karma/flying-balls
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added stats sampling count option (stats=C).

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This commit is contained in:
Antonio Carzaniga 2019-08-21 12:14:25 +02:00
parent 90f9766a87
commit 30f48a0114
1 changed files with 8 additions and 10 deletions
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18
balls.c
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@ -497,28 +497,28 @@ void print_usage (const char * progname) {
"\tdelta=<frame-delta-time>\n" "\tdelta=<frame-delta-time>\n"
"\tface=<filename>\n" "\tface=<filename>\n"
"\tclear=<clear-alpha>\n" "\tclear=<clear-alpha>\n"
"\t-v :: enables rendering timing statitstics\n" "\tstats=<sample-count> :: rendering timing statitstics (0=disabled, default)\n"
"\tcollisions=<C> :: n=no collisions, s=simple, i=index\n", "\tcollisions=<C> :: n=no collisions, s=simple, i=index\n",
progname); progname);
} }
int rendering_statistics = 0; unsigned int stats_sampling = 0;
gboolean timeout (gpointer user_data) { gboolean timeout (gpointer user_data) {
guint64 start = 0, elapsed_usec; guint64 start = 0, elapsed_usec;
if (rendering_statistics) if (stats_sampling > 0)
start = g_get_monotonic_time (); start = g_get_monotonic_time ();
update_state(); update_state();
draw_balls_onto_window(); draw_balls_onto_window();
if (rendering_statistics) { if (stats_sampling > 0) {
elapsed_usec = g_get_monotonic_time () - start; elapsed_usec = g_get_monotonic_time () - start;
static guint64 elapsed_usec_total = 0; static guint64 elapsed_usec_total = 0;
static unsigned int samples = 0; static unsigned int samples = 0;
if (samples == 30) { if (samples == stats_sampling) {
printf("\rtime for one frame: %lu usec (avg over %u samples) ", elapsed_usec_total / samples, samples); printf("\rframe rendering: time = %lu usec, max freq = %.2f (avg over %u samples) ", elapsed_usec_total / samples, (1000000.0 * samples) / elapsed_usec_total, samples);
fflush(stdout); fflush(stdout);
samples = 0; samples = 0;
elapsed_usec_total = 0; elapsed_usec_total = 0;
@ -554,10 +554,8 @@ int main (int argc, const char *argv[]) {
} }
if (sscanf(argv[i], "clear=%lf", &clear_alpha) == 1) if (sscanf(argv[i], "clear=%lf", &clear_alpha) == 1)
continue; continue;
if (strcmp(argv[i], "-v") == 0) { if (sscanf(argv[i], "stats=%u", &stats_sampling) == 1)
rendering_statistics = 1;
continue; continue;
}
char collisions; char collisions;
if (sscanf(argv[i], "collisions=%c", &collisions) == 1) { if (sscanf(argv[i], "collisions=%c", &collisions) == 1) {
switch (collisions) { switch (collisions) {
@ -609,7 +607,7 @@ int main (int argc, const char *argv[]) {
gtk_main(); gtk_main();
if (rendering_statistics) if (stats_sampling > 0)
printf("\n"); printf("\n");
destroy_graphics(); destroy_graphics();