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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwindowsdirect2dbackingstore.h"
#include "qwindowsdirect2dintegration.h"
#include "qwindowsdirect2dcontext.h"
#include "qwindowsdirect2dpaintdevice.h"
#include "qwindowsdirect2dbitmap.h"
#include "qwindowsdirect2ddevicecontext.h"
#include "qwindowswindow.h"
#include "qwindowscontext.h"
#include <QtGui/QWindow>
#include <QtCore/QDebug>
#include <dxgi1_2.h>
#include <d3d11.h>
#include <wrl.h>
using Microsoft::WRL::ComPtr;
QT_BEGIN_NAMESPACE
class QWindowsDirect2DBackingStorePrivate
{
public:
QWindowsDirect2DBackingStorePrivate() {}
ComPtr<IDXGISwapChain1> swapChain;
QSharedPointer<QWindowsDirect2DBitmap> backingStore;
QScopedPointer<QWindowsDirect2DPaintDevice> nativePaintDevice;
bool init(HWND hwnd)
{
DXGI_SWAP_CHAIN_DESC1 desc = {};
desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
desc.SampleDesc.Count = 1;
desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
desc.BufferCount = 1;
desc.SwapEffect = DXGI_SWAP_EFFECT_SEQUENTIAL;
HRESULT hr = QWindowsDirect2DContext::instance()->dxgiFactory()->CreateSwapChainForHwnd(
QWindowsDirect2DContext::instance()->d3dDevice(), // [in] IUnknown *pDevice
hwnd, // [in] HWND hWnd
&desc, // [in] const DXGI_SWAP_CHAIN_DESC1 *pDesc
NULL, // [in] const DXGI_SWAP_CHAIN_FULLSCREEN_DESC *pFullscreenDesc
NULL, // [in] IDXGIOutput *pRestrictToOutput
swapChain.ReleaseAndGetAddressOf()); // [out] IDXGISwapChain1 **ppSwapChain
if (FAILED(hr))
qWarning("%s: Could not create swap chain: %#x", __FUNCTION__, hr);
return SUCCEEDED(hr);
}
bool setupPaintDevice()
{
if (!backingStore) {
ComPtr<ID2D1DeviceContext> deviceContext;
ComPtr<IDXGISurface1> backBufferSurface;
ComPtr<ID2D1Bitmap1> backBufferBitmap;
HRESULT hr = QWindowsDirect2DContext::instance()->d2dDevice()->CreateDeviceContext(
D2D1_DEVICE_CONTEXT_OPTIONS_NONE,
deviceContext.ReleaseAndGetAddressOf());
if (FAILED(hr)) {
qWarning("%s: Couldn't create Direct2D Device context: %#x", __FUNCTION__, hr);
return false;
}
hr = swapChain->GetBuffer(0, IID_PPV_ARGS(&backBufferSurface));
if (FAILED(hr)) {
qWarning("%s: Could not query backbuffer for DXGI Surface: %#x", __FUNCTION__, hr);
return false;
}
hr = deviceContext->CreateBitmapFromDxgiSurface(backBufferSurface.Get(), NULL, backBufferBitmap.ReleaseAndGetAddressOf());
if (FAILED(hr)) {
qWarning("%s: Could not create Direct2D Bitmap from DXGI Surface: %#x", __FUNCTION__, hr);
return false;
}
backingStore.reset(new QWindowsDirect2DBitmap(backBufferBitmap.Get(), deviceContext.Get()));
}
if (!nativePaintDevice)
nativePaintDevice.reset(new QWindowsDirect2DPaintDevice(backingStore.data(), QInternal::Widget));
return true;
}
void releaseBackingStore()
{
nativePaintDevice.reset();
backingStore.reset();
}
QPaintDevice *paintDevice()
{
setupPaintDevice();
return nativePaintDevice.data();
}
void flush()
{
swapChain->Present(1, 0);
}
};
/*!
\class QWindowsDirect2DBackingStore
\brief Backing store for windows.
\internal
\ingroup qt-lighthouse-win
*/
QWindowsDirect2DBackingStore::QWindowsDirect2DBackingStore(QWindow *window)
: QPlatformBackingStore(window)
, d_ptr(new QWindowsDirect2DBackingStorePrivate)
{
}
bool QWindowsDirect2DBackingStore::init()
{
if (window()->surfaceType() == QSurface::RasterSurface) {
Q_D(QWindowsDirect2DBackingStore);
return d->init(windowsWindow()->handle());
}
return true;
}
QWindowsDirect2DBackingStore *QWindowsDirect2DBackingStore::create(QWindow *window)
{
QWindowsDirect2DBackingStore *result = new QWindowsDirect2DBackingStore(window);
if (!result->init()) {
delete result;
result = 0;
}
return result;
}
QWindowsDirect2DBackingStore::~QWindowsDirect2DBackingStore()
{
Q_D(QWindowsDirect2DBackingStore);
d->releaseBackingStore();
d->swapChain.Reset();
}
QPaintDevice *QWindowsDirect2DBackingStore::paintDevice()
{
QPaintDevice *result = 0;
if (window()->surfaceType() == QSurface::RasterSurface) {
Q_D(QWindowsDirect2DBackingStore);
result = d->paintDevice();
}
return result;
}
void QWindowsDirect2DBackingStore::flush(QWindow *, const QRegion &, const QPoint &)
{
if (window()->surfaceType() == QSurface::RasterSurface) {
Q_D(QWindowsDirect2DBackingStore);
d->flush();
}
}
void QWindowsDirect2DBackingStore::resize(const QSize &size, const QRegion ®ion)
{
Q_UNUSED(region);
if (window()->surfaceType() != QSurface::RasterSurface)
return;
Q_D(QWindowsDirect2DBackingStore);
d->releaseBackingStore();
QWindowsDirect2DContext::instance()->d3dDeviceContext()->ClearState();
HRESULT hr = d->swapChain->ResizeBuffers(0,
size.width(), size.height(),
DXGI_FORMAT_UNKNOWN,
0);
if (FAILED(hr))
qWarning("%s: Could not resize buffers: %#x", __FUNCTION__, hr);
}
QWindowsWindow *QWindowsDirect2DBackingStore::windowsWindow() const
{
if (const QWindow *w = window())
if (QPlatformWindow *pw = w->handle())
return static_cast<QWindowsWindow *>(pw);
return 0;
}
QT_END_NAMESPACE
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