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This thread is locked; no one can reply to it.
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| allegro performance problems |
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malleus
Member #8,425
March 2007
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I am using a hp dv6000t laptop with a base install of Debian linux. It have a 256mb Geforce go 7400 nvidia graphics card. When I run my programs they get awful framerate. I have run some allegro examples and they all seem to run perfectly. It seems that just my programs lag. Why do they lag? It would be helpful if you told me exactly what to do as I am new to allegro and linux in general. I read somewhere that |
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relpatseht
Member #5,034
September 2004
 |
On Linux, I don't think there is any hardware acceleration of Allegro programs, therefore, if you wish for your programs to perform better, the only advice I can give it to write better code. Look into dirty rectangles for updating the screen and make sure you only blit objects which will actually be displayed.
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HoHo
Member #4,534
April 2004
 |
How big is the framerate difference compared to windows? __________ |
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Evert
Member #794
November 2000
 |
Quote: When I run my programs they get awful framerate. I have run some allegro examples and they all seem to run perfectly. It seems that just my programs lag. Why do they lag? Post code. We can't tell what's different between your program and Allegro's examples without seeing them. Quote: It would be helpful if you told me exactly what to do as I am new to allegro and linux in general.
Post code. Quote: I read somewhere that using DGA 2.0 drivers made it fast or something. I have tried that but it had a segmentation fault. DGA 2 allows you to use hardware acceleration in X11, but it's officially deprecated (in X11, not Allegro itself). Note that the driver requires root privileges and will fail to initialise if it can't get them (meaning you get a segfault if you don't check the return value of set_gfx_mode). |
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malleus
Member #8,425
March 2007
|
As you can tell the following is a pong ripoff. Please excuse my global variables and other bad code. I noticed that it only lags when i draw shapes to the screen not bitmaps. On my computer it runs smoothly for three seconds and then lags sooo badly. variables.h file 1BITMAP *opening;
2BITMAP *buffer;
3
4int temp;
5int a=0;
6
7
8int p1Score;
9int p2Score;
10//player one paddle//
11int xP1=20;
12int yP1=20;
13
14
15int tempXP1;
16int tempYP1;
17
18//player two paddle//
19int xP2=800;
20int yP2=360;
21
22int tempXP2;
23int tempYP2;
24
25//ball//
26int xBall=420;
27int yBall=460;
28
29int tempXBall;
30int tempYBall;
31//--------------------------//
32
33int dir=1; //1= up, left. 2= down, left. 3=up, right. 4=down, right.
misc.h 1void draw();
2void player1();
3void player2();
4void ballMovement();
5
6
7void draw()
8{
9 acquire_screen();
10
11 textprintf_ex(buffer, font, 0, 460, makecol(0, 0, 0), -1, "Player 1 Score: %d", (p1Score-1));
12 textprintf_ex(buffer, font, 0, 460, makecol(255, 255, 255), -1, "Player 1 Score: %d", p1Score);
13
14 textprintf_ex(buffer, font, 700, 460, makecol(0, 0, 0), -1, "Player 2 Score: %d", (p2Score-1));
