Mercurial > sdl-ios-xcode
view test/testtimer.c @ 5133:ec13e48ee0d9
Fixed bug #1112 (retina display support)
Vittorio Giovara 2011-02-01 02:21:50 PST
with the attached patch, the opengles context will always use the maximum
screensize available; this is particularly useful for supporting retina display
on latest iphone.
please note: Apple documentation warns that using the "upscaled" gl context
actually uses more memory and bandwitdh, so it might be worth to let the user
decide whether to disable it or not, either with a flag or a sdl function...
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 01 Feb 2011 08:54:34 -0800 |
parents | c121d94672cb |
children |
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/* Test program to check the resolution of the SDL timer on the current platform */ #include <stdlib.h> #include <stdio.h> #include "SDL.h" #define DEFAULT_RESOLUTION 1 static int ticks = 0; static Uint32 SDLCALL ticktock(Uint32 interval) { ++ticks; return (interval); } static Uint32 SDLCALL callback(Uint32 interval, void *param) { printf("Timer %d : param = %d\n", interval, (int) (uintptr_t) param); return interval; } int main(int argc, char *argv[]) { int desired; SDL_TimerID t1, t2, t3; if (SDL_Init(SDL_INIT_TIMER) < 0) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return (1); } /* Start the timer */ desired = 0; if (argv[1]) { desired = atoi(argv[1]); } if (desired == 0) { desired = DEFAULT_RESOLUTION; } SDL_SetTimer(desired, ticktock); /* Wait 10 seconds */ printf("Waiting 10 seconds\n"); SDL_Delay(10 * 1000); /* Stop the timer */ SDL_SetTimer(0, NULL); /* Print the results */ if (ticks) { fprintf(stderr, "Timer resolution: desired = %d ms, actual = %f ms\n", desired, (double) (10 * 1000) / ticks); } /* Test multiple timers */ printf("Testing multiple timers...\n"); t1 = SDL_AddTimer(100, callback, (void *) 1); if (!t1) fprintf(stderr, "Could not create timer 1: %s\n", SDL_GetError()); t2 = SDL_AddTimer(50, callback, (void *) 2); if (!t2) fprintf(stderr, "Could not create timer 2: %s\n", SDL_GetError()); t3 = SDL_AddTimer(233, callback, (void *) 3); if (!t3) fprintf(stderr, "Could not create timer 3: %s\n", SDL_GetError()); /* Wait 10 seconds */ printf("Waiting 10 seconds\n"); SDL_Delay(10 * 1000); printf("Removing timer 1 and waiting 5 more seconds\n"); SDL_RemoveTimer(t1); SDL_Delay(5 * 1000); SDL_RemoveTimer(t2); SDL_RemoveTimer(t3); SDL_Quit(); return (0); }