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/****************************************************************************
**
** Copyright (C) 2014 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 "qwindowsdirect2dcontext.h"
#include "qwindowsdirect2dwindow.h"
#include "qwindowsdirect2ddevicecontext.h"
#include "qwindowsdirect2dhelpers.h"
#include <d3d11.h>
#include <d2d1_1.h>
using Microsoft::WRL::ComPtr;
QT_BEGIN_NAMESPACE
QWindowsDirect2DWindow::QWindowsDirect2DWindow(QWindow *window, const QWindowsWindowData &data)
: QWindowsWindow(window, data)
, m_needsFullFlush(true)
{
if (window->type() == Qt::Desktop)
return; // No further handling for Qt::Desktop
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
handle(), // [in] HWND hWnd
&desc, // [in] const DXGI_SWAP_CHAIN_DESC1 *pDesc
NULL, // [in] const DXGI_SWAP_CHAIN_FULLSCREEN_DESC *pFullscreenDesc
NULL, // [in] IDXGIOutput *pRestrictToOutput
m_swapChain.ReleaseAndGetAddressOf()); // [out] IDXGISwapChain1 **ppSwapChain
if (FAILED(hr))
qWarning("%s: Could not create swap chain: %#x", __FUNCTION__, hr);
hr = QWindowsDirect2DContext::instance()->d2dDevice()->CreateDeviceContext(
D2D1_DEVICE_CONTEXT_OPTIONS_NONE,
m_deviceContext.GetAddressOf());
if (FAILED(hr))
qWarning("%s: Couldn't create Direct2D Device context: %#x", __FUNCTION__, hr);
}
QWindowsDirect2DWindow::~QWindowsDirect2DWindow()
{
}
void QWindowsDirect2DWindow::flush(QWindowsDirect2DBitmap *bitmap, const QRegion ®ion, const QPoint &offset)
{
DXGI_SWAP_CHAIN_DESC1 desc;
HRESULT hr = m_swapChain->GetDesc1(&desc);
QRect geom = geometry();
if (FAILED(hr) || (desc.Width != geom.width()) || (desc.Height != geom.height())) {
resizeSwapChain(geom.size());
m_swapChain->GetDesc1(&desc);
}
setupBitmap();
if (!m_bitmap)
return;
m_bitmap->deviceContext()->begin();
ID2D1DeviceContext *dc = m_bitmap->deviceContext()->get();
if (!m_needsFullFlush) {
QRegion clipped = region;
clipped &= QRect(0, 0, desc.Width, desc.Height);
foreach (const QRect &rect, clipped.rects()) {
QRectF rectF(rect);
dc->DrawBitmap(bitmap->bitmap(),
to_d2d_rect_f(rectF),
1.0,
D2D1_INTERPOLATION_MODE_LINEAR,
to_d2d_rect_f(rectF.translated(offset.x(), offset.y())));
}
} else {
QRectF rectF(0, 0, desc.Width, desc.Height);
dc->DrawBitmap(bitmap->bitmap(),
to_d2d_rect_f(rectF),
1.0,
D2D1_INTERPOLATION_MODE_LINEAR,
to_d2d_rect_f(rectF.translated(offset.x(), offset.y())));
m_needsFullFlush = false;
}
m_bitmap->deviceContext()->end();
m_swapChain->Present(0, 0);
}
void QWindowsDirect2DWindow::resizeSwapChain(const QSize &size)
{
if (!m_swapChain)
return;
m_bitmap.reset();
m_deviceContext->SetTarget(Q_NULLPTR);
HRESULT hr = m_swapChain->ResizeBuffers(0,
size.width(), size.height(),
DXGI_FORMAT_UNKNOWN,
0);
if (FAILED(hr))
qWarning("%s: Could not resize swap chain: %#x", __FUNCTION__, hr);
m_needsFullFlush = true;
}
void QWindowsDirect2DWindow::setupBitmap()
{
if (m_bitmap)
return;
if (!m_deviceContext)
return;
if (!m_swapChain)
return;
ComPtr<IDXGISurface1> backBufferSurface;
HRESULT hr = m_swapChain->GetBuffer(0, IID_PPV_ARGS(&backBufferSurface));
if (FAILED(hr)) {
qWarning("%s: Could not query backbuffer for DXGI Surface: %#x", __FUNCTION__, hr);
return;
}
ComPtr<ID2D1Bitmap1> backBufferBitmap;
hr = m_deviceContext->CreateBitmapFromDxgiSurface(backBufferSurface.Get(), NULL, backBufferBitmap.GetAddressOf());
if (FAILED(hr)) {
qWarning("%s: Could not create Direct2D Bitmap from DXGI Surface: %#x", __FUNCTION__, hr);
return;
}
m_bitmap.reset(new QWindowsDirect2DBitmap(backBufferBitmap.Get(), m_deviceContext.Get()));
}
QT_END_NAMESPACE
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