15 textprintf_ex(buffer, font, 700, 460, makecol(255, 255, 255), -1, "Player 2 Score: %d", p2Score);
16
17 rectfill(buffer, tempXP1, tempYP1, (tempXP1+20), (tempYP1+100), makecol(0, 0, 0)); //clear
18 rect(buffer, xP1, yP1, (xP1+20), (yP1+100), makecol(255, 255, 255)); //player one paddle
19
20 rectfill(buffer, tempXP2, tempYP2, (tempXP2+20), (tempYP2+100), makecol(0, 0, 0)); //clear
21 rect(buffer, xP2, yP2, (xP2+20), (yP2+100), makecol(255, 255, 255)); //player two paddle
22
23 circlefill(buffer, tempXBall, tempYBall, 10, makecol(0, 0, 0));
24 circle(buffer, xBall, yBall, 10, makecol(255, 255, 255));
25
26 line(buffer, 0, 10, 840, 10, makecol(255, 255, 255));
27 line(buffer, 0, 470, 840, 470, makecol(255, 255, 255));
28 line(buffer, 420, 0, 420, 480, makecol(255, 255, 255));
29
30 draw_sprite(screen, buffer, 0, 0);
31
32 a++;
33 if((a%3)==0)
34 rest(1);
35
36 release_screen();
37}
38void player1()
39{
40 clear_keybuf();
41
42 if(key[KEY_W] && (yP1-2)!=10)
43 yP1-=2;
44 if(key[KEY_S] && (yP1+102)!=470)
45 yP1+=2;
46 if(key[KEY_D] && (xP1+22)!=420)
47 xP1+=2;
48 if(key[KEY_A] && (xP1-2)!=0)
49 xP1-=2;
50
51}
52void player2()
53{
54 clear_keybuf();
55
56 if(key[KEY_UP] && (yP2-2)!=10)
57 yP2-=2;
58 if(key[KEY_DOWN] && (yP2+102)!=470)
59 yP2+=2;
60 if(key[KEY_RIGHT] && (xP2+20)!=840)
61 xP2+=2;
62 if(key[KEY_LEFT] && (xP2-2)!=420)
63 xP2-=2;
64}
65void ballmovement()
66{
67 switch(dir)
68 {
69 case 1:
70 if((yBall-10)==10)
71 dir=2;
72 else if((xBall-10)==(xP1+20))
73 for( int c=yP1; c<(yP1+100);c++)
74 if((yBall-10)==c)
75 dir=3;
76 yBall-=2, xBall-=2;
77 break;
78 case 2:
79 if((yBall+10)==470)
80 dir=1;
81 else if((xBall-10)==(xP1+20))
82 for( int c=yP1; c<(yP1+100);c++)
83 if((yBall-10)==c)
84 dir=4;
85 yBall+=2, xBall-=2;
86 break;
87 case 3:
88 if((yBall-10)==10)
89 dir=4;
90 else if((xBall+10)==xP2)
91 for( int c=yP2; c<(yP2+100);c++)
92 if((yBall+10)==c)
93 dir=1;
94 yBall-=2, xBall+=2;
95 break;
96 case 4:
97 if((yBall+10)==470)
98 dir=3;
99 else if((xBall+10)==xP2)
100 for( int c=yP2; c<(yP2+100);c++)
101 if((yBall+10)==c)
102 dir=2;
103 yBall+=2, xBall+=2;
104 break;
105 }
106}
main.cpp 1//Pong 2.0
2//by Sharif Mabie-Alkhaldi
3#include <allegro.h>
4#include"variables.h"
5#include "misc.h"
6
7int main()
8{
9 allegro_init();
10 install_keyboard();
11 set_color_depth(16);
12
13 set_gfx_mode(GFX_AUTODETECT_WINDOWED, 840, 480, 0, 0);
14
15 opening=load_bitmap("opening.bmp", 0);
16 buffer=create_bitmap(840, 480);
17
18 start:
19
20 p1Score=0;
21 p2Score=0;
22
23 acquire_screen();
24 draw_sprite(buffer, opening, 0, 0);
25 draw_sprite(screen, buffer, 0, 0);
26 release_screen();
27
28 readkey();
29 acquire_screen();
30 clear_to_color( buffer, makecol(0, 0, 0));
31 release_screen();
32
33 while(!key[KEY_ESC])
34 {
35 tempXP1=xP1;
36 tempXP2=xP2;
37
38 tempYP1=yP1;
39 tempYP2=yP2;
40
41 tempXBall=xBall;
42 tempYBall=yBall;
43
44 ballmovement();
45
46 player1();
47 player2();
48
49 if((xBall+10)==0)
50 {
51 p2Score++;
52
53 yBall=460;
54 xBall=420;
55 }
56 else if((xBall-10)==840)
57 {
58 p1Score++;
59
60 yBall=460;
61 xBall=420;
62 }
63
64 if(p1Score==5)
65 {
66 textout(screen, font, "Player one wins! Do you want to play again y/esc?", 250, 240, 50);
67 readkey();
68 if(key[KEY_Y])
69 goto start;
70 }
71 else if(p2Score==5)
72 {
73 textout(screen, font, "Player two wins! Do you want to play again y/esc?", 250, 240, 50);
