diff options
Diffstat (limited to 'progs/xdemos/glsync.c')
| -rw-r--r-- | progs/xdemos/glsync.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/progs/xdemos/glsync.c b/progs/xdemos/glsync.c index da87306cf2a..e813c8770d5 100644 --- a/progs/xdemos/glsync.c +++ b/progs/xdemos/glsync.c @@ -59,6 +59,7 @@ void (*video_sync_get)(); void (*video_sync)(); +void (*swap_interval)(); static int GLXExtensionSupported(Display *dpy, const char *extension) { @@ -84,7 +85,7 @@ static int GLXExtensionSupported(Display *dpy, const char *extension) extern char *optarg; extern int optind, opterr, optopt; -static char optstr[] = "w:h:s:v"; +static char optstr[] = "w:h:s:vi:"; enum sync_type { none = 0, @@ -100,6 +101,7 @@ static void usage(char *name) printf("\t\tn: none\n"); printf("\t\ts: SGI video sync extension\n"); printf("\t\tb: buffer swap\n"); + printf("\t-i<swap interval>\n"); printf("\t-v: verbose (print count)\n"); exit(-1); } @@ -117,7 +119,7 @@ int main(int argc, char *argv[]) Atom wmDelete; enum sync_type waitforsync = none; int width = 500, height = 500, verbose = 0, - countonly = 0; + countonly = 0, interval = 1; int c, i = 1; opterr = 0; @@ -148,6 +150,9 @@ int main(int argc, char *argv[]) case 'v': verbose = 1; break; + case 'i': + interval = atoi(optarg); + break; default: usage(argv[0]); break; @@ -227,11 +232,15 @@ int main(int argc, char *argv[]) video_sync_get = glXGetProcAddress((unsigned char *)"glXGetVideoSyncSGI"); video_sync = glXGetProcAddress((unsigned char *)"glXWaitVideoSyncSGI"); - if (!video_sync_get || !video_sync) { + swap_interval = glXGetProcAddress((unsigned char *)"glXSwapIntervalSGI"); + + if (!video_sync_get || !video_sync || !swap_interval) { fprintf(stderr, "failed to get sync functions\n"); return -1; } + swap_interval(interval); + fprintf(stderr, "set swap interval to %d\n", interval); video_sync_get(&count); count++; while (i++) { @@ -256,6 +265,11 @@ int main(int argc, char *argv[]) continue; } + if (verbose) { + video_sync_get(&count); + fprintf(stderr, "current count: %d\n", count); + } + /* Alternate colors to make tearing obvious */ if (i & 1) glClearColor(1.0f, 1.0f, 1.0f, 1.0f); |