Mécanisme de DirectX - Buffers

**Kiwii** · 27/01/2011, 19h51

Bonjour,
Le titre est volontairement très vague car je ne sais pas d'où mon problème peut venir.
J'ai commencé DX il y a peu et je suis en train de trifouiller le code proposé ici :
http://www.directxtutorial.com/tutor...ics/dx9B4.aspx

Mon objectif étant : j'appuie sur la flèche droite et le coté droit du triangle s'affiche ( de même pour les 2 autres cotés ).

Mais voilà, lorsque j'appuie sur la flèche droite la ligne apparait ( et disparait une fois relâchée, normal ). Mais la ligne du bas étant constamment affichée semble perdre de ses couleurs : POURQUOI DONC ?

Voila le ( long ) code :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
#include "StdAfx.h"
#include <d3d9.h>
#include <d3dx9.h>
#include <windows.h>
#include <windowsx.h>
#include <iostream>
 
#pragma comment (lib, "d3d9.lib")
// define the screen resolution
#define SCREEN_WIDTH 800
#define SCREEN_HEIGHT 600
 
// 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
 
// function prototypes
void initD3D(HWND hWnd);    // sets up and initializes Direct3D
void render_line(void);    // renders a single frame
void cleanD3D(void);    // closes Direct3D and releases memory
 void init_graphicsB(void);    // 3D declarations
 void init_graphicsD(void);
 
struct CUSTOMVERTEX {FLOAT X, Y, Z, RHW; DWORD COLOR;};
#define CUSTOMFVF (D3DFVF_XYZRHW | D3DFVF_DIFFUSE)
 
// 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.lpszClassName = L"WindowClass";
 
    RegisterClassEx(&wc);
 
    hWnd = CreateWindowEx(NULL,
                          L"WindowClass",
                          L"Our Direct3D Program",
                          WS_OVERLAPPEDWINDOW,
                          0, 0,
                          SCREEN_WIDTH, SCREEN_HEIGHT,
                          NULL,
                          NULL,
                          hInstance,
                          NULL);
 
    ShowWindow(hWnd, nCmdShow);
 
    // set up and initialize Direct3D
    initD3D(hWnd);
 
    // 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;
		}
		init_graphicsB();
		render_line();
 
    }
 
    // clean up DirectX and COM
    cleanD3D();
 
    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;
		case WM_KEYDOWN:
			if (wParam == VK_RIGHT){ //User hit Escape, end the app
				init_graphicsD();
				render_line();
 
			}
    }
 
    return DefWindowProc (hWnd, message, wParam, lParam);
}
 
 
// this function initializes and prepares Direct3D for use
void initD3D(HWND hWnd)
{
    d3d = Direct3DCreate9(D3D_SDK_VERSION);
 
    D3DPRESENT_PARAMETERS d3dpp;
 
    ZeroMemory(&d3dpp, sizeof(d3dpp));
    d3dpp.Windowed = TRUE;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    d3dpp.hDeviceWindow = hWnd;
    d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
    d3dpp.BackBufferWidth = SCREEN_WIDTH;
    d3dpp.BackBufferHeight = SCREEN_HEIGHT;
 
    // 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);
}
 
 
// this is the function used to render a single frame
void render_line(void){
 
    d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
 
    d3ddev->BeginScene();
 
        // select which vertex format we are using
        d3ddev->SetFVF(CUSTOMFVF);
 
        // select the vertex buffer to display
        d3ddev->SetStreamSource(0, v_buffer, 0, sizeof(CUSTOMVERTEX));
        d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
 
 
    d3ddev->EndScene();
 
    d3ddev->Present(NULL, NULL, NULL, NULL);
}
 
 
// this is the function that cleans up Direct3D and COM
void cleanD3D(void)
{
    v_buffer->Release();    // close and release the vertex buffer
    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_graphicsB(void)
{
    // create the vertices using the CUSTOMVERTEX struct
    CUSTOMVERTEX vertices[] =
    {
		{ 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
        { 150.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 0), },
    };
 
