_PS_Texture;
+    pshader.BytecodeLength = sizeof(g_PS_Texture);
+
+    D3D12_RASTERIZER_DESC rastDesc = {};
+    rastDesc.FillMode = D3D12_FILL_MODE_SOLID;
+    rastDesc.CullMode = D3D12_CULL_MODE_BACK;
+    rastDesc.FrontCounterClockwise = TRUE; // Vertices are given CCW
+    rastDesc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
+    rastDesc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
+    rastDesc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
+    rastDesc.DepthClipEnable = TRUE;
+
+    // Our material is transparent (the image has alpha < 255). Enable blending.
+    const D3D12_RENDER_TARGET_BLEND_DESC defaultRenderTargetBlendDesc = {
+        TRUE, FALSE,
+        D3D12_BLEND_SRC_ALPHA, D3D12_BLEND_INV_SRC_ALPHA, D3D12_BLEND_OP_ADD,
+        D3D12_BLEND_ZERO, D3D12_BLEND_ZERO, D3D12_BLEND_OP_ADD,
+        D3D12_LOGIC_OP_NOOP,
+        D3D12_COLOR_WRITE_ENABLE_ALL
+    };
+    D3D12_BLEND_DESC blendDesc = {};
+    blendDesc.RenderTarget[0] = defaultRenderTargetBlendDesc;
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
+    psoDesc.pRootSignature = rootSignature.Get();
+    psoDesc.VS = vshader;
+    psoDesc.PS = pshader;
+    psoDesc.RasterizerState = rastDesc;
+    psoDesc.BlendState = blendDesc;
+    psoDesc.DepthStencilState.DepthEnable = TRUE;
+    psoDesc.DepthStencilState.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
+    psoDesc.DepthStencilState.DepthFunc = D3D12_COMPARISON_FUNC_LESS;
+    psoDesc.DepthStencilState.StencilEnable = FALSE;
+    psoDesc.SampleMask = UINT_MAX;
+    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+    psoDesc.NumRenderTargets = 1;
+    psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
+    psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT;
+    psoDesc.SampleDesc.Count = 1;
+    if (FAILED(dev->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&pipelineState)))) {
+        qWarning("Failed to create graphics pipeline state");
+        return;
+    }
+
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR, IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+
+    // Vertex buffer
+    const float vertices[] = {
+        -0.5f, -0.5f, 0, /* coords */ 0, 1, // the image was not flipped so accommodate for it here
+        0.5f, -0.5f, 0,               1, 1,
+        -0.5f, 0.5f, 0,               0, 0,
+
+        -0.5f, 0.5f, 0,               0, 0,
+        0.5f, -0.5f, 0,               1, 1,
+        0.5f, 0.5f, 0,                1, 0
+    };
+    const UINT vertexBufferSize = sizeof(vertices);
+
+    D3D12_HEAP_PROPERTIES defaultHeapProp = {};
+    defaultHeapProp.Type = D3D12_HEAP_TYPE_DEFAULT;
+    D3D12_HEAP_PROPERTIES uploadHeapProp = defaultHeapProp;
+    uploadHeapProp.Type = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC bufDesc = {};
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Width = vertexBufferSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&vertexBuffer)))) {
+        qWarning("Failed to create committed resource (vertex buffer)");
+        return;
+    }
+
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(vertexBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (vertex buffer)");
+        return;
+    }
+    memcpy(p, vertices, vertexBufferSize);
+    vertexBuffer->Unmap(0, Q_NULLPTR);
+
+    vertexBufferView.BufferLocation = vertexBuffer->GetGPUVirtualAddress();
+    vertexBufferView.StrideInBytes = (3 + 2) * sizeof(float);
+    vertexBufferView.SizeInBytes = vertexBufferSize;
+
+    // Constant buffer
+    const UINT CB_SIZE = alignedCBSize(128); // 2 * float4x4
+    bufDesc.Width = CB_SIZE;
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&constantBuffer)))) {
+        qWarning("Failed to create committed resource (constant buffer)");
+        return;
+    }
+
+    if (FAILED(constantBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (constant buffer)");
+        return;
+    }
+    cbPtr = p; // won't Unmap() this here
+
+    // Texture (with mipmaps, if the DDS file provided them)
+    D3D12_RESOURCE_DESC textureDesc = {};
+    textureDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
+    textureDesc.Width = textureSize.width();
+    textureDesc.Height = textureSize.height();
+    textureDesc.DepthOrArraySize = 1;
+    textureDesc.MipLevels = mipLevels;
+    textureDesc.Format = textureFormat;
+    textureDesc.SampleDesc.Count = 1;
+    textureDesc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
+
+    // Ignore UMA for now and do the discrete-friendly upload via an upload buffer (no CPU access to the texture).
+    if (FAILED(dev->CreateCommittedResource(&defaultHeapProp, D3D12_HEAP_FLAG_NONE, &textureDesc,
+                                            D3D12_RESOURCE_STATE_COPY_DEST, Q_NULLPTR, IID_PPV_ARGS(&texture)))) {
+        qWarning("Failed to create texture resource");
+        return;
+    }
+
+    ComPtr<ID3D12Resource> textureUploadBuffer;
+    const int MAX_MIP_LEVELS = 16;
+    Q_ASSERT(mipLevels <= MAX_MIP_LEVELS);
+    D3D12_PLACED_SUBRESOURCE_FOOTPRINT textureLayout[MAX_MIP_LEVELS];
+    quint32 unalignedPitch[MAX_MIP_LEVELS], pitch[MAX_MIP_LEVELS], vertBlocks[MAX_MIP_LEVELS];
+    int mipOffset = 0;
+    QSize mipSize = textureSize;
+    // Fill out the offset and footprint info ourselves as GetCopyableFootprints does not seem to work with compressed formats.
+    // Offset and pitch must be aligned as required.
+    for (int level = 0; level < mipLevels; ++level) {
+        unalignedDxt1Size(mipSize, &unalignedPitch[level], &vertBlocks[level]);
+        pitch[level] = alignedTexturePitch(unalignedPitch[level]);
+        textureLayout[level].Offset = mipOffset;
+        textureLayout[level].Footprint.Format = DXGI_FORMAT_BC1_UNORM;
+        textureLayout[level].Footprint.Width = mipSize.width();
+        textureLayout[level].Footprint.Height = mipSize.height();
+        textureLayout[level].Footprint.Depth = 1;
+        textureLayout[level].Footprint.RowPitch = pitch[level];
+        mipOffset += alignedTextureOffset(pitch[level] * vertBlocks[level]);
+        mipSize.setWidth(qMax(1, mipSize.width() / 2));
+        mipSize.setHeight(qMax(1, mipSize.height() / 2));
+    }
+    bufDesc.Width = mipOffset;
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&textureUploadBuffer)))) {
+        qWarning("Failed to create texture upload buffer resource");
+        return;
+    }
+
+    if (FAILED(textureUploadBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (texture upload buffer)");
+        return;
+    }
+    // Have to copy line-by-line to account for the potentially bigger row pitch in the upload buffer.
+    for (int level = 0; level < mipLevels; ++level) {
+        quint8 *dst = p + textureLayout[level].Offset;
+        const quint8 *src = (const quint8 *) texData[level].constData();
+        for (quint32 y = 0; y < vertBlocks[level]; ++y) {
+            memcpy(dst, src, unalignedPitch[level]);
+            src += unalignedPitch[level];
+            dst += pitch[level];
+        }
+    }
+    textureUploadBuffer->Unmap(0, Q_NULLPTR);
+
+    for (int level = 0; level < mipLevels; ++level) {
+        D3D12_TEXTURE_COPY_LOCATION dstLoc;
+        dstLoc.pResource = texture.Get();
+        dstLoc.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
+        dstLoc.SubresourceIndex = level;
+        D3D12_TEXTURE_COPY_LOCATION srcLoc;
+        srcLoc.pResource = textureUploadBuffer.Get();
+        srcLoc.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
+        srcLoc.PlacedFootprint = textureLayout[level];
+        commandList->CopyTextureRegion(&dstLoc, 0, 0, 0, &srcLoc, Q_NULLPTR);
+    }
+
+    // once the copy is done the texture is ready to be used from the pixel shader
+    transitionResource(texture.Get(), commandList.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);
+
+    // Constant buffer view and shader resource view descriptors are stored in the same heap.
+    const UINT cbvSrvStride = dev->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
+    D3D12_DESCRIPTOR_HEAP_DESC cbvSrvHeapDesc = {};
+    cbvSrvHeapDesc.NumDescriptors = 2;
+    cbvSrvHeapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
+    cbvSrvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
+    if (FAILED(dev->CreateDescriptorHeap(&cbvSrvHeapDesc, IID_PPV_ARGS(&cbvSrvHeap)))) {
+        qWarning("Failed to create CBV/SRV/UAV descriptor heap");
+        return;
+    }
+
+    D3D12_CPU_DESCRIPTOR_HANDLE cbvSrvHandle = cbvSrvHeap->GetCPUDescriptorHandleForHeapStart();
+    D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {};
+    cbvDesc.BufferLocation = constantBuffer->GetGPUVirtualAddress();
+    cbvDesc.SizeInBytes = CB_SIZE;
+    dev->CreateConstantBufferView(&cbvDesc, cbvSrvHandle);
+    cbvSrvHandle.ptr += cbvSrvStride;
+
+    D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {};
+    srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
+    srvDesc.Format = textureDesc.Format;
+    srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
+    srvDesc.Texture2D.MipLevels = mipLevels;
+    dev->CreateShaderResourceView(texture.Get(), &srvDesc, cbvSrvHandle);
+
+    // Execute the texture upload.
+    commandList->Close();
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    // Block until all the above has finished.
+    waitForGPU(f);
+
+    setupProjection();
+}
+
+void Window::resizeD3D(const QSize &)
+{
+    setupProjection();
+}
+
+void Window::setupProjection()
+{
+    projection.setToIdentity();
+    projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::paintD3D()
+{
+    modelview.setToIdentity();
+    modelview.translate(0, 0, -2);
+    // our highly sophisticated animation
+    modelview.rotate(rotationAngle, 0, 0, 1);
+    rotationAngle += 1;
+
+    memcpy(cbPtr, modelview.constData(), 16 * sizeof(float));
+    memcpy(cbPtr + 16 * sizeof(float), projection.constData(), 16 * sizeof(float));
+
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), pipelineState.Get());
+
+    commandList->SetGraphicsRootSignature(rootSignature.Get());
+
+    ID3D12DescriptorHeap *heaps[] = { cbvSrvHeap.Get() };
+    commandList->SetDescriptorHeaps(_countof(heaps), heaps);
+    commandList->SetGraphicsRootDescriptorTable(0, cbvSrvHeap->GetGPUDescriptorHandleForHeapStart());
+
+    D3D12_VIEWPORT viewport = { 0, 0, float(width()), float(height()), 0, 1 };
+    commandList->RSSetViewports(1, &viewport);
+    D3D12_RECT scissorRect = { 0, 0, width() - 1, height() - 1 };
+    commandList->RSSetScissorRects(1, &scissorRect);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = backBufferRenderTargetCPUHandle();
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = depthStencilCPUHandle();
+    commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
+
+    const float clearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
+    commandList->ClearRenderTargetView(rtvHandle, clearColor, 0, Q_NULLPTR);
+    commandList->ClearDepthStencilView(dsvHandle, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, Q_NULLPTR);
+
+    commandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    commandList->IASetVertexBuffers(0, 1, &vertexBufferView);
+    commandList->DrawInstanced(6, 1, 0, 0);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT);
+    commandList->Close();
+
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update();
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f);
+}
diff --git a/examples/hellocompressedtexture/window.h b/examples/hellocompressedtexture/window.h
new file mode 100644
index 0000000..a0fef7b
--- /dev/null
+++ b/examples/hellocompressedtexture/window.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+#include <QMatrix4x4>
+
+class Window : public QD3D12Window
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+private:
+    void setupProjection();
+
+    Fence *f;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    ComPtr<ID3D12PipelineState> pipelineState;
+    ComPtr<ID3D12RootSignature> rootSignature;
+    ComPtr<ID3D12Resource> vertexBuffer;
+    ComPtr<ID3D12Resource> constantBuffer;
+    ComPtr<ID3D12Resource> texture;
+    ComPtr<ID3D12DescriptorHeap> cbvSrvHeap;
+    D3D12_VERTEX_BUFFER_VIEW vertexBufferView;
+
+    QMatrix4x4 projection;
+    QMatrix4x4 modelview;
+    quint8 *cbPtr;
+    float rotationAngle;
+};
diff --git a/examples/hellodevicereset/hellodevicereset.pro b/examples/hellodevicereset/hellodevicereset.pro
new file mode 100644
index 0000000..bf95b25
--- /dev/null
+++ b/examples/hellodevicereset/hellodevicereset.pro
@@ -0,0 +1,17 @@
+TEMPLATE = app
+QT += d3d12window widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+
+LIBS = -ld3d12
+
+CS = tdr.hlsl
+
+shader.input = CS
+shader.header = tdr.h
+shader.entry = timeout
+shader.type = cs_5_0
+
+HLSL_SHADERS = shader
+load(hlsl)
diff --git a/examples/hellodevicereset/main.cpp b/examples/hellodevicereset/main.cpp
new file mode 100644
index 0000000..fb301b2
--- /dev/null
+++ b/examples/hellodevicereset/main.cpp
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QWidget>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QLabel>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *d3dw = new Window;
+    QWidget w;
+    QVBoxLayout *vl = new QVBoxLayout;
+    QPushButton *btn = new QPushButton("Generate a timeout and reset the GPU");
+    QObject::connect(btn, &QPushButton::clicked, d3dw, &Window::timeout);
+    vl->addWidget(btn);
+    vl->addWidget(new QLabel("Due to handling device removed errors and correctly releasing and reinitializing,\n"
+                             "the application should be able to survive. Watch the debug output."));
+    QWidget *ww = QWidget::createWindowContainer(d3dw);
+    ww->setMinimumHeight(300);
+    vl->addWidget(ww);
+    vl->setStretchFactor(ww, 1.0f);
+    w.resize(400, 400);
+    w.setLayout(vl);
+    w.show();
+
+    return app.exec();
+}
diff --git a/examples/hellodevicereset/tdr.hlsl b/examples/hellodevicereset/tdr.hlsl
new file mode 100644
index 0000000..f32d4fb
--- /dev/null
+++ b/examples/hellodevicereset/tdr.hlsl
@@ -0,0 +1,11 @@
+// http://gamedev.stackexchange.com/questions/108141/how-can-i-test-dxgi-error-device-removed-error-handling
+
+RWBuffer<uint> uav;
+cbuffer ConstantBuffer { uint zero; }
+
+[numthreads(256, 1, 1)]
+void timeout(uint3 id: SV_DispatchThreadID)
+{
+    while (zero == 0)
+        uav[id.x] = zero;
+}
diff --git a/examples/hellodevicereset/window.cpp b/examples/hellodevicereset/window.cpp
new file mode 100644
index 0000000..ff7f313
--- /dev/null
+++ b/examples/hellodevicereset/window.cpp
@@ -0,0 +1,155 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include "tdr.h"
+
+void Window::initializeD3D()
+{
+    f.reset(createFence());
+    ID3D12Device *dev = device();
+
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR,
+                                      IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+    commandList->Close();
+
+    D3D12_DESCRIPTOR_RANGE descRange[2];
+    descRange[0].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_CBV;
+    descRange[0].NumDescriptors = 1;
+    descRange[0].BaseShaderRegister = 0;
+    descRange[0].RegisterSpace = 0;
+    descRange[0].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+    descRange[1].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_UAV;
+    descRange[1].NumDescriptors = 1;
+    descRange[1].BaseShaderRegister = 0;
+    descRange[1].RegisterSpace = 0;
+    descRange[1].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+
+    D3D12_ROOT_PARAMETER param;
+    param.ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+    param.ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
+    param.DescriptorTable.NumDescriptorRanges = 2;
+    param.DescriptorTable.pDescriptorRanges = descRange;
+
+    D3D12_ROOT_SIGNATURE_DESC desc = {};
+    desc.NumParameters = 1;
+    desc.pParameters = &param;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        QByteArray msg(static_cast<const char *>(error->GetBufferPointer()), error->GetBufferSize());
+        qWarning("Failed to serialize compute root signature: %s", qPrintable(msg));
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(),
+                                        IID_PPV_ARGS(&computeRootSignature)))) {
+        qWarning("Failed to create compute root signature");
+        return;
+    }
+
+    D3D12_COMPUTE_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.pRootSignature = computeRootSignature.Get();
+    psoDesc.CS.pShaderBytecode = g_timeout;
+    psoDesc.CS.BytecodeLength = sizeof(g_timeout);
+
+    if (FAILED(dev->CreateComputePipelineState(&psoDesc, IID_PPV_ARGS(&computeState)))) {
+        qWarning("Failed to create compute pipeline state");
+        return;
+    }
+}
+
+void Window::releaseD3D()
+{
+    // Release all resources. initializeD3D() will get invoked later on.
+    commandList = Q_NULLPTR;
+    computeState = Q_NULLPTR;
+    computeRootSignature = Q_NULLPTR;
+    f.reset();
+}
+
+void Window::resizeD3D(const QSize &)
+{
+}
+
+void Window::paintD3D()
+{
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), Q_NULLPTR);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
+
+    green += 0.01f;
+    if (green > 1.0f)
+        green = 0.0f;
+    const float clearColor[] = { 0.0f, green, 0.0f, 1.0f };
+    commandList->ClearRenderTargetView(backBufferRenderTargetCPUHandle(), clearColor, 0, Q_NULLPTR);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT);
+
+    commandList->Close();
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update();
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f.data());
+}
+
+void Window::timeout()
+{
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), computeState.Get());
+
+    commandList->SetComputeRootSignature(computeRootSignature.Get());
+    commandList->Dispatch(256, 1, 1);
+
+    commandList->Close();
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    waitForGPU(f.data());
+}
diff --git a/examples/hellodevicereset/window.h b/examples/hellodevicereset/window.h
new file mode 100644
index 0000000..2de75bc
--- /dev/null
+++ b/examples/hellodevicereset/window.h
@@ -0,0 +1,68 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+
+class Window : public QD3D12Window
+{
+    Q_OBJECT
+
+public:
+    Window() : green(0) { }
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void releaseD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+public slots:
+    void timeout();
+
+private:
+    void setupProjection();
+
+    QScopedPointer<Fence> f;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    ComPtr<ID3D12PipelineState> computeState;
+    ComPtr<ID3D12RootSignature> computeRootSignature;
+
+    float green;
+};
diff --git a/examples/hellogpumipmap/hellogpumipmap.pro b/examples/hellogpumipmap/hellogpumipmap.pro
new file mode 100644
index 0000000..286784e
--- /dev/null
+++ b/examples/hellogpumipmap/hellogpumipmap.pro
@@ -0,0 +1,29 @@
+TEMPLATE = app
+QT += d3d12window widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+RESOURCES = hellogpumipmap.qrc
+
+LIBS = -ld3d12
+
+VSPS = shader.hlsl
+CS = mipmapgen.hlsl
+
+vshader.input = VSPS
+vshader.header = shader_vs.h
+vshader.entry = VS_Texture
+vshader.type = vs_5_0
+
+pshader.input = VSPS
+pshader.header = shader_ps.h
+pshader.entry = PS_Texture
+pshader.type = ps_5_0
+
+cshader.input = CS
+cshader.header = shader_cs.h
+cshader.entry = CS_Generate4MipMaps
+cshader.type = cs_5_0
+
+HLSL_SHADERS = vshader pshader cshader
+load(hlsl)
diff --git a/examples/hellogpumipmap/hellogpumipmap.qrc b/examples/hellogpumipmap/hellogpumipmap.qrc
new file mode 100644
index 0000000..ff1d0e5
--- /dev/null
+++ b/examples/hellogpumipmap/hellogpumipmap.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>qt.png</file>
+</qresource>
+</RCC>
diff --git a/examples/hellogpumipmap/main.cpp b/examples/hellogpumipmap/main.cpp
new file mode 100644
index 0000000..57830fa
--- /dev/null
+++ b/examples/hellogpumipmap/main.cpp
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QWidget>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QLabel>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *d3dw = new Window;
+    QWidget w;
+    QVBoxLayout *vl = new QVBoxLayout;
+    vl->addWidget(new QPushButton("Widgets + a native child window with D3D12"));
+    vl->addWidget(new QLabel("Like hellotexture but this time the mipmaps are generated via a compute shader"));
+    QWidget *ww = QWidget::createWindowContainer(d3dw);
+    ww->setMinimumWidth(200);
+    ww->setMinimumHeight(200);
+    vl->addWidget(ww);
+    vl->setStretchFactor(ww, 1.0f);
+    w.resize(800, 800);
+    w.setLayout(vl);
+    w.show();
+
+    return app.exec();
+}
diff --git a/examples/hellogpumipmap/mipmapgen.hlsl b/examples/hellogpumipmap/mipmapgen.hlsl
new file mode 100644
index 0000000..6793b53
--- /dev/null
+++ b/examples/hellogpumipmap/mipmapgen.hlsl
@@ -0,0 +1,60 @@
+static const uint GROUP_DIM = 8; // 2 ^ (out_mip_count - 1)
+
+Texture2D tex : register(t0);
+SamplerState samp : register(s0);
+
+cbuffer ConstantBuffer : register(b0)
+{
+    uint2 mip1Size;
+    uint sampleLevel;
+    uint totalMips;
+}
+
+RWTexture2D<float4> mip1 : register(u0);
+RWTexture2D<float4> mip2 : register(u1);
+RWTexture2D<float4> mip3 : register(u2);
+RWTexture2D<float4> mip4 : register(u3);
+
+groupshared float4 groupColor[GROUP_DIM][GROUP_DIM];
+
+[numthreads(GROUP_DIM, GROUP_DIM, 1)]
+void CS_Generate4MipMaps(uint3 localId: SV_GroupThreadId, uint3 globalId: SV_DispatchThreadID)
+{
+    const float2 coord = float2(1.0f / float(mip1Size.x), 1.0f / float(mip1Size.y)) * (globalId.xy + 0.5);
+    float4 c = tex.SampleLevel(samp, coord, sampleLevel);
+
+    mip1[globalId.xy] = c;
+    groupColor[localId.y][localId.x] = c;
+
+    if (sampleLevel + 1 >= totalMips)
+        return;
+
+    GroupMemoryBarrierWithGroupSync();
+
+    if ((localId.x & 1) == 0 && (localId.y & 1) == 0) {
+        c = (c + groupColor[localId.y][localId.x + 1] + groupColor[localId.y + 1][localId.x] + groupColor[localId.y + 1][localId.x + 1]) / 4.0;
+        mip2[globalId.xy / 2] = c;
+        groupColor[localId.y][localId.x] = c;
+    }
+
+    if (sampleLevel + 2 >= totalMips)
+        return;
+
+    GroupMemoryBarrierWithGroupSync();
+
+    if ((localId.x & 3) == 0 && (localId.y & 3) == 0) {
+        c = (c + groupColor[localId.y][localId.x + 2] + groupColor[localId.y + 2][localId.x] + groupColor[localId.y + 2][localId.x + 2]) / 4.0;
+        mip3[globalId.xy / 4] = c;
+        groupColor[localId.y][localId.x] = c;
+    }
+
+    if (sampleLevel + 3 >= totalMips)
+        return;
+
+    GroupMemoryBarrierWithGroupSync();
+
+    if ((localId.x & 7) == 0 && (localId.y & 7) == 0) {
+        c = (c + groupColor[localId.y][localId.x + 3] + groupColor[localId.y + 3][localId.x] + groupColor[localId.y + 3][localId.x + 3]) / 4.0;
+        mip4[globalId.xy / 8] = c;
+    }
+}
diff --git a/examples/hellogpumipmap/qt.png b/examples/hellogpumipmap/qt.png
new file mode 100644
index 0000000..f30eec0
--- /dev/null
+++ b/examples/hellogpumipmap/qt.png
diff --git a/examples/hellogpumipmap/shader.hlsl b/examples/hellogpumipmap/shader.hlsl
new file mode 100644
index 0000000..be69b39
--- /dev/null
+++ b/examples/hellogpumipmap/shader.hlsl
@@ -0,0 +1,36 @@
+cbuffer ConstantBuffer : register(b0)
+{
+        float4x4 modelview;
+        float4x4 projection;
+};
+
+struct VSInput
+{
+        float4 position : POSITION;
+        float2 coord : TEXCOORD0;
+};
+
+struct PSInput
+{
+        float4 position : SV_POSITION;
+        float2 coord : TEXCOORD0;
+};
+
+Texture2D tex : register(t0);
+SamplerState samp : register(s0);
+
+PSInput VS_Texture(VSInput input)
+{
+        PSInput result;
+
+        float4x4 mvp = mul(projection, modelview);
+        result.position = mul(mvp, input.position);
+        result.coord = input.coord;
+
+        return result;
+}
+
+float4 PS_Texture(PSInput input) : SV_TARGET
+{
+        return tex.Sample(samp, input.coord);
+}
diff --git a/examples/hellogpumipmap/window.cpp b/examples/hellogpumipmap/window.cpp
new file mode 100644
index 0000000..c87de78
--- /dev/null
+++ b/examples/hellogpumipmap/window.cpp
@@ -0,0 +1,525 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include "shader_vs.h"
+#include "shader_ps.h"
+#include "shader_cs.h"
+
+// size must be a power of two due to the way mipmap generation is done
+static const int TEXTURE_WIDTH = 512;
+static const int TEXTURE_HEIGHT = 512;
+
+static const int TEXTURE_MIP_LEVELS = 10; // ceil(log2(max(width, height))) + 1
+
+Window::Window()
+    : f(Q_NULLPTR),
+      cbPtr(Q_NULLPTR),
+      rotationAngle(0)
+{
+}
+
+Window::~Window()
+{
+    if (cbPtr)
+        constantBuffer->Unmap(0, Q_NULLPTR);
+
+    delete f;
+}
+
+void Window::initializeD3D()
+{
+    QImage qtLogo = QImage(QStringLiteral(":/qt.png")).convertToFormat(QImage::Format_RGBA8888).scaled(TEXTURE_WIDTH, TEXTURE_HEIGHT);
+    if (qtLogo.isNull()) {
+        qWarning("Failed to load image data");
+        return;
+    }
+
+    f = createFence();
+    ID3D12Device *dev = device();
+
+    // One static sampler (no sampler heap is needed).
+    D3D12_STATIC_SAMPLER_DESC sampler = {};
+    sampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
+    sampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.MinLOD = 0.0f;
+    sampler.MaxLOD = D3D12_FLOAT32_MAX;
+    sampler.ShaderRegister = 0;
+    sampler.RegisterSpace = 0;
+    sampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
+
+    // In addition to the constant buffer view we will now also have a shader
+    // resource view in order to expose the texture to the pixel shader.
+    D3D12_DESCRIPTOR_RANGE descRange[2];
+    descRange[0].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_CBV;
+    descRange[0].NumDescriptors = 1;
+    descRange[0].BaseShaderRegister = 0; // b0
+    descRange[0].RegisterSpace = 0;
+    descRange[0].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+    descRange[1].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
+    descRange[1].NumDescriptors = 1;
+    descRange[1].BaseShaderRegister = 0; // t0
+    descRange[1].RegisterSpace = 0;
+    descRange[1].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+
+    D3D12_ROOT_PARAMETER rootParameter;
+    rootParameter.ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+    rootParameter.ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
+    rootParameter.DescriptorTable.NumDescriptorRanges = 2;
+    rootParameter.DescriptorTable.pDescriptorRanges = descRange;
+
+    D3D12_ROOT_SIGNATURE_DESC desc;
+    desc.NumParameters = 1;
+    desc.pParameters = &rootParameter;
+    desc.NumStaticSamplers = 1;
+    desc.pStaticSamplers = &sampler;
+    desc.Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        QByteArray msg(static_cast<const char *>(error->GetBufferPointer()), error->GetBufferSize());
+        qWarning("Failed to serialize root signature: %s", qPrintable(msg));
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&rootSignature)))) {
+        qWarning("Failed to create root signature");
+        return;
+    }
+
+    D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
+    };
+
+    D3D12_SHADER_BYTECODE vshader;
+    vshader.pShaderBytecode = g_VS_Texture;
+    vshader.BytecodeLength = sizeof(g_VS_Texture);
+    D3D12_SHADER_BYTECODE pshader;
+    pshader.pShaderBytecode = g_PS_Texture;
+    pshader.BytecodeLength = sizeof(g_PS_Texture);
+
+    D3D12_RASTERIZER_DESC rastDesc = {};
+    rastDesc.FillMode = D3D12_FILL_MODE_SOLID;
+    rastDesc.CullMode = D3D12_CULL_MODE_BACK;
+    rastDesc.FrontCounterClockwise = TRUE; // Vertices are given CCW
+    rastDesc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
+    rastDesc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
+    rastDesc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
+    rastDesc.DepthClipEnable = TRUE;
+
+    // Our material is transparent (the image has alpha < 255). Enable blending.
+    const D3D12_RENDER_TARGET_BLEND_DESC defaultRenderTargetBlendDesc = {
+        TRUE, FALSE,
+        D3D12_BLEND_SRC_ALPHA, D3D12_BLEND_INV_SRC_ALPHA, D3D12_BLEND_OP_ADD,
+        D3D12_BLEND_ZERO, D3D12_BLEND_ZERO, D3D12_BLEND_OP_ADD,
+        D3D12_LOGIC_OP_NOOP,
+        D3D12_COLOR_WRITE_ENABLE_ALL
+    };
+    D3D12_BLEND_DESC blendDesc = {};
+    blendDesc.RenderTarget[0] = defaultRenderTargetBlendDesc;
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
+    psoDesc.pRootSignature = rootSignature.Get();
+    psoDesc.VS = vshader;
+    psoDesc.PS = pshader;
+    psoDesc.RasterizerState = rastDesc;
+    psoDesc.BlendState = blendDesc;
+    psoDesc.DepthStencilState.DepthEnable = TRUE;
+    psoDesc.DepthStencilState.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
+    psoDesc.DepthStencilState.DepthFunc = D3D12_COMPARISON_FUNC_LESS;
+    psoDesc.DepthStencilState.StencilEnable = FALSE;
+    psoDesc.SampleMask = UINT_MAX;
+    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+    psoDesc.NumRenderTargets = 1;
+    psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
+    psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT;
+    psoDesc.SampleDesc.Count = 1;
+    if (FAILED(dev->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&pipelineState)))) {
+        qWarning("Failed to create graphics pipeline state");
+        return;
+    }
+
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR, IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+
+    // Vertex buffer
+    const float vertices[] = {
+        -0.5f, -0.5f, 0, /* coords */ 0, 1, // the image was not flipped so accommodate for it here
+        0.5f, -0.5f, 0,               1, 1,
+        -0.5f, 0.5f, 0,               0, 0,
+
+        -0.5f, 0.5f, 0,               0, 0,
+        0.5f, -0.5f, 0,               1, 1,
+        0.5f, 0.5f, 0,                1, 0
+    };
+    const UINT vertexBufferSize = sizeof(vertices);
+
+    D3D12_HEAP_PROPERTIES defaultHeapProp = {};
+    defaultHeapProp.Type = D3D12_HEAP_TYPE_DEFAULT;
+    D3D12_HEAP_PROPERTIES uploadHeapProp = defaultHeapProp;
+    uploadHeapProp.Type = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC bufDesc = {};
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Width = vertexBufferSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&vertexBuffer)))) {
+        qWarning("Failed to create committed resource (vertex buffer)");
+        return;
+    }
+
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(vertexBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (vertex buffer)");
+        return;
+    }
+    memcpy(p, vertices, vertexBufferSize);
+    vertexBuffer->Unmap(0, Q_NULLPTR);
+
+    vertexBufferView.BufferLocation = vertexBuffer->GetGPUVirtualAddress();
+    vertexBufferView.StrideInBytes = (3 + 2) * sizeof(float);
+    vertexBufferView.SizeInBytes = vertexBufferSize;
+
+    // Constant buffer
+    const UINT CB_SIZE = alignedCBSize(128); // 2 * float4x4
+    bufDesc.Width = CB_SIZE;
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&constantBuffer)))) {
+        qWarning("Failed to create committed resource (constant buffer)");
+        return;
+    }
+
+    if (FAILED(constantBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (constant buffer)");
+        return;
+    }
+    cbPtr = p; // won't Unmap() this here
+
+    // Constant buffer view and shader resource view descriptors are stored in the same heap.
+    cbvSrvUavStride = dev->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
+    D3D12_DESCRIPTOR_HEAP_DESC cbvSrvUavHeapDesc = {};
+    // CBV + SRV + (TEXTURE_MIP_LEVELS - 1) * UAV
+    cbvSrvUavHeapDesc.NumDescriptors = 1 + 1 + (TEXTURE_MIP_LEVELS - 1);
+    cbvSrvUavHeapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
+    cbvSrvUavHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
+    if (FAILED(dev->CreateDescriptorHeap(&cbvSrvUavHeapDesc, IID_PPV_ARGS(&cbvSrvUavHeap)))) {
+        qWarning("Failed to create CBV/SRV/UAV descriptor heap");
+        return;
+    }
+
+    // CBV for the pixel shader
+    D3D12_CPU_DESCRIPTOR_HANDLE cbvSrvUavHandle = cbvSrvUavHeap->GetCPUDescriptorHandleForHeapStart();
+    D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {};
+    cbvDesc.BufferLocation = constantBuffer->GetGPUVirtualAddress();
+    cbvDesc.SizeInBytes = CB_SIZE;
+    dev->CreateConstantBufferView(&cbvDesc, cbvSrvUavHandle);
+    cbvSrvUavHandle.ptr += cbvSrvUavStride;
+
+    // Texture (with mipmaps and allowing read/write via UAVs)
+    D3D12_RESOURCE_DESC textureDesc = {};
+    textureDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
+    textureDesc.Width = TEXTURE_WIDTH;
+    textureDesc.Height = TEXTURE_HEIGHT;
+    textureDesc.DepthOrArraySize = 1;
+    textureDesc.MipLevels = TEXTURE_MIP_LEVELS;
+    textureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    textureDesc.SampleDesc.Count = 1;
+    textureDesc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
+    textureDesc.Flags = D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS;
+
+    if (FAILED(dev->CreateCommittedResource(&defaultHeapProp, D3D12_HEAP_FLAG_NONE, &textureDesc,
+                                            D3D12_RESOURCE_STATE_COPY_DEST, Q_NULLPTR, IID_PPV_ARGS(&texture)))) {
+        qWarning("Failed to create texture resource");
+        return;
+    }
+
+    // Shader resource view for exposing the texture to the compute and pixel shaders
+    D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {};
+    srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
+    srvDesc.Format = textureDesc.Format;
+    srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
+    srvDesc.Texture2D.MipLevels = TEXTURE_MIP_LEVELS;
+    dev->CreateShaderResourceView(texture.Get(), &srvDesc, cbvSrvUavHandle);
+    cbvSrvUavHandle.ptr += cbvSrvUavStride;
+
+    // Mipmap generation will need an UAV for each level that needs to be generated.
+    for (int level = 1; level < TEXTURE_MIP_LEVELS; ++level) {
+        D3D12_UNORDERED_ACCESS_VIEW_DESC uavDesc = {};
+        uavDesc.Format = textureDesc.Format;
+        uavDesc.ViewDimension = D3D12_UAV_DIMENSION_TEXTURE2D;
+        uavDesc.Texture2D.MipSlice = level;
+        dev->CreateUnorderedAccessView(texture.Get(), Q_NULLPTR, &uavDesc, cbvSrvUavHandle);
+        cbvSrvUavHandle.ptr += cbvSrvUavStride;
+    }
+
+    ComPtr<ID3D12Resource> textureUploadBuffer;
+    UINT64 textureUploadBufferSize;
+    D3D12_PLACED_SUBRESOURCE_FOOTPRINT textureLayout;
+    dev->GetCopyableFootprints(&textureDesc, 0, 1, 0, &textureLayout, Q_NULLPTR, Q_NULLPTR, &textureUploadBufferSize);
+    bufDesc.Width = textureUploadBufferSize;
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&textureUploadBuffer)))) {
+        qWarning("Failed to create texture upload buffer resource");
+        return;
+    }
+
+    // Unlike hellotexture, upload only level 0. Leave the rest to a compute shader.
+    if (FAILED(textureUploadBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (texture upload buffer)");
+        return;
+    }
+    p += textureLayout.Offset;
+    for (int y = 0; y < TEXTURE_HEIGHT; ++y) {
+        memcpy(p, qtLogo.scanLine(y), TEXTURE_WIDTH * 4);
+        p += textureLayout.Footprint.RowPitch;
+    }
+    textureUploadBuffer->Unmap(0, Q_NULLPTR);
+
+    D3D12_TEXTURE_COPY_LOCATION dstLoc;
+    dstLoc.pResource = texture.Get();
+    dstLoc.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
+    dstLoc.SubresourceIndex = 0;
+    D3D12_TEXTURE_COPY_LOCATION srcLoc;
+    srcLoc.pResource = textureUploadBuffer.Get();
+    srcLoc.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
+    srcLoc.PlacedFootprint = textureLayout;
+    commandList->CopyTextureRegion(&dstLoc, 0, 0, 0, &srcLoc, Q_NULLPTR);
+
+    // once the copy is done, the texture is ready to be used in the compute shader...
+    transitionResource(texture.Get(), commandList.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_UNORDERED_ACCESS);
+    uavBarrier(texture.Get(), commandList.Get());
+
+    initMipMaps();
+    generateMipMaps();
+
+    // ...and then in the pixel shader
+    uavBarrier(texture.Get(), commandList.Get());
+    transitionResource(texture.Get(), commandList.Get(), D3D12_RESOURCE_STATE_UNORDERED_ACCESS, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);
+
+    // Execute the texture upload and mipmap generation.
+    commandList->Close();
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    // Block until all the above has finished.
+    waitForGPU(f);
+
+    setupProjection();
+}
+
+void Window::initMipMaps()
+{
+    ID3D12Device *dev = device();
+
+    D3D12_STATIC_SAMPLER_DESC sampler = {};
+    sampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
+    sampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.MinLOD = 0.0f;
+    sampler.MaxLOD = D3D12_FLOAT32_MAX;
+
+    D3D12_DESCRIPTOR_RANGE descRange[2];
+    descRange[0].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
+    descRange[0].NumDescriptors = 1;
+    descRange[0].BaseShaderRegister = 0; // t0
+    descRange[0].RegisterSpace = 0;
+    descRange[0].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+    descRange[1].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_UAV;
+    descRange[1].NumDescriptors = 4;
+    descRange[1].BaseShaderRegister = 0; // u0..u3
+    descRange[1].RegisterSpace = 0;
+    descRange[1].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+
+    // Split into two to allow switching between the first and second set of UAVs later.