74 readkey();
75 if(key[KEY_Y])
76 goto start;
77 }
78 draw();
79 }while(!key[KEY_ESC]);
80 return 0;
81}
82END_OF_MAIN();
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HoHo
Member #4,534
April 2004
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Loose the acquire/release screen functions and use regular blit to copy buffer to screen. IIRC, acquire screen was good only when you had to access the screen bitmap several times per frame. Blitting buffer to screen does not qualify for such a situation. You don't seem to be clearing the buffer each frame. Do you always redraw the entire screen every frame? From the code it doesn't look like that. Also you might want to learn about allegro timers. Using only rest(1) for timing will not work for anyone else but you. __________ |
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X-G
Member #856
December 2000
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First off, get rid of all those acquire_screen()s. And as a side note, use blit instead of draw_sprite to copy the backbuffer to screen. Secondly, your desktop is likely running in 32-bit, so opening a 16-bit window may cause further slowdowns. On an unrelated but vital note, you don't seem to have any kind of timer logic. EDIT: Oh, you think you're clever, do you HoHo? I'm gonna cut you. grumbles -- |
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malleus
Member #8,425
March 2007
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It still lags. Good someone post code that runs at a decent rate on linux. Theres seems to be a bit of a increase in performance but nothing vary noticable. |
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HoHo
Member #4,534
April 2004
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What's the FPS you are getting? __________ |
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malleus
Member #8,425
March 2007
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3-4 at best. Could some one post code? |
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X-G
Member #856
December 2000
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That wouldn't help. What's your code look like now? -- |
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malleus
Member #8,425
March 2007
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Ok sorry, it did in fact increase performance considerably. But it still gets sub par performance. When I move the paddles its kinda of jumpy. Heres my code. main.cpp 1//Pong 2.0
2//by Sharif Mabie-Alkhaldi
3#include <allegro.h>
4#include"variables.h"
5#include "misc.h"
6
7int main()
8{
9 allegro_init();
10 install_keyboard();
11 set_color_depth(16);
12
13 set_gfx_mode(GFX_AUTODETECT_WINDOWED, 840, 480, 0, 0);
14
15 opening=load_bitmap("opening.bmp", 0);
16 buffer=create_bitmap(840, 480);
17
18 start:
19
20 p1Score=0;
21 p2Score=0;
22
23 blit(opening, buffer, 0, 0, 0, 0, opening->w, opening->h);
24 blit(buffer, screen, 0, 0, 0, 0, buffer->w, buffer->h);
25
26 readkey();
27 clear_to_color( buffer, makecol(0, 0, 0));
28
29 while(!key[KEY_ESC])
30 {
31 tempXP1=xP1;
32 tempXP2=xP2;
33
34 tempYP1=yP1;
35 tempYP2=yP2;
36
37 tempXBall=xBall;
38 tempYBall=yBall;
39
40 ballmovement();
41
42 player1();
43 player2();
44
45 if((xBall+10)==0)
46 {
47 p2Score++;
48
49 yBall=460;
50 xBall=420;
51 }
52 else if((xBall-10)==840)
53 {
54 p1Score++;
55
56 yBall=460;
57 xBall=420;