    // create a vertex buffer interface called v_buffer
    d3ddev->CreateVertexBuffer(3*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();
}
void init_graphicsD(void)
{
    // create the vertices using the CUSTOMVERTEX struct
    CUSTOMVERTEX vertices[] =
    {       
        { 650.0f, 300.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
        { 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
    };
 
    // create a vertex buffer interface called v_buffer
    d3ddev->CreateVertexBuffer(3*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();
}

Merci d'avance pour vos réponses

**stardeath** · 27/01/2011, 21h36

bonsoir,

la ligne du bas n'est pas constamment affichée, voilà pourquoi :

ligne 72-86 :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
while(TRUE)
	{
		while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
 
		if(msg.message == WM_QUIT){
			break;
		}
		init_graphicsB();
		render_line();
 
	}

dans cette boucle tu recréés à chaque fois un nouveau vertex buffer qui écrase le précédent, stocké dans v_buffer;
et à chaque fois que tu appuies sur droite du recréés aussi un vertex buffer écrasant le précédent, donc étant donné que tu fais un afficher après chaque écrasement, en fait tu affiche chaque ligne à tour de rôle, donc elles apparaissent pales.

voilà un code qui devrait répondre à tes attentes :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
#include <d3d9.h>
#include <d3dx9.h>
#include <windows.h>
#include <windowsx.h>
#include <iostream>
 
#pragma comment (lib, "d3d9.lib")
// define the screen resolution
#define SCREEN_WIDTH 800
#define SCREEN_HEIGHT 600
 
// global declarations
LPDIRECT3D9 d3d;    // the pointer to our Direct3D interface
LPDIRECT3DDEVICE9 d3ddev;    // the pointer to the device class
 
LPDIRECT3DVERTEXBUFFER9 v_buffer_bas = NULL;    // pour stocker le coté gauche
LPDIRECT3DVERTEXBUFFER9 v_buffer_droit = NULL; // pour stocker le coté droit
 
bool affiche_le_cote_droit = false;
 
// function prototypes
void initD3D(HWND hWnd);    // sets up and initializes Direct3D
void render_line(void);    // renders a single frame
void cleanD3D(void);    // closes Direct3D and releases memory
void init_graphicsB(void);    // 3D declarations
void init_graphicsD(void);
 
struct CUSTOMVERTEX {FLOAT X, Y, Z, RHW; DWORD COLOR;};
#define CUSTOMFVF (D3DFVF_XYZRHW | D3DFVF_DIFFUSE)
 
// 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.lpszClassName = L"WindowClass";
 
	RegisterClassEx(&wc);
 
	hWnd = CreateWindowEx(NULL,
		L"WindowClass",
		L"Our Direct3D Program",
		WS_OVERLAPPEDWINDOW,
		0, 0,
		SCREEN_WIDTH, SCREEN_HEIGHT,
		NULL,
		NULL,
		hInstance,
		NULL);
 
	ShowWindow(hWnd, nCmdShow);
 
	// set up and initialize Direct3D
	initD3D(hWnd);
 
	// initialise les vb
	init_graphicsB();
	init_graphicsD();
 
	// 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;
		}
		render_line();
 
	}
 
	// clean up DirectX and COM
	cleanD3D();
 
	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;
		case WM_KEYDOWN:
			if (wParam == VK_RIGHT){ //User hit Escape, end the app
				affiche_le_cote_droit = true;
 
			}
			break;
		case WM_KEYUP:
			if(wParam == VK_RIGHT)
			{
				affiche_le_cote_droit = false;
			}
			break;
	}
 
	return DefWindowProc (hWnd, message, wParam, lParam);
}
 
 
// this function initializes and prepares Direct3D for use
void initD3D(HWND hWnd)
{
	d3d = Direct3DCreate9(D3D_SDK_VERSION);
 
	D3DPRESENT_PARAMETERS d3dpp;
 
	ZeroMemory(&d3dpp, sizeof(d3dpp));
	d3dpp.Windowed = TRUE;
	d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	d3dpp.hDeviceWindow = hWnd;
	d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
	d3dpp.BackBufferWidth = SCREEN_WIDTH;
	d3dpp.BackBufferHeight = SCREEN_HEIGHT;
 
	// 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);
}
 
 
// this is the function used to render a single frame
void render_line(void){
 
	d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
 
	d3ddev->BeginScene();
 
	// select which vertex format we are using
	d3ddev->SetFVF(CUSTOMFVF);
 
	// select the vertex buffer to display
	d3ddev->SetStreamSource(0, v_buffer_bas, 0, sizeof(CUSTOMVERTEX));
	d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
 
	if(affiche_le_cote_droit == true)
	{
		d3ddev->SetStreamSource(0, v_buffer_droit, 0, sizeof(CUSTOMVERTEX));
		d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
	}
 
	d3ddev->EndScene();
 
	d3ddev->Present(NULL, NULL, NULL, NULL);
}
 
 
// this is the function that cleans up Direct3D and COM
void cleanD3D(void)
{
	v_buffer_bas->Release();    // close and release the vertex buffer
	v_buffer_droit->Release();
	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_graphicsB(void)
{
	// create the vertices using the CUSTOMVERTEX struct
	CUSTOMVERTEX vertices[] =
	{
		{ 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
		{ 150.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 0), },
	};
 
	// create a vertex buffer interface called v_buffer
	d3ddev->CreateVertexBuffer(3*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_bas,
		NULL);
 
	VOID* pVoid;    // a void pointer
 
	// lock v_buffer and load the vertices into it
	v_buffer_bas->Lock(0, 0, (void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_bas->Unlock();
}
void init_graphicsD(void)
{
	// create the vertices using the CUSTOMVERTEX struct
	CUSTOMVERTEX vertices[] =
	{       
		{ 650.0f, 300.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
		{ 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
	};
 
	// create a vertex buffer interface called v_buffer
	d3ddev->CreateVertexBuffer(3*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_droit,
		NULL);
 
	VOID* pVoid;    // a void pointer
 
	// lock v_buffer and load the vertices into it
	v_buffer_droit->Lock(0, 0, (void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_droit->Unlock();
}

**Kiwii** · 27/01/2011, 22h32

Ok d'accord !

En tâtonnant j'avais pas réussi à creer d'autres buffers que le v_buffer que j'utilisais. Merci bien

**Kiwii** · 28/01/2011, 17h02

Ça mérite de faire un Double Post !

A propos de l'utilisation des buffers, quelle est la meilleure méthode ?
Un buffer pour chaque objet ? Un buffer pour chaque groupe d'objet ( ayant la même fonction : sous un Mario un buffer pour le fond, un pour chaque sprite ) ?

Si j'ai bien compris : il existe 1 à 3 buffers ( voire plus ) pour l'écran qui switchent qui est défini lors de la création du display. A côté on peux créer autant de buffers que l'on veut et les associer à des Primitives / Images / Sprites.

**stardeath** · 28/01/2011, 19h55

j'ai pas vraiment de conseil là dessus, personnellement, j'ai une autre limite : celle de ne pas trop faire appel à la méthode Draw*, si plus d'une centaine de fois pas frame, ça handicape le rendu.

**Kiwii** · 29/01/2011, 12h35

J'ai mis un buffer à tout mes objets ( un carré qui s'affiche tout le temps et 3 lignes qui s'affichent si on appuie sur les flèches ).
Mais j'ai une impression de déjà-vu, les buffers n'ont pas l'air de suivre le mouvement : la faute au while(true) ? Et donc la faute à un appel à Draw trop de fois par frame ?

