我有一个VC ++ DirectX应用程序渲染3D立方体，相机可以用W，A，S，D键和鼠标移动。在左上角，文本显示当前的摄像机坐标;然而，在10-15秒之后，分配的RAM和CPU增加到 1.6Gb 并且几乎 50％总数..这只有在我启用文本时才会发生（甚至如果运动仍然是“基于FLOPS”，那么无论如何它有时会“生锈”，有或没有文字打印）。
我想让一遍又一遍地渲染文本会导致RAM填满，因为它不会“释放”以前写过的文件。？
这是我的代码（有点长，我包括了所有内容'因为也许是别的 - 但是，我不建议你运行它，因为它可以，在最坏的情况下，冻结所有的RAM！）：< / p>
#include <windows.h> // form header
#include <windowsx.h> // form header 2
#include <d3d9.h> // Direct3D9 header
#include <d3dx9.h> // DirectX9 header
#include <conio.h>
#include <dinput.h> // DirectInput header
#include <math.h>
#include <string>
using namespace std;
const double PI = 3.1415926;
// include the Direct3D Library file
#pragma comment (lib, "d3d9.lib")
#pragma comment (lib, "d3dx9.lib")
// include the DirectInput8 Library file
#pragma comment (lib, "dinput8.lib")
#pragma comment (lib, "dxguid.lib")
// define the screen resolution
#define SCREEN_WIDTH 1024
#define SCREEN_HEIGHT 768
// global declarations
LPDIRECT3D9 d3d; // the pointer to our Direct3D interface
LPDIRECT3DDEVICE9 d3ddev; // the pointer to the device class
LPDIRECT3DVERTEXBUFFER9 v_buffer = NULL; // the pointer to the vertex buffer
LPDIRECT3DINDEXBUFFER9 i_buffer; // the pointer to an index buffer
LPDIRECT3DTEXTURE9 texture; // declare a texture
LPDIRECT3DTEXTURE9 bump;
LPDIRECTINPUT8 din; // the pointer to our DirectInput interface
LPDIRECTINPUTDEVICE8 dinkeyboard; // the pointer to the keyboard device
LPDIRECTINPUTDEVICE8 dinmouse; // the pointer to the mouse device
BYTE keystate[256]; // the storage for the key-information
DIMOUSESTATE mousestate; // the storage for the mouse-information
ID3DXFont *dxfont;
VOID* pVoid; // a void pointer
// function prototypes
void initD3D(HWND hWnd); // sets up and initializes Direct3D
void render_frame(void); // renders a single frame
void cleanD3D(void); // closes Direct3D and releases memory
void init_graphics(void); // 3D declarations
void init_light(void); // sets up the light and the material
void initDInput(HINSTANCE hInstance, HWND hWnd); // sets up and initializes DirectInput
void detect_input(void); // gets the current input state
void cleanDInput(void); // closes DirectInput and releases memory
void PrintText(char* str, int size, int x, int y, DWORD color);
inline DWORD F2DW( FLOAT f ) { return *((DWORD*)&f); }
struct CUSTOMVERTEX {FLOAT X, Y, Z; D3DVECTOR NORMAL; FLOAT U,V;};
#define CUSTOMFVF (D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX1)
// the WindowProc function prototype
LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
// the entry point for any Windows program
int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
HWND hWnd;
WNDCLASSEX wc;
ZeroMemory(&wc, sizeof(WNDCLASSEX));
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = WindowProc;
wc.hInstance = hInstance;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)COLOR_WINDOW;
wc.lpszClassName = L"WindowClass";
RegisterClassEx(&wc);
hWnd = CreateWindowEx(NULL,
L"WindowClass",
L"Our First Direct3D Program",
WS_OVERLAPPEDWINDOW, // non-fullscreen values
0, 0, // the starting x and y positions should be 0
SCREEN_WIDTH, SCREEN_HEIGHT, // set window to new resolution
NULL,
NULL,
hInstance,
NULL);
ShowWindow(hWnd, nCmdShow);
// set up and initialize Direct3D
initD3D(hWnd);
initDInput(hInstance, hWnd); // initialize DirectInput
// enter the main loop:
MSG msg;
while(TRUE)
{
while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
if(msg.message == WM_QUIT)
break;
detect_input(); // update the input data before rendering
render_frame();
if(keystate[DIK_ESCAPE] & 0x80)
PostMessage(hWnd, WM_DESTROY, 0, 0);
}
// clean up DirectX and COM
cleanD3D();
cleanDInput(); // release DirectInput
return msg.wParam;
}
// this is the main message handler for the program
LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch(message)
{
case WM_DESTROY:
{
PostQuitMessage(0);
return 0;
} break;
}
