diff options
Diffstat (limited to 'CruUI/graph/graph.cpp')
| -rw-r--r-- | CruUI/graph/graph.cpp | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/CruUI/graph/graph.cpp b/CruUI/graph/graph.cpp new file mode 100644 index 00000000..4871c5f4 --- /dev/null +++ b/CruUI/graph/graph.cpp @@ -0,0 +1,233 @@ +#include "graph.h" + +#include "application.h" +#include "exception.h" + +namespace cru { + namespace 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() + { + UINT creation_flags = D3D11_CREATE_DEVICE_BGRA_SUPPORT; + +#ifdef _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_)) + ); + } + + GraphManager::~GraphManager() + { + + } + + std::shared_ptr<WindowRenderTarget> GraphManager::CreateWindowRenderTarget(HWND hwnd) + { + return std::make_shared<WindowRenderTarget>(this, hwnd); + } + + Dpi GraphManager::GetDpi() + { + Dpi dpi; + d2d1_factory_->GetDesktopDpi(&dpi.x, &dpi.y); + return dpi; + } + + void GraphManager::ReloadSystemMetrics() + { + ThrowIfFailed( + d2d1_factory_->ReloadSystemMetrics() + ); + } + + inline int DipToPixelInternal(float dip, float dpi) + { + return static_cast<int>(dip * dpi / 96.0f); + } + + int DipToPixelX(float dipX) + { + return DipToPixelInternal(dipX, Application::GetInstance()->GetGraphManager()->GetDpi().x); + } + + int DipToPixelY(float dipY) + { + return DipToPixelInternal(dipY, Application::GetInstance()->GetGraphManager()->GetDpi().y); + } + + inline float DipToPixelInternal(int pixel, float dpi) + { + return static_cast<float>(pixel) * 96.0f / dpi; + } + + float PixelToDipX(int pixelX) + { + return DipToPixelInternal(pixelX, Application::GetInstance()->GetGraphManager()->GetDpi().x); + } + + float PixelToDipY(int pixelY) + { + return DipToPixelInternal(pixelY, Application::GetInstance()->GetGraphManager()->GetDpi().y); + } + } +} |