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
#include "StdAfx.h"
#include <d3d9.h>
#include <d3dx9.h>
#include <windows.h>
#include <windowsx.h>
#include <iostream>
 
#pragma comment (lib, "d3d9.lib")
// define the screen resolution
#define SCREEN_WIDTH 1000
#define SCREEN_HEIGHT 600
 
// global declarations
LPDIRECT3D9 d3d;    // the pointer to our Direct3D interface
LPDIRECT3DDEVICE9 d3ddev;    // the pointer to the device class
 
LPDIRECT3DVERTEXBUFFER9 v_buffer_bas = NULL;    // pour stocker le coté gauche
LPDIRECT3DVERTEXBUFFER9 v_buffer_droit = NULL; // pour stocker le coté droit
LPDIRECT3DVERTEXBUFFER9 v_buffer_gauche = NULL;
LPDIRECT3DVERTEXBUFFER9 v_buffer_carre = NULL;
 
 
bool afficheDroit = false;
bool afficheGauche = false;
bool afficheBas = false;
 
// function prototypes
void initD3D(HWND hWnd);    // sets up and initializes Direct3D
void render_line(void);
void render_carre(void);
void cleanD3D(void);    // closes Direct3D and releases memory
void init_graphicsB(void);    // 3D declarations
void init_graphicsD(void);
void init_graphicsG(void);
 
void init_graphicsCarre(void);
 
struct CUSTOMVERTEX {FLOAT X, Y, Z, RHW; DWORD COLOR;};
#define CUSTOMFVF (D3DFVF_XYZRHW | D3DFVF_DIFFUSE)
 
// 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.lpszClassName = L"WindowClass";
 
	RegisterClassEx(&wc);
 
	hWnd = CreateWindowEx(NULL,
		L"WindowClass",
		L"Our Direct3D Program",
		WS_OVERLAPPEDWINDOW,
		0, 0,
		SCREEN_WIDTH, SCREEN_HEIGHT,
		NULL,
		NULL,
		hInstance,
		NULL);
 
	ShowWindow(hWnd, nCmdShow);
 
	// set up and initialize Direct3D
	initD3D(hWnd);
 
	// initialise les vb
	init_graphicsB();
	init_graphicsD();
	init_graphicsG();
	init_graphicsCarre();
 
	// enter the main loop:
 
	MSG msg;
 
	while(TRUE)
	{
		d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
		while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)){
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
 
		if(msg.message == WM_QUIT){
			break;
		}
		render_line();	
		render_carre();
 
	}
 
	// clean up DirectX and COM
	cleanD3D();
 
	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;
 
		case WM_KEYDOWN:
			if (wParam == VK_RIGHT){ 
				afficheDroit = true;
 
			}			
			if (wParam == VK_LEFT){ 
				afficheGauche = true;
 
			}			
			if (wParam == VK_DOWN){ 
				afficheBas = true;
 
			}
			break;
		case WM_KEYUP:
			if(wParam == VK_RIGHT){
				afficheDroit = false;
			}
			if (wParam == VK_LEFT){ 
				afficheGauche = false;
 
			}
			if (wParam == VK_DOWN){ 
				afficheBas = false;
			}
			break;
	}
 
	return DefWindowProc (hWnd, message, wParam, lParam);
}
 
 
// this function initializes and prepares Direct3D for use
void initD3D(HWND hWnd)
{
	d3d = Direct3DCreate9(D3D_SDK_VERSION);
 
	D3DPRESENT_PARAMETERS d3dpp;
 
	ZeroMemory(&d3dpp, sizeof(d3dpp));
	d3dpp.Windowed = TRUE;
	d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	d3dpp.hDeviceWindow = hWnd;
	d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
	d3dpp.BackBufferWidth = SCREEN_WIDTH;
	d3dpp.BackBufferHeight = SCREEN_HEIGHT;
 
	// 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);
}
 
 
// this is the function used to render a single frame
void render_line(void){
 
 
 
	d3ddev->BeginScene();
 
	// select which vertex format we are using
	d3ddev->SetFVF(CUSTOMFVF);
 
