1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#include "graph.hpp"
#include "application.hpp"
#include "exception.hpp"
namespace cru::graph {
using Microsoft::WRL::ComPtr;
WindowRenderTarget::WindowRenderTarget(GraphManager* graph_manager, HWND hwnd) {
this->graph_manager_ = graph_manager;
const auto d3d11_device = graph_manager->GetD3D11Device();
const auto dxgi_factory = graph_manager->GetDxgiFactory();
// Allocate a descriptor.
DXGI_SWAP_CHAIN_DESC1 swap_chain_desc = {0};
swap_chain_desc.Width = 0; // use automatic sizing
swap_chain_desc.Height = 0;
swap_chain_desc.Format =
DXGI_FORMAT_B8G8R8A8_UNORM; // this is the most common swapchain format
swap_chain_desc.Stereo = false;
swap_chain_desc.SampleDesc.Count = 1; // don't use multi-sampling
swap_chain_desc.SampleDesc.Quality = 0;
swap_chain_desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swap_chain_desc.BufferCount = 2; // use double buffering to enable flip
swap_chain_desc.Scaling = DXGI_SCALING_NONE;
swap_chain_desc.SwapEffect =
DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL; // all apps must use this SwapEffect
swap_chain_desc.Flags = 0;
// Get the final swap chain for this window from the DXGI factory.
ThrowIfFailed(dxgi_factory->CreateSwapChainForHwnd(
d3d11_device.Get(), hwnd, &swap_chain_desc, nullptr, nullptr,
&dxgi_swap_chain_));
CreateTargetBitmap();
}
WindowRenderTarget::~WindowRenderTarget() {}
void WindowRenderTarget::ResizeBuffer(const int width, const int height) {
const auto graph_manager = graph_manager_;
const auto d2d1_device_context = graph_manager->GetD2D1DeviceContext();
ComPtr<ID2D1Image> old_target;
d2d1_device_context->GetTarget(&old_target);
const auto target_this = old_target == this->target_bitmap_;
if (target_this) d2d1_device_context->SetTarget(nullptr);
old_target = nullptr;
target_bitmap_ = nullptr;
ThrowIfFailed(dxgi_swap_chain_->ResizeBuffers(0, width, height,
DXGI_FORMAT_UNKNOWN, 0));
CreateTargetBitmap();
if (target_this) d2d1_device_context->SetTarget(target_bitmap_.Get());
}
void WindowRenderTarget::SetAsTarget() {
GetD2DDeviceContext()->SetTarget(target_bitmap_.Get());
}
void WindowRenderTarget::Present() {
ThrowIfFailed(dxgi_swap_chain_->Present(1, 0));
}
void WindowRenderTarget::CreateTargetBitmap() {
// Direct2D needs the dxgi version of the backbuffer surface pointer.
ComPtr<IDXGISurface> dxgiBackBuffer;
ThrowIfFailed(dxgi_swap_chain_->GetBuffer(0, IID_PPV_ARGS(&dxgiBackBuffer)));
const auto dpi = graph_manager_->GetDpi();
auto bitmap_properties = D2D1::BitmapProperties1(
D2D1_BITMAP_OPTIONS_TARGET | D2D1_BITMAP_OPTIONS_CANNOT_DRAW,
D2D1::PixelFormat(DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_IGNORE),
dpi.x, dpi.y);
// Get a D2D surface from the DXGI back buffer to use as the D2D render
// target.
ThrowIfFailed(
graph_manager_->GetD2D1DeviceContext()->CreateBitmapFromDxgiSurface(
dxgiBackBuffer.Get(), &bitmap_properties, &target_bitmap_));
}
GraphManager* GraphManager::GetInstance() {
return Application::GetInstance()->ResolveSingleton<GraphManager>(
[](auto) { return new GraphManager{}; });
}
GraphManager::GraphManager() {
UINT creation_flags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
#ifdef CRU_DEBUG
creation_flags |= D3D11_CREATE_DEVICE_DEBUG;
#endif
const D3D_FEATURE_LEVEL feature_levels[] = {
D3D_FEATURE_LEVEL_11_1, D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0, D3D_FEATURE_LEVEL_9_3, D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1};
ThrowIfFailed(D3D11CreateDevice(
nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, creation_flags,
feature_levels, ARRAYSIZE(feature_levels), D3D11_SDK_VERSION,
&d3d11_device_, nullptr, &d3d11_device_context_));
Microsoft::WRL::ComPtr<IDXGIDevice> dxgi_device;
ThrowIfFailed(d3d11_device_.As(&dxgi_device));
ThrowIfFailed(D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED,
__uuidof(ID2D1Factory1), &d2d1_factory_));
ThrowIfFailed(d2d1_factory_->CreateDevice(dxgi_device.Get(), &d2d1_device_));
ThrowIfFailed(d2d1_device_->CreateDeviceContext(
D2D1_DEVICE_CONTEXT_OPTIONS_NONE, &d2d1_device_context_));
// Identify the physical adapter (GPU or card) this device is runs on.
ComPtr<IDXGIAdapter> dxgi_adapter;
ThrowIfFailed(dxgi_device->GetAdapter(&dxgi_adapter));
// Get the factory object that created the DXGI device.
ThrowIfFailed(dxgi_adapter->GetParent(IID_PPV_ARGS(&dxgi_factory_)));
ThrowIfFailed(DWriteCreateFactory(
DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory),
reinterpret_cast<IUnknown**>(dwrite_factory_.GetAddressOf())));
dwrite_factory_->GetSystemFontCollection(&dwrite_system_font_collection_);
}
GraphManager::~GraphManager() {}
std::shared_ptr<WindowRenderTarget> GraphManager::CreateWindowRenderTarget(
HWND hwnd) {
return std::make_shared<WindowRenderTarget>(this, hwnd);
}
Dpi GraphManager::GetDpi() const {
Dpi dpi;
d2d1_factory_->GetDesktopDpi(&dpi.x, &dpi.y);
return dpi;
}
void GraphManager::ReloadSystemMetrics() {
ThrowIfFailed(d2d1_factory_->ReloadSystemMetrics());
}
Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> CreateSolidColorBrush(
const D2D1_COLOR_F& color) {
Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> brush;
ThrowIfFailed(GraphManager::GetInstance()
->GetD2D1DeviceContext()
->CreateSolidColorBrush(color, &brush));
return brush;
}
} // namespace cru::graph
|
