You install a system wide hook. (SetWindowsHookEx) With this done, you get to be loaded into every process. Now when the hook is called, you look for a loaded d3d9.dll. If one is loaded, you create a temporary D3D9 object, and walk the vtable to get the address of the EndScene method. Then you can … Read more
Well, here’s another example. Xfire is a chat program that overlays its interface into games so you can receive messages while playing. The way they do this is by editing the d3d/opengl DLL at the process memory level, like injecting assembly jumps. I know this because their method was causing my mod to crash, and … Read more
The model, view and projection matrices are three separate matrices. Model maps from an object’s local coordinate space into world space, view from world space to camera space, projection from camera to screen. If you compose all three, you can use the one result to map all the way from object space to screen space, … Read more
You can watch the graph you created using GraphEdit, a tool from the DirectShow SDK. In GraphEdit, select File->Connect to remote Graph… In order to find your graph in the list, you have to register it in the running object table: void AddToRot( IUnknown *pUnkGraph, DWORD *pdwRegister ) { IMoniker* pMoniker; IRunningObjectTable* pROT; GetRunningObjectTable( 0, … Read more
If you can, do the picking on the CPU by calculating a ray from the eye through the mouse pointer and intersect it with your models. If this isn’t an option I would go with some type of ID rendering. Assign each object you want to pick a unique color, render the objects with these … Read more
Here is some sample code to capture the screen with DirectX 9. You shouldn’t have to install any SDK (except the standard files that come with Visual Studio, although I didn’t tested VS 2010). Just create a simple Win32 console application, add the following in the stdafx.h file: #include <Wincodec.h> // we use WIC for … Read more
For smooth surfaces (no edges) I do it like this: create space for per vertex double N[3]; //normal int cnt; per vertex init N={0.0,0.0,0.0} cnt=0; compute per face normal normal must be normalized length=1.0 !!! add this Normal to all vertexes used in face and increment cnt to all vertexes used in face per vertex … Read more
PART 2: Identifying and Fixing Windows Resize Problems Note: you want to read PART 1 first for this answer to make sense. This answer will not solve all your resizing problems. It organizes the still-usable ideas from other posts and adds a few novel ideas. None of this behavior is at all documented on Microsoft’s … Read more
Three problems in getKeyPressedString: 1) You´re not deleting lpszName again. Either make a delete lpszName; before returning, or use a static buffer in the first place. 2) keyString = *lpszName; only assigns the first character, not the whole string. Remove *. 3) GetKeyNameText can fail. Check the return value, and GetLastError too. (side note: ERROR_INSUFFICIENT_BUFFER … Read more