	// select the vertex buffer to display
 
	if(afficheDroit == true){
		d3ddev->SetStreamSource(0, v_buffer_droit, 0, sizeof(CUSTOMVERTEX));
		d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
	}
	if(afficheGauche == true){
		d3ddev->SetStreamSource(0, v_buffer_gauche, 0, sizeof(CUSTOMVERTEX));
		d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
	}
	if(afficheBas == true){
		d3ddev->SetStreamSource(0, v_buffer_bas, 0, sizeof(CUSTOMVERTEX));
		d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
	}
 
	d3ddev->EndScene();
 
	d3ddev->Present(NULL, NULL, NULL, NULL);
}
 
 
 void render_carre(void){
 
	d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
 
	d3ddev->BeginScene();
 
	// select which vertex format we are using
	d3ddev->SetFVF(CUSTOMFVF);
 
	// select the vertex buffer to display
 
 
	d3ddev->SetStreamSource(0, v_buffer_carre, 0, sizeof(CUSTOMVERTEX));
	d3ddev->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 2);
 
 
	d3ddev->EndScene();
 
	d3ddev->Present(NULL, NULL, NULL, NULL);
}
 
 
// this is the function that cleans up Direct3D and COM
void cleanD3D(void){
	v_buffer_bas->Release();    // close and release the vertex buffer
	v_buffer_droit->Release();
	v_buffer_gauche->Release(); 
	v_buffer_carre->Release(); 
	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_graphicsB(void)
{
	// create the vertices using the CUSTOMVERTEX struct
	CUSTOMVERTEX vertices[] =
	{
		{ 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 0), },
		{ 350.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(250, 0, 0), },
	};
 
 
	// create a vertex buffer interface called v_buffer
	d3ddev->CreateVertexBuffer(2*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_bas,
		NULL);
 
	VOID* pVoid;    // a void pointer
 
	// lock v_buffer and load the vertices into it
	v_buffer_bas->Lock(0, 0, (void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_bas->Unlock();
}
void init_graphicsD(void)
{
	// create the vertices using the CUSTOMVERTEX struct
	CUSTOMVERTEX vertices[] =
	{       
		{ 500.0f, 200.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
		{ 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
	};
 
	// create a vertex buffer interface called v_buffer
	d3ddev->CreateVertexBuffer(2*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_droit,
		NULL);
 
	VOID* pVoid;    // a void pointer
 
	// lock v_buffer and load the vertices into it
	v_buffer_droit->Lock(0, 0, (void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_droit->Unlock();
}
void init_graphicsG(void){
	CUSTOMVERTEX vertices[] = 
	{
		{ 500.0f, 200.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
		{ 350.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
	};
 
	d3ddev->CreateVertexBuffer(2*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_gauche,
		NULL);
 
	VOID* pVoid;
 
	v_buffer_gauche->Lock(0,0,(void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_droit->Unlock();
}
 
void init_graphicsCarre(void){
	CUSTOMVERTEX vertices[] = 
	{
		{ 10.0f, 100.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 255), },
		{ 10.0f, 10.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
		{ 100.0f, 100.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 255), },
 
		{ 100.0f, 100.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 255), },
		{ 10.0f, 10.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
		{ 100.0f, 10.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
	};
 
	d3ddev->CreateVertexBuffer(6*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_carre,
		NULL);
 
	VOID* pVoid;
 
	v_buffer_carre->Lock(0,0,(void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_carre->Unlock();
}

Il faudrait que j'integre un timer rafraichissant x fois l'image par seconde en faisant x appels à render_carre() et render_line() ?