return DefWindowProc (hWnd, message, wParam, lParam);
}
// this function initializes and prepares Direct3D for use
void initD3D(HWND hWnd)
{
d3d = Direct3DCreate9(D3D_SDK_VERSION); // create the Direct3D interface
D3DPRESENT_PARAMETERS d3dpp; // create a struct to hold various device information
ZeroMemory(&d3dpp, sizeof(d3dpp)); // clear out the struct for use
d3dpp.Windowed = TRUE; // program fullscreen, not windowed
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; // discard old frames
d3dpp.hDeviceWindow = hWnd; // set the window to be used by Direct3D
d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8; // set the back buffer format to 32-bit
d3dpp.BackBufferWidth = SCREEN_WIDTH; // set the width of the buffer
d3dpp.BackBufferHeight = SCREEN_HEIGHT; // set the height of the buffer
d3dpp.EnableAutoDepthStencil = TRUE;
d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
// create a device class using this information and the info from the d3dpp stuct
d3d->CreateDevice(D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL,
hWnd,
D3DCREATE_SOFTWARE_VERTEXPROCESSING,
&d3dpp,
&d3ddev);
d3ddev->SetRenderState(D3DRS_LIGHTING, TRUE); // turn off the 3D lighting
d3ddev->SetRenderState(D3DRS_ZENABLE, TRUE); // turn on the z-buffer
d3ddev->SetRenderState(D3DRS_AMBIENT, D3DCOLOR_XRGB(50, 50, 50)); // ambient light
init_graphics(); // call the function to initialize the triangle
init_light(); // call the function to initialize the light and material
d3ddev->SetRenderState(D3DRS_LIGHTING, TRUE); // turn on the 3D lighting
d3ddev->SetRenderState(D3DRS_ZENABLE, TRUE); // turn on the z-buffer
d3ddev->SetRenderState(D3DRS_AMBIENT, D3DCOLOR_XRGB(50, 50, 50)); // ambient light
d3ddev->SetRenderState(D3DRS_NORMALIZENORMALS, TRUE); // handle the normal lenght
d3ddev->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE); // turn color blending on
// set filters and samples
d3ddev->SetSamplerState(0, D3DSAMP_MAXANISOTROPY, 8);
d3ddev->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_ANISOTROPIC);
d3ddev->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
d3ddev->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_LINEAR);
//d3ddev->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD); // set the blending operation
//d3ddev->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA); // set the source blending
//d3ddev->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA); // set the destination blending
D3DXCreateTextureFromFile(d3ddev, // the Direct3D device
L"brick.bmp", // the filename of the texture
&texture); // the address of the texture storage
D3DXCreateTextureFromFile(d3ddev,
L"bump.bmp",
&bump);
//d3ddev->SetRenderState(D3DRS_TEXTUREFACTOR, D3DCOLOR_XRGB(200, 200, 200));
//d3ddev->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_DOTPRODUCT3);
//d3ddev->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
//d3ddev->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_TFACTOR);
//d3ddev->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
//d3ddev->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_DIFFUSE);
//d3ddev->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_MODULATE);
//d3ddev->SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_CURRENT);
//d3ddev->SetTextureStageState(1, D3DTSS_COLORARG2, D3DTA_TEXTURE);
//d3ddev->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
//d3ddev->SetTextureStageState(1, D3DTSS_ALPHAARG1, D3DTA_DIFFUSE);
d3ddev->SetTextureStageState(2, D3DTSS_COLOROP, D3DTOP_DISABLE);
d3ddev->SetTextureStageState(2, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
//D3DXAssembleShaderFromFile("shader1.fx", 0 , NULL, &pCode, NULL );
}
// Hypotenuse function
float hypo(float x,float y)
{
float hypo=sqrt(x*x+y*y);
return hypo;
}
// this is the function used to render a single frame
void render_frame(void)
{
