Mercurial > 3de
changeset 8:640a1d1a730d
Timer/FPS counter
| author | jsipek@huey.fsl.cs.sunysb.edu |
|---|---|
| date | Thu, 24 Nov 2005 02:18:06 -0400 |
| parents | e681fac7212c |
| children | d325e84a13dd |
| files | Makefile render.c run.sh |
| diffstat | 3 files changed, 35 insertions(+), 8 deletions(-) [+] |
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--- a/Makefile Thu Nov 24 02:03:12 2005 -0400 +++ b/Makefile Thu Nov 24 02:18:06 2005 -0400 @@ -1,7 +1,7 @@ all: render transform render: render.c - gcc render.c -o render -I/usr/X11R6/include/ -L/usr/X11R6/lib -lX11 -lXi -lXmu -lglut -lGL -lGLU -g -Wall + gcc render.c -o render -I/usr/X11R6/include/ -L/usr/X11R6/lib -lX11 -lXi -lXmu -lglut -lGL -lGLU -g -Wall -lrt transform: transform.c gcc -o transform transform.c -Wall -g
--- a/render.c Thu Nov 24 02:03:12 2005 -0400 +++ b/render.c Thu Nov 24 02:18:06 2005 -0400 @@ -8,17 +8,24 @@ #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> +#include <time.h> // OpenGL #include "GL/glut.h" -#define BUF_SIZE 1024 -#define TIMER_PERIOD 10 +#define BUF_SIZE 1024 +#define TIMER_PERIOD 10 + +#define PIPE_IN "/tmp/3de.in" +#define PIPE_OUT "/tmp/3de.out" int infd; int outfd; char *buf, *ptr; +int frames; +struct timespec start; + void display(void); int valid_digit_char(char c) @@ -115,6 +122,8 @@ } ptr = buf; + + frames++; } void init() @@ -140,10 +149,25 @@ fprintf(stderr, "Error encountered in %s:%d: %s (%d)\n", f, l, strerror(errno), errno); } +void goodbye() +{ + struct timespec end; + double delta; + + clock_gettime(CLOCK_REALTIME, &end); + + delta = ((double) end.tv_sec + 1000000000.0/(double)end.tv_nsec) + - ((double) start.tv_sec + 1000000000.0/(double)start.tv_nsec); + + printf("Displayed %d frames in %.4lf seconds = %.4lf fps\n", frames, delta, frames/delta); + + close(infd); + close(outfd); +} + int main(int argc, char** argv) { -#define PIPE_IN "/tmp/3de.in" -#define PIPE_OUT "/tmp/3de.out" + frames = 0; unlink(PIPE_IN); unlink(PIPE_OUT); @@ -164,6 +188,8 @@ if ((outfd = open(PIPE_OUT, O_RDWR | O_NONBLOCK | O_NDELAY)) == -1) die(); + atexit(goodbye); + glutInit(&argc,argv); glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB); glutInitWindowSize(800,600); @@ -172,11 +198,12 @@ glutDisplayFunc(display); glutKeyboardFunc(key); init(); + + clock_gettime(CLOCK_REALTIME, &start); + glutTimerFunc(TIMER_PERIOD, timer2, 0); glutMainLoop(); - close(infd); - close(outfd); return 0; }