Merci d'avance

**stardeath** · 29/01/2011, 19h04

il ne faut faire appel à BeginScene, Clear, EndScene et Present qu'une seule fois par frame (ce que j'appelle frame c'est un tour de boucle du while(true) ) :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
#include "StdAfx.h"
#include <d3d9.h>
#include <d3dx9.h>
#include <windows.h>
#include <windowsx.h>
#include <iostream>
 
#pragma comment (lib, "d3d9.lib")
// define the screen resolution
#define SCREEN_WIDTH 1000
#define SCREEN_HEIGHT 600
 
// global declarations
LPDIRECT3D9 d3d;    // the pointer to our Direct3D interface
LPDIRECT3DDEVICE9 d3ddev;    // the pointer to the device class
 
LPDIRECT3DVERTEXBUFFER9 v_buffer_bas = NULL;    // pour stocker le coté gauche
LPDIRECT3DVERTEXBUFFER9 v_buffer_droit = NULL; // pour stocker le coté droit
LPDIRECT3DVERTEXBUFFER9 v_buffer_gauche = NULL;
LPDIRECT3DVERTEXBUFFER9 v_buffer_carre = NULL;
 
 
bool afficheDroit = false;
bool afficheGauche = false;
bool afficheBas = false;
 
// function prototypes
void initD3D(HWND hWnd);    // sets up and initializes Direct3D
 
void BeginRender(); // pour commencer le rendu
void EndRender(); // pour finir le rendu
 
void render_line(void);
void render_carre(void);
void cleanD3D(void);    // closes Direct3D and releases memory
void init_graphicsB(void);    // 3D declarations
void init_graphicsD(void);
void init_graphicsG(void);
 
void init_graphicsCarre(void);
 
struct CUSTOMVERTEX {FLOAT X, Y, Z, RHW; DWORD COLOR;};
#define CUSTOMFVF (D3DFVF_XYZRHW | D3DFVF_DIFFUSE)
 
// 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.lpszClassName = L"WindowClass";
 
	RegisterClassEx(&wc);
 
	hWnd = CreateWindowEx(NULL,
		L"WindowClass",
		L"Our Direct3D Program",
		WS_OVERLAPPEDWINDOW,
		0, 0,
		SCREEN_WIDTH, SCREEN_HEIGHT,
		NULL,
		NULL,
		hInstance,
		NULL);
 
	ShowWindow(hWnd, nCmdShow);
 
	// set up and initialize Direct3D
	initD3D(hWnd);
 
	// initialise les vb
	init_graphicsB();
	init_graphicsD();
	init_graphicsG();
	init_graphicsCarre();
 
	// enter the main loop:
 
	MSG msg;
 
	while(TRUE)
	{
		d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
		while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)){
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
 
		if(msg.message == WM_QUIT){
			break;
		}
		BeginRender();
		render_line();	
		render_carre();
		EndRender();
	}
 
	// clean up DirectX and COM
	cleanD3D();
 
	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;
 
case WM_KEYDOWN:
	if (wParam == VK_RIGHT){ 
		afficheDroit = true;
 
	}			
	if (wParam == VK_LEFT){ 
		afficheGauche = true;
 
	}			
	if (wParam == VK_DOWN){ 
		afficheBas = true;
 
	}
	break;
case WM_KEYUP:
	if(wParam == VK_RIGHT){
		afficheDroit = false;
	}
	if (wParam == VK_LEFT){ 
		afficheGauche = false;
 
	}
	if (wParam == VK_DOWN){ 
		afficheBas = false;
	}
	break;
	}
 
	return DefWindowProc (hWnd, message, wParam, lParam);
}
 
 
// this function initializes and prepares Direct3D for use
void initD3D(HWND hWnd)
{
	d3d = Direct3DCreate9(D3D_SDK_VERSION);
 
	D3DPRESENT_PARAMETERS d3dpp;
 
	ZeroMemory(&d3dpp, sizeof(d3dpp));
	d3dpp.Windowed = TRUE;
	d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	d3dpp.hDeviceWindow = hWnd;
	d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
	d3dpp.BackBufferWidth = SCREEN_WIDTH;
	d3dpp.BackBufferHeight = SCREEN_HEIGHT;
 