+    D3D12_ROOT_PARAMETER rootParameters[3];
+    rootParameters[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+    rootParameters[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
+    rootParameters[0].DescriptorTable.NumDescriptorRanges = 1;
+    rootParameters[0].DescriptorTable.pDescriptorRanges = &descRange[0];
+
+    rootParameters[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+    rootParameters[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
+    rootParameters[1].DescriptorTable.NumDescriptorRanges = 1;
+    rootParameters[1].DescriptorTable.pDescriptorRanges = &descRange[1];
+
+    rootParameters[2].ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;
+    rootParameters[2].ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
+    rootParameters[2].Constants.Num32BitValues = 4; // uint2 mip1Size, uint sampleLevel, uint totalMips
+    rootParameters[2].Constants.ShaderRegister = 0; // b0
+    rootParameters[2].Constants.RegisterSpace = 0;
+
+    D3D12_ROOT_SIGNATURE_DESC desc = {};
+    desc.NumParameters = 3;
+    desc.pParameters = rootParameters;
+    desc.NumStaticSamplers = 1;
+    desc.pStaticSamplers = &sampler;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        QByteArray msg(static_cast<const char *>(error->GetBufferPointer()), error->GetBufferSize());
+        qWarning("Failed to serialize compute root signature: %s", qPrintable(msg));
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(),
+                                        IID_PPV_ARGS(&computeRootSignature)))) {
+        qWarning("Failed to create compute root signature");
+        return;
+    }
+
+    D3D12_COMPUTE_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.pRootSignature = computeRootSignature.Get();
+    psoDesc.CS.pShaderBytecode = g_CS_Generate4MipMaps;
+    psoDesc.CS.BytecodeLength = sizeof(g_CS_Generate4MipMaps);
+
+    if (FAILED(dev->CreateComputePipelineState(&psoDesc, IID_PPV_ARGS(&computeState)))) {
+        qWarning("Failed to create compute pipeline state");
+        return;
+    }
+}
+
+void Window::generateMipMaps()
+{
+    commandList->SetPipelineState(computeState.Get());
+    commandList->SetComputeRootSignature(computeRootSignature.Get());
+
+    ID3D12DescriptorHeap *heaps[] = { cbvSrvUavHeap.Get() };
+    commandList->SetDescriptorHeaps(_countof(heaps), heaps);
+
+    D3D12_GPU_DESCRIPTOR_HANDLE h = cbvSrvUavHeap->GetGPUDescriptorHandleForHeapStart(); // CBV, not needed here
+    h.ptr += cbvSrvUavStride; // SRV
+    commandList->SetComputeRootDescriptorTable(0, h);
+
+    h.ptr += cbvSrvUavStride; // now points to the first of (TEXTURE_MIP_LEVELS - 1) UAV descriptors
+
+    for (quint32 level = 1; level < TEXTURE_MIP_LEVELS; level += 4, h.ptr += cbvSrvUavStride * 4) {
+        commandList->SetComputeRootDescriptorTable(1, h);
+
+        QSize sz(TEXTURE_WIDTH, TEXTURE_HEIGHT);
+        sz.setWidth(qMax(1, sz.width() >> level));
+        sz.setHeight(qMax(1, sz.height() >> level));
+
+        const quint32 constants[4] = { quint32(sz.width()), quint32(sz.height()),
+                                       level - 1,
+                                       TEXTURE_MIP_LEVELS - 1 };
+        commandList->SetComputeRoot32BitConstants(2, 4, constants, 0);
+
+        commandList->Dispatch(sz.width(), sz.height(), 1);
+    }
+}
+
+void Window::resizeD3D(const QSize &)
+{
+    setupProjection();
+}
+
+void Window::setupProjection()
+{
+    projection.setToIdentity();
+    projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::paintD3D()
+{
+    modelview.setToIdentity();
+    modelview.translate(0, 0, -2);
+    // our highly sophisticated animation
+    modelview.rotate(rotationAngle, 0, 0, 1);
+    rotationAngle += 1;
+
+    memcpy(cbPtr, modelview.constData(), 16 * sizeof(float));
+    memcpy(cbPtr + 16 * sizeof(float), projection.constData(), 16 * sizeof(float));
+
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), pipelineState.Get());
+
+    commandList->SetGraphicsRootSignature(rootSignature.Get());
+
+    ID3D12DescriptorHeap *heaps[] = { cbvSrvUavHeap.Get() };
+    commandList->SetDescriptorHeaps(_countof(heaps), heaps);
+    commandList->SetGraphicsRootDescriptorTable(0, cbvSrvUavHeap->GetGPUDescriptorHandleForHeapStart());
+
+    D3D12_VIEWPORT viewport = { 0, 0, float(width()), float(height()), 0, 1 };
+    commandList->RSSetViewports(1, &viewport);
+    D3D12_RECT scissorRect = { 0, 0, width() - 1, height() - 1 };
+    commandList->RSSetScissorRects(1, &scissorRect);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = backBufferRenderTargetCPUHandle();
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = depthStencilCPUHandle();
+    commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
+
+    const float clearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
+    commandList->ClearRenderTargetView(rtvHandle, clearColor, 0, Q_NULLPTR);
+    commandList->ClearDepthStencilView(dsvHandle, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, Q_NULLPTR);
+
+    commandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    commandList->IASetVertexBuffers(0, 1, &vertexBufferView);
+    commandList->DrawInstanced(6, 1, 0, 0);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT);
+
+    commandList->Close();
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update();
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f);
+}
diff --git a/examples/hellogpumipmap/window.h b/examples/hellogpumipmap/window.h
new file mode 100644
index 0000000..db3c4ea
--- /dev/null
+++ b/examples/hellogpumipmap/window.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+#include <QMatrix4x4>
+
+class Window : public QD3D12Window
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+private:
+    void setupProjection();
+    void initMipMaps();
+    void generateMipMaps();
+
+    Fence *f;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    ComPtr<ID3D12PipelineState> pipelineState;
+    ComPtr<ID3D12RootSignature> rootSignature;
+    ComPtr<ID3D12Resource> vertexBuffer;
+    ComPtr<ID3D12Resource> constantBuffer;
+    ComPtr<ID3D12Resource> texture;
+    ComPtr<ID3D12DescriptorHeap> cbvSrvUavHeap;
+    UINT cbvSrvUavStride;
+    D3D12_VERTEX_BUFFER_VIEW vertexBufferView;
+
+    ComPtr<ID3D12PipelineState> computeState;
+    ComPtr<ID3D12RootSignature> computeRootSignature;
+
+    QMatrix4x4 projection;
+    QMatrix4x4 modelview;
+    quint8 *cbPtr;
+    float rotationAngle;
+};
diff --git a/examples/hellomultisample/hellomultisample.pro b/examples/hellomultisample/hellomultisample.pro
new file mode 100644
index 0000000..0d36378
--- /dev/null
+++ b/examples/hellomultisample/hellomultisample.pro
@@ -0,0 +1,22 @@
+TEMPLATE = app
+QT += d3d12window widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+
+LIBS = -ld3d12
+
+VSPS = shader.hlsl
+
+vshader.input = VSPS
+vshader.header = shader_vs.h
+vshader.entry = VS_Simple
+vshader.type = vs_5_0
+
+pshader.input = VSPS
+pshader.header = shader_ps.h
+pshader.entry = PS_Simple
+pshader.type = ps_5_0
+
+HLSL_SHADERS = vshader pshader
+load(hlsl)
diff --git a/examples/hellomultisample/main.cpp b/examples/hellomultisample/main.cpp
new file mode 100644
index 0000000..4c9c255
--- /dev/null
+++ b/examples/hellomultisample/main.cpp
@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QWidget>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QGroupBox>
+#include <QLabel>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *d3dw = new Window;
+    QWidget w;
+
+    QGroupBox *gb = new QGroupBox("A triangle again", &w);
+    QVBoxLayout *vl = new QVBoxLayout;
+    vl->addWidget(new QPushButton("Widgets + a native child window with D3D12"));
+    vl->addWidget(gb);
+    QVBoxLayout *gbl = new QVBoxLayout;
+    gbl->addWidget(new QLabel("but this time rendered into a 4x MSAA buffer first"));
+    QWidget *ww = QWidget::createWindowContainer(d3dw);
+    ww->setMinimumHeight(300);
+    gbl->addWidget(ww);
+    gbl->setStretchFactor(ww, 1.0);
+    gb->setLayout(gbl);
+
+    w.setLayout(vl);
+    w.resize(400, 400);
+    w.show();
+
+    return app.exec();
+}
diff --git a/examples/hellomultisample/shader.hlsl b/examples/hellomultisample/shader.hlsl
new file mode 100644
index 0000000..8b9b9ff
--- /dev/null
+++ b/examples/hellomultisample/shader.hlsl
@@ -0,0 +1,27 @@
+cbuffer ConstantBuffer : register(b0)
+{
+        float4x4 modelview;
+        float4x4 projection;
+};
+
+struct PSInput
+{
+        float4 position : SV_POSITION;
+        float4 color : COLOR;
+};
+
+PSInput VS_Simple(float4 position : POSITION, float4 color : COLOR)
+{
+        PSInput result;
+
+        float4x4 mvp = mul(projection, modelview);
+        result.position = mul(mvp, position);
+        result.color = color;
+
+        return result;
+}
+
+float4 PS_Simple(PSInput input) : SV_TARGET
+{
+        return input.color;
+}
diff --git a/examples/hellomultisample/window.cpp b/examples/hellomultisample/window.cpp
new file mode 100644
index 0000000..d2d6350
--- /dev/null
+++ b/examples/hellomultisample/window.cpp
@@ -0,0 +1,274 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include "shader_vs.h"
+#include "shader_ps.h"
+
+static const int OFFSCREEN_SAMPLES = 4;
+
+static const float offscreenClearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
+
+Window::Window()
+    : f(Q_NULLPTR),
+      cbPtr(Q_NULLPTR),
+      rotationAngle(0)
+{
+    setExtraRenderTargetCount(1);
+}
+
+Window::~Window()
+{
+    if (cbPtr)
+        constantBuffer->Unmap(0, Q_NULLPTR);
+
+    delete f;
+}
+
+void Window::setupOffscreenWithMatchingSize()
+{
+    msaaRT = Q_NULLPTR;
+    msaaDS = Q_NULLPTR;
+    msaaRT.Attach(createExtraRenderTargetAndView(extraRenderTargetCPUHandle(0), size(), offscreenClearColor, OFFSCREEN_SAMPLES));
+    msaaDS.Attach(createExtraDepthStencilAndView(extraDepthStencilCPUHandle(0), size(), OFFSCREEN_SAMPLES));
+
+    projection.setToIdentity();
+    projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::initializeD3D()
+{
+    f = createFence();
+    ID3D12Device *dev = device();
+
+    setupOffscreenWithMatchingSize();
+
+    D3D12_ROOT_PARAMETER rootParameter;
+    rootParameter.ParameterType = D3D12_ROOT_PARAMETER_TYPE_CBV;
+    rootParameter.ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
+    rootParameter.Descriptor.ShaderRegister = 0; // b0
+    rootParameter.Descriptor.RegisterSpace = 0;
+
+    D3D12_ROOT_SIGNATURE_DESC desc;
+    desc.NumParameters = 1;
+    desc.pParameters = &rootParameter;
+    desc.NumStaticSamplers = 0;
+    desc.pStaticSamplers = Q_NULLPTR;
+    desc.Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        qWarning("Failed to serialize root signature");
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&rootSignature)))) {
+        qWarning("Failed to create root signature");
+        return;
+    }
+
+    D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
+    };
+
+    D3D12_SHADER_BYTECODE vshader;
+    vshader.pShaderBytecode = g_VS_Simple;
+    vshader.BytecodeLength = sizeof(g_VS_Simple);
+    D3D12_SHADER_BYTECODE pshader;
+    pshader.pShaderBytecode = g_PS_Simple;
+    pshader.BytecodeLength = sizeof(g_PS_Simple);
+
+    D3D12_RASTERIZER_DESC rastDesc = {};
+    rastDesc.FillMode = D3D12_FILL_MODE_SOLID;
+    rastDesc.CullMode = D3D12_CULL_MODE_BACK;
+    rastDesc.FrontCounterClockwise = TRUE; // Vertices are given CCW
+    rastDesc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
+    rastDesc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
+    rastDesc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
+    rastDesc.DepthClipEnable = TRUE;
+
+    // No blending, just enable color write.
+    D3D12_RENDER_TARGET_BLEND_DESC defaultRenderTargetBlendDesc = {};
+    defaultRenderTargetBlendDesc.RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
+    D3D12_BLEND_DESC blendDesc = {};
+    blendDesc.RenderTarget[0] = defaultRenderTargetBlendDesc;
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
+    psoDesc.pRootSignature = rootSignature.Get();
+    psoDesc.VS = vshader;
+    psoDesc.PS = pshader;
+    psoDesc.RasterizerState = rastDesc;
+    psoDesc.BlendState = blendDesc;
+    psoDesc.DepthStencilState.DepthEnable = TRUE;
+    psoDesc.DepthStencilState.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
+    psoDesc.DepthStencilState.DepthFunc = D3D12_COMPARISON_FUNC_LESS;
+    psoDesc.DepthStencilState.StencilEnable = FALSE;
+    psoDesc.SampleMask = UINT_MAX;
+    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+    psoDesc.NumRenderTargets = 1;
+    psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
+    psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT;
+    psoDesc.SampleDesc = msaaRT->GetDesc().SampleDesc; // use multisampling
+    if (FAILED(dev->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&pipelineState)))) {
+        qWarning("Failed to create graphics pipeline state");
+        return;
+    }
+
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR, IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+    commandList->Close();
+
+    const float vertices[] = {
+        0.0f, 0.707f, 0.0f, /* color */ 1.0f, 0.0f, 0.0f, 1.0f,
+        -0.5f, -0.5f, 0.0f,             0.0f, 1.0f, 0.0f, 1.0f,
+        0.5f, -0.5f, 0.0f,              0.0f, 0.0f, 1.0f, 1.0f
+    };
+    const UINT vertexBufferSize = sizeof(vertices);
+
+    D3D12_HEAP_PROPERTIES heapProp = {};
+    heapProp.Type = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC bufDesc;
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Alignment = 0;
+    bufDesc.Width = vertexBufferSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.SampleDesc.Quality = 0;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+    bufDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
+
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&vertexBuffer)))) {
+        qWarning("Failed to create committed resource (vertex buffer)");
+        return;
+    }
+
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(vertexBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed");
+        return;
+    }
+    memcpy(p, vertices, vertexBufferSize);
+    vertexBuffer->Unmap(0, Q_NULLPTR);
+
+    vertexBufferView.BufferLocation = vertexBuffer->GetGPUVirtualAddress();
+    vertexBufferView.StrideInBytes = (3 + 4) * sizeof(float);
+    vertexBufferView.SizeInBytes = vertexBufferSize;
+
+    const UINT CB_SIZE = alignedCBSize(128); // 2 * float4x4
+    bufDesc.Width = CB_SIZE;
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&constantBuffer)))) {
+        qWarning("Failed to create committed resource (constant buffer)");
+        return;
+    }
+
+    if (FAILED(constantBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (constant buffer)");
+        return;
+    }
+    cbPtr = p;
+}
+
+void Window::resizeD3D(const QSize &)
+{
+    setupOffscreenWithMatchingSize();
+}
+
+void Window::paintD3D()
+{
+    modelview.setToIdentity();
+    modelview.translate(0, 0, -2);
+    // our highly sophisticated animation
+    modelview.rotate(rotationAngle, 0, 0, 1);
+    rotationAngle += 1;
+
+    memcpy(cbPtr, modelview.constData(), 16 * sizeof(float));
+    memcpy(cbPtr + 16 * sizeof(float), projection.constData(), 16 * sizeof(float));
+
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), pipelineState.Get());
+
+    commandList->SetGraphicsRootSignature(rootSignature.Get());
+
+    commandList->SetGraphicsRootConstantBufferView(0, constantBuffer->GetGPUVirtualAddress());
+
+    D3D12_VIEWPORT viewport = { 0, 0, float(width()), float(height()), 0, 1 };
+    commandList->RSSetViewports(1, &viewport);
+    D3D12_RECT scissorRect = { 0, 0, width() - 1, height() - 1 };
+    commandList->RSSetScissorRects(1, &scissorRect);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = extraRenderTargetCPUHandle(0);
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = extraDepthStencilCPUHandle(0);
+    commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
+
+    commandList->ClearRenderTargetView(rtvHandle, offscreenClearColor, 0, Q_NULLPTR);
+    commandList->ClearDepthStencilView(dsvHandle, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, Q_NULLPTR);
+
+    commandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    commandList->IASetVertexBuffers(0, 1, &vertexBufferView);
+    commandList->DrawInstanced(3, 1, 0, 0);
+
+    transitionResource(msaaRT.Get(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_RESOLVE_SOURCE);
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RESOLVE_DEST);
+    commandList->ResolveSubresource(backBufferRenderTarget(), 0, msaaRT.Get(), 0, DXGI_FORMAT_R8G8B8A8_UNORM);
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RESOLVE_DEST, D3D12_RESOURCE_STATE_PRESENT);
+    transitionResource(msaaRT.Get(), commandList.Get(), D3D12_RESOURCE_STATE_RESOLVE_SOURCE, D3D12_RESOURCE_STATE_RENDER_TARGET);
+    commandList->Close();
+
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update();
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f);
+}
diff --git a/examples/hellomultisample/window.h b/examples/hellomultisample/window.h
new file mode 100644
index 0000000..4c0c544
--- /dev/null
+++ b/examples/hellomultisample/window.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+#include <QMatrix4x4>
+
+class Window : public QD3D12Window
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+private:
+    void setupOffscreenWithMatchingSize();
+
+    Fence *f;
+    ComPtr<ID3D12Resource> msaaRT;
+    ComPtr<ID3D12Resource> msaaDS;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    ComPtr<ID3D12PipelineState> pipelineState;
+    ComPtr<ID3D12RootSignature> rootSignature;
+    ComPtr<ID3D12Resource> vertexBuffer;
+    ComPtr<ID3D12Resource> constantBuffer;
+    D3D12_VERTEX_BUFFER_VIEW vertexBufferView;
+
+    QMatrix4x4 projection;
+    QMatrix4x4 modelview;
+    quint8 *cbPtr;
+    float rotationAngle;
+};
diff --git a/examples/hellooffscreen/hellooffscreen.pro b/examples/hellooffscreen/hellooffscreen.pro
new file mode 100644
index 0000000..809e618
--- /dev/null
+++ b/examples/hellooffscreen/hellooffscreen.pro
@@ -0,0 +1,32 @@
+TEMPLATE = app
+QT += d3d12window widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+
+LIBS = -ld3d12
+
+VSPS = shader.hlsl
+
+vshader1.input = VSPS
+vshader1.header = shader_vs_off.h
+vshader1.entry = VS_Offscreen
+vshader1.type = vs_5_0
+
+pshader1.input = VSPS
+pshader1.header = shader_ps_off.h
+pshader1.entry = PS_Offscreen
+pshader1.type = ps_5_0
+
+vshader2.input = VSPS
+vshader2.header = shader_vs_on.h
+vshader2.entry = VS_Onscreen
+vshader2.type = vs_5_0
+
+pshader2.input = VSPS
+pshader2.header = shader_ps_on.h
+pshader2.entry = PS_Onscreen
+pshader2.type = ps_5_0
+
+HLSL_SHADERS = vshader1 pshader1 vshader2 pshader2
+load(hlsl)
diff --git a/examples/hellooffscreen/main.cpp b/examples/hellooffscreen/main.cpp
new file mode 100644
index 0000000..00827b2
--- /dev/null
+++ b/examples/hellooffscreen/main.cpp
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QMainWindow>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QMenuBar>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *d3dw = new Window;
+    QMainWindow mw;
+    QWidget *w = new QWidget;
+    QVBoxLayout *vl = new QVBoxLayout;
+    vl->addWidget(new QPushButton("Widgets + a native child window with D3D12"));
+    vl->addWidget(new QLabel("Offscreen rendering to a render target that is then used as a texture.\nNow with bundles!"));
+    QWidget *ww = QWidget::createWindowContainer(d3dw);
+    ww->setMinimumHeight(300);
+    vl->addWidget(ww);
+    vl->setStretchFactor(ww, 1.0);
+    w->setLayout(vl);
+
+    QMenu *fileMenu = mw.menuBar()->addMenu("&File");
+    fileMenu->addAction("&Save image", d3dw, &Window::readbackAndSave);
+    fileMenu->addAction("E&xit", &app, &QApplication::quit);
+
+    mw.setCentralWidget(w);
+    mw.resize(400, 400);
+    mw.show();
+
+    return app.exec();
+}
diff --git a/examples/hellooffscreen/shader.hlsl b/examples/hellooffscreen/shader.hlsl
new file mode 100644
index 0000000..c626447
--- /dev/null
+++ b/examples/hellooffscreen/shader.hlsl
@@ -0,0 +1,52 @@
+cbuffer ConstantBuffer : register(b0)
+{
+        float4x4 modelview;
+        float4x4 projection;
+};
+
+struct PSInput
+{
+        float4 position : SV_POSITION;
+        float4 color : COLOR;
+};
+
+PSInput VS_Offscreen(float4 position : POSITION, float4 color : COLOR)
+{
+        PSInput result;
+
+        float4x4 mvp = mul(projection, modelview);
+        result.position = mul(mvp, position);
+        result.color = color;
+
+        return result;
+}
+
+float4 PS_Offscreen(PSInput input) : SV_TARGET
+{
+        return input.color;
+}
+
+struct PSInput2
+{
+        float4 position : SV_POSITION;
+        float2 coord : TEXCOORD0;
+};
+
+PSInput2 VS_Onscreen(float4 position : POSITION, float2 coord : TEXCOORD0)
+{
+        PSInput2 result;
+
+        float4x4 mvp = mul(projection, modelview);
+        result.position = mul(mvp, position);
+        result.coord = coord;
+
+        return result;
+}
+
+Texture2D tex : register(t0);
+SamplerState samp : register(s0);
+
+float4 PS_Onscreen(PSInput2 input) : SV_TARGET
+{
+        return tex.Sample(samp, input.coord);
+}
diff --git a/examples/hellooffscreen/window.cpp b/examples/hellooffscreen/window.cpp
new file mode 100644
index 0000000..3dbe583
--- /dev/null
+++ b/examples/hellooffscreen/window.cpp
@@ -0,0 +1,541 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include "shader_vs_off.h"
+#include "shader_ps_off.h"
+#include "shader_vs_on.h"
+#include "shader_ps_on.h"
+#include <QFileDialog>
+#include <QMessageBox>
+
+static const int OFFSCREEN_WIDTH = 512;
+static const int OFFSCREEN_HEIGHT = 512;
+
+static const float offscreenClearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
+static const float onscreenClearColor[] = { 0.4f, 0.5f, 0.5f, 1.0f };
+
+Window::Window()
+    : f(Q_NULLPTR)
+{
+    setExtraRenderTargetCount(1);
+}
+
+Window::~Window()
+{
+    if (offscreen.cbPtr)
+        offscreen.constantBuffer->Unmap(0, Q_NULLPTR);
+    if (onscreen.cbPtr)
+        onscreen.constantBuffer->Unmap(0, Q_NULLPTR);
+
+    delete f;
+}
+
+void Window::initializeD3D()
+{
+    f = createFence();
+    ID3D12Device *dev = device();
+
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR, IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+    commandList->Close(); // created in recording state, close it for now
+
+    D3D12_DESCRIPTOR_HEAP_DESC cbvHeapDesc = {};
+    cbvHeapDesc.NumDescriptors = 1;
+    cbvHeapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
+    cbvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
+    if (FAILED(dev->CreateDescriptorHeap(&cbvHeapDesc, IID_PPV_ARGS(&cbvSrvHeap)))) {
+        qWarning("Failed to create CBV/SRV/UAV descriptor heap");
+        return;
+    }
+
+    initializeOffscreen();
+    initializeOnscreen();
+}
+
+static inline D3D12_GRAPHICS_PIPELINE_STATE_DESC pso()
+{
+    D3D12_RASTERIZER_DESC rastDesc = {};
+    rastDesc.FillMode = D3D12_FILL_MODE_SOLID;
+    rastDesc.CullMode = D3D12_CULL_MODE_BACK;
+    rastDesc.FrontCounterClockwise = TRUE;
+    rastDesc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
+    rastDesc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
+    rastDesc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
+    rastDesc.DepthClipEnable = TRUE;
+
+    // No blending, just enable color write.
