diff options
Diffstat (limited to 'progs/demos')
| -rw-r--r-- | progs/demos/osdemo.c | 45 |
1 files changed, 37 insertions, 8 deletions
diff --git a/progs/demos/osdemo.c b/progs/demos/osdemo.c index 73fb367fec0..1827e867d64 100644 --- a/progs/demos/osdemo.c +++ b/progs/demos/osdemo.c @@ -1,4 +1,4 @@ -/* $Id: osdemo.c,v 1.7 2001/09/24 15:29:27 kschultz Exp $ */ +/* $Id: osdemo.c,v 1.8 2002/04/05 17:40:20 kschultz Exp $ */ /* * Demo of off-screen Mesa rendering @@ -14,6 +14,11 @@ * * PPM output provided by Joerg Schmalzl. * ASCII PPM output added by Brian Paul. + * + * Usage: osdemo [-perf] [filename] + * + * -perf: Redraws the image 1000 times, displaying the FPS every 5 secs. + * filename: file to store the TGA or PPM output */ @@ -29,7 +34,9 @@ #define WIDTH 400 #define HEIGHT 400 - +static GLint T0 = 0; +static GLint Frames = 0; +static int perf = 0; static void render_image( void ) { @@ -76,7 +83,7 @@ static void render_image( void ) glPopMatrix(); #ifdef GL_HP_occlusion_test - { + if (perf == 0) { GLboolean bRet; glDepthMask(GL_FALSE); glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE); @@ -105,7 +112,7 @@ static void render_image( void ) glPopMatrix(); #ifdef GL_HP_occlusion_test - { + if (perf == 0){ GLboolean bRet; glDepthMask(GL_FALSE); @@ -130,6 +137,18 @@ static void render_image( void ) #endif glPopMatrix(); + + Frames++; + if (perf) { + GLint t = glutGet(GLUT_ELAPSED_TIME); + if (t - T0 >= 5000) { + GLfloat seconds = (t - T0) / 1000.0; + GLfloat fps = Frames / seconds; + printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps); + T0 = t; + Frames = 0; + } + } } @@ -224,6 +243,8 @@ write_ppm(const char *filename, const GLubyte *buffer, int width, int height) int main( int argc, char *argv[] ) { void *buffer; + int i; + char *filename = NULL; /* Create an RGBA-mode context */ #if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305 @@ -237,6 +258,11 @@ int main( int argc, char *argv[] ) return 0; } + for ( i=1; i<argc; i++ ) { + if (argv[i][0] != '-') filename = argv[i]; + if (strcmp(argv[i], "-perf")==0) perf = 1; + } + /* Allocate the image buffer */ buffer = malloc( WIDTH * HEIGHT * 4 * sizeof(GLubyte) ); if (!buffer) { @@ -256,16 +282,19 @@ int main( int argc, char *argv[] ) glGetIntegerv(GL_DEPTH_BITS, &z); glGetIntegerv(GL_STENCIL_BITS, &s); glGetIntegerv(GL_ACCUM_RED_BITS, &a); - printf("%d %d %d\n", z, s, a); + printf("Depth=%d Stencil=%d Accum=%d\n", z, s, a); } render_image(); + if (perf) + for(i=0; i< 1000; i++) + render_image(); - if (argc>1) { + if (filename != NULL) { #ifdef SAVE_TARGA - write_targa(argv[1], buffer, WIDTH, HEIGHT); + write_targa(filename, buffer, WIDTH, HEIGHT); #else - write_ppm(argv[1], buffer, WIDTH, HEIGHT); + write_ppm(filename, buffer, WIDTH, HEIGHT); #endif } else { |