// clear the window to a specified color
d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
d3ddev->Clear(0, NULL, D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
d3ddev->BeginScene(); // begins the 3D scene
d3ddev->SetFVF(CUSTOMFVF); // tells Direct3D what FVF code we are using currently
// set the texture
d3ddev->SetTexture(1, bump);
d3ddev->SetTexture(0, texture);
///////
D3DXMATRIX matTranslateA; // a matrix to store the translation for triangle A
D3DXMATRIX matTranslateB; // a matrix to store the translation for triangle B
D3DXMATRIX matRotate; // a matrix to store the rotation for each triangle
D3DXMATRIX matRotate2;
D3DXMATRIX matScale;
static float index = 0.0f; // left movement (A)
static float index2 = 10.0f; // upward movement (PRIOR)
static float index3 = 18.0f; // backward movement (S) -- 1.0f
static float index4 = 0.0f; // left lookAt
static float index5 = 10.0f; // upward lookAt
static float index6 = 18.0f; // backward lookAt
// camera variables
static float radius = 30.00f;
static float theta = (3.0f * D3DX_PI) / 2.0f;
static float phi = D3DX_PI/2;
float Cx, Cy, Cz;
static int field = 45;
float slide = 0.001f;
static float dist1 = fabs(index-index4);
static float dist2 = fabs(index2-index5);
static float dist3 = fabs(index3-index6);
// player movements
// mouse movements
field -= 0.01 * mousestate.lZ;
theta += slide * mousestate.lX;
phi -= slide * mousestate.lY;
if(phi >= (D3DX_PI/9) * 8)
{
phi = (D3DX_PI/9) * 8;
}
if(phi <= (D3DX_PI/9))
{
phi = (D3DX_PI/9);
}
Cx = radius * cosf(theta) * sinf(phi);
Cy = radius * cosf(phi);
Cz = radius * sinf(theta) * sinf(phi);
float mov = radius*0.012;
float mov1 = Cz*0.012;
float mov2 = -Cx*0.012;
// previous index. values
float indexb = index;
float index3b = index3;
//if (GetAsyncKeyState(VK_SHIFT)) // --- 0.06f/0.03f
//{
if (keystate[DIK_A] & 0x80)
{
index=index-mov1;
index3=index3+mov2;
}
if (keystate[DIK_D] & 0x80)
{
index=index+mov1;
index3=index3-mov2;
}
if (keystate[DIK_PRIOR] & 0x80) // up +
{
index2+=0.22f;
}
if (keystate[DIK_NEXT] & 0x80) // down -
{
index2-=0.22f;
}
if (keystate[DIK_W] & 0x80) // prior
{
index3=index3+mov1;
index=index+mov2;
}
if (keystate[DIK_S] & 0x80) // next
{
index3=index3-mov1;
index=index-mov2;
}
if (keystate[DIK_SPACE] & 0x80) // next
{
// JUMP!!!!!!!!!!!!
}
if (hypo(index-indexb,index3-index3b)>mov)
{
index=indexb+0.7071*(index-indexb);
index3=index3b+0.7071*(index3-index3b);
}
// print a text
char msg1[64], msg2[64], msg3[64];
sprintf (msg1, "X axis: %f", index);
sprintf (msg2, "Z axis: %f", index3);
PrintText(msg1, 20, 30, 30, D3DCOLOR_XRGB(255,255,255));
PrintText(msg2, 20, 30, 60, D3DCOLOR_XRGB(255,255,255));
//}
/*else
if (GetAsyncKeyState(VK_LEFT))
{
index+=0.06f;
index4+=0.06f;
}
if (GetAsyncKeyState(VK_RIGHT))
{
index-=0.06f;
index4-=0.06f;
}
if (GetAsyncKeyState(VK_PRIOR))
{
index2-=0.06f;
index5-=0.06f;
}
if (GetAsyncKeyState(VK_NEXT))
{
index2+=0.06f;
index5+=0.06f;
}
if (GetAsyncKeyState(VK_UP))
{
index3-=0.03f;
index6-=0.06f;
}
if (GetAsyncKeyState(VK_DOWN))
{
index3+=0.03f;
index6+=0.06f;
}*/
// build MULTIPLE matrices to translate the model and one to rotate
D3DXMatrixTranslation(&matTranslateA, 0.0f, 0.0f, 0.0f);
//D3DXMatrixTranslation(&matTranslateB, 0.0f, 0.0f, -3.0f);
D3DXMatrixRotationY(&matRotate, 0.0f); // the front side --- index
D3DXMatrixRotationX(&matRotate2, 0.0f); // index2
D3DXMatrixScaling(&matScale, 1.0f, 1.0f, 1.0f); // index3
///////
D3DXMATRIX matView; // the view transform matrix
D3DXMatrixLookAtLH(&matView,
&D3DXVECTOR3 (index, index2, index3), // the camera position --- (0.0f, 10.0f, 18.0f)
&D3DXVECTOR3 (index-Cx, index2-Cy, index3+Cz), // the look-at position --- (0.0f, 0.0f, 0.0f)
&D3DXVECTOR3 (0.0f, 1.0f, 0.0f)); // the up direction
d3ddev->SetTransform(D3DTS_VIEW, &matView); // set the view transform to matView
D3DXMATRIX matProjection; // the projection transform matrix
