D3DXCreateSprite函数初始化一个精灵后，使用精灵对象的Draw函数把纹理绘制到屏幕上，可是原本的
位图大小是64x64,因为我创建的窗体大小是1024x768,导致位图也跟着发生长宽变化了，
如何才能解决这个问题？代码如下
#include
#include
#include
#include
#include
#pragma comment(lib,"d3d9.lib")
#pragma comment(lib,"d3dx9.lib")
#pragma comment (lib,"d3dx9d.lib")
using namespace std;
#define white D3DCOLOR_XRGB(255,255,255)
#define KEY_DOWN(vk_code)((GetAsyncKeyState(vk_code) & 0x8000)? 1:0)
const string title = "My First windows";
bool over = false;
LPDIRECT3D9 d3d = NULL;
LPDIRECT3DDEVICE9 d3ddev = NULL;
D3DPRESENT_PARAMETERS d3dpp;
LPDIRECT3DSURFACE9 surface = NULL;
LPDIRECT3DSURFACE9 backsurface = NULL;
LPD3DXSPRITE spr = NULL;
LPDIRECT3DTEXTURE9 player = NULL;
bool d3d_init(HWND hwnd);
bool surface_get(void);
void game(HWND hwnd);
void game_end(HWND hwnd);
LPDIRECT3DTEXTURE9 loadtexture(string name, D3DCOLOR color);
LRESULT CALLBACK WinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
ATOM MyRegisterClass(HINSTANCE hInstance);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpcmdline, int nCmdShow)
{
MyRegisterClass(hInstance);
HWND hwnd = CreateWindow(
title.c_str(),
title.c_str(),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
600, 600,
NULL, NULL, hInstance, NULL
);
if (hwnd == 0) return 0;
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);
if (!d3d_init(hwnd))
{
MessageBox(NULL, "初始化失败了", "error", MB_OK);
return false;
}
if (!surface_get())
{
MessageBox(NULL, "表面创建失败", "error", MB_OK);
return false;
}
MSG message;
player = loadtexture("bitmap1.bmp", D3DCOLOR_XRGB(255, 255, 255));
HRESULT result = D3DXCreateSprite(d3ddev, &spr);
while (!over)
{
if (PeekMessage(&message, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&message);
DispatchMessage(&message);
}
game(hwnd);
}
game_end(hwnd);
return message.wParam;
}
LRESULT CALLBACK WinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_DESTROY:
over = true;
PostQuitMessage(0);
break;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wc = { 0 };
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC)WinProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = "My First windows";
wc.hIconSm = NULL;
return RegisterClassEx(&wc);
}
bool d3d_init(HWND hwnd)
{
d3d = Direct3DCreate9(D3D_SDK_VERSION);
if (d3d == NULL)
{
MessageBox(hwnd, "dx初始化失败", "error", MB_OK);
return false;
}
ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
d3dpp.BackBufferCount = 1;
d3dpp.BackBufferHeight = 1024;
d3dpp.BackBufferWidth = 768;
d3d->CreateDevice(
D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL,
hwnd,
D3DCREATE_SOFTWARE_VERTEXPROCESSING,
&d3dpp,
&d3ddev
);
if (d3ddev == NULL)
{
MessageBox(hwnd, "设备初始化失败", "error", MB_OK);
return false;
}
MessageBox(hwnd, "初始化成功", "success", MB_OK);
return true;
}
bool surface_get(void)
{
d3ddev->Clear(
0,
NULL,
D3DCLEAR_TARGET,
D3DCOLOR_XRGB(255, 255, 255),
1.0f,
0
);
d3ddev->GetBackBuffer(
0,
0,
D3DBACKBUFFER_TYPE_MONO,
&backsurface
);
HRESULT result = d3ddev->CreateOffscreenPlainSurface(
50,
50,
D3DFMT_X8R8G8B8,
D3DPOOL_DEFAULT,
&surface,
NULL
);
if (result != D3D_OK)return false;
return true;
}
void game(HWND hwnd)
{
if (!d3ddev)return;
if (d3ddev->BeginScene())
{
spr->Begin(D3DXSPRITE_ALPHABLEND);
D3DXVECTOR3 pos(100, 100, 0);
spr->Draw(player, NULL, NULL, &pos, white);
spr->End();
d3ddev->EndScene();
d3ddev->Present(NULL, NULL, NULL, NULL);
}
if (KEY_DOWN(VK_ESCAPE)) PostMessage(hwnd, WM_DESTROY, 0, 0);
return;
}
void game_end(HWND hwnd)
{
if (surface)surface->Release();
if (d3ddev)d3ddev->Release();
if (d3d)d3d->Release();
}
LPDIRECT3DTEXTURE9 loadtexture(string name, D3DCOLOR color)
{
LPDIRECT3DTEXTURE9 texture = NULL;
D3DXIMAGE_INFO info;
HRESULT result = D3DXGetImageInfoFromFile(name.c_str(), &info);
if (result != D3D_OK)
{
MessageBox(NULL, "!!!!!!", "!", MB_OK);
return NULL;
}
D3DXCreateTextureFromFileEx(
d3ddev,
name.c_str(),
info.Width,
info.Height,
1,
D3DPOOL_DEFAULT,
D3DFMT_UNKNOWN,
D3DPOOL_DEFAULT,
D3DX_DEFAULT,
D3DX_DEFAULT,
color,
&info,
NULL,
&texture
);
return texture;
}
