+++ /dev/null
-/* fps, Copyright (c) 2001-2007 Jamie Zawinski <jwz@jwz.org>
- * Utility function to draw a frames-per-second display.
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. No representations are made about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include "xlockmoreI.h"
-
-#ifdef HAVE_COCOA
-# undef usleep /* conflicts with 10.5 headers... */
-# include <OpenGL/gl.h>
-# include <OpenGL/glu.h>
-# include <AGL/agl.h>
-#else /* !HAVE_COCOA -- real Xlib */
-# include <GL/gl.h>
-# include <GL/glu.h>
-# include <GL/glx.h>
-#endif /* !HAVE_COCOA */
-
-#undef DEBUG /* Defining this causes check_gl_error() to be called inside
- time-critical sections, which could slow things down (since
- it might result in a round-trip, and stall of the pipeline.)
- */
-
-extern void clear_gl_error (void);
-extern void check_gl_error (const char *type);
-
-extern GLfloat fps_1 (ModeInfo *mi);
-extern void fps_2 (ModeInfo *mi);
-extern void do_fps (ModeInfo *mi);
-extern void fps_free (ModeInfo *mi);
-
-struct fps_state {
- int x, y;
- int ascent, descent;
- GLuint font_dlist;
- Bool clear_p;
- char string[1024];
-
- int last_ifps;
- GLfloat last_fps;
- int frame_count;
- struct timeval prev, now;
-};
-
-
-static void
-fps_init (ModeInfo *mi)
-{
- struct fps_state *st = mi->fps_state;
-
- if (st) free (st);
- st = (struct fps_state *) calloc (1, sizeof(*st));
- mi->fps_state = st;
-
- st->clear_p = get_boolean_resource (mi->dpy, "fpsSolid", "FPSSolid");
-
-# ifndef HAVE_COCOA /* Xlib version */
- {
- const char *font;
- XFontStruct *f;
- Font id;
- int first, last;
-
- font = get_string_resource (mi->dpy, "fpsFont", "Font");
-
- if (!font) font = "-*-courier-bold-r-normal-*-180-*";
- f = XLoadQueryFont (mi->dpy, font);
- if (!f) f = XLoadQueryFont (mi->dpy, "fixed");
-
- id = f->fid;
- first = f->min_char_or_byte2;
- last = f->max_char_or_byte2;
-
- clear_gl_error ();
- st->font_dlist = glGenLists ((GLuint) last+1);
- check_gl_error ("glGenLists");
-
- st->ascent = f->ascent;
- st->descent = f->descent;
-
- glXUseXFont (id, first, last-first+1, st->font_dlist + first);
- check_gl_error ("glXUseXFont");
- }
-
-# else /* HAVE_COCOA */
-
- {
- AGLContext ctx = aglGetCurrentContext();
- GLint id = 0; /* 0 = system font; 1 = application font */
- Style face = 1; /* 0 = plain; 1=B; 2=I; 3=BI; 4=U; 5=UB; etc. */
- GLint size = 24;
- GLint first = 32;
- GLint last = 255;
-
- st->ascent = size * 0.9;
- st->descent = size - st->ascent;
-
- clear_gl_error ();
- st->font_dlist = glGenLists ((GLuint) last+1);
- check_gl_error ("glGenLists");
-
- if (! aglUseFont (ctx, id, face, size,
- first, last-first+1, st->font_dlist + first)) {
- check_gl_error ("aglUseFont");
- abort();
- }
- }
-
-# endif /* HAVE_COCOA */
-
- st->x = 10;
- st->y = 10;
- if (get_boolean_resource (mi->dpy, "fpsTop", "FPSTop"))
- st->y = - (st->ascent + 10);
-}
-
-void
-fps_free (ModeInfo *mi)
-{
- if (mi->fps_state)
- free (mi->fps_state);
- mi->fps_state = 0;
-}
-
-static void
-fps_print_string (ModeInfo *mi, GLfloat x, GLfloat y, const char *string)
-{
- struct fps_state *st = mi->fps_state;
- const char *L2 = strchr (string, '\n');
-
- if (y < 0)
- {
- y = mi->xgwa.height + