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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU 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.LGPL3 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-3.0.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 (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSGD3D12ENGINE_P_P_H
#define QSGD3D12ENGINE_P_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qsgd3d12engine_p.h"
#include <d3d12.h>
#include <dxgi1_4.h>
#include <wrl/client.h>
using namespace Microsoft::WRL;
// No moc-related features (Q_OBJECT, signals, etc.) can be used here to due
// moc-generated code failing to compile when combined with COM stuff.
QT_BEGIN_NAMESPACE
struct QSGD3D12DescriptorHandle
{
QSGD3D12DescriptorHandle() { cpu.ptr = 0; gpu.ptr = 0; }
D3D12_CPU_DESCRIPTOR_HANDLE cpu;
D3D12_GPU_DESCRIPTOR_HANDLE gpu;
};
class QSGD3D12DescriptorHeapManager
{
public:
void initialize(ID3D12Device *device);
void releaseResources();
enum Flag {
ShaderVisible = 0x01
};
Q_DECLARE_FLAGS(Flags, Flag)
QSGD3D12DescriptorHandle allocate(D3D12_DESCRIPTOR_HEAP_TYPE type, Flags flags = 0);
quint32 handleSize(D3D12_DESCRIPTOR_HEAP_TYPE type) const { return m_handleSizes[type]; }
private:
ID3D12Device *m_device = nullptr;
struct Heap {
D3D12_DESCRIPTOR_HEAP_TYPE type;
ComPtr<ID3D12DescriptorHeap> heap;
int count = 0;
QSGD3D12DescriptorHandle start;
quint32 handleSize;
};
QVector<Heap> m_heaps;
quint32 m_handleSizes[D3D12_DESCRIPTOR_HEAP_TYPE_NUM_TYPES];
};
class QSGD3D12DeviceManager
{
public:
ID3D12Device *ref();
void unref();
void deviceLossDetected();
IDXGIFactory4 *dxgi();
struct DeviceLossObserver {
virtual void deviceLost() = 0;
};
void registerDeviceLossObserver(DeviceLossObserver *observer);
private:
void ensureCreated();
ComPtr<ID3D12Device> m_device;
ComPtr<IDXGIFactory4> m_factory;
QAtomicInt m_ref;
QVector<DeviceLossObserver *> m_observers;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QSGD3D12DescriptorHeapManager::Flags)
struct QSGD3D12Fence
{
~QSGD3D12Fence() {
if (event)
CloseHandle(event);
}
ComPtr<ID3D12Fence> fence;
HANDLE event = nullptr;
QAtomicInt value;
};
class QSGD3D12EnginePrivate : public QSGD3D12DeviceManager::DeviceLossObserver
{
public:
void initialize(QWindow *w);
bool isInitialized() const { return initialized; }
void releaseResources();
void resize();
void beginFrame();
void endFrame();
void setPipelineState(const QSGD3D12PipelineState &pipelineState);
void setVertexBuffer(const quint8 *data, int size);
void setIndexBuffer(const quint8 *data, int size);
void setConstantBuffer(const quint8 *data, int size);
void markConstantBufferDirty(int offset, int size);
void queueViewport(const QRect &rect);
void queueScissor(const QRect &rect);
void queueSetRenderTarget();
void queueClearRenderTarget(const QColor &color);
void queueClearDepthStencil(float depthValue, quint8 stencilValue, QSGD3D12Engine::ClearFlags which);
void queueSetStencilRef(quint32 ref);
void queueDraw(QSGGeometry::DrawingMode mode, int count, int vboOffset, int vboStride,
int cboOffset,
int startIndexIndex, QSGD3D12Format indexFormat);
void present();
void waitGPU();
// the device is intentionally hidden here. all resources have to go
// through the engine and, unlike with GL, cannot just be created in random
// places due to the need for proper tracking, managing and releasing.
private:
void setupRenderTargets();
void deviceLost() override;
DXGI_SAMPLE_DESC makeSampleDesc(DXGI_FORMAT format, int samples);
ID3D12Resource *createDepthStencil(D3D12_CPU_DESCRIPTOR_HANDLE viewHandle, const QSize &size, int samples);
QSGD3D12Fence *createFence() const;
void waitForGPU(QSGD3D12Fence *f) const;
void transitionResource(ID3D12Resource *resource, ID3D12GraphicsCommandList *commandList,
D3D12_RESOURCE_STATES before, D3D12_RESOURCE_STATES after) const;
ID3D12Resource *createBuffer(int size);
ID3D12Resource *backBufferRT() const;
D3D12_CPU_DESCRIPTOR_HANDLE backBufferRTV() const;
struct StagingBufferRef {
const quint8 *p = nullptr;
int size = 0;
bool fullChange = true;
QVector<QPair<int, int> > dirty;
StagingBufferRef() { dirty.reserve(256); }
};
void updateBuffer(StagingBufferRef *br, ID3D12Resource *r, const char *dbgstr);
bool initialized = false;
QWindow *window = nullptr;
int swapChainBufferCount = 2;
ID3D12Device *device;
ComPtr<ID3D12CommandQueue> commandQueue;
ComPtr<IDXGISwapChain3> swapChain;
ComPtr<ID3D12Resource> renderTargets[2];
D3D12_CPU_DESCRIPTOR_HANDLE rtv0;
D3D12_CPU_DESCRIPTOR_HANDLE dsv;
ComPtr<ID3D12Resource> depthStencil;
ComPtr<ID3D12CommandAllocator> commandAllocator;
ComPtr<ID3D12CommandAllocator> bundleAllocator;
ComPtr<ID3D12GraphicsCommandList> commandList;
QSGD3D12DescriptorHeapManager descHeapManager;
QSGD3D12Fence *presentFence = nullptr;
StagingBufferRef vertexData;
StagingBufferRef indexData;
StagingBufferRef constantData;
ComPtr<ID3D12Resource> vertexBuffer;
ComPtr<ID3D12Resource> indexBuffer;
ComPtr<ID3D12Resource> constantBuffer;
QHash<QSGD3D12PipelineState, ComPtr<ID3D12PipelineState> > m_psoCache;
ComPtr<ID3D12RootSignature> m_rootSig;
QSGGeometry::DrawingMode m_drawingMode;
bool m_indexBufferSet;
};
QT_END_NAMESPACE
#endif
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