58 }
59
60 if(p1Score==5)
61 {
62 textout(screen, font, "Player one wins! Do you want to play again y/esc?", 250, 240, 50);
63 readkey();
64 if(key[KEY_Y])
65 goto start;
66 }
67 else if(p2Score==5)
68 {
69 textout(screen, font, "Player two wins! Do you want to play again y/esc?", 250, 240, 50);
70 readkey();
71 if(key[KEY_Y])
72 goto start;
73 }
74 draw();
75 }while(!key[KEY_ESC]);
76 return 0;
77}
78
79
80END_OF_MAIN();
misc.h 1void draw();
2void player1();
3void player2();
4void ballMovement();
5
6
7void draw()
8{
9
10 textprintf_ex(buffer, font, 0, 460, makecol(0, 0, 0), -1, "Player 1 Score: %d", (p1Score-1));
11 textprintf_ex(buffer, font, 0, 460, makecol(255, 255, 255), -1, "Player 1 Score: %d", p1Score);
12
13 textprintf_ex(buffer, font, 700, 460, makecol(0, 0, 0), -1, "Player 2 Score: %d", (p2Score-1));
14 textprintf_ex(buffer, font, 700, 460, makecol(255, 255, 255), -1, "Player 2 Score: %d", p2Score);
15
16 rectfill(buffer, tempXP1, tempYP1, (tempXP1+20), (tempYP1+100), makecol(0, 0, 0)); //clear
17 rect(buffer, xP1, yP1, (xP1+20), (yP1+100), makecol(255, 255, 255)); //player one paddle
18
19 rectfill(buffer, tempXP2, tempYP2, (tempXP2+20), (tempYP2+100), makecol(0, 0, 0)); //clear
20 rect(buffer, xP2, yP2, (xP2+20), (yP2+100), makecol(255, 255, 255)); //player two paddle
21
22 circlefill(buffer, tempXBall, tempYBall, 10, makecol(0, 0, 0));
23 circle(buffer, xBall, yBall, 10, makecol(255, 255, 255));
24
25 line(buffer, 0, 10, 840, 10, makecol(255, 255, 255));
26 line(buffer, 0, 470, 840, 470, makecol(255, 255, 255));
27 line(buffer, 420, 0, 420, 480, makecol(255, 255, 255));
28
29 blit(buffer, screen, 0, 0, 0, 0, buffer->w, buffer->h);
30
31 a++;
32 if((a%3)==0)
33 rest(1);
34}
35void player1()
36{
37 clear_keybuf();
38
39 if(key[KEY_W] && (yP1-2)!=10)
40 yP1-=2;
41 if(key[KEY_S] && (yP1+102)!=470)
42 yP1+=2;
43 if(key[KEY_D] && (xP1+22)!=420)
44 xP1+=2;
45 if(key[KEY_A] && (xP1-2)!=0)
46 xP1-=2;
47
48}
49void player2()
50{
51 clear_keybuf();
52
53 if(key[KEY_UP] && (yP2-2)!=10)
54 yP2-=2;
55 if(key[KEY_DOWN] && (yP2+102)!=470)
56 yP2+=2;
57 if(key[KEY_RIGHT] && (xP2+20)!=840)
58 xP2+=2;
59 if(key[KEY_LEFT] && (xP2-2)!=420)
60 xP2-=2;
61}
62void ballmovement()
63{
64 switch(dir)
65 {
66 case 1:
67 if((yBall-10)==10)
68 dir=2;
69 else if((xBall-10)==(xP1+20))
70 for( int c=yP1; c<(yP1+100);c++)
71 if((yBall-10)==c)
72 dir=3;
73 yBall-=2, xBall-=2;
74 break;
75 case 2:
76 if((yBall+10)==470)
77 dir=1;
78 else if((xBall-10)==(xP1+20))
79 for( int c=yP1; c<(yP1+100);c++)
80 if((yBall-10)==c)
81 dir=4;
82 yBall+=2, xBall-=2;
83 break;
84 case 3:
85 if((yBall-10)==10)
86 dir=4;
87 else if((xBall+10)==xP2)
88 for( int c=yP2; c<(yP2+100);c++)
89 if((yBall+10)==c)
90 dir=1;
91 yBall-=2, xBall+=2;
92 break;
93 case 4:
94 if((yBall+10)==470)
95 dir=3;
96 else if((xBall+10)==xP2)
97 for( int c=yP2; c<(yP2+100);c++)
98 if((yBall+10)==c)
99 dir=2;
100 yBall+=2, xBall+=2;
101 break;
102 }
103}
variables.h 1BITMAP *opening;
2BITMAP *buffer;
3
4int temp;
5int a=0;
6
7
8int p1Score;
9int p2Score;
10//player one paddle//
11int xP1=20;
12int yP1=20;
13
14
15int tempXP1;
16int tempYP1;
17
18//player two paddle//
19int xP2=800;
20int yP2=360;
21
22int tempXP2;
23int tempYP2;
24
25//ball//
26int xBall=420;
27int yBall=460;
28
29int tempXBall;
30int tempYBall;
31//--------------------------//
32
33int dir=1; //1= up, left. 2= down, left. 3=up, right. 4=down, right.