+    D3D12_RENDER_TARGET_BLEND_DESC defaultRenderTargetBlendDesc = {};
+    defaultRenderTargetBlendDesc.RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
+    D3D12_BLEND_DESC blendDesc = {};
+    blendDesc.RenderTarget[0] = defaultRenderTargetBlendDesc;
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.RasterizerState = rastDesc;
+    psoDesc.BlendState = blendDesc;
+    psoDesc.DepthStencilState.DepthEnable = TRUE;
+    psoDesc.DepthStencilState.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
+    psoDesc.DepthStencilState.DepthFunc = D3D12_COMPARISON_FUNC_LESS;
+    psoDesc.DepthStencilState.StencilEnable = FALSE;
+    psoDesc.SampleMask = UINT_MAX;
+    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+    psoDesc.NumRenderTargets = 1;
+    psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
+    psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT;
+    psoDesc.SampleDesc.Count = 1;
+
+    return psoDesc;
+}
+
+void Window::initializeOffscreen()
+{
+    ID3D12Device *dev = device();
+
+    // Create an offscreen render target of size 512x512. Pass the clear color to avoid performance warnings.
+    // Have a depth-stencil buffer as well with the matching size.
+    QSize sz(OFFSCREEN_WIDTH, OFFSCREEN_HEIGHT);
+    offscreen.rt.Attach(createExtraRenderTargetAndView(extraRenderTargetCPUHandle(0), sz, offscreenClearColor));
+    offscreen.ds.Attach(createExtraDepthStencilAndView(extraDepthStencilCPUHandle(0), sz));
+
+    D3D12_ROOT_PARAMETER rootParameter;
+    rootParameter.ParameterType = D3D12_ROOT_PARAMETER_TYPE_CBV;
+    rootParameter.ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
+    rootParameter.Descriptor.ShaderRegister = 0; // b0
+    rootParameter.Descriptor.RegisterSpace = 0;
+
+    D3D12_ROOT_SIGNATURE_DESC desc;
+    desc.NumParameters = 1;
+    desc.pParameters = &rootParameter;
+    desc.NumStaticSamplers = 0;
+    desc.pStaticSamplers = Q_NULLPTR;
+    desc.Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        qWarning("Failed to serialize root signature");
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(),
+                                        IID_PPV_ARGS(&offscreen.rootSignature)))) {
+        qWarning("Failed to create root signature");
+        return;
+    }
+
+    const D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
+    };
+
+    D3D12_SHADER_BYTECODE vshader;
+    vshader.pShaderBytecode = g_VS_Offscreen;
+    vshader.BytecodeLength = sizeof(g_VS_Offscreen);
+    D3D12_SHADER_BYTECODE pshader;
+    pshader.pShaderBytecode = g_PS_Offscreen;
+    pshader.BytecodeLength = sizeof(g_PS_Offscreen);
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = pso();
+    psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
+    psoDesc.pRootSignature = offscreen.rootSignature.Get();
+    psoDesc.VS = vshader;
+    psoDesc.PS = pshader;
+
+    if (FAILED(dev->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&offscreen.pipelineState)))) {
+        qWarning("Failed to create graphics pipeline state");
+        return;
+    }
+
+    const float vertices[] = {
+        0.0f, 0.707f, 0.0f, /* color */ 1.0f, 0.0f, 0.0f, 1.0f,
+        -0.5f, -0.5f, 0.0f,             0.0f, 1.0f, 0.0f, 1.0f,
+        0.5f, -0.5f, 0.0f,              0.0f, 0.0f, 1.0f, 1.0f
+    };
+    const UINT vertexBufferSize = sizeof(vertices);
+
+    D3D12_HEAP_PROPERTIES heapProp = {};
+    heapProp.Type = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC bufDesc = {};
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Width = vertexBufferSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR,
+                                            IID_PPV_ARGS(&offscreen.vertexBuffer)))) {
+        qWarning("Failed to create committed resource (vertex buffer for triangle)");
+        return;
+    }
+
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(offscreen.vertexBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (vertex buffer for triangle)");
+        return;
+    }
+    memcpy(p, vertices, vertexBufferSize);
+    offscreen.vertexBuffer->Unmap(0, Q_NULLPTR);
+
+    offscreen.vertexBufferView.BufferLocation = offscreen.vertexBuffer->GetGPUVirtualAddress();
+    offscreen.vertexBufferView.StrideInBytes = (3 + 4) * sizeof(float);
+    offscreen.vertexBufferView.SizeInBytes = vertexBufferSize;
+
+    const UINT CB_SIZE = alignedCBSize(128); // 2 * float4x4
+    bufDesc.Width = CB_SIZE;
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR,
+                                            IID_PPV_ARGS(&offscreen.constantBuffer)))) {
+        qWarning("Failed to create committed resource (constant buffer for triangle)");
+        return;
+    }
+
+    if (FAILED(offscreen.constantBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (constant buffer for triangle)");
+        return;
+    }
+    offscreen.cbPtr = p;
+
+    offscreen.projection.perspective(60.0f, OFFSCREEN_WIDTH / float(OFFSCREEN_HEIGHT), 0.1f, 100.0f);
+
+    // Create a bundle for drawing a triangle.
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_BUNDLE, bundleAllocator(), Q_NULLPTR, IID_PPV_ARGS(&offscreen.bundle)))) {
+        qWarning("Failed to create offscreen command bundle");
+        return;
+    }
+    offscreen.bundle->SetPipelineState(offscreen.pipelineState.Get());
+    offscreen.bundle->SetGraphicsRootSignature(offscreen.rootSignature.Get());
+    offscreen.bundle->SetGraphicsRootConstantBufferView(0, offscreen.constantBuffer->GetGPUVirtualAddress());
+    offscreen.bundle->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    offscreen.bundle->IASetVertexBuffers(0, 1, &offscreen.vertexBufferView);
+    offscreen.bundle->DrawInstanced(3, 1, 0, 0);
+    offscreen.bundle->Close();
+}
+
+void Window::initializeOnscreen()
+{
+    // Set up a cube that is textured with the render target from the offscreen step.
+
+    ID3D12Device *dev = device();
+
+    D3D12_STATIC_SAMPLER_DESC sampler = {};
+    sampler.Filter = D3D12_FILTER_MIN_MAG_MIP_POINT;
+    sampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.MinLOD = 0.0f;
+    sampler.MaxLOD = D3D12_FLOAT32_MAX;
+    sampler.ShaderRegister = 0; // s0
+    sampler.RegisterSpace = 0;
+    sampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
+
+    D3D12_ROOT_PARAMETER rootParameters[2];
+    rootParameters[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_CBV;
+    rootParameters[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
+    rootParameters[0].Descriptor.ShaderRegister = 0; // b0
+    rootParameters[0].Descriptor.RegisterSpace = 0;
+
+    D3D12_DESCRIPTOR_RANGE descRange;
+    descRange.RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
+    descRange.NumDescriptors = 1;
+    descRange.BaseShaderRegister = 0; // t0
+    descRange.RegisterSpace = 0;
+    descRange.OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+
+    rootParameters[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+    rootParameters[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
+    rootParameters[1].DescriptorTable.NumDescriptorRanges = 1;
+    rootParameters[1].DescriptorTable.pDescriptorRanges = &descRange;
+
+    D3D12_ROOT_SIGNATURE_DESC desc;
+    desc.NumParameters = 2;
+    desc.pParameters = rootParameters;
+    desc.NumStaticSamplers = 1;
+    desc.pStaticSamplers = &sampler;
+    desc.Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        qWarning("Failed to serialize root signature");
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(),
+                                        IID_PPV_ARGS(&onscreen.rootSignature)))) {
+        qWarning("Failed to create root signature");
+        return;
+    }
+
+    // We have a non-interleaved layout.
+    const D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 1, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
+    };
+
+    D3D12_SHADER_BYTECODE vshader;
+    vshader.pShaderBytecode = g_VS_Onscreen;
+    vshader.BytecodeLength = sizeof(g_VS_Onscreen);
+    D3D12_SHADER_BYTECODE pshader;
+    pshader.pShaderBytecode = g_PS_Onscreen;
+    pshader.BytecodeLength = sizeof(g_PS_Onscreen);
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = pso();
+    psoDesc.RasterizerState.FrontCounterClockwise = FALSE; // winding order for the cube data below is CW
+    psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
+    psoDesc.pRootSignature = onscreen.rootSignature.Get();
+    psoDesc.VS = vshader;
+    psoDesc.PS = pshader;
+
+    if (FAILED(dev->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&onscreen.pipelineState)))) {
+        qWarning("Failed to create graphics pipeline state");
+        return;
+    }
+
+    // borrowed from qtdeclarative/examples/quick/rendercontrol
+    const float v[] = {
+        -0.5, 0.5, 0.5, 0.5,-0.5,0.5,-0.5,-0.5,0.5,
+        0.5, -0.5, 0.5, -0.5,0.5,0.5,0.5,0.5,0.5,
+        -0.5, -0.5, -0.5, 0.5,-0.5,-0.5,-0.5,0.5,-0.5,
+        0.5, 0.5, -0.5, -0.5,0.5,-0.5,0.5,-0.5,-0.5,
+
+        0.5, -0.5, -0.5, 0.5,-0.5,0.5,0.5,0.5,-0.5,
+        0.5, 0.5, 0.5, 0.5,0.5,-0.5,0.5,-0.5,0.5,
+        -0.5, 0.5, -0.5, -0.5,-0.5,0.5,-0.5,-0.5,-0.5,
+        -0.5, -0.5, 0.5, -0.5,0.5,-0.5,-0.5,0.5,0.5,
+
+        0.5, 0.5,  -0.5, -0.5, 0.5,  0.5,  -0.5,  0.5,  -0.5,
+        -0.5,  0.5,  0.5,  0.5,  0.5,  -0.5, 0.5, 0.5,  0.5,
+        -0.5,  -0.5, -0.5, -0.5, -0.5, 0.5,  0.5, -0.5, -0.5,
+        0.5, -0.5, 0.5,  0.5,  -0.5, -0.5, -0.5,  -0.5, 0.5
+    };
+    const float texCoords[] = {
+        0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f,
+        1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f,
+        1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f,
+        0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f,
+
+        1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f,
+        0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f,
+        0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f,
+        1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f,
+
+        0.0f,1.0f, 1.0f,0.0f, 1.0f,1.0f,
+        1.0f,0.0f, 0.0f,1.0f, 0.0f,0.0f,
+        1.0f,0.0f, 1.0f,1.0f, 0.0f,0.0f,
+        0.0f,1.0f, 0.0f,0.0f, 1.0f,1.0f
+    };
+
+    const UINT vertexBufferSize = sizeof(v) + sizeof(texCoords);
+
+    D3D12_HEAP_PROPERTIES heapProp = {};
+    heapProp.Type = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC bufDesc = {};
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Width = vertexBufferSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR,
+                                            IID_PPV_ARGS(&onscreen.vertexBuffer)))) {
+        qWarning("Failed to create committed resource (vertex buffer for cube)");
+        return;
+    }
+
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(onscreen.vertexBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (vertex buffer for cube)");
+        return;
+    }
+    memcpy(p, v, sizeof(v));
+    memcpy(p + sizeof(v), texCoords, sizeof(texCoords));
+    onscreen.vertexBuffer->Unmap(0, Q_NULLPTR);
+
+    onscreen.vertexBufferView[0].BufferLocation = onscreen.vertexBuffer->GetGPUVirtualAddress();
+    onscreen.vertexBufferView[0].StrideInBytes = 3 * sizeof(float);
+    onscreen.vertexBufferView[0].SizeInBytes = sizeof(v);
+    onscreen.vertexBufferView[1].BufferLocation = onscreen.vertexBuffer->GetGPUVirtualAddress() + sizeof(v);
+    onscreen.vertexBufferView[1].StrideInBytes = 2 * sizeof(float);
+    onscreen.vertexBufferView[1].SizeInBytes = sizeof(texCoords);
+
+    const UINT CB_SIZE = alignedCBSize(128); // 2 * float4x4
+    bufDesc.Width = CB_SIZE;
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR,
+                                            IID_PPV_ARGS(&onscreen.constantBuffer)))) {
+        qWarning("Failed to create committed resource (constant buffer for cube)");
+        return;
+    }
+
+    if (FAILED(onscreen.constantBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (constant buffer for cube)");
+        return;
+    }
+    onscreen.cbPtr = p;
+
+    dev->CreateShaderResourceView(offscreen.rt.Get(), Q_NULLPTR, cbvSrvHeap->GetCPUDescriptorHandleForHeapStart());
+
+    // Create a bundle for drawing a cube.
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_BUNDLE, bundleAllocator(), Q_NULLPTR, IID_PPV_ARGS(&onscreen.bundle)))) {
+        qWarning("Failed to create onscreen command bundle");
+        return;
+    }
+    onscreen.bundle->SetPipelineState(onscreen.pipelineState.Get());
+    onscreen.bundle->SetGraphicsRootSignature(onscreen.rootSignature.Get());
+    onscreen.bundle->SetGraphicsRootConstantBufferView(0, onscreen.constantBuffer->GetGPUVirtualAddress());
+    // This is only here to be able to add the SetGraphicsRootDescriptorTable call below.
+    // Must match the heap set on the direct command list.
