annotate test/testtimer.c @ 3197:434ce3242e1c

Alexei Tereschenko Why not to use hardware vertex processing instead of software one if it is available in D3D render driver? With hardware processing testsprite2 runs three times faster on all videocards which I could test.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 16 Jun 2009 14:34:15 +0000
parents c121d94672cb
children
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1
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2 /* Test program to check the resolution of the SDL timer on the current
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3 platform
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4 */
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5
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6 #include <stdlib.h>
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7 #include <stdio.h>
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8
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9 #include "SDL.h"
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10
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11 #define DEFAULT_RESOLUTION 1
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12
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13 static int ticks = 0;
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14
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15 static Uint32 SDLCALL
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16 ticktock(Uint32 interval)
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17 {
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18 ++ticks;
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19 return (interval);
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20 }
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21
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22 static Uint32 SDLCALL
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23 callback(Uint32 interval, void *param)
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24 {
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25 printf("Timer %d : param = %d\n", interval, (int) (uintptr_t) param);
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26 return interval;
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27 }
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28
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29 int
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30 main(int argc, char *argv[])
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31 {
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32 int desired;
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33 SDL_TimerID t1, t2, t3;
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34
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35 if (SDL_Init(SDL_INIT_TIMER) < 0) {
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36 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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37 return (1);
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38 }
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39
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40 /* Start the timer */
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41 desired = 0;
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42 if (argv[1]) {
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43 desired = atoi(argv[1]);
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44 }
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45 if (desired == 0) {
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46 desired = DEFAULT_RESOLUTION;
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47 }
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48 SDL_SetTimer(desired, ticktock);
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49
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50 /* Wait 10 seconds */
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51 printf("Waiting 10 seconds\n");
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52 SDL_Delay(10 * 1000);
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53
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54 /* Stop the timer */
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55 SDL_SetTimer(0, NULL);
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56
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57 /* Print the results */
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58 if (ticks) {
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59 fprintf(stderr,
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60 "Timer resolution: desired = %d ms, actual = %f ms\n",
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61 desired, (double) (10 * 1000) / ticks);
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62 }
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63
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64 /* Test multiple timers */
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65 printf("Testing multiple timers...\n");
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66 t1 = SDL_AddTimer(100, callback, (void *) 1);
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67 if (!t1)
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68 fprintf(stderr, "Could not create timer 1: %s\n", SDL_GetError());
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69 t2 = SDL_AddTimer(50, callback, (void *) 2);
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70 if (!t2)
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71 fprintf(stderr, "Could not create timer 2: %s\n", SDL_GetError());
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72 t3 = SDL_AddTimer(233, callback, (void *) 3);
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73 if (!t3)
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74 fprintf(stderr, "Could not create timer 3: %s\n", SDL_GetError());
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75
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76 /* Wait 10 seconds */
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77 printf("Waiting 10 seconds\n");
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78 SDL_Delay(10 * 1000);
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79
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80 printf("Removing timer 1 and waiting 5 more seconds\n");
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81 SDL_RemoveTimer(t1);
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82
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83 SDL_Delay(5 * 1000);
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84
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85 SDL_RemoveTimer(t2);
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86 SDL_RemoveTimer(t3);
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87
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88 SDL_Quit();
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89 return (0);
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90 }