directx

问题 The msdn documentation explains that in directx 11 there are multiple ways to fill a directx 11 texture programmatically: (1) Create the texture with default usage texture and initialize it with data from memory (2) Create the texture with dynamic usage, use DeviceContext Map to get a pointer to texture memory, write to it, then use Unmap to indicate you are done (at which point I guess it is copied to the gpu) (3) Create the texture with staging usage and follow same steps as for dynamic

问题 I'm trying to implement a quaternion-based camera, but when moving around the X and Y axis, the camera produces an unwanted roll on the Z axis. I want to be able to look around freely on all axis. I've read other topics about this problem (for example: http://www.flipcode.com/forums/thread/6525 ), but I'm not getting what is meant by "Fix this by continuously rebuilding the rotation matrix by rotating around the WORLD axis, i.e around <1,0,0>, <0,1,0>, <0,0,1>, not your local coordinates,

问题 I tried to follow the steps in the answer of Directx control in browser plugin but when I added the solution mentioned in http://colonelpanic.net/2010/11/firebreath-tips-drawing-on-windows/ FireBreath Tips: Drawing on Windows "1.Make your plugin object windows specific change the type of the event source specified in EVENTTYPE_CASE to FB::PluginWindowWin (as well as the type in the handlers) and you will have your object cast in the way you need it." I got 119 errors, all are in winsock2.h

问题 After struggling for many hours to understand and compensate for Microsoft's deprecation of D3DX in Windows 8, I've run into a problem that I can't shake off. The first time I started my program, it became immortal because of an access violation. After having restarted my computer and recompiling and running the same code, it doesn't crash, but the cube I should be seeing just isn't there. I'm also getting a warning that "object declared on the heap may not be aligned 16". AFAIK from my

问题 I'm trying to blur my depth buffer and then get surface normal for my fluid simulation here is my hlsl pixels shader Bilateral Filter float depth = depthTexture.Sample( defss1, pin.Tex).x; float blurDepthFalloff = 2.0f; float radius = 4.0f; float blurScale = 2.0f / radius; float sum = 0.0f; float wsum = 0.0f; float2 scale = (1.0f/(1920.0f), 1.0f/(1080.0f)); for(float x=-radius; x<=radius; x+=1.0f) { float cur = depthTexture.Sample( defss1, pin.Tex + x * scale).x; // range domain float r2 =

问题 I have written a little DirectX RenderEngine, to render and texture simple Polygons. The texturing worked with CreateDDSTextureFromFile(.dds) very well. Now, I try to set up a Texture and a corresponding ShaderResourceView from a Memory buffer. Creating the Texture2D works, but then, CreateShaderResourceView ALWAYS fails . Also tried to call it with 2nd param set to NULL, also fails. I was trying to figure out what's wrong here for the whole week. I hope somebody can help me here. [Code] :

问题 I made a trampoline hook for the function IDirect3DDevice9::EndScene. The codecave I modified the start if the EndScene function to jump to is this: __declspec(naked) HRESULT EndScene_Hook(IDirect3DDevice9* device) { ScreenCapture::Capture(device); __asm { PUSH 0x14 MOV EAX, 0x718E6478 JMP address } } The problem is that sometimes device is NULL, why is that? if I add a small condition like this: if(device != NULL) ScreenCapture::Capture(device); Everything works as intended with no errors.

问题 My hardware only supports Directx 10.1 but I know through feature levels I can develop with the directx 11 API and still maintain compatibility. One concern that I have is my hardware supports shader model 4.1 and directx 11 supports shader model 5.0. So my question is will I be able to develop for directx 11 including the shader model 5.0 with my directx 10.1 hardware? All help is appreciated. 回答1: Short of using the reference device or WARP, the answer is no. While you will be using the

问题 I am using a constant buffer to transfer data to my pixel shader The problem is that the buffer contains 0s in the shader during runtime for x, y, z, and w of the float4 member, regardless of what data is updated to the buffer Structure definitions are as follows: // (C++) struct Buffer { XMMATRIX mvp_; XMFLOAT4 rgba_; int usemvp_; }; // HLSL cbuffer Buffer : register( b0 ) { matrix mvp_; float4 rgba_; int usemvp_; }; Any help is much appreciated 回答1: You need to pad your struct to make it 16

问题 I'm working on my first C++ and DirectX 11 project where my current goal is to draw a colored triangle on the screen. This has worked well without any problems. However, there's one part that I would like to change, but I don't know how. I've tried searching for a solution but I havn't found any yet, and I guess that the reason is because I don't really know what I should search for. Currently I set up my triangles 3 vertices like this: VertexPos vertices[] = { { XMFLOAT3( 0.5f, 0.5f, 1.0f )}