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X-G
Member #856
December 2000
|
You still haven't changed your color depth to 32-bit (assuming that's what your desktop is running). Also, are you running this as root? And, finally, make some proper timing logic. rest() is not a good way to do timing. -- |
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HoHo
Member #4,534
April 2004
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I compiled and tested your code and it ran rather nicely on my Linux box in both, 16bit and 32bit when my desktop was 32bit. I think it was around 200-400FPS. It might be because my CPU is quite a bit above the average though. Also, do you know your rest() doesn't work at all? Problem is you don't install timers. Of cource rest() is not the thing to make your game play at decent framerate. Please learn about timers and proper frame rate keeping. You can start by reading this: __________ |
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malleus
Member #8,425
March 2007
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Ok I think I added some timers correctly. It runs alot better now. Why does my fps flux? Anyway heres my code. for some unknown reason when I post my code it gets main.cpp 1//Pong 2.0
2
3//by Sharif Mabie-Alkhaldi
4
5#include <allegro.h>
6
7#include"variables.h"
8
9
10
11
12
13volatile int ticks=0;
14
15int Frames=0;
16
17int fps=0;
18
19int DidTick=0;
20
21int nticks;
22
23
24#include "misc.h"
25
26
27void ticker()
28
29{
30
31 ticks++;
32
33}END_OF_FUNCTION(ticker)
34
35
36
37int main()
38
39{
40
41 allegro_init();
42
43 install_keyboard();
44
45 install_timer();
46
47 set_color_depth(32);
48
49
50
51 set_gfx_mode(GFX_AUTODETECT_WINDOWED, 840, 480, 0, 0);
52
53
54
55 LOCK_VARIABLE(ticks);
56
57 LOCK_FUNCTION(ticker);
58
59
60
61 install_int_ex(ticker, BPS_TO_TIMER(300));
62
63
64
65 opening=load_bitmap("opening.bmp", 0);
66
67 buffer=create_bitmap(840, 480);
68
69
70
71 start:
72
73
74
75 p1Score=0;
76
77 p2Score=0;
78
79
80
81 blit(opening, buffer, 0, 0, 0, 0, opening->w, opening->h);
82
83 blit(buffer, screen, 0, 0, 0, 0, buffer->w, buffer->h);
84
85
86
87 readkey();
88
89 clear_to_color( buffer, makecol(0, 0, 0));
90
91
92
93
94
95
96
97 while(!key[KEY_ESC])
98
99 {
100
101 tempXP1=xP1;
102
103 tempXP2=xP2;
104
105
106
107 tempYP1=yP1;
108
109 tempYP2=yP2;
110
111
112
113 tempXBall=xBall;
114
115 tempYBall=yBall;
116
117
118
119 nticks=ticks;
120
121 ticks=0;
122
123
124
125
126
127 for(;nticks>0;nticks--)
128
129 {
130
131
132
133
134
135 ballmovement();
136
137
138
139 player1();
140
141 player2();
142
143
144
145 if((xBall+10)==0)
146
147 {
148
149 p2Score++;
150
151
152
153 yBall=460;
154
155 xBall=420;
156
157 }
158
159 else if((xBall-10)==840)
160
161 {
162
163 p1Score++;
164
165
166
167 yBall=460;
168
169 xBall=420;
170
171 }
172
173
174
175 if(p1Score==5)
176
177 {
178
179 textout(screen, font, "Player one wins! Do you want to play again y/esc?", 250, 240, 50);
180
181 readkey();
182
183 if(key[KEY_Y])
184
185 goto start;
186
187 }
188
189 else if(p2Score==5)
190
191 {
192
193 textout(screen, font, "Player two wins! Do you want to play again y/esc?", 250, 240, 50);
194
195 readkey();
196
197 if(key[KEY_Y])
198
199 goto start;
200
201 }
202
203 DidTick++;
204
205 if(DidTick==60)