+    ID3D12DescriptorHeap *heaps[] = { cbvSrvHeap.Get() };
+    onscreen.bundle->SetDescriptorHeaps(_countof(heaps), heaps);
+    // cbvSrvHeap has a single SRV descriptor only so the start address is just what we need
+    onscreen.bundle->SetGraphicsRootDescriptorTable(1, cbvSrvHeap->GetGPUDescriptorHandleForHeapStart());
+    onscreen.bundle->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    onscreen.bundle->IASetVertexBuffers(0, 2, onscreen.vertexBufferView);
+    onscreen.bundle->DrawInstanced(36, 1, 0, 0);
+    onscreen.bundle->Close();
+
+    onscreen.projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::resizeD3D(const QSize &)
+{
+    onscreen.projection.setToIdentity();
+    onscreen.projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::paintD3D()
+{
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), Q_NULLPTR);
+
+    paintOffscreen();
+    paintOnscreen();
+
+    commandList->Close();
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update();
+}
+
+void Window::paintOffscreen()
+{
+    QMatrix4x4 modelview;
+    modelview.translate(0, 0, -2);
+    modelview.rotate(offscreen.rotationAngle, 0, 0, 1);
+    offscreen.rotationAngle += 1;
+    memcpy(offscreen.cbPtr, modelview.constData(), 16 * sizeof(float));
+    memcpy(offscreen.cbPtr + 16 * sizeof(float), offscreen.projection.constData(), 16 * sizeof(float));
+
+    D3D12_VIEWPORT viewport = { 0, 0, OFFSCREEN_WIDTH, OFFSCREEN_HEIGHT, 0, 1 };
+    commandList->RSSetViewports(1, &viewport);
+    D3D12_RECT scissorRect = { 0, 0, OFFSCREEN_WIDTH - 1, OFFSCREEN_HEIGHT - 1 };
+    commandList->RSSetScissorRects(1, &scissorRect);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = extraRenderTargetCPUHandle(0);
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = extraDepthStencilCPUHandle(0);
+    commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
+
+    commandList->ClearRenderTargetView(rtvHandle, offscreenClearColor, 0, Q_NULLPTR);
+    commandList->ClearDepthStencilView(dsvHandle, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, Q_NULLPTR);
+
+    commandList->ExecuteBundle(offscreen.bundle.Get());
+}
+
+void Window::paintOnscreen()
+{
+    QMatrix4x4 modelview;
+    modelview.translate(0, 0, -2);
+    modelview.rotate(onscreen.rotationAngle, 1, 0.5, 0);
+    onscreen.rotationAngle += 1;
+    memcpy(onscreen.cbPtr, modelview.constData(), 16 * sizeof(float));
+    memcpy(onscreen.cbPtr + 16 * sizeof(float), onscreen.projection.constData(), 16 * sizeof(float));
+
+    D3D12_VIEWPORT viewport = { 0, 0, float(width()), float(height()), 0, 1 };
+    commandList->RSSetViewports(1, &viewport);
+    D3D12_RECT scissorRect = { 0, 0, width() - 1, height() - 1 };
+    commandList->RSSetScissorRects(1, &scissorRect);
+
+    transitionResource(offscreen.rt.Get(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = backBufferRenderTargetCPUHandle();
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = depthStencilCPUHandle();
+    commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
+
+    commandList->ClearRenderTargetView(rtvHandle, onscreenClearColor, 0, Q_NULLPTR);
+    commandList->ClearDepthStencilView(dsvHandle, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, Q_NULLPTR);
+
+    ID3D12DescriptorHeap *heaps[] = { cbvSrvHeap.Get() };
+    commandList->SetDescriptorHeaps(_countof(heaps), heaps);
+
+    commandList->ExecuteBundle(onscreen.bundle.Get());
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT);
+    transitionResource(offscreen.rt.Get(), commandList.Get(), D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, D3D12_RESOURCE_STATE_RENDER_TARGET);
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f);
+}
+
+void Window::readbackAndSave()
+{
+    commandList->Reset(commandAllocator(), Q_NULLPTR);
+    QImage img = readbackRGBA8888(offscreen.rt.Get(), D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, commandList.Get());
+    QString fn = QFileDialog::getSaveFileName(Q_NULLPTR, QStringLiteral("Save PNG"), QString(), QStringLiteral("PNG files (*.png)"));
+    if (!fn.isEmpty()) {
+        img.save(fn);
+        QMessageBox::information(Q_NULLPTR, QStringLiteral("Saved"), QStringLiteral("Offscreen render target read back and saved to ") + fn);
+    }
+}
diff --git a/examples/hellooffscreen/window.h b/examples/hellooffscreen/window.h
new file mode 100644
index 0000000..530d6a3
--- /dev/null
+++ b/examples/hellooffscreen/window.h
@@ -0,0 +1,95 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+#include <QMatrix4x4>
+
+class Window : public QD3D12Window
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+public slots:
+    void readbackAndSave();
+
+private:
+    void initializeOffscreen();
+    void initializeOnscreen();
+    void paintOffscreen();
+    void paintOnscreen();
+
+    Fence *f;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    ComPtr<ID3D12DescriptorHeap> cbvSrvHeap;
+
+    struct OffscreenData {
+        OffscreenData() : cbPtr(Q_NULLPTR), rotationAngle(0) { }
+        ComPtr<ID3D12Resource> rt;
+        ComPtr<ID3D12Resource> ds;
+        ComPtr<ID3D12GraphicsCommandList> bundle;
+        ComPtr<ID3D12PipelineState> pipelineState;
+        ComPtr<ID3D12RootSignature> rootSignature;
+        ComPtr<ID3D12Resource> vertexBuffer;
+        ComPtr<ID3D12Resource> constantBuffer;
+        quint8 *cbPtr;
+        D3D12_VERTEX_BUFFER_VIEW vertexBufferView;
+        QMatrix4x4 projection;
+        float rotationAngle;
+    } offscreen;
+
+    struct OnscreenData {
+        OnscreenData() : cbPtr(Q_NULLPTR), rotationAngle(0) { }
+        ComPtr<ID3D12GraphicsCommandList> bundle;
+        ComPtr<ID3D12PipelineState> pipelineState;
+        ComPtr<ID3D12RootSignature> rootSignature;
+        ComPtr<ID3D12Resource> vertexBuffer;
+        ComPtr<ID3D12Resource> constantBuffer;
+        quint8 *cbPtr;
+        D3D12_VERTEX_BUFFER_VIEW vertexBufferView[2];
+        QMatrix4x4 projection;
+        float rotationAngle;
+    } onscreen;
+};
diff --git a/examples/hellooffscreen_opengl/hellooffscreen_opengl.pro b/examples/hellooffscreen_opengl/hellooffscreen_opengl.pro
new file mode 100644
index 0000000..f368a99
--- /dev/null
+++ b/examples/hellooffscreen_opengl/hellooffscreen_opengl.pro
@@ -0,0 +1,6 @@
+TEMPLATE = app
+QT += widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+RESOURCES = hellooffscreen_opengl.qrc
diff --git a/examples/hellooffscreen_opengl/hellooffscreen_opengl.qrc b/examples/hellooffscreen_opengl/hellooffscreen_opengl.qrc
new file mode 100644
index 0000000..bbbcc61
--- /dev/null
+++ b/examples/hellooffscreen_opengl/hellooffscreen_opengl.qrc
@@ -0,0 +1,8 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>shader_offscreen.vert</file>
+    <file>shader_offscreen.frag</file>
+    <file>shader_onscreen.vert</file>
+    <file>shader_onscreen.frag</file>
+</qresource>
+</RCC>
diff --git a/examples/hellooffscreen_opengl/main.cpp b/examples/hellooffscreen_opengl/main.cpp
new file mode 100644
index 0000000..3cab53f
--- /dev/null
+++ b/examples/hellooffscreen_opengl/main.cpp
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QMainWindow>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QMenuBar>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *glw = new Window;
+    QMainWindow mw;
+    QWidget *w = new QWidget;
+    QVBoxLayout *vl = new QVBoxLayout;
+    vl->addWidget(new QPushButton("Widgets + a native child window with OpenGL"));
+    vl->addWidget(new QLabel("Offscreen rendering via an FBO."));
+    QWidget *ww = QWidget::createWindowContainer(glw);
+    ww->setMinimumHeight(300);
+    vl->addWidget(ww);
+    vl->setStretchFactor(ww, 1.0);
+    w->setLayout(vl);
+
+    QMenu *fileMenu = mw.menuBar()->addMenu("&File");
+    fileMenu->addAction("&Save image", glw, &Window::readbackAndSave);
+    fileMenu->addAction("E&xit", &app, &QApplication::quit);
+
+    mw.setCentralWidget(w);
+    mw.resize(400, 400);
+    mw.show();
+
+    return app.exec();
+}
diff --git a/examples/hellooffscreen_opengl/shader_offscreen.frag b/examples/hellooffscreen_opengl/shader_offscreen.frag
new file mode 100644
index 0000000..7bb5db2
--- /dev/null
+++ b/examples/hellooffscreen_opengl/shader_offscreen.frag
@@ -0,0 +1,6 @@
+varying highp vec4 vColor;
+
+void main()
+{
+    gl_FragColor = vColor;
+}
diff --git a/examples/hellooffscreen_opengl/shader_offscreen.vert b/examples/hellooffscreen_opengl/shader_offscreen.vert
new file mode 100644
index 0000000..2dc9fe1
--- /dev/null
+++ b/examples/hellooffscreen_opengl/shader_offscreen.vert
@@ -0,0 +1,13 @@
+attribute vec4 position;
+attribute vec4 color;
+
+varying vec4 vColor;
+
+uniform mat4 projection;
+uniform mat4 modelview;
+
+void main()
+{
+    vColor = color;
+    gl_Position = projection * modelview * position;
+}
diff --git a/examples/hellooffscreen_opengl/shader_onscreen.frag b/examples/hellooffscreen_opengl/shader_onscreen.frag
new file mode 100644
index 0000000..dab1dc4
--- /dev/null
+++ b/examples/hellooffscreen_opengl/shader_onscreen.frag
@@ -0,0 +1,8 @@
+varying highp vec2 vTexCoord;
+
+uniform sampler2D sampler;
+
+void main()
+{
+    gl_FragColor = vec4(texture2D(sampler, vTexCoord).rgb, 1.0);
+}
diff --git a/examples/hellooffscreen_opengl/shader_onscreen.vert b/examples/hellooffscreen_opengl/shader_onscreen.vert
new file mode 100644
index 0000000..094ca59
--- /dev/null
+++ b/examples/hellooffscreen_opengl/shader_onscreen.vert
@@ -0,0 +1,13 @@
+attribute vec4 position;
+attribute vec2 texcoord;
+
+varying vec2 vTexCoord;
+
+uniform mat4 projection;
+uniform mat4 modelview;
+
+void main()
+{
+    vTexCoord = texcoord;
+    gl_Position = projection * modelview * position;
+}
diff --git a/examples/hellooffscreen_opengl/window.cpp b/examples/hellooffscreen_opengl/window.cpp
new file mode 100644
index 0000000..31bc098
--- /dev/null
+++ b/examples/hellooffscreen_opengl/window.cpp
@@ -0,0 +1,286 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QOpenGLFramebufferObject>
+#include <QOpenGLShaderProgram>
+#include <QOpenGLFunctions>
+#include <QOpenGLBuffer>
+#include <QOpenGLVertexArrayObject>
+
+static const int OFFSCREEN_WIDTH = 512;
+static const int OFFSCREEN_HEIGHT = 512;
+
+static const float offscreenClearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
+static const float onscreenClearColor[] = { 0.4f, 0.5f, 0.5f, 1.0f };
+
+Window::Window()
+{
+    QSurfaceFormat fmt;
+    fmt.setDepthBufferSize(24);
+    setFormat(fmt);
+}
+
+Window::~Window()
+{
+    makeCurrent();
+
+    delete offscreen.fbo;
+    delete offscreen.prog;
+    delete offscreen.vbo;
+    delete offscreen.vao;
+
+    delete onscreen.prog;
+    delete onscreen.vbo;
+    delete onscreen.vao;
+}
+
+void Window::initializeGL()
+{
+    initializeOffscreen();
+    initializeOnscreen();
+
+    QOpenGLFunctions *f = context()->functions();
+    f->glEnable(GL_DEPTH_TEST);
+    f->glEnable(GL_CULL_FACE);
+}
+
+void Window::initializeOffscreen()
+{
+    offscreen.fbo = new QOpenGLFramebufferObject(OFFSCREEN_WIDTH, OFFSCREEN_HEIGHT, QOpenGLFramebufferObject::CombinedDepthStencil);
+
+    offscreen.prog = new QOpenGLShaderProgram;
+    offscreen.prog->addShaderFromSourceFile(QOpenGLShader::Vertex, QStringLiteral(":/shader_offscreen.vert"));
+    offscreen.prog->addShaderFromSourceFile(QOpenGLShader::Fragment, QStringLiteral(":/shader_offscreen.frag"));
+    offscreen.prog->bindAttributeLocation("position", 0);
+    offscreen.prog->bindAttributeLocation("color", 1);
+    offscreen.prog->link();
+
+    offscreen.modelviewLoc = offscreen.prog->uniformLocation("modelview");
+    offscreen.projectionLoc = offscreen.prog->uniformLocation("projection");
+
+    offscreen.vao = new QOpenGLVertexArrayObject;
+    offscreen.vao->create();
+    QOpenGLVertexArrayObject::Binder vaoBinder(offscreen.vao);
+
+    offscreen.vbo = new QOpenGLBuffer;
+    offscreen.vbo->create();
+    offscreen.vbo->bind();
+
+    const float vertices[] = {
+        0.0f, 0.707f, 0.0f, /* color */ 1.0f, 0.0f, 0.0f, 1.0f,
+        -0.5f, -0.5f, 0.0f,             0.0f, 1.0f, 0.0f, 1.0f,
+        0.5f, -0.5f, 0.0f,              0.0f, 0.0f, 1.0f, 1.0f
+    };
+
+    const int vertexCount = 3;
+    offscreen.vbo->allocate(sizeof(GLfloat) * vertexCount * 7);
+    offscreen.vbo->write(0, vertices, sizeof(GLfloat) * vertexCount * 7);
+
+    if (offscreen.vao->isCreated())
+        setupOffscreenVertexAttribs();
+
+    offscreen.projection.perspective(60.0f, OFFSCREEN_WIDTH / float(OFFSCREEN_HEIGHT), 0.1f, 100.0f);
+}
+
+void Window::initializeOnscreen()
+{
+    onscreen.prog = new QOpenGLShaderProgram;
+    onscreen.prog->addShaderFromSourceFile(QOpenGLShader::Vertex, QStringLiteral(":/shader_onscreen.vert"));
+    onscreen.prog->addShaderFromSourceFile(QOpenGLShader::Fragment, QStringLiteral(":/shader_onscreen.frag"));
+    onscreen.prog->bindAttributeLocation("position", 0);
+    onscreen.prog->bindAttributeLocation("texcoord", 1);
+    onscreen.prog->link();
+
+    onscreen.modelviewLoc = onscreen.prog->uniformLocation("modelview");
+    onscreen.projectionLoc = onscreen.prog->uniformLocation("projection");
+
+    onscreen.vao = new QOpenGLVertexArrayObject;
+    onscreen.vao->create();
+    QOpenGLVertexArrayObject::Binder vaoBinder(onscreen.vao);
+
+    onscreen.vbo = new QOpenGLBuffer;
+    onscreen.vbo->create();
+    onscreen.vbo->bind();
+
+    GLfloat v[] = {
+        -0.5, 0.5, 0.5, 0.5,-0.5,0.5,-0.5,-0.5,0.5,
+        0.5, -0.5, 0.5, -0.5,0.5,0.5,0.5,0.5,0.5,
+        -0.5, -0.5, -0.5, 0.5,-0.5,-0.5,-0.5,0.5,-0.5,
+        0.5, 0.5, -0.5, -0.5,0.5,-0.5,0.5,-0.5,-0.5,
+
+        0.5, -0.5, -0.5, 0.5,-0.5,0.5,0.5,0.5,-0.5,
+        0.5, 0.5, 0.5, 0.5,0.5,-0.5,0.5,-0.5,0.5,
+        -0.5, 0.5, -0.5, -0.5,-0.5,0.5,-0.5,-0.5,-0.5,
+        -0.5, -0.5, 0.5, -0.5,0.5,-0.5,-0.5,0.5,0.5,
+
+        0.5, 0.5,  -0.5, -0.5, 0.5,  0.5,  -0.5,  0.5,  -0.5,
+        -0.5,  0.5,  0.5,  0.5,  0.5,  -0.5, 0.5, 0.5,  0.5,
+        -0.5,  -0.5, -0.5, -0.5, -0.5, 0.5,  0.5, -0.5, -0.5,
+        0.5, -0.5, 0.5,  0.5,  -0.5, -0.5, -0.5,  -0.5, 0.5
+    };
+    GLfloat texCoords[] = {
+        0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f,
+        1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f,
+        1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f,
+        0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f,
+
+        1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f,
+        0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f,
+        0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f,
+        1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f,
+
+        0.0f,1.0f, 1.0f,0.0f, 1.0f,1.0f,
+        1.0f,0.0f, 0.0f,1.0f, 0.0f,0.0f,
+        1.0f,0.0f, 1.0f,1.0f, 0.0f,0.0f,
+        0.0f,1.0f, 0.0f,0.0f, 1.0f,1.0f
+    };
+
+    const int vertexCount = 36;
+    onscreen.vbo->allocate(sizeof(GLfloat) * vertexCount * 5);
+    onscreen.vbo->write(0, v, sizeof(GLfloat) * vertexCount * 3);
+    onscreen.vbo->write(sizeof(GLfloat) * vertexCount * 3, texCoords, sizeof(GLfloat) * vertexCount * 2);
+
+    if (onscreen.vao->isCreated())
+        setupOnscreenVertexAttribs();
+
+    onscreen.projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::resizeGL(int, int)
+{
+    onscreen.projection.setToIdentity();
+    onscreen.projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::paintGL()
+{
+    paintOffscreen();
+    paintOnscreen();
+
+    update();
+}
+
+void Window::setupOffscreenVertexAttribs()
+{
+    QOpenGLFunctions *f = context()->functions();
+    offscreen.vbo->bind();
+    offscreen.prog->enableAttributeArray(0);
+    offscreen.prog->enableAttributeArray(1);
+    f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 7 * sizeof(GLfloat), 0);
+    f->glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, 7 * sizeof(GLfloat), (const void *)(3 * sizeof(GLfloat)));
+    offscreen.vbo->release();
+}
+
+void Window::paintOffscreen()
+{
+    QOpenGLFunctions *f = context()->functions();
+
+    offscreen.fbo->bind();
+    offscreen.prog->bind();
+    QOpenGLVertexArrayObject::Binder vaoBinder(offscreen.vao);
+    if (!offscreen.vao->isCreated())
+        setupOffscreenVertexAttribs();
+
+    QMatrix4x4 modelview;
+    modelview.translate(0, 0, -2);
+    modelview.rotate(offscreen.rotationAngle, 0, 0, 1);
+    offscreen.rotationAngle += 1;
+    offscreen.prog->setUniformValue(offscreen.modelviewLoc, modelview);
+    offscreen.prog->setUniformValue(offscreen.projectionLoc, offscreen.projection);
+
+    f->glViewport(0, 0, OFFSCREEN_WIDTH, OFFSCREEN_HEIGHT);
+    f->glClearColor(offscreenClearColor[0], offscreenClearColor[1], offscreenClearColor[2], offscreenClearColor[3]);
+    f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    f->glFrontFace(GL_CCW);
+    f->glDrawArrays(GL_TRIANGLES, 0, 3);
+
+    offscreen.fbo->release();
+}
+
+void Window::setupOnscreenVertexAttribs()
+{
+    QOpenGLFunctions *f = context()->functions();
+    onscreen.vbo->bind();
+    onscreen.prog->enableAttributeArray(0);
+    onscreen.prog->enableAttributeArray(1);
+    f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
+    f->glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, (const void *)(36 * 3 * sizeof(GLfloat)));
+    onscreen.vbo->release();
+}
+
+void Window::paintOnscreen()
+{
+    QOpenGLFunctions *f = context()->functions();
+
+    onscreen.prog->bind();
+    QOpenGLVertexArrayObject::Binder vaoBinder(onscreen.vao);
+    if (!onscreen.vao->isCreated())
+        setupOnscreenVertexAttribs();
+
+    f->glBindTexture(GL_TEXTURE_2D, offscreen.fbo->texture());
+
+    QMatrix4x4 modelview;
+    modelview.translate(0, 0, -2);
+    modelview.rotate(onscreen.rotationAngle, 1, 0.5, 0);
+    onscreen.rotationAngle += 1;
+    onscreen.prog->setUniformValue(onscreen.modelviewLoc, modelview);
+    onscreen.prog->setUniformValue(onscreen.projectionLoc, onscreen.projection);
+
+    f->glViewport(0, 0, width(), height());
+    f->glClearColor(onscreenClearColor[0], onscreenClearColor[1], onscreenClearColor[2], onscreenClearColor[3]);
+    f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    f->glFrontFace(GL_CW);
+    f->glDrawArrays(GL_TRIANGLES, 0, 36);
+}
+
+void Window::readbackAndSave()
+{
+    QImage img = offscreen.fbo->toImage();
+    QString fn = QFileDialog::getSaveFileName(Q_NULLPTR, QStringLiteral("Save PNG"), QString(), QStringLiteral("PNG files (*.png)"));
+    if (!fn.isEmpty()) {
+        img.save(fn);
+        QMessageBox::information(Q_NULLPTR, QStringLiteral("Saved"), QStringLiteral("Offscreen render target read back and saved to ") + fn);
+    }
+}
diff --git a/examples/hellooffscreen_opengl/window.h b/examples/hellooffscreen_opengl/window.h
new file mode 100644
index 0000000..4d7538c
--- /dev/null
+++ b/examples/hellooffscreen_opengl/window.h
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QOpenGLWindow>
+#include <QMatrix4x4>
+
+QT_BEGIN_NAMESPACE
+class QOpenGLFramebufferObject;
+class QOpenGLShaderProgram;
+class QOpenGLBuffer;
+class QOpenGLVertexArrayObject;
+QT_END_NAMESPACE
+
+class Window : public QOpenGLWindow
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeGL() Q_DECL_OVERRIDE;
+    void resizeGL(int w, int h) Q_DECL_OVERRIDE;
+    void paintGL() Q_DECL_OVERRIDE;
+
+public slots:
+    void readbackAndSave();
+
+private:
+    void initializeOffscreen();
+    void initializeOnscreen();
+    void setupOffscreenVertexAttribs();
+    void paintOffscreen();
+    void setupOnscreenVertexAttribs();
+    void paintOnscreen();
+
+    struct OffscreenData {
+        OffscreenData() : rotationAngle(0), fbo(Q_NULLPTR), prog(Q_NULLPTR), vbo(Q_NULLPTR), vao(Q_NULLPTR) { }
+        QMatrix4x4 projection;
+        float rotationAngle;
+        QOpenGLFramebufferObject *fbo;
+        QOpenGLShaderProgram *prog;
+        QOpenGLBuffer *vbo;
+        QOpenGLVertexArrayObject *vao;
+        int modelviewLoc;
+        int projectionLoc;
+    } offscreen;
+
+    struct OnscreenData {
+        OnscreenData() : rotationAngle(0), prog(Q_NULLPTR), vbo(Q_NULLPTR), vao(Q_NULLPTR) { }
+        QMatrix4x4 projection;
+        float rotationAngle;
+        QOpenGLShaderProgram *prog;
+        QOpenGLBuffer *vbo;
+        QOpenGLVertexArrayObject *vao;
+        int modelviewLoc;
+        int projectionLoc;
+    } onscreen;
+};
diff --git a/examples/hellotexture/hellotexture.pro b/examples/hellotexture/hellotexture.pro
new file mode 100644
index 0000000..b173c9c
--- /dev/null
+++ b/examples/hellotexture/hellotexture.pro
@@ -0,0 +1,23 @@
+TEMPLATE = app
+QT += d3d12window widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+RESOURCES = hellotexture.qrc
+
+LIBS = -ld3d12
+
+VSPS = shader.hlsl
+
+vshader.input = VSPS
+vshader.header = shader_vs.h
+vshader.entry = VS_Texture
+vshader.type = vs_5_0
+
+pshader.input = VSPS
+pshader.header = shader_ps.h
+pshader.entry = PS_Texture
+pshader.type = ps_5_0
+
+HLSL_SHADERS = vshader pshader
+load(hlsl)
diff --git a/examples/hellotexture/hellotexture.qrc b/examples/hellotexture/hellotexture.qrc
new file mode 100644
index 0000000..ff1d0e5
--- /dev/null
+++ b/examples/hellotexture/hellotexture.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>qt.png</file>
+</qresource>
+</RCC>
diff --git a/examples/hellotexture/main.cpp b/examples/hellotexture/main.cpp
new file mode 100644
index 0000000..be2ebb7
--- /dev/null
+++ b/examples/hellotexture/main.cpp
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QWidget>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QScrollArea>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *d3dw = new Window;
+    QWidget w;
+    QVBoxLayout *vl = new QVBoxLayout;
+    vl->addWidget(new QPushButton("Widgets + a native child window with D3D12, this time in a scroll area"));
+    vl->addWidget(new QLabel("Now with a texture and mipmaps!"));
+    QWidget *ww = QWidget::createWindowContainer(d3dw);
+    ww->setMinimumWidth(1000);
+    ww->setMinimumHeight(1000);
+    // NB using a scroll area will result in creating a native window for every
+    // widget in the parent chain in order to ensure proper clipping.
