Add QD3D12Window, a HLSL qmake rule and 8 examples

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

1 files changed, 127 insertions, 0 deletions

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