D3DXMatrixPerspectiveFovLH(&matProjection,
D3DXToRadian(field), // the horizontal field of view
(FLOAT)SCREEN_WIDTH / (FLOAT)SCREEN_HEIGHT, // aspect ratio
1.0f, // the near view-plane
100.0f); // the far view-plane
d3ddev->SetTransform(D3DTS_PROJECTION, &matProjection); // set the projection
// tell Direct3D about each world transform, and then draw another triangle
d3ddev->SetTransform(D3DTS_WORLD, &(matTranslateA * matRotate * matRotate2 * matScale));
///////
/// select the vertex and index buffers to use
d3ddev->SetStreamSource(0, v_buffer, 0, sizeof(CUSTOMVERTEX));
d3ddev->SetIndices(i_buffer);
// draw the cube
d3ddev->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 0, 24, 0, 12);
d3ddev->EndScene(); // ends the 3D scene
d3ddev->Present(NULL, NULL, NULL, NULL); // displays the created frame on the screen
}
// this is the function that cleans up Direct3D and COM
void cleanD3D(void)
{
v_buffer->Release(); // close and release the vertex buffer
//i_buffer->Release(); // close and release the index buffer
texture->Release(); // close and release the texture
d3ddev->Release(); // close and release the 3D device
d3d->Release(); // close and release Direct3D
}
// this is the function that puts the 3D models into video RAM
void init_graphics(void)
{
// create the vertices using the CUSTOMVERTEX struct
CUSTOMVERTEX vertices[] =
{
{ -3.0f, -3.0f, 3.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f }, // side 1
{ 3.0f, -3.0f, 3.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f },
{ -3.0f, 3.0f, 3.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f },
{ 3.0f, 3.0f, 3.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f },
{ 3.0f, -3.0f, -3.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f }, // side 2
{ -3.0f, -3.0f, -3.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f },
{ 3.0f, 3.0f, -3.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f },
{ -3.0f, 3.0f, -3.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f },
{ -3.0f, 3.0f, -3.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f }, // side 3
{ -3.0f, 3.0f, 3.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f },
{ 3.0f, 3.0f, -3.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f },
{ 3.0f, 3.0f, 3.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f },
{ -3.0f, -3.0f, -3.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f }, // side 4
{ 3.0f, -3.0f, -3.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f },
{ -3.0f, -3.0f, 3.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f },
{ 3.0f, -3.0f, 3.0f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f },
{ 3.0f, -3.0f, 3.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f }, // side 5
{ 3.0f, -3.0f, -3.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f },
{ 3.0f, 3.0f, 3.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f },
{ 3.0f, 3.0f, -3.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
{ -3.0f, -3.0f, -3.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f }, // side 6
{ -3.0f, -3.0f, 3.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f },
{ -3.0f, 3.0f, -3.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f },
{ -3.0f, 3.0f, 3.0f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f },
};
// create a vertex buffer interface called v_buffer
d3ddev->CreateVertexBuffer(24*sizeof(CUSTOMVERTEX),
0,
CUSTOMFVF,
D3DPOOL_MANAGED,
&v_buffer,
NULL);
VOID* pVoid; // a void pointer
// lock v_buffer and load the vertices into it
v_buffer->Lock(0, 0, (void**)&pVoid, 0);
memcpy(pVoid, vertices, sizeof(vertices));
v_buffer->Unlock();
// create the indices using an int array
short indices[] =
{
0, 1, 2, // side 1
2, 1, 3,
4, 5, 6, // side 2
6, 5, 7,
8, 9, 10, // side 3
10, 9, 11,
12, 13, 14, // side 4
14, 13, 15,
16, 17, 18, // side 5
18, 17, 19,
20, 21, 22, // side 6
22, 21, 23,
};
