DirectX纹理变形
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我正在编写WIN32 DirectX 9程序，其中加载了一些纹理（一个人和一个背景）并将它们显示在屏幕上。但是，它们会变形（拉伸），而不是我在Paint中绘制的内容的一对一表示。我尝试了不同的窗口大小和不同的屏幕分辨率，但是仍然无法正常工作。
在绘制精灵之前，我可以通过调用D3DXMatrixTransformation2D来强行模仿原始事物。但是，这不能解决问题。我的程序依赖于我确切地知道该人与背景相关的位置（实际上，背景在移动并且该人停留在屏幕中间）。
我缺少一些简单的东西，还是由于某种原因我无法做到这一点？我可以提供代码，而不只是简单的解决方法，但我希望不会。根据记录，我没有收到任何错误或警告；这只是视觉和运动跟踪问题。谢谢。
编辑：这是一些代码：
//start of program
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
//Define and register the Windows Class ***Function
createWindowClass(hInstance);
//Create the window (still not shown)
HWND hWnd = CreateWindow(\"Sample Window Class\", \"Person With Ship\", WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 800, 600, NULL, NULL, hInstance, NULL);
//Define and create the DirectX9 object ***Function
HRESULT hr = createDirectX(hWnd);
D3DXCreateSprite(d3dDevice, &sprite);
D3DXCreateTextureFromFile(d3dDevice, \"landingPad2.png\", &texture);
D3DXCreateTextureFromFile(d3dDevice, \"person.png\", &person);
//D3DXCreateTextureFromFile(d3dDevice, \"secondRoom.png\", &secondRoom);
//Set up text
LPD3DXFONT mFont;
D3DXCreateFont(d3dDevice, 20, 0, FW_BOLD, 0, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE, TEXT(\"Arial\"), &mFont );
//Finally show window
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
//setup keyboard
RAWINPUTDEVICE Rid[1]; // array of structs for input devices
Rid[0].usUsagePage = 1; // use 1 for most inputs
Rid[0].usUsage = 6; //2-mouse, 4-joystick, 6-keyboard
Rid[0].dwFlags = 0; //use 0
Rid[0].hwndTarget=NULL; //use NULL
RegisterRawInputDevices(Rid,1,sizeof(RAWINPUTDEVICE)); // registers all of the input devices
//MAIN LOOP!!
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message!=WM_QUIT)
{
while(PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
updateGraphics(hr, mFont);
updatePosition();
}
mFont->Release();
texture->Release();
return msg.wParam;
}
void createWindowClass(HINSTANCE hInstance)
{
const LPCSTR CLASS_NAME = \"Sample Window Class\";
//create windows object
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style= CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc= (WNDPROC)WndProc;
wcex.cbClsExtra= 0;
wcex.cbWndExtra= 0;
wcex.hInstance= hInstance;
wcex.hIcon= 0;
wcex.hCursor= LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground= (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName= 0;
wcex.lpszClassName= CLASS_NAME;
wcex.hIconSm= 0;
//register windows class
RegisterClassEx(&wcex);
}
HRESULT createDirectX(HWND hWnd)
{
//create directx object
d3dObject = Direct3DCreate9(D3D_SDK_VERSION);
if (d3dObject==NULL)
{
exit(1);
}
//Present Parameters struct
D3DPRESENT_PARAMETERS presParams;
//Sets everything to 0
ZeroMemory(&presParams, sizeof(presParams));
presParams.Windowed = TRUE;
presParams.SwapEffect = D3DSWAPEFFECT_DISCARD;
presParams.BackBufferFormat = D3DFMT_UNKNOWN;
presParams.PresentationInterval = D3DPRESENT_INTERVAL_ONE;
//DIRECT3D Stuff (not used currently)
//presParams.EnableAutoDepthStencil = TRUE;
//presParams.AutoDepthStencilFormat = D3DFMT_D16;
//d3dDevice->SetRenderState(D3DRS_ZENABLE, D3DZB_TRUE);
//D3DXMatrixIdentity( &worldMatrix );
HRESULT hr = d3dObject->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &presParams, &d3dDevice);
return hr;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_INPUT:
{
UINT bufferSize;
GetRawInputData((HRAWINPUT)lParam, RID_INPUT, NULL, &bufferSize, sizeof (RAWINPUTHEADER));
// Create a buffer of the correct size
BYTE *buffer=new BYTE[bufferSize];
// Call the function again, this time with the buffer to get the data
GetRawInputData((HRAWINPUT)lParam, RID_INPUT, (LPVOID)buffer, &bufferSize, sizeof (RAWINPUTHEADER));
PRAWINPUT raw = (RAWINPUT*) buffer;
getInput(raw);
break;
}
case WM_COMMAND:
{
int wmId = LOWORD(wParam);
int wmEvent = HIWORD(wParam);
// Parse the menu selections:
switch (wmId)
{
case IDM_EXIT:
DestroyWindow(hWnd);
break;
}
break;
}
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
void getInput(PRAWINPUT raw)
{
if (raw->header.dwType== RIM_TYPEKEYBOARD)
{
USHORT keyCode = raw->data.keyboard.VKey;
switch(keyCode)
{
case VK_LEFT:
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
counterTrue = true;
else
counterTrue = false;
break;
case VK_RIGHT:
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
clockwiseTrue = true;
else