+    QScrollArea *sa = new QScrollArea;
+    sa->setWidget(ww);
+    vl->addWidget(sa);
+    w.resize(400, 400);
+    w.setLayout(vl);
+    w.show();
+
+    return app.exec();
+}
diff --git a/examples/hellotexture/qt.png b/examples/hellotexture/qt.png
new file mode 100644
index 0000000..f30eec0
--- /dev/null
+++ b/examples/hellotexture/qt.png
diff --git a/examples/hellotexture/shader.hlsl b/examples/hellotexture/shader.hlsl
new file mode 100644
index 0000000..be69b39
--- /dev/null
+++ b/examples/hellotexture/shader.hlsl
@@ -0,0 +1,36 @@
+cbuffer ConstantBuffer : register(b0)
+{
+        float4x4 modelview;
+        float4x4 projection;
+};
+
+struct VSInput
+{
+        float4 position : POSITION;
+        float2 coord : TEXCOORD0;
+};
+
+struct PSInput
+{
+        float4 position : SV_POSITION;
+        float2 coord : TEXCOORD0;
+};
+
+Texture2D tex : register(t0);
+SamplerState samp : register(s0);
+
+PSInput VS_Texture(VSInput input)
+{
+        PSInput result;
+
+        float4x4 mvp = mul(projection, modelview);
+        result.position = mul(mvp, input.position);
+        result.coord = input.coord;
+
+        return result;
+}
+
+float4 PS_Texture(PSInput input) : SV_TARGET
+{
+        return tex.Sample(samp, input.coord);
+}
diff --git a/examples/hellotexture/window.cpp b/examples/hellotexture/window.cpp
new file mode 100644
index 0000000..0dfb31a
--- /dev/null
+++ b/examples/hellotexture/window.cpp
@@ -0,0 +1,406 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include "shader_vs.h"
+#include "shader_ps.h"
+
+static const int TEXTURE_WIDTH = 512;
+static const int TEXTURE_HEIGHT = 512;
+static const int TEXTURE_MIP_LEVELS = 8;
+
+Window::Window()
+    : f(Q_NULLPTR),
+      cbPtr(Q_NULLPTR),
+      rotationAngle(0)
+{
+}
+
+Window::~Window()
+{
+    if (cbPtr)
+        constantBuffer->Unmap(0, Q_NULLPTR);
+
+    delete f;
+}
+
+void Window::initializeD3D()
+{
+    QImage qtLogo = QImage(QStringLiteral(":/qt.png")).convertToFormat(QImage::Format_RGBA8888).scaled(TEXTURE_WIDTH, TEXTURE_HEIGHT);
+    if (qtLogo.isNull()) {
+        qWarning("Failed to load image data");
+        return;
+    }
+
+    f = createFence();
+    ID3D12Device *dev = device();
+
+    // One static sampler (no sampler heap is needed).
+    D3D12_STATIC_SAMPLER_DESC sampler = {};
+    sampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
+    sampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
+    sampler.MinLOD = 0.0f;
+    sampler.MaxLOD = D3D12_FLOAT32_MAX;
+    sampler.ShaderRegister = 0;
+    sampler.RegisterSpace = 0;
+    sampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
+
+    // In addition to the constant buffer view we will now also have a shader
+    // resource view in order to expose the texture to the pixel shader.
+    D3D12_DESCRIPTOR_RANGE descRange[2];
+    descRange[0].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_CBV;
+    descRange[0].NumDescriptors = 1;
+    descRange[0].BaseShaderRegister = 0; // b0
+    descRange[0].RegisterSpace = 0;
+    descRange[0].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+    descRange[1].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
+    descRange[1].NumDescriptors = 1;
+    descRange[1].BaseShaderRegister = 0; // t0
+    descRange[1].RegisterSpace = 0;
+    descRange[1].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
+
+    D3D12_ROOT_PARAMETER rootParameter;
+    rootParameter.ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+    rootParameter.ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
+    rootParameter.DescriptorTable.NumDescriptorRanges = 2;
+    rootParameter.DescriptorTable.pDescriptorRanges = descRange;
+
+    D3D12_ROOT_SIGNATURE_DESC desc;
+    desc.NumParameters = 1;
+    desc.pParameters = &rootParameter;
+    desc.NumStaticSamplers = 1;
+    desc.pStaticSamplers = &sampler;
+    desc.Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        qWarning("Failed to serialize root signature");
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&rootSignature)))) {
+        qWarning("Failed to create root signature");
+        return;
+    }
+
+    D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
+    };
+
+    D3D12_SHADER_BYTECODE vshader;
+    vshader.pShaderBytecode = g_VS_Texture;
+    vshader.BytecodeLength = sizeof(g_VS_Texture);
+    D3D12_SHADER_BYTECODE pshader;
+    pshader.pShaderBytecode = g_PS_Texture;
+    pshader.BytecodeLength = sizeof(g_PS_Texture);
+
+    D3D12_RASTERIZER_DESC rastDesc = {};
+    rastDesc.FillMode = D3D12_FILL_MODE_SOLID;
+    rastDesc.CullMode = D3D12_CULL_MODE_BACK;
+    rastDesc.FrontCounterClockwise = TRUE; // Vertices are given CCW
+    rastDesc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
+    rastDesc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
+    rastDesc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
+    rastDesc.DepthClipEnable = TRUE;
+
+    // Our material is transparent (the image has alpha < 255). Enable blending.
+    const D3D12_RENDER_TARGET_BLEND_DESC defaultRenderTargetBlendDesc = {
+        TRUE, FALSE,
+        D3D12_BLEND_SRC_ALPHA, D3D12_BLEND_INV_SRC_ALPHA, D3D12_BLEND_OP_ADD,
+        D3D12_BLEND_ZERO, D3D12_BLEND_ZERO, D3D12_BLEND_OP_ADD,
+        D3D12_LOGIC_OP_NOOP,
+        D3D12_COLOR_WRITE_ENABLE_ALL
+    };
+    D3D12_BLEND_DESC blendDesc = {};
+    blendDesc.RenderTarget[0] = defaultRenderTargetBlendDesc;
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
+    psoDesc.pRootSignature = rootSignature.Get();
+    psoDesc.VS = vshader;
+    psoDesc.PS = pshader;
+    psoDesc.RasterizerState = rastDesc;
+    psoDesc.BlendState = blendDesc;
+    psoDesc.DepthStencilState.DepthEnable = TRUE;
+    psoDesc.DepthStencilState.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
+    psoDesc.DepthStencilState.DepthFunc = D3D12_COMPARISON_FUNC_LESS;
+    psoDesc.DepthStencilState.StencilEnable = FALSE;
+    psoDesc.SampleMask = UINT_MAX;
+    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+    psoDesc.NumRenderTargets = 1;
+    psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
+    psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT;
+    psoDesc.SampleDesc.Count = 1;
+    if (FAILED(dev->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&pipelineState)))) {
+        qWarning("Failed to create graphics pipeline state");
+        return;
+    }
+
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR, IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+
+    // Vertex buffer
+    const float vertices[] = {
+        -0.5f, -0.5f, 0, /* coords */ 0, 1, // the image was not flipped so accommodate for it here
+        0.5f, -0.5f, 0,               1, 1,
+        -0.5f, 0.5f, 0,               0, 0,
+
+        -0.5f, 0.5f, 0,               0, 0,
+        0.5f, -0.5f, 0,               1, 1,
+        0.5f, 0.5f, 0,                1, 0
+    };
+    const UINT vertexBufferSize = sizeof(vertices);
+
+    D3D12_HEAP_PROPERTIES defaultHeapProp = {};
+    defaultHeapProp.Type = D3D12_HEAP_TYPE_DEFAULT;
+    D3D12_HEAP_PROPERTIES uploadHeapProp = defaultHeapProp;
+    uploadHeapProp.Type = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC bufDesc = {};
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Width = vertexBufferSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&vertexBuffer)))) {
+        qWarning("Failed to create committed resource (vertex buffer)");
+        return;
+    }
+
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(vertexBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (vertex buffer)");
+        return;
+    }
+    memcpy(p, vertices, vertexBufferSize);
+    vertexBuffer->Unmap(0, Q_NULLPTR);
+
+    vertexBufferView.BufferLocation = vertexBuffer->GetGPUVirtualAddress();
+    vertexBufferView.StrideInBytes = (3 + 2) * sizeof(float);
+    vertexBufferView.SizeInBytes = vertexBufferSize;
+
+    // Constant buffer
+    const UINT CB_SIZE = alignedCBSize(128); // 2 * float4x4
+    bufDesc.Width = CB_SIZE;
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&constantBuffer)))) {
+        qWarning("Failed to create committed resource (constant buffer)");
+        return;
+    }
+
+    if (FAILED(constantBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (constant buffer)");
+        return;
+    }
+    cbPtr = p; // won't Unmap() this here
+
+    // Texture (with mipmaps, to make it more exciting)
+    D3D12_RESOURCE_DESC textureDesc = {};
+    textureDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
+    textureDesc.Width = TEXTURE_WIDTH;
+    textureDesc.Height = TEXTURE_HEIGHT;
+    textureDesc.DepthOrArraySize = 1;
+    textureDesc.MipLevels = TEXTURE_MIP_LEVELS;
+    textureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    textureDesc.SampleDesc.Count = 1;
+    textureDesc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
+
+    // Ignore UMA for now and do the discrete-friendly upload via an upload buffer (no CPU access to the texture).
+    if (FAILED(dev->CreateCommittedResource(&defaultHeapProp, D3D12_HEAP_FLAG_NONE, &textureDesc,
+                                            D3D12_RESOURCE_STATE_COPY_DEST, Q_NULLPTR, IID_PPV_ARGS(&texture)))) {
+        qWarning("Failed to create texture resource");
+        return;
+    }
+
+    ComPtr<ID3D12Resource> textureUploadBuffer;
+    UINT64 textureUploadBufferSize;
+    D3D12_PLACED_SUBRESOURCE_FOOTPRINT textureLayout[TEXTURE_MIP_LEVELS];
+    dev->GetCopyableFootprints(&textureDesc, 0, TEXTURE_MIP_LEVELS, 0, textureLayout,
+                               Q_NULLPTR, Q_NULLPTR, &textureUploadBufferSize);
+    bufDesc.Width = textureUploadBufferSize;
+    if (FAILED(dev->CreateCommittedResource(&uploadHeapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&textureUploadBuffer)))) {
+        qWarning("Failed to create texture upload buffer resource");
+        return;
+    }
+
+    if (FAILED(textureUploadBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (texture upload buffer)");
+        return;
+    }
+    int mipW = qtLogo.width(), mipH = qtLogo.height();
+    for (int level = 0; level < TEXTURE_MIP_LEVELS; ++level) {
+        quint8 *mipP = p + textureLayout[level].Offset;
+        // This is not quite how mipmaps are created ideally, but will do for now...
+        QImage img = qtLogo.scaled(mipW, mipH);
+        for (int y = 0; y < mipH; ++y) {
+            memcpy(mipP, img.scanLine(y), mipW * 4);
+            mipP += textureLayout[level].Footprint.RowPitch; // stride is at least 256 here
+        }
+        mipW /= 2;
+        mipH /= 2;
+    }
+    textureUploadBuffer->Unmap(0, Q_NULLPTR);
+
+    for (int level = 0; level < TEXTURE_MIP_LEVELS; ++level) {
+        D3D12_TEXTURE_COPY_LOCATION dstLoc;
+        dstLoc.pResource = texture.Get();
+        dstLoc.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
+        dstLoc.SubresourceIndex = level;
+        D3D12_TEXTURE_COPY_LOCATION srcLoc;
+        srcLoc.pResource = textureUploadBuffer.Get();
+        srcLoc.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
+        srcLoc.PlacedFootprint = textureLayout[level];
+        commandList->CopyTextureRegion(&dstLoc, 0, 0, 0, &srcLoc, Q_NULLPTR); // upload buffer -> texture
+    }
+
+    // once the copy is done the texture is ready to be used from the pixel shader
+    transitionResource(texture.Get(), commandList.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);
+
+    // Constant buffer view and shader resource view descriptors are stored in the same heap.
+    const UINT cbvSrvStride = dev->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
+    D3D12_DESCRIPTOR_HEAP_DESC cbvSrvHeapDesc = {};
+    cbvSrvHeapDesc.NumDescriptors = 2;
+    cbvSrvHeapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
+    cbvSrvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
+    if (FAILED(dev->CreateDescriptorHeap(&cbvSrvHeapDesc, IID_PPV_ARGS(&cbvSrvHeap)))) {
+        qWarning("Failed to create CBV/SRV/UAV descriptor heap");
+        return;
+    }
+
+    D3D12_CPU_DESCRIPTOR_HANDLE cbvSrvHandle = cbvSrvHeap->GetCPUDescriptorHandleForHeapStart();
+    D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {};
+    cbvDesc.BufferLocation = constantBuffer->GetGPUVirtualAddress();
+    cbvDesc.SizeInBytes = CB_SIZE;
+    dev->CreateConstantBufferView(&cbvDesc, cbvSrvHandle);
+    cbvSrvHandle.ptr += cbvSrvStride;
+
+    D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {};
+    srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
+    srvDesc.Format = textureDesc.Format;
+    srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
+    srvDesc.Texture2D.MipLevels = TEXTURE_MIP_LEVELS;
+    dev->CreateShaderResourceView(texture.Get(), &srvDesc, cbvSrvHandle);
+
+    // Execute the texture upload.
+    commandList->Close();
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    // Block until all the above has finished.
+    waitForGPU(f);
+
+    setupProjection();
+}
+
+void Window::resizeD3D(const QSize &)
+{
+    setupProjection();
+}
+
+void Window::setupProjection()
+{
+    projection.setToIdentity();
+    projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::paintD3D()
+{
+    modelview.setToIdentity();
+    modelview.translate(0, 0, -2);
+    // our highly sophisticated animation
+    modelview.rotate(rotationAngle, 0, 0, 1);
+    rotationAngle += 1;
+
+    memcpy(cbPtr, modelview.constData(), 16 * sizeof(float));
+    memcpy(cbPtr + 16 * sizeof(float), projection.constData(), 16 * sizeof(float));
+
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), pipelineState.Get());
+
+    commandList->SetGraphicsRootSignature(rootSignature.Get());
+
+    ID3D12DescriptorHeap *heaps[] = { cbvSrvHeap.Get() };
+    commandList->SetDescriptorHeaps(_countof(heaps), heaps);
+    commandList->SetGraphicsRootDescriptorTable(0, cbvSrvHeap->GetGPUDescriptorHandleForHeapStart());
+
+    D3D12_VIEWPORT viewport = { 0, 0, float(width()), float(height()), 0, 1 };
+    commandList->RSSetViewports(1, &viewport);
+    D3D12_RECT scissorRect = { 0, 0, width() - 1, height() - 1 };
+    commandList->RSSetScissorRects(1, &scissorRect);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = backBufferRenderTargetCPUHandle();
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = depthStencilCPUHandle();
+    commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
+
+    const float clearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
+    commandList->ClearRenderTargetView(rtvHandle, clearColor, 0, Q_NULLPTR);
+    commandList->ClearDepthStencilView(dsvHandle, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, Q_NULLPTR);
+
+    commandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    commandList->IASetVertexBuffers(0, 1, &vertexBufferView);
+    commandList->DrawInstanced(6, 1, 0, 0);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT);
+    commandList->Close();
+
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update();
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f);
+}
diff --git a/examples/hellotexture/window.h b/examples/hellotexture/window.h
new file mode 100644
index 0000000..a0fef7b
--- /dev/null
+++ b/examples/hellotexture/window.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+#include <QMatrix4x4>
+
+class Window : public QD3D12Window
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+private:
+    void setupProjection();
+
+    Fence *f;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    ComPtr<ID3D12PipelineState> pipelineState;
+    ComPtr<ID3D12RootSignature> rootSignature;
+    ComPtr<ID3D12Resource> vertexBuffer;
+    ComPtr<ID3D12Resource> constantBuffer;
+    ComPtr<ID3D12Resource> texture;
+    ComPtr<ID3D12DescriptorHeap> cbvSrvHeap;
+    D3D12_VERTEX_BUFFER_VIEW vertexBufferView;
+
+    QMatrix4x4 projection;
+    QMatrix4x4 modelview;
+    quint8 *cbPtr;
+    float rotationAngle;
+};
diff --git a/examples/hellotriangle/hellotriangle.pro b/examples/hellotriangle/hellotriangle.pro
new file mode 100644
index 0000000..0d36378
--- /dev/null
+++ b/examples/hellotriangle/hellotriangle.pro
@@ -0,0 +1,22 @@
+TEMPLATE = app
+QT += d3d12window widgets
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
+
+LIBS = -ld3d12
+
+VSPS = shader.hlsl
+
+vshader.input = VSPS
+vshader.header = shader_vs.h
+vshader.entry = VS_Simple
+vshader.type = vs_5_0
+
+pshader.input = VSPS
+pshader.header = shader_ps.h
+pshader.entry = PS_Simple
+pshader.type = ps_5_0
+
+HLSL_SHADERS = vshader pshader
+load(hlsl)
diff --git a/examples/hellotriangle/main.cpp b/examples/hellotriangle/main.cpp
new file mode 100644
index 0000000..94f9ae7
--- /dev/null
+++ b/examples/hellotriangle/main.cpp
@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QWidget>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QCalendarWidget>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Window *d3dw = new Window;
+    QWidget w;
+    QVBoxLayout *vl = new QVBoxLayout;
+    vl->addWidget(new QPushButton("Widgets + a native child window with D3D12"));
+    vl->addWidget(new QCalendarWidget);
+    QWidget *ww = QWidget::createWindowContainer(d3dw);
+    ww->setMinimumHeight(300);
+    vl->addWidget(ww);
+    w.resize(400, 400);
+    w.setLayout(vl);
+    w.show();
+
+    return app.exec();
+}
diff --git a/examples/hellotriangle/shader.hlsl b/examples/hellotriangle/shader.hlsl
new file mode 100644
index 0000000..8b9b9ff
--- /dev/null
+++ b/examples/hellotriangle/shader.hlsl
@@ -0,0 +1,27 @@
+cbuffer ConstantBuffer : register(b0)
+{
+        float4x4 modelview;
+        float4x4 projection;
+};
+
+struct PSInput
+{
+        float4 position : SV_POSITION;
+        float4 color : COLOR;
+};
+
+PSInput VS_Simple(float4 position : POSITION, float4 color : COLOR)
+{
+        PSInput result;
+
+        float4x4 mvp = mul(projection, modelview);
+        result.position = mul(mvp, position);
+        result.color = color;
+
+        return result;
+}
+
+float4 PS_Simple(PSInput input) : SV_TARGET
+{
+        return input.color;
+}
diff --git a/examples/hellotriangle/window.cpp b/examples/hellotriangle/window.cpp
new file mode 100644
index 0000000..049b467
--- /dev/null
+++ b/examples/hellotriangle/window.cpp
@@ -0,0 +1,263 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+#include "shader_vs.h"
+#include "shader_ps.h"
+
+Window::Window()
+    : f(Q_NULLPTR),
+      cbPtr(Q_NULLPTR),
+      rotationAngle(0)
+{
+}
+
+Window::~Window()
+{
+    if (cbPtr)
+        constantBuffer->Unmap(0, Q_NULLPTR);
+
+    delete f;
+}
+
+void Window::initializeD3D()
+{
+    f = createFence();
+    ID3D12Device *dev = device();
+
+    D3D12_ROOT_PARAMETER rootParameter;
+    rootParameter.ParameterType = D3D12_ROOT_PARAMETER_TYPE_CBV;
+    rootParameter.ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
+    rootParameter.Descriptor.ShaderRegister = 0; // b0
+    rootParameter.Descriptor.RegisterSpace = 0;
+
+    D3D12_ROOT_SIGNATURE_DESC desc;
+    desc.NumParameters = 1;
+    desc.pParameters = &rootParameter;
+    desc.NumStaticSamplers = 0;
+    desc.pStaticSamplers = Q_NULLPTR;
+    desc.Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT;
+
+    ComPtr<ID3DBlob> signature;
+    ComPtr<ID3DBlob> error;
+    if (FAILED(D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error))) {
+        qWarning("Failed to serialize root signature");
+        return;
+    }
+    if (FAILED(dev->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&rootSignature)))) {
+        qWarning("Failed to create root signature");
+        return;
+    }
+
+    D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
+    };
+
+    D3D12_SHADER_BYTECODE vshader;
+    vshader.pShaderBytecode = g_VS_Simple;
+    vshader.BytecodeLength = sizeof(g_VS_Simple);
+    D3D12_SHADER_BYTECODE pshader;
+    pshader.pShaderBytecode = g_PS_Simple;
+    pshader.BytecodeLength = sizeof(g_PS_Simple);
+
+    D3D12_RASTERIZER_DESC rastDesc = {};
+    rastDesc.FillMode = D3D12_FILL_MODE_SOLID;
+    rastDesc.CullMode = D3D12_CULL_MODE_BACK;
+    rastDesc.FrontCounterClockwise = TRUE; // Vertices are given CCW
+    rastDesc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
+    rastDesc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
+    rastDesc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
+    rastDesc.DepthClipEnable = TRUE;
+
+    // No blending, just enable color write.
