directx

When writing DirectX applications, obviously it's desirable to support the user suspending the application via Alt - Tab in a way that's fast and error-free . What is the best set of practices for ensuring this? Things that need to be addressed include: The best methods of detecting when your application has been alt-tabbed out of and when it has been returned to. What DirectX resources are lost when the user alt-tabs, and the best ways to cope with this. Major things to do and things to avoid in application architecture for purposes of alt-tab support. Any significant differences between

I need to capture the visual output (like a screenshot) of a DirectX window. Currently, I use this approach . But, when the window is in background, it captures whatever is in front of it. I see that DirectX windows render even when minimized or in background, so this should be possible. But, how? (It also needs to be fast, and it needs to work on Windows XP too, unfortunately...) Edit : I am very busy these days... Don't worry, I'll put the bounty back if it expires. To capture Direct3D windows that are in the background (or moved off screen), I believe you have the following options: Inject

I am trying to make a ball trail. rBallPos is correctly updating. Following code is not working creating a cylinder as ball's trail. How to solve it? LPD3DXMESH /*ID3DXMesh*/ ppMeshCylinder = NULL; hr = D3DXCreateCylinder(g_d3d_device,0.1f,0.1f,0.1f,1,1,&ppMeshCylinder,0); hr is FAILED here also hr != D3D_OK D3DXMATRIX cylinder, cylinder2, cylinderRotate, cylinderTrans; D3DXMatrixRotationX(&cylinderRotate, 1.5f); D3DXMatrixTranslation(&cylinderTrans, rBallPos.fX, rBallPos.fY, rBallPos.fZ); D3DXMatrixMultiply(&cylinder, &cylinderRotate, &cylinderTrans); g_d3d_device->SetTransform(D3DTS_WORLD,

I am trying to create a program that will capture a full screen directx application, look for a specific set of pixels on the screen and if it finds it then draw an image on the screen. I have been able to set up the application to capture the screen the directx libraries using the code the answer for this question Capture screen using DirectX In this example the code saves to the harddrive using the IWIC libraries. I would rather manipulate the pixels instead of saving it. After I have captured the screen and have a LPBYTE of the entire screen pixels I am unsure how to crop it to the region I

In DirectX 11, there are four types of drivers: D3D_DRIVER_TYPE_HARDWARE D3D_DRIVER_TYPE_REFERENCE D3D_DRIVER_TYPE_SOFTWARE D3D_DRIVER_TYPE_WARP The first one is hardware driver which is widely known to us. and we always use this one in our program. The last 3 are WARP dirver, reference driver and software driver. from the document on MSDN, I am not quite clear what's the differences of the 3 kinds of drivers, the same is they are all implement by software, but, what's the differences? Reference device and Software device http://www.gamedev.net/topic/631456-whats-the-difference-between-d3d

I've done 2 programs to use Shared Resources, running on SlimDX & DirectX10. One program will display the shared texture on a 3D mesh. The 2nd program will load an image as texture. So far I need to pass the shared handled everytime the texture is update from a new image. Now, is there a way that I can initialize a fixed size shared texture (Texture2D), then everytime when I load a new image, all I need to do is load it as texture, then copy it to the existing texture. This way the shared handle would not change, and I can save some overhead of passing the shared handle. For DirectX9, I do

I'm trying to make simple SlimDX example to test some performance vs GDI and unfortunately I got stuck on the very beginning. I've created simple Console Application in VS2010 and added this code to programs main method: // 0. STEP SlimDX.Direct3D10.Device device = new SlimDX.Direct3D10.Device(DriverType.Hardware, DeviceCreationFlags.BgraSupport); SlimDX.Direct2D.Factory factory = new SlimDX.Direct2D.Factory(); // 1. STEP Texture2DDescription textureDesc = new Texture2DDescription(); textureDesc.Width = 512; textureDesc.Height = 512; textureDesc.MipLevels = 1; textureDesc.ArraySize = 1;