direct2d

问题 Is there any way to draw the content behind a window using directx. For example: the magnifier used by windows. I was trying to achieve the acrylic blur effect of windows 10. What I need to do is to capture the portion behind the window and blur it using direct 2D Gaussian Blur effect. So is there any way to get the backdrop (visual behind the window) using direct x? Note: i tried using magnifier api of windows and it is flickering the screen while resizing or moving the window Here is a

问题 Is there any way to draw the content behind a window using directx. For example: the magnifier used by windows. I was trying to achieve the acrylic blur effect of windows 10. What I need to do is to capture the portion behind the window and blur it using direct 2D Gaussian Blur effect. So is there any way to get the backdrop (visual behind the window) using direct x? Note: i tried using magnifier api of windows and it is flickering the screen while resizing or moving the window Here is a

问题 I need to create a transparent bitmap using Direct2D and draw, by using my device context, on it. ID2D1DeviceContext1* d2dContext = ... ID2D1Bitmap* pBitmap; d2dContext->CreateBitmap( bitmapSize, nullptr, 0, D2D1::BitmapProperties1( D2D1_BITMAP_OPTIONS_TARGET, D2D1::PixelFormat(DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_PREMULTIPLIED), dpiX, dpiY), &pBitmap); d2dContext->BeginDraw(); d2dContext->SetTarget(pBitmap); d2dContext->Clear(D2D1::ColorF(0, 0)); d2dContext->DrawLine(...); hr =

问题 I need to create a transparent bitmap using Direct2D and draw, by using my device context, on it. ID2D1DeviceContext1* d2dContext = ... ID2D1Bitmap* pBitmap; d2dContext->CreateBitmap( bitmapSize, nullptr, 0, D2D1::BitmapProperties1( D2D1_BITMAP_OPTIONS_TARGET, D2D1::PixelFormat(DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_PREMULTIPLIED), dpiX, dpiY), &pBitmap); d2dContext->BeginDraw(); d2dContext->SetTarget(pBitmap); d2dContext->Clear(D2D1::ColorF(0, 0)); d2dContext->DrawLine(...); hr =

问题 First, I want to say that I am a newbie in direct2d usage. My final purpose is to have per pixel transparent window. I have found this nice article : https://docs.microsoft.com/en-us/archive/msdn-magazine/2014/june/windows-with-c-high-performance-window-layering-using-the-windows-composition-engine and it seems that it answers my question. Before writing my per-pixel transparent window, I just tried to test the code in that link. But when I run the program, the disk that should be displayed

问题 I'm developing a C# application which uses SharpDx to render a map with Direct2d. This map get displayed with the D3DImage on a WPF host. On a local machine everything works fine but when I try to connect via Remote Desktop, the D3DImage loses its Backbuffer and the rendered image can't be displayed with WPF. I tried to enable the software fallback when I bind the Backbuffer. The result is that the application manages to render one image and then loses the backbuffer again. I also tried to

问题 To learn myself Direct2D i'm following this example from the MSDN. I have however one issue. The call D2D1_SIZE_F rtSize = m_pRenderTarget->GetSize(); allways returns a size of 0,0 and in the debugger causes an exception on the DrawLine call. If I leave out the GetSize() call and fill in the D2D1_SIZE_F structure with valid values it works. The relevant code for initializing the render target is: RECT rc; GetClientRect(m_hwnd, &rc); D2D1_SIZE_U size = D2D1::SizeU( rc.right - rc.left, rc

问题 I have some code to draw some text: var textFormat = new SharpDX.DirectWrite.TextFormat(fontFactory, "Arial", SharpDX.DirectWrite.FontWeight.Bold, SharpDX.DirectWrite.FontStyle.Normal, SharpDX.DirectWrite.FontStretch.Condensed, 16.0f); renderTarget.DrawText("AC", textFormat, textRect, textBrush, DrawTextOptions.NoSnap); The text is drawn starting at the top-left of the target rectangle. Is there any way to right-justify the text? 回答1: The fourth entry for the google search "right justify text

问题 I am running Visual Studio 2012 on my Windows 7 machine. When I run the SimpleDirect2dApplication found here : http://technet.microsoft.com/en-us/subscriptions/dd940321%28v=vs.85%29.aspx hr = CoCreateInstance( CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&m_pWICFactory) ); the CoCreateInstance fails with a "Class Not Registered" and the ptr to the factory is 0. Any help would be appreciated. 回答1: According to an answer in a Microsoft's forum a breaking change in the

问题 I am working on a extension to a game which only opens a HDC for addon developers to draw on. However, I have exhausted GDI+/Direct2D drawing possibilities that is fast enough for what I want to accomplish - image effects(Additive, Blend, Multiply Blend etc). I am well aware that Direct2D offers a effects toolkit however, that requires a platform update (for Windows 7) and that is not ideal at all. Hence I am left with only Direct3D. MSDN/Google Search offers lots of ways to do D2D -> D3D,