+    D3D12_RENDER_TARGET_BLEND_DESC defaultRenderTargetBlendDesc = {};
+    defaultRenderTargetBlendDesc.RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
+    D3D12_BLEND_DESC blendDesc = {};
+    blendDesc.RenderTarget[0] = defaultRenderTargetBlendDesc;
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
+    psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
+    psoDesc.pRootSignature = rootSignature.Get();
+    psoDesc.VS = vshader;
+    psoDesc.PS = pshader;
+    psoDesc.RasterizerState = rastDesc;
+    psoDesc.BlendState = blendDesc;
+    psoDesc.DepthStencilState.DepthEnable = TRUE;
+    psoDesc.DepthStencilState.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
+    psoDesc.DepthStencilState.DepthFunc = D3D12_COMPARISON_FUNC_LESS;
+    psoDesc.DepthStencilState.StencilEnable = FALSE;
+    psoDesc.SampleMask = UINT_MAX;
+    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+    psoDesc.NumRenderTargets = 1;
+    psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
+    psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT;
+    psoDesc.SampleDesc.Count = 1;
+    if (FAILED(dev->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&pipelineState)))) {
+        qWarning("Failed to create graphics pipeline state");
+        return;
+    }
+
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR, IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+    commandList->Close();
+
+    const float vertices[] = {
+        0.0f, 0.707f, 0.0f, /* color */ 1.0f, 0.0f, 0.0f, 1.0f,
+        -0.5f, -0.5f, 0.0f,             0.0f, 1.0f, 0.0f, 1.0f,
+        0.5f, -0.5f, 0.0f,              0.0f, 0.0f, 1.0f, 1.0f
+    };
+    const UINT vertexBufferSize = sizeof(vertices);
+
+    D3D12_HEAP_PROPERTIES heapProp = {};
+    heapProp.Type = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC bufDesc;
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Alignment = 0;
+    bufDesc.Width = vertexBufferSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.SampleDesc.Quality = 0;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+    bufDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
+
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&vertexBuffer)))) {
+        qWarning("Failed to create committed resource (vertex buffer)");
+        return;
+    }
+
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(vertexBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed");
+        return;
+    }
+    memcpy(p, vertices, vertexBufferSize);
+    vertexBuffer->Unmap(0, Q_NULLPTR);
+
+    vertexBufferView.BufferLocation = vertexBuffer->GetGPUVirtualAddress();
+    vertexBufferView.StrideInBytes = (3 + 4) * sizeof(float);
+    vertexBufferView.SizeInBytes = vertexBufferSize;
+
+    const UINT CB_SIZE = alignedCBSize(128); // 2 * float4x4
+    bufDesc.Width = CB_SIZE;
+    if (FAILED(dev->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_GENERIC_READ, Q_NULLPTR, IID_PPV_ARGS(&constantBuffer)))) {
+        qWarning("Failed to create committed resource (constant buffer)");
+        return;
+    }
+
+    if (FAILED(constantBuffer->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Map failed (constant buffer)");
+        return;
+    }
+    cbPtr = p;
+
+    setupProjection();
+}
+
+void Window::resizeD3D(const QSize &)
+{
+    setupProjection();
+}
+
+void Window::setupProjection()
+{
+    projection.setToIdentity();
+    projection.perspective(60.0f, width() / float(height()), 0.1f, 100.0f);
+}
+
+void Window::paintD3D()
+{
+    modelview.setToIdentity();
+    modelview.translate(0, 0, -2);
+    // our highly sophisticated animation
+    modelview.rotate(rotationAngle, 0, 0, 1);
+    rotationAngle += 1;
+
+    memcpy(cbPtr, modelview.constData(), 16 * sizeof(float));
+    memcpy(cbPtr + 16 * sizeof(float), projection.constData(), 16 * sizeof(float));
+
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), pipelineState.Get());
+
+    commandList->SetGraphicsRootSignature(rootSignature.Get()); // invalidates bindings
+
+    commandList->SetGraphicsRootConstantBufferView(0, constantBuffer->GetGPUVirtualAddress());
+
+    D3D12_VIEWPORT viewport = { 0, 0, float(width()), float(height()), 0, 1 };
+    commandList->RSSetViewports(1, &viewport);
+    D3D12_RECT scissorRect = { 0, 0, width() - 1, height() - 1 };
+    commandList->RSSetScissorRects(1, &scissorRect);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = backBufferRenderTargetCPUHandle();
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = depthStencilCPUHandle();
+    commandList->OMSetRenderTargets(1, &rtvHandle, FALSE, &dsvHandle);
+
+    const float clearColor[] = { 0.0f, 0.2f, 0.4f, 1.0f };
+    commandList->ClearRenderTargetView(rtvHandle, clearColor, 0, Q_NULLPTR);
+    commandList->ClearDepthStencilView(dsvHandle, D3D12_CLEAR_FLAG_DEPTH, 1.0f, 0, 0, Q_NULLPTR);
+
+    commandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    commandList->IASetVertexBuffers(0, 1, &vertexBufferView);
+    commandList->DrawInstanced(3, 1, 0, 0);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT);
+    commandList->Close();
+
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update();
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f);
+}
diff --git a/examples/hellotriangle/window.h b/examples/hellotriangle/window.h
new file mode 100644
index 0000000..d50a5a4
--- /dev/null
+++ b/examples/hellotriangle/window.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+#include <QMatrix4x4>
+
+class Window : public QD3D12Window
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+private:
+    void setupProjection();
+
+    Fence *f;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    ComPtr<ID3D12PipelineState> pipelineState;
+    ComPtr<ID3D12RootSignature> rootSignature;
+    ComPtr<ID3D12Resource> vertexBuffer;
+    ComPtr<ID3D12Resource> constantBuffer;
+    D3D12_VERTEX_BUFFER_VIEW vertexBufferView;
+
+    QMatrix4x4 projection;
+    QMatrix4x4 modelview;
+    quint8 *cbPtr;
+    float rotationAngle;
+};
diff --git a/examples/hellowindow/hellowindow.pro b/examples/hellowindow/hellowindow.pro
new file mode 100644
index 0000000..6922627
--- /dev/null
+++ b/examples/hellowindow/hellowindow.pro
@@ -0,0 +1,5 @@
+TEMPLATE = app
+QT += d3d12window
+
+SOURCES = main.cpp window.cpp
+HEADERS = window.h
diff --git a/examples/hellowindow/main.cpp b/examples/hellowindow/main.cpp
new file mode 100644
index 0000000..08baaff
--- /dev/null
+++ b/examples/hellowindow/main.cpp
@@ -0,0 +1,51 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QGuiApplication>
+#include "window.h"
+
+int main(int argc, char **argv)
+{
+    QGuiApplication app(argc, argv);
+    Window window;
+    window.resize(1024, 768);
+    window.show();
+    return app.exec();
+}
diff --git a/examples/hellowindow/window.cpp b/examples/hellowindow/window.cpp
new file mode 100644
index 0000000..9682d56
--- /dev/null
+++ b/examples/hellowindow/window.cpp
@@ -0,0 +1,95 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 "window.h"
+
+Window::Window()
+    : f(Q_NULLPTR),
+      green(0)
+{
+}
+
+Window::~Window()
+{
+    delete f;
+}
+
+void Window::initializeD3D()
+{
+    f = createFence();
+    ID3D12Device *dev = device();
+    if (FAILED(dev->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, commandAllocator(), Q_NULLPTR, IID_PPV_ARGS(&commandList)))) {
+        qWarning("Failed to create command list");
+        return;
+    }
+    commandList->Close();
+}
+
+void Window::resizeD3D(const QSize &size)
+{
+    qDebug("resize %d %d", size.width(), size.height());
+}
+
+void Window::paintD3D()
+{
+    commandAllocator()->Reset();
+    commandList->Reset(commandAllocator(), Q_NULLPTR);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
+
+    green += 0.01f;
+    if (green > 1.0f)
+        green = 0.0f;
+    const float clearColor[] = { 0.0f, green, 0.0f, 1.0f };
+    commandList->ClearRenderTargetView(backBufferRenderTargetCPUHandle(), clearColor, 0, Q_NULLPTR);
+
+    transitionResource(backBufferRenderTarget(), commandList.Get(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT);
+    commandList->Close();
+
+    ID3D12CommandList *commandLists[] = { commandList.Get() };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+
+    update(); // schedule the next frame by posting an UpdateRequest event
+}
+
+void Window::afterPresent()
+{
+    waitForGPU(f);
+}
diff --git a/examples/hellowindow/window.h b/examples/hellowindow/window.h
new file mode 100644
index 0000000..9114e00
--- /dev/null
+++ b/examples/hellowindow/window.h
@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of 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 <QD3D12Window>
+
+class Window : public QD3D12Window
+{
+public:
+    Window();
+    ~Window();
+
+    void initializeD3D() Q_DECL_OVERRIDE;
+    void resizeD3D(const QSize &size) Q_DECL_OVERRIDE;
+    void paintD3D() Q_DECL_OVERRIDE;
+    void afterPresent() Q_DECL_OVERRIDE;
+
+private:
+    Fence *f;
+    ComPtr<ID3D12GraphicsCommandList> commandList;
+    float green;
+};
diff --git a/features/hlsl.prf b/features/hlsl.prf
new file mode 100644
index 0000000..0fa27a7
--- /dev/null
+++ b/features/hlsl.prf
@@ -0,0 +1,10 @@
+for (SHADER, HLSL_SHADERS) {
+    INPUT = $$eval($${SHADER}.input)
+    fxc_$${SHADER}.input = $$INPUT
+    fxc_$${SHADER}.commands = fxc.exe /nologo /E $$eval($${SHADER}.entry) /T $$eval($${SHADER}.type) /Fh ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME}
+    fxc_$${SHADER}.output = $$eval($${SHADER}.header)
+    fxc_$${SHADER}.dependency_type = TYPE_C
+    fxc_$${SHADER}.variable_out = HEADERS
+    fxc_$${SHADER}.CONFIG += target_predeps
+    QMAKE_EXTRA_COMPILERS += fxc_$${SHADER}
+}
diff --git a/qd3d12window.pro b/qd3d12window.pro
new file mode 100644
index 0000000..58c33f2
--- /dev/null
+++ b/qd3d12window.pro
@@ -0,0 +1 @@
+load(qt_parts)
diff --git a/src/d3d12window/d3d12window.pro b/src/d3d12window/d3d12window.pro
new file mode 100644
index 0000000..380947a
--- /dev/null
+++ b/src/d3d12window/d3d12window.pro
@@ -0,0 +1,14 @@
+TEMPLATE = lib
+QT += core-private gui-private
+TARGET = QtD3D12Window
+
+load(qt_module)
+
+DEFINES += QD3D12_BUILD_DLL
+
+SOURCES += $$PWD/qd3d12window.cpp
+
+HEADERS += $$PWD/qd3d12window.h \
+           $$PWD/qd3d12windowglobal.h
+
+LIBS += -ldxgi -ld3d12
diff --git a/src/d3d12window/qd3d12window.cpp b/src/d3d12window/qd3d12window.cpp
new file mode 100644
index 0000000..27354a5
--- /dev/null
+++ b/src/d3d12window/qd3d12window.cpp
@@ -0,0 +1,677 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qd3d12window.h"
+#include <QtGui/private/qpaintdevicewindow_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QD3D12WindowPrivate : public QPaintDeviceWindowPrivate
+{
+    Q_DECLARE_PUBLIC(QD3D12Window)
+
+public:
+    QD3D12WindowPrivate()
+        : initialized(false),
+          extraRenderTargetCount(0)
+    { }
+    ~QD3D12WindowPrivate();
+
+    void beginPaint(const QRegion &region) Q_DECL_OVERRIDE;
+    void flush(const QRegion &region) Q_DECL_OVERRIDE;
+
+    void initialize();
+    void setupRenderTargets();
+    void resize();
+    void deviceLost();
+    DXGI_SAMPLE_DESC makeSampleDesc(DXGI_FORMAT format, int samples);
+    ID3D12Resource *createOffscreenRenderTarget(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle,
+                                                const QSize &size, const float *clearColor, int samples);
+    ID3D12Resource *createDepthStencil(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle, const QSize &size, int samples);
+
+    bool initialized;
+    int swapChainBufferCount;
+    int extraRenderTargetCount;
+    ComPtr<ID3D12Device> device;
+    ComPtr<ID3D12CommandQueue> commandQueue;
+    ComPtr<IDXGISwapChain3> swapChain;
+    ComPtr<ID3D12DescriptorHeap> rtvHeap;
+    ComPtr<ID3D12DescriptorHeap> dsvHeap;
+    ComPtr<ID3D12Resource> renderTargets[2];
+    ComPtr<ID3D12Resource> depthStencil;
+    UINT rtvStride;
+    UINT dsvStride;
+    ComPtr<ID3D12CommandAllocator> commandAllocator;
+    ComPtr<ID3D12CommandAllocator> bundleAllocator;
+};
+
+static void getHardwareAdapter(IDXGIFactory1 *factory, IDXGIAdapter1 **outAdapter)
+{
+    ComPtr<IDXGIAdapter1> adapter;
+
+    for (int adapterIndex = 0; factory->EnumAdapters1(adapterIndex, &adapter) != DXGI_ERROR_NOT_FOUND; ++adapterIndex) {
+        DXGI_ADAPTER_DESC1 desc;
+        adapter->GetDesc1(&desc);
+
+        if (desc.Flags & DXGI_ADAPTER_FLAG_SOFTWARE)
+            continue;
+
+        if (SUCCEEDED(D3D12CreateDevice(adapter.Get(), D3D_FEATURE_LEVEL_11_0, _uuidof(ID3D12Device), Q_NULLPTR))) {
+            const QString name = QString::fromUtf16((char16_t *) desc.Description);
+            qDebug("Using adapter '%s'", qPrintable(name));
+            break;
+        }
+    }
+
+    *outAdapter = adapter.Detach();
+}
+
+void QD3D12WindowPrivate::initialize()
+{
+    Q_Q(QD3D12Window);
+
+    if (initialized)
+        return;
+
+    swapChainBufferCount = 2;
+
+    HWND hwnd = reinterpret_cast<HWND>(q->winId());
+
+    ComPtr<ID3D12Debug> debugController;
+    if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&debugController))))
+        debugController->EnableDebugLayer();
+
+    ComPtr<IDXGIFactory4> factory;
+    if (FAILED(CreateDXGIFactory2(0, IID_PPV_ARGS(&factory)))) {
+        qWarning("Failed to create DXGI");
+        return;
+    }
+
+    ComPtr<IDXGIAdapter1> adapter;
+    getHardwareAdapter(factory.Get(), &adapter);
+
+    bool warp = true;
+    if (adapter) {
+        HRESULT hr = D3D12CreateDevice(adapter.Get(), D3D_FEATURE_LEVEL_11_0, IID_PPV_ARGS(&device));
+        if (SUCCEEDED(hr))
+            warp = false;
+        else
+            qWarning("Failed to create device: 0x%x", hr);
+    } else {
+        qWarning("No usable hardware adapters found");
+    }
+
+    if (warp) {
+        qDebug("Using WARP");
+        ComPtr<IDXGIAdapter> warpAdapter;
+        factory->EnumWarpAdapter(IID_PPV_ARGS(&warpAdapter));
+        HRESULT hr = D3D12CreateDevice(warpAdapter.Get(), D3D_FEATURE_LEVEL_11_0, IID_PPV_ARGS(&device));
+        if (FAILED(hr)) {
+            qWarning("Failed to create WARP device: 0x%x", hr);
+            return;
+        }
+    }
+
+    D3D12_COMMAND_QUEUE_DESC queueDesc = {};
+    queueDesc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
+
+    if (FAILED(device->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&commandQueue)))) {
+        qWarning("Failed to create command queue");
+        return;
+    }
+
+    DXGI_SWAP_CHAIN_DESC swapChainDesc = {};
+    swapChainDesc.BufferCount = swapChainBufferCount;
+    swapChainDesc.BufferDesc.Width = q->width() * q->devicePixelRatio();
+    swapChainDesc.BufferDesc.Height = q->height() * q->devicePixelRatio();
+    swapChainDesc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD; // D3D12 requires the flip model
+    swapChainDesc.OutputWindow = hwnd;
+    swapChainDesc.SampleDesc.Count = 1; // Flip does not support MSAA so no choice here
+    swapChainDesc.Windowed = TRUE;
+
+    ComPtr<IDXGISwapChain> baseSwapChain;
+    HRESULT hr = factory->CreateSwapChain(commandQueue.Get(), &swapChainDesc, &baseSwapChain);
+    if (FAILED(hr)) {
+        qWarning("Failed to create swap chain: 0x%x", hr);
+        return;
+    }
+    if (FAILED(baseSwapChain.As(&swapChain))) {
+        qWarning("Failed to cast swap chain");
+        return;
+    }
+
+    factory->MakeWindowAssociation(hwnd, DXGI_MWA_NO_ALT_ENTER);
+
+    if (FAILED(device->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&commandAllocator)))) {
+        qWarning("Failed to create command allocator");
+        return;
+    }
+
+    if (FAILED(device->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_BUNDLE, IID_PPV_ARGS(&bundleAllocator)))) {
+        qWarning("Failed to create command bundle allocator");
+        return;
+    }
+
+    D3D12_DESCRIPTOR_HEAP_DESC rtvHeapDesc = {};
+    rtvHeapDesc.NumDescriptors = swapChainBufferCount + extraRenderTargetCount;
+    rtvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
+    if (FAILED(device->CreateDescriptorHeap(&rtvHeapDesc, IID_PPV_ARGS(&rtvHeap)))) {
+        qWarning("Failed to create render target view descriptor heap");
+        return;
+    }
+    rtvStride = device->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
+
+    D3D12_DESCRIPTOR_HEAP_DESC dsvHeapDesc = {};
+    dsvHeapDesc.NumDescriptors = 1 + extraRenderTargetCount;
+    dsvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_DSV;
+    if (FAILED(device->CreateDescriptorHeap(&dsvHeapDesc, IID_PPV_ARGS(&dsvHeap)))) {
+        qWarning("Failed to create depth stencil heap");
+        return;
+    }
+    dsvStride = device->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_DSV);
+
+    setupRenderTargets();
+
+    initialized = true;
+
+    q->initializeD3D();
+}
+
+DXGI_SAMPLE_DESC QD3D12WindowPrivate::makeSampleDesc(DXGI_FORMAT format, int samples)
+{
+    DXGI_SAMPLE_DESC sampleDesc;
+    sampleDesc.Count = 1;
+    sampleDesc.Quality = 0;
+
+    if (samples > 1) {
+        D3D12_FEATURE_DATA_MULTISAMPLE_QUALITY_LEVELS msaaInfo = {};
+        msaaInfo.Format = format;
+        msaaInfo.SampleCount = samples;
+        if (SUCCEEDED(device->CheckFeatureSupport(D3D12_FEATURE_MULTISAMPLE_QUALITY_LEVELS, &msaaInfo, sizeof(msaaInfo)))) {
+            if (msaaInfo.NumQualityLevels > 0) {
+                sampleDesc.Count = samples;
+                sampleDesc.Quality = msaaInfo.NumQualityLevels - 1;
+            } else {
+                qWarning("No quality levels for multisampling?");
+            }
+        } else {
+            qWarning("Failed to query multisample quality levels");
+        }
+    }
+
+    return sampleDesc;
+}
+
+ID3D12Resource *QD3D12WindowPrivate::createOffscreenRenderTarget(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle,
+                                                                 const QSize &size, const float *clearColor, int samples)
+{
+    D3D12_CLEAR_VALUE clearValue = {};
+    clearValue.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    if (clearColor)
+        memcpy(clearValue.Color, clearColor, 4 * sizeof(float));
+
+    D3D12_HEAP_PROPERTIES heapProp = {};
+    heapProp.Type = D3D12_HEAP_TYPE_DEFAULT;
+
+    D3D12_RESOURCE_DESC rtDesc = {};
+    rtDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
+    rtDesc.Width = size.width();
+    rtDesc.Height = size.height();
+    rtDesc.DepthOrArraySize = 1;
+    rtDesc.MipLevels = 1;
+    rtDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    rtDesc.SampleDesc = makeSampleDesc(rtDesc.Format, samples); // MSAA works here, unlike the backbuffer
+    rtDesc.Flags = D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
+
+    ID3D12Resource *resource = Q_NULLPTR;
+    if (FAILED(device->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &rtDesc,
+                                               D3D12_RESOURCE_STATE_RENDER_TARGET, &clearValue, IID_PPV_ARGS(&resource)))) {
+        qWarning("Failed to create offscreen render target of size %dx%d", size.width(), size.height());
+        return Q_NULLPTR;
+    }
+
+    device->CreateRenderTargetView(resource, Q_NULLPTR, viewHandle);
+
+    return resource;
+}
+
+ID3D12Resource *QD3D12WindowPrivate::createDepthStencil(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle, const QSize &size, int samples)
+{
+    D3D12_CLEAR_VALUE depthClearValue = {};
+    depthClearValue.Format = DXGI_FORMAT_D32_FLOAT;
+    depthClearValue.DepthStencil.Depth = 1.0f;
+    depthClearValue.DepthStencil.Stencil = 0;
+
+    D3D12_HEAP_PROPERTIES heapProp = {};
+    heapProp.Type = D3D12_HEAP_TYPE_DEFAULT;
+
+    D3D12_RESOURCE_DESC bufDesc = {};
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
+    bufDesc.Width = size.width();
+    bufDesc.Height = size.height();
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_D32_FLOAT;
+    bufDesc.SampleDesc = makeSampleDesc(bufDesc.Format, samples);
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
+    bufDesc.Flags = D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL;
+
+    ID3D12Resource *resource = Q_NULLPTR;
+    if (FAILED(device->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                               D3D12_RESOURCE_STATE_DEPTH_WRITE, &depthClearValue, IID_PPV_ARGS(&resource)))) {
+        qWarning("Failed to create depth-stencil buffer of size %dx%d", size.width(), size.height());
+        return Q_NULLPTR;
+    }
+
+    D3D12_DEPTH_STENCIL_VIEW_DESC depthStencilDesc = {};
+    depthStencilDesc.Format = DXGI_FORMAT_D32_FLOAT;
+    depthStencilDesc.ViewDimension = bufDesc.SampleDesc.Count <= 1 ? D3D12_DSV_DIMENSION_TEXTURE2D : D3D12_DSV_DIMENSION_TEXTURE2DMS;
+
+    device->CreateDepthStencilView(resource, &depthStencilDesc, viewHandle);
+
+    return resource;
+}
+
+void QD3D12WindowPrivate::setupRenderTargets()
+{
+    Q_Q(QD3D12Window);
+
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle(rtvHeap->GetCPUDescriptorHandleForHeapStart());
+    for (int i = 0; i < swapChainBufferCount; ++i) {
+        if (FAILED(swapChain->GetBuffer(i, IID_PPV_ARGS(&renderTargets[i])))) {
+            qWarning("Failed to get buffer %d from swap chain", i);
+            return;
+        }
+        device->CreateRenderTargetView(renderTargets[i].Get(), Q_NULLPTR, rtvHandle);
+        rtvHandle.ptr += rtvStride;
+    }
+
+    ID3D12Resource *ds = createDepthStencil(dsvHeap->GetCPUDescriptorHandleForHeapStart(), q->size(), 0);
+    if (ds)
+        depthStencil.Attach(ds);
+}
+
+void QD3D12WindowPrivate::resize()
+{
+    Q_Q(QD3D12Window);
+
+    if (!initialized)
+        return;
+
+    // Clear these, otherwise resizing will fail.