clockwiseTrue = false;
break;
case VK_UP:
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
upTrue = true;
else
upTrue = false;
break;
case VK_DOWN:
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
downTrue = true;
else
downTrue = false;
break;
default:
break;
}
if (keyCode == \'A\')
{
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
leftTrue = true;
else
leftTrue = false;
}
if (keyCode == \'D\')
{
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
rightTrue = true;
else
rightTrue = false;
}
if (keyCode == \'W\')
{
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
upTrue = true;
else
upTrue = false;
}
if (keyCode == \'S\')
{
keyUp=raw->data.keyboard.Flags & RI_KEY_BREAK;
if (keyUp == false)
downTrue = true;
else
downTrue = false;
}
}
}
void updateGraphics(HRESULT hr, LPD3DXFONT mFont)
{
hr = d3dDevice->Clear(0, NULL, D3DCLEAR_TARGET| D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0,0,0), 1.0f, 0);
hr = d3dDevice->BeginScene();
sprite->Begin(D3DXSPRITE_ALPHABLEND);
// Texture being used is 64 by 64:
D3DXVECTOR2 spriteCentre=D3DXVECTOR2(rotationCenter.x, rotationCenter.y);
// Screen position of the sprite
D3DXVECTOR2 trans=D3DXVECTOR2(pos.x, pos.y);
// Build our matrix to rotate, scale and position our sprite
D3DXMATRIX mat;
D3DXVECTOR2 scaling(0.5798f, 0.784f);
// out, scaling centre, scaling rotation, scaling, rotation centre, rotation, translation
D3DXMatrixTransformation2D(&mat,NULL, NULL, &scaling,&spriteCentre,rotation,NULL/*&trans*/);
// Tell the sprite about the matrix
sprite->SetTransform(&mat);
sprite->Draw(texture, NULL, &rotationCenter, &pos, 0xFFFFFFFF);
scaling.x = 0.53;
scaling.y = 0.57f;
D3DXMatrixTransformation2D(&mat,NULL,0.0, &scaling,&spriteCentre, 0,NULL/*&trans*/);
sprite->SetTransform(&mat);
sprite->Draw(person, NULL, NULL, &personPos, 0xFFFFFFFF);
sprite->End();
DisplaySomeText(mFont);
d3dDevice->EndScene();
d3dDevice->Present(NULL, NULL, NULL, NULL);
}
void updatePosition()
{
if (clockwiseTrue == true)
{
rotation -= (float)0.03;
}
else if (counterTrue == true)
{
rotation += (float)0.03;
}
if (rotation >(PI))
{
rotation -= (float)(2*PI);
}
if (rotation <= -(PI))
{
rotation += (float)(2*PI);
}
if (upTrue == true)
{
pos.y += (3*cos(rotation));
pos.x += (3*sin(rotation));
}
else if (downTrue == true)
{
pos.y -= (3*cos(rotation));
pos.x -= (3*sin(rotation));
}
if (leftTrue == true)
{
pos.x += (3*cos(rotation));
pos.y -= (3*sin(rotation));
}
else if (rightTrue == true)
{
pos.x -= (3*cos(rotation));
pos.y += (3*sin(rotation));
}
//collision detection
if (rotation >=0 && rotation < (PI/2))
{
if (pos.y - (30*cos(rotation)) - (30*sin(rotation)) < -138 && pos.x < 350 && pos.x > -550)
{
pos.y = -142 + (30*cos(rotation)) + (30*sin(rotation));
}
}
if (rotation < 0 && rotation > -(PI/2))
{
if (pos.y - (51*cos(rotation)) + (14*sin(rotation)) < -142 && pos.x < 350 && pos.x > -550)
{
pos.y = -142 + (51*cos(rotation)) - (14*sin(rotation));
}
}
if (rotation < -(PI/2) && rotation > -(PI))
{
if (pos.y + (51*cos(rotation)) + (14*sin(rotation)) < -142 && pos.x < 350 && pos.x > -550)
{
pos.y = -142 - (51*cos(rotation)) - (14*sin(rotation));
}
}
if (rotation > (PI/2) && rotation <= (PI))
{
if (pos.y + (51*cos(rotation)) - (14*sin(rotation)) < -142 && pos.x < 350 && pos.x > -550)
{
pos.y = -142 - (51*cos(rotation)) + (14*sin(rotation));
}
}
}
void DisplaySomeText(LPD3DXFONT mFont)
{
// Create a colour for the text - in this case blue
D3DCOLOR fontColor = D3DCOLOR_ARGB(255,0,0,255);
// Create a rectangle to indicate where on the screen it should be drawn
RECT rct;
rct.left=200;
rct.right=780;
rct.top=10;
rct.bottom=rct.top+20;
TCHAR cX[30] = \"x\";
TCHAR cY[30] = \"y\";
TCHAR cR[30] = \"r\";
TCHAR cQ[30] = \"q\";
size_t cchDest = 30;
LPCTSTR pszFormat = TEXT(\"%f\");
HRESULT har = StringCchPrintf(cX, cchDest, pszFormat, pos.x);
HRESULT her = StringCchPrintf(cY, cchDest, pszFormat, pos.y);
HRESULT hir = StringCchPrintf(cR, cchDest, pszFormat, rotation);
HRESULT hur = StringCchPrintf(cQ, cchDest, pszFormat, (pos.y - (43*cos(rotation))));
mFont->DrawText(NULL, cX, -1, &rct, 0, fontColor);
rct.left += 100;
mFont->DrawText(NULL, cY, -1, &rct, 0, fontColor);
rct.left += 100;
mFont->DrawText(NULL, cR, -1, &rct, 0, fontColor);
rct.left += 100;
mFont->DrawText(NULL, cQ, -1, &rct, 0, fontColor);
}
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