diff options
| author | Brian Paul <[email protected]> | 2000-09-12 18:44:45 +0000 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2000-09-12 18:44:45 +0000 |
| commit | d49b34a233628a476b87dd2e2609405d76ac8866 (patch) | |
| tree | 6d3d34783a333150862160cee8ccfd29629e14da /progs/demos/ipers.c | |
| parent | b8cc1508362ccad0182d838faa3c4079632cd7fb (diff) | |
better FPS calculation
Diffstat (limited to 'progs/demos/ipers.c')
| -rw-r--r-- | progs/demos/ipers.c | 37 |
1 files changed, 16 insertions, 21 deletions
diff --git a/progs/demos/ipers.c b/progs/demos/ipers.c index 8993d3fc222..aa15d67b534 100644 --- a/progs/demos/ipers.c +++ b/progs/demos/ipers.c @@ -28,6 +28,9 @@ static int fullscreen = 1; static int WIDTH = 640; static int HEIGHT = 480; +static GLint T0; +static GLint Frames; + #define MAX_LOD 9 #define TEX_SKY_WIDTH 256 @@ -195,21 +198,6 @@ inittextures(void) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); } -static float -gettime(void) -{ - static clock_t told = 0; - clock_t tnew, ris; - - tnew = clock(); - - ris = tnew - told; - - told = tnew; - - return (ris / (float) CLOCKS_PER_SEC); -} - static void calcposobs(void) { @@ -544,11 +532,10 @@ drawipers(int depth, int from) static void draw(void) { - static int count = 0; - static char frbuf[80]; + static char frbuf[80] = ""; static GLfloat alpha = 0.0f; static GLfloat beta = 0.0f; - float fr; + static float fr = 0.0; dojoy(); @@ -610,10 +597,9 @@ draw(void) /* Help Screen */ - fr = gettime(); sprintf(frbuf, "Frame rate: %0.2f LOD: %d Tot. poly.: %d Poly/sec: %.1f", - 1.0 / fr, LODbias, totpoly, totpoly / fr); + fr, LODbias, totpoly, totpoly * fr); glDisable(GL_TEXTURE_2D); glDisable(GL_FOG); @@ -644,7 +630,16 @@ draw(void) glutSwapBuffers(); - count++; + Frames++; + { + GLint t = glutGet(GLUT_ELAPSED_TIME); + if (t - T0 >= 2000) { + GLfloat seconds = (t - T0) / 1000.0; + fr = Frames / seconds; + T0 = t; + Frames = 0; + } + } } int |