+    depthStencil = Q_NULLPTR;
+    for (int i = 0; i < swapChainBufferCount; ++i)
+        renderTargets[i] = Q_NULLPTR;
+
+    HRESULT hr = swapChain->ResizeBuffers(swapChainBufferCount, q->width(), q->height(), DXGI_FORMAT_R8G8B8A8_UNORM, 0);
+    if (hr == DXGI_ERROR_DEVICE_REMOVED || hr == DXGI_ERROR_DEVICE_RESET) {
+        deviceLost();
+        return;
+    } else if (FAILED(hr)) {
+        qWarning("Failed to resize buffers: 0x%x", hr);
+        return;
+    }
+
+    setupRenderTargets();
+}
+
+void QD3D12WindowPrivate::deviceLost()
+{
+    Q_Q(QD3D12Window);
+    qWarning("D3D device lost");
+
+    // Release all resources. This is important because otherwise reinitialization may fail.
+
+    q->releaseD3D();
+
+    bundleAllocator = Q_NULLPTR;
+    commandAllocator = Q_NULLPTR;
+    rtvStride = dsvStride = 0;
+    depthStencil = Q_NULLPTR;
+    for (int i = 0; i < swapChainBufferCount; ++i)
+        renderTargets[i] = Q_NULLPTR;
+    dsvHeap = Q_NULLPTR;
+    rtvHeap = Q_NULLPTR;
+    commandQueue = Q_NULLPTR;
+    swapChain = Q_NULLPTR;
+    device = Q_NULLPTR;
+
+    initialized = false;
+    initialize();
+}
+
+QD3D12WindowPrivate::~QD3D12WindowPrivate()
+{
+}
+
+void QD3D12WindowPrivate::beginPaint(const QRegion &region)
+{
+    Q_UNUSED(region);
+
+    initialize();
+}
+
+void QD3D12WindowPrivate::flush(const QRegion &region)
+{
+    Q_Q(QD3D12Window);
+    Q_UNUSED(region);
+
+    HRESULT hr = swapChain->Present(1, 0);
+    if (hr == DXGI_ERROR_DEVICE_REMOVED || hr == DXGI_ERROR_DEVICE_RESET) {
+        deviceLost();
+        return;
+    } else if (FAILED(hr)) {
+        qWarning("Present failed: 0x%x", hr);
+        return;
+    }
+
+    q->afterPresent();
+}
+
+QD3D12Window::QD3D12Window(QWindow *parent)
+    : QPaintDeviceWindow(*(new QD3D12WindowPrivate), parent)
+{
+    setSurfaceType(QSurface::OpenGLSurface);
+}
+
+void QD3D12Window::setExtraRenderTargetCount(int count)
+{
+    Q_D(QD3D12Window);
+    if (d->initialized) {
+        qWarning("setExtraRenderTargetCount: Already initialized, request ignored.");
+        return;
+    }
+    d->extraRenderTargetCount = qMax(0, count);
+}
+
+void QD3D12Window::paintEvent(QPaintEvent *event)
+{
+    Q_UNUSED(event);
+
+    paintD3D();
+}
+
+void QD3D12Window::resizeEvent(QResizeEvent *event)
+{
+    Q_UNUSED(event);
+    Q_D(QD3D12Window);
+
+    if (!isExposed() || size().isEmpty())
+        return;
+
+    d->resize();
+    resizeD3D(size());
+    paintD3D();
+    afterPresent();
+}
+
+ID3D12Device *QD3D12Window::device() const
+{
+    Q_D(const QD3D12Window);
+    return d->device.Get();
+}
+
+ID3D12CommandQueue *QD3D12Window::commandQueue() const
+{
+    Q_D(const QD3D12Window);
+    return d->commandQueue.Get();
+}
+
+ID3D12CommandAllocator *QD3D12Window::commandAllocator() const
+{
+    Q_D(const QD3D12Window);
+    return d->commandAllocator.Get();
+}
+
+ID3D12CommandAllocator *QD3D12Window::bundleAllocator() const
+{
+    Q_D(const QD3D12Window);
+    return d->bundleAllocator.Get();
+}
+
+QD3D12Window::Fence *QD3D12Window::createFence() const
+{
+    Q_D(const QD3D12Window);
+    Fence *f = new Fence;
+    if (FAILED(d->device->CreateFence(f->value, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&f->fence)))) {
+        qWarning("Failed to create fence");
+        return f;
+    }
+    f->event = CreateEvent(Q_NULLPTR, FALSE, FALSE, Q_NULLPTR);
+    return f;
+}
+
+void QD3D12Window::waitForGPU(Fence *f) const
+{
+    Q_D(const QD3D12Window);
+    const UINT64 newValue = f->value.fetchAndAddAcquire(1) + 1;
+    d->commandQueue->Signal(f->fence.Get(), newValue);
+    if (f->fence->GetCompletedValue() < newValue) {
+        if (FAILED(f->fence->SetEventOnCompletion(newValue, f->event))) {
+            qWarning("SetEventOnCompletion failed");
+            return;
+        }
+        WaitForSingleObject(f->event, INFINITE);
+    }
+}
+
+void QD3D12Window::transitionResource(ID3D12Resource *resource, ID3D12GraphicsCommandList *commandList,
+                                      D3D12_RESOURCE_STATES before, D3D12_RESOURCE_STATES after) const
+{
+    D3D12_RESOURCE_BARRIER barrier;
+    barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
+    barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
+    barrier.Transition.pResource = resource;
+    barrier.Transition.StateBefore = before;
+    barrier.Transition.StateAfter = after;
+    barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
+
+    commandList->ResourceBarrier(1, &barrier);
+}
+
+void QD3D12Window::uavBarrier(ID3D12Resource *resource, ID3D12GraphicsCommandList *commandList) const
+{
+    D3D12_RESOURCE_BARRIER barrier = {};
+    barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_UAV;
+    barrier.UAV.pResource = resource;
+
+    commandList->ResourceBarrier(1, &barrier);
+}
+
+ID3D12Resource *QD3D12Window::backBufferRenderTarget() const
+{
+    Q_D(const QD3D12Window);
+    return d->renderTargets[d->swapChain->GetCurrentBackBufferIndex()].Get();
+}
+
+D3D12_CPU_DESCRIPTOR_HANDLE QD3D12Window::backBufferRenderTargetCPUHandle() const
+{
+    Q_D(const QD3D12Window);
+    const int frameIndex = d->swapChain->GetCurrentBackBufferIndex();
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle(d->rtvHeap->GetCPUDescriptorHandleForHeapStart());
+    rtvHandle.ptr += frameIndex * d->rtvStride;
+    return rtvHandle;
+}
+
+D3D12_CPU_DESCRIPTOR_HANDLE QD3D12Window::depthStencilCPUHandle() const
+{
+    Q_D(const QD3D12Window);
+    return d->dsvHeap->GetCPUDescriptorHandleForHeapStart();
+}
+
+D3D12_CPU_DESCRIPTOR_HANDLE QD3D12Window::extraRenderTargetCPUHandle(int idx) const
+{
+    Q_D(const QD3D12Window);
+    Q_ASSERT(idx >= 0 && idx < d->extraRenderTargetCount);
+    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle(d->rtvHeap->GetCPUDescriptorHandleForHeapStart());
+    rtvHandle.ptr += (d->swapChainBufferCount + idx) * d->rtvStride;
+    return rtvHandle;
+}
+
+D3D12_CPU_DESCRIPTOR_HANDLE QD3D12Window::extraDepthStencilCPUHandle(int idx) const
+{
+    Q_D(const QD3D12Window);
+    Q_ASSERT(idx >= 0 && idx < d->extraRenderTargetCount);
+    D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle(d->dsvHeap->GetCPUDescriptorHandleForHeapStart());
+    dsvHandle.ptr += (1 + idx) * d->dsvStride;
+    return dsvHandle;
+}
+
+ID3D12Resource *QD3D12Window::createExtraRenderTargetAndView(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle,
+                                                             const QSize &size,
+                                                             const float *clearColor,
+                                                             int samples)
+{
+    Q_D(QD3D12Window);
+    return d->createOffscreenRenderTarget(viewHandle, size, clearColor, samples);
+}
+
+ID3D12Resource *QD3D12Window::createExtraDepthStencilAndView(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle,
+                                                             const QSize &size,
+                                                             int samples)
+{
+    Q_D(QD3D12Window);
+    return d->createDepthStencil(viewHandle, size, samples);
+}
+
+quint32 QD3D12Window::alignedCBSize(quint32 size) const
+{
+    return (size + D3D12_CONSTANT_BUFFER_DATA_PLACEMENT_ALIGNMENT - 1) & ~(D3D12_CONSTANT_BUFFER_DATA_PLACEMENT_ALIGNMENT - 1);
+}
+
+quint32 QD3D12Window::alignedTexturePitch(quint32 rowPitch) const
+{
+    return (rowPitch + D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1) & ~(D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1);
+}
+
+quint32 QD3D12Window::alignedTextureOffset(quint32 offset) const
+{
+    return (offset + D3D12_TEXTURE_DATA_PLACEMENT_ALIGNMENT - 1) & ~(D3D12_TEXTURE_DATA_PLACEMENT_ALIGNMENT - 1);
+}
+
+QImage QD3D12Window::readbackRGBA8888(ID3D12Resource *rt, D3D12_RESOURCE_STATES rtState, ID3D12GraphicsCommandList *commandList)
+{
+    ComPtr<ID3D12Resource> readbackBuf;
+
+    D3D12_RESOURCE_DESC rtDesc = rt->GetDesc();
+    UINT64 textureByteSize = 0;
+    D3D12_PLACED_SUBRESOURCE_FOOTPRINT textureLayout = {};
+    device()->GetCopyableFootprints(&rtDesc, 0, 1, 0, &textureLayout, Q_NULLPTR, Q_NULLPTR, &textureByteSize);
+
+    D3D12_HEAP_PROPERTIES heapProp = {};
+    heapProp.Type = D3D12_HEAP_TYPE_READBACK;
+
+    D3D12_RESOURCE_DESC bufDesc = {};
+    bufDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+    bufDesc.Width = textureByteSize;
+    bufDesc.Height = 1;
+    bufDesc.DepthOrArraySize = 1;
+    bufDesc.MipLevels = 1;
+    bufDesc.Format = DXGI_FORMAT_UNKNOWN;
+    bufDesc.SampleDesc.Count = 1;
+    bufDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+
+    if (FAILED(device()->CreateCommittedResource(&heapProp, D3D12_HEAP_FLAG_NONE, &bufDesc,
+                                            D3D12_RESOURCE_STATE_COPY_DEST, Q_NULLPTR, IID_PPV_ARGS(&readbackBuf)))) {
+        qWarning("Failed to create committed resource (readback buffer)");
+        return QImage();
+    }
+
+    D3D12_TEXTURE_COPY_LOCATION dstLoc;
+    dstLoc.pResource = readbackBuf.Get();
+    dstLoc.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
+    dstLoc.PlacedFootprint = textureLayout;
+    D3D12_TEXTURE_COPY_LOCATION srcLoc;
+    srcLoc.pResource = rt;
+    srcLoc.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
+    srcLoc.SubresourceIndex = 0;
+
+    transitionResource(rt, commandList, rtState, D3D12_RESOURCE_STATE_COPY_SOURCE);
+    commandList->CopyTextureRegion(&dstLoc, 0, 0, 0, &srcLoc, Q_NULLPTR);
+    transitionResource(rt, commandList, D3D12_RESOURCE_STATE_COPY_SOURCE, rtState);
+    commandList->Close();
+
+    ID3D12CommandList *commandLists[] = { commandList };
+    commandQueue()->ExecuteCommandLists(_countof(commandLists), commandLists);
+    QScopedPointer<Fence> f(createFence());
+    waitForGPU(f.data());
+
+    QImage img(rtDesc.Width, rtDesc.Height, QImage::Format_RGBA8888);
+    quint8 *p = Q_NULLPTR;
+    D3D12_RANGE readRange = { 0, 0 };
+    if (FAILED(readbackBuf->Map(0, &readRange, reinterpret_cast<void **>(&p)))) {
+        qWarning("Mapping the readback buffer failed");
+        return QImage();
+    }
+    for (UINT y = 0; y < rtDesc.Height; ++y) {
+        quint8 *dst = img.scanLine(y);
+        memcpy(dst, p, rtDesc.Width * 4);
+        p += textureLayout.Footprint.RowPitch;
+    }
+    readbackBuf->Unmap(0, Q_NULLPTR);
+
+    return img;
+}
+
+void QD3D12Window::initializeD3D()
+{
+}
+
+void QD3D12Window::releaseD3D()
+{
+}
+
+void QD3D12Window::resizeD3D(const QSize &)
+{
+}
+
+void QD3D12Window::paintD3D()
+{
+}
+
+void QD3D12Window::afterPresent()
+{
+}
+
+QD3D12Window::Fence::~Fence()
+{
+    if (event)
+        CloseHandle(event);
+}
+
+QT_END_NAMESPACE
diff --git a/src/d3d12window/qd3d12window.h b/src/d3d12window/qd3d12window.h
new file mode 100644
index 0000000..0fc455f
--- /dev/null
+++ b/src/d3d12window/qd3d12window.h
@@ -0,0 +1,127 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QD3D12WINDOW_H
+#define QD3D12WINDOW_H
+
+#include <QAtomicInt>
+#include <QPaintDeviceWindow>
+#include <QImage>
+#include <QtD3D12Window/qd3d12windowglobal.h>
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <d3d12.h>
+#include <dxgi1_4.h>
+#include <wrl/client.h>
+
+using namespace Microsoft::WRL;
+
+QT_BEGIN_NAMESPACE
+
+class QD3D12WindowPrivate;
+
+class QD3D12_EXPORT QD3D12Window : public QPaintDeviceWindow
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QD3D12Window)
+
+public:
+    struct QD3D12_EXPORT Fence {
+        Fence() : event(Q_NULLPTR) { }
+        ~Fence();
+        ComPtr<ID3D12Fence> fence;
+        HANDLE event;
+        QAtomicInt value;
+    private:
+        Q_DISABLE_COPY(Fence)
+    };
+
+    QD3D12Window(QWindow *parent = Q_NULLPTR);
+
+    void setExtraRenderTargetCount(int count);
+
+    virtual void initializeD3D();
+    virtual void releaseD3D();
+    virtual void resizeD3D(const QSize &size);
+    virtual void paintD3D();
+    virtual void afterPresent();
+
+    ID3D12Device *device() const;
+    ID3D12CommandQueue *commandQueue() const;
+    ID3D12CommandAllocator *commandAllocator() const;
+    ID3D12CommandAllocator *bundleAllocator() const;
+
+    Fence *createFence() const;
+    void waitForGPU(Fence *f) const;
+
+    void transitionResource(ID3D12Resource *resource, ID3D12GraphicsCommandList *commandList,
+                            D3D12_RESOURCE_STATES before, D3D12_RESOURCE_STATES after) const;
+    void uavBarrier(ID3D12Resource *resource, ID3D12GraphicsCommandList *commandList) const;
+
+    ID3D12Resource *backBufferRenderTarget() const;
+    D3D12_CPU_DESCRIPTOR_HANDLE backBufferRenderTargetCPUHandle() const;
+
+    D3D12_CPU_DESCRIPTOR_HANDLE depthStencilCPUHandle() const;
+
+    D3D12_CPU_DESCRIPTOR_HANDLE extraRenderTargetCPUHandle(int idx) const;
+    D3D12_CPU_DESCRIPTOR_HANDLE extraDepthStencilCPUHandle(int idx) const;
+
+    ID3D12Resource *createExtraRenderTargetAndView(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle,
+                                                   const QSize &size,
+                                                   const float *clearColor = Q_NULLPTR,
+                                                   int samples = 0);
+    ID3D12Resource *createExtraDepthStencilAndView(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle,
+                                                   const QSize &size,
+                                                   int samples = 0);
+
+    quint32 alignedCBSize(quint32 size) const;
+    quint32 alignedTexturePitch(quint32 rowPitch) const;
+    quint32 alignedTextureOffset(quint32 offset) const;
+
+    QImage readbackRGBA8888(ID3D12Resource *rt, D3D12_RESOURCE_STATES rtState, ID3D12GraphicsCommandList *commandList);
+
+protected:
+    void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
+    void resizeEvent(QResizeEvent *) Q_DECL_OVERRIDE;
+
+private:
+    Q_DISABLE_COPY(QD3D12Window)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/d3d12window/qd3d12windowglobal.h b/src/d3d12window/qd3d12windowglobal.h
new file mode 100644
index 0000000..8fdc923
--- /dev/null
+++ b/src/d3d12window/qd3d12windowglobal.h
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtD3D12Window module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QD3D12WINDOWGLOBAL_H
+#define QD3D12WINDOWGLOBAL_H
+
+#include <qglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+#if defined(QD3D12_BUILD_DLL)
+#define QD3D12_EXPORT Q_DECL_EXPORT
+#else
+#define QD3D12_EXPORT Q_DECL_IMPORT
+#endif
+
+QT_END_NAMESPACE
+
+#endif // QD3D12WINDOWGLOBAL_H
diff --git a/src/src.pro b/src/src.pro
new file mode 100644
index 0000000..0baa931
--- /dev/null
+++ b/src/src.pro
@@ -0,0 +1,2 @@
+TEMPLATE = subdirs
+SUBDIRS += d3d12window
diff --git a/sync.profile b/sync.profile
new file mode 100644
index 0000000..b5b52c8
--- /dev/null
+++ b/sync.profile
@@ -0,0 +1,6 @@
+%modules = (
+    "QtD3D12Window" => "$basedir/src/d3d12window",
+);
+%dependencies = (
+    "qtbase" => "refs/heads/stable",
+);