	// 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);
}
 
void BeginRender()
{
	d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
 
	d3ddev->BeginScene();
}
 
void EndRender()
{
	d3ddev->EndScene();
 
	d3ddev->Present(NULL, NULL, NULL, NULL);
}
 
// this is the function used to render a single frame
void render_line(void){
 
	// select which vertex format we are using
	d3ddev->SetFVF(CUSTOMFVF);
 
	// select the vertex buffer to display
 
	if(afficheDroit == true){
		d3ddev->SetStreamSource(0, v_buffer_droit, 0, sizeof(CUSTOMVERTEX));
		d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
	}
	if(afficheGauche == true){
		d3ddev->SetStreamSource(0, v_buffer_gauche, 0, sizeof(CUSTOMVERTEX));
		d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
	}
	if(afficheBas == true){
		d3ddev->SetStreamSource(0, v_buffer_bas, 0, sizeof(CUSTOMVERTEX));
		d3ddev->DrawPrimitive(D3DPT_LINELIST, 0, 1);
	}
}
 
 
void render_carre(void){
 
	// select which vertex format we are using
	d3ddev->SetFVF(CUSTOMFVF);
 
	// select the vertex buffer to display
 
 
	d3ddev->SetStreamSource(0, v_buffer_carre, 0, sizeof(CUSTOMVERTEX));
	d3ddev->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 2);
}
 
 
// this is the function that cleans up Direct3D and COM
void cleanD3D(void){
	v_buffer_bas->Release();    // close and release the vertex buffer
	v_buffer_droit->Release();
	v_buffer_gauche->Release(); 
	v_buffer_carre->Release(); 
	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_graphicsB(void)
{
	// create the vertices using the CUSTOMVERTEX struct
	CUSTOMVERTEX vertices[] =
	{
		{ 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 0), },
		{ 350.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(250, 0, 0), },
	};
 
 
	// create a vertex buffer interface called v_buffer
	d3ddev->CreateVertexBuffer(2*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_bas,
		NULL);
 
	VOID* pVoid;    // a void pointer
 
	// lock v_buffer and load the vertices into it
	v_buffer_bas->Lock(0, 0, (void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_bas->Unlock();
}
void init_graphicsD(void)
{
	// create the vertices using the CUSTOMVERTEX struct
	CUSTOMVERTEX vertices[] =
	{       
		{ 500.0f, 200.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
		{ 650.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), },
	};
 
	// create a vertex buffer interface called v_buffer
	d3ddev->CreateVertexBuffer(2*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_droit,
		NULL);
 
	VOID* pVoid;    // a void pointer
 
	// lock v_buffer and load the vertices into it
	v_buffer_droit->Lock(0, 0, (void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_droit->Unlock();
}
void init_graphicsG(void){
	CUSTOMVERTEX vertices[] = 
	{
		{ 500.0f, 200.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
		{ 350.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
	};
 
	d3ddev->CreateVertexBuffer(2*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_gauche,
		NULL);
 
	VOID* pVoid;
 
	v_buffer_gauche->Lock(0,0,(void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_droit->Unlock();
}
 
void init_graphicsCarre(void){
	CUSTOMVERTEX vertices[] = 
	{
		{ 10.0f, 100.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 255), },
		{ 10.0f, 10.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
		{ 100.0f, 100.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 255), },
 
		{ 100.0f, 100.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 255), },
		{ 10.0f, 10.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
		{ 100.0f, 10.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), },
	};
 
	d3ddev->CreateVertexBuffer(6*sizeof(CUSTOMVERTEX),
		0,
		CUSTOMFVF,
		D3DPOOL_MANAGED,
		&v_buffer_carre,
		NULL);
 
	VOID* pVoid;
 
	v_buffer_carre->Lock(0,0,(void**)&pVoid, 0);
	memcpy(pVoid, vertices, sizeof(vertices));
	v_buffer_carre->Unlock();
}

Mécanisme de DirectX - Buffers

DirectX

Discussions similaires

Partager

Partager