// create an index buffer interface called i_buffer
d3ddev->CreateIndexBuffer(36*sizeof(short),
0,
D3DFMT_INDEX16,
D3DPOOL_MANAGED,
&i_buffer,
NULL);
// lock i_buffer and load the indices into it
i_buffer->Lock(0, 0, (void**)&pVoid, 0);
memcpy(pVoid, indices, sizeof(indices));
i_buffer->Unlock();
}
// this is the function that sets up the lights and materials
void init_light(void)
{
D3DLIGHT9 light; // create the light struct
D3DMATERIAL9 material; // create the material struct
ZeroMemory(&light, sizeof(light)); // clear out the light struct for use
light.Type = D3DLIGHT_POINT; // make the light type 'point light'
light.Diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); // set the light's color
//light.Specular = D3DXCOLOR(5.5f, 5.5f, 5.5f, 1.0f);
light.Position = D3DXVECTOR3(10.0f, 10.0f, 5.0f);
light.Range = 100.0f;
//light.Direction = D3DXVECTOR3(-1.0f, -0.3f, -1.0f);
light.Attenuation0 = 0.0f; // constant attenuation
light.Attenuation1 = 0.0f; // inverse attenuation
light.Attenuation2 = 0.01f; // square inverse attenuation
d3ddev->SetLight(0, &light); // send the light struct properties to light #0
d3ddev->LightEnable(0, TRUE); // turn on light #0
ZeroMemory(&material, sizeof(D3DMATERIAL9)); // clear out the struct for use
material.Diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); // set diffuse color
material.Ambient = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); // set ambient color
d3ddev->SetMaterial(&material); // set the globably-used material to &material
}
// this is the function that initializes DirectInput
void initDInput(HINSTANCE hInstance, HWND hWnd)
{
// create the DirectInput interface
DirectInput8Create(hInstance, // the handle to the application
DIRECTINPUT_VERSION, // the compatible version
IID_IDirectInput8, // the DirectInput interface version
(void**)&din, // the pointer to the interface
NULL); // COM stuff, so we'll set it to NULL
// create the keyboard device
din->CreateDevice(GUID_SysKeyboard, // the default keyboard ID being used
&dinkeyboard, // the pointer to the device interface
NULL); // COM stuff, so we'll set it to NULL
din->CreateDevice(GUID_SysMouse,
&dinmouse,
NULL);
// set the data format to keyboard format
dinkeyboard->SetDataFormat(&c_dfDIKeyboard);
dinmouse->SetDataFormat(&c_dfDIMouse);
// set the control you will have over the keyboard
dinkeyboard->SetCooperativeLevel(hWnd, DISCL_NONEXCLUSIVE | DISCL_FOREGROUND);
dinmouse->SetCooperativeLevel(hWnd, DISCL_EXCLUSIVE | DISCL_FOREGROUND);
}
// this is the function that gets the latest input data
void detect_input(void)
{
// get access if we don't have it already
dinkeyboard->Acquire();
dinmouse->Acquire();
// get the input data
dinkeyboard->GetDeviceState(256, (LPVOID)keystate);
dinmouse->GetDeviceState(sizeof(DIMOUSESTATE), (LPVOID)&mousestate);
}
// this is the function that closes DirectInput
void cleanDInput(void)
{
dinkeyboard->Unacquire(); // make sure the keyboard is unacquired
dinmouse->Unacquire(); // make sure the mouse in unacquired
din->Release(); // close DirectInput before exiting
}
void PrintText(char* str, int size, int x, int y, DWORD color)
{
static RECT textbox;
SetRect(&textbox, x, y, SCREEN_WIDTH, SCREEN_HEIGHT);
D3DXCreateFont(d3ddev, // the D3D Device
size, // font height
0, // default font width
FW_NORMAL, // font weight
1, // not using MipLevels
false, // italic font
DEFAULT_CHARSET, // default character set
OUT_DEFAULT_PRECIS, // default OutputPrecision,
DEFAULT_QUALITY, // default Quality
DEFAULT_PITCH | FF_DONTCARE, // default pitch and family
L"Arial", // use Facename Arial
&dxfont); // the font object
dxfont->DrawTextA(NULL,
str,
strlen(str),
&textbox,
DT_LEFT | DT_TOP,
color);
}
答案 0 :(得分：2)
每次打印文本时都不要创建新的字体对象。
答案 1 :(得分：1)
正如stefan发布的那样，每次调用PrintText函数时都会创建一个新字体。
解决此问题的一种方法是将D3DXCreateFont函数调用移入initD3D函数，并将匹配的dxfont->Release();添加到cleanD3D函数。