206
207 {
208
209 fps=Frames;
210
211 DidTick=0;
212
213 Frames=0;
214
215 }
216
217 }
218
219 clear_to_color(buffer, makecol(0,0,0));
220
221 draw();
222
223
224
225
226
227 Frames++;
228
229 }while(!key[KEY_ESC]);
230
231 return 0;
232
233}
234
235
236
237
238
239END_OF_MAIN();
misc.h 1void draw();
2
3void player1();
4
5void player2();
6
7void ballMovement();
8
9
10
11
12
13void draw()
14
15{
16
17 textprintf_ex(buffer, font, 0, 460, makecol(0, 0, 0), -1, "Player 1 Score: %d", (p1Score-1));
18
19 textprintf_ex(buffer, font, 0, 460, makecol(255, 255, 255), -1, "Player 1 Score: %d", p1Score);
20
21
22
23 textprintf_ex(buffer, font, 700, 460, makecol(0, 0, 0), -1, "Player 2 Score: %d", (p2Score-1));
24
25 textprintf_ex(buffer, font, 700, 460, makecol(255, 255, 255), -1, "Player 2 Score: %d", p2Score);
26
27
28
29 rectfill(buffer, tempXP1, tempYP1, (tempXP1+20), (tempYP1+100), makecol(0, 0, 0)); //clear
30
31 rect(buffer, xP1, yP1, (xP1+20), (yP1+100), makecol(255, 255, 255)); //player one paddle
32
33
34
35 rectfill(buffer, tempXP2, tempYP2, (tempXP2+20), (tempYP2+100), makecol(0, 0, 0)); //clear
36
37 rect(buffer, xP2, yP2, (xP2+20), (yP2+100), makecol(255, 255, 255)); //player two paddle
38
39
40
41 circlefill(buffer, tempXBall, tempYBall, 10, makecol(0, 0, 0));
42
43 circle(buffer, xBall, yBall, 10, makecol(255, 255, 255));
44
45
46
47 line(buffer, 0, 10, 840, 10, makecol(255, 255, 255));
48
49 line(buffer, 0, 470, 840, 470, makecol(255, 255, 255));
50
51 line(buffer, 420, 0, 420, 480, makecol(255, 255, 255));
52
53 textprintf_ex(buffer, font, 25, 25, makecol(255, 255, 255), -1, "fps: %d", Frames);
54
55 blit(buffer, screen, 0, 0, 0, 0, buffer->w, buffer->h);
56
57
58
59}
60
61void player1()
62
63{
64
65 clear_keybuf();
66
67
68
69 if(key[KEY_W] && (yP1-2)!=10)
70
71 yP1-=2;
72
73 if(key[KEY_S] && (yP1+102)!=470)
74
75 yP1+=2;
76
77 if(key[KEY_D] && (xP1+22)!=420)
78
79 xP1+=2;
80
81 if(key[KEY_A] && (xP1-2)!=0)
82
83 xP1-=2;
84
85
86
87}
88
89void player2()
90
91{
92
93 clear_keybuf();
94
95
96
97 if(key[KEY_UP] && (yP2-2)!=10)
98
99 yP2-=2;
100
101 if(key[KEY_DOWN] && (yP2+102)!=470)
102
103 yP2+=2;
104
105 if(key[KEY_RIGHT] && (xP2+20)!=840)
106
107 xP2+=2;
108
109 if(key[KEY_LEFT] && (xP2-2)!=420)
110
111 xP2-=2;
112
113}
114
115void ballmovement()
116
117{
118
119 switch(dir)
120
121 {
122
123 case 1:
124
125 if((yBall-10)==10)
126
127 dir=2;
128
129 else if((xBall-10)==(xP1+20))
130
131 for( int c=yP1; c<(yP1+100);c++)
132
133 if((yBall-10)==c)
134
135 dir=3;
136
137 yBall-=2, xBall-=2;
138
139 break;
140
141 case 2:
142
143 if((yBall+10)==470)
144
145 dir=1;
146
147 else if((xBall-10)==(xP1+20))
148
149 for( int c=yP1; c<(yP1+100);c++)
150
151 if((yBall-10)==c)
152
153 dir=4;
154
155 yBall+=2, xBall-=2;
156
157 break;
158
159 case 3:
160
161 if((yBall-10)==10)
162
163 dir=4;
164
165 else if((xBall+10)==xP2)
166
167 for( int c=yP2; c<(yP2+100);c++)
168
169 if((yBall+10)==c)
170
171 dir=1;
172
173 yBall-=2, xBall+=2;
174
175 break;
176
177 case 4:
178
179 if((yBall+10)==470)
180
181 dir=3;
182
183 else if((xBall+10)==xP2)
184
185 for( int c=yP2; c<(yP2+100);c++)
186
187 if((yBall+10)==c)
188
189 dir=2;
190
191 yBall+=2, xBall+=2;
192
193 break;
194
195 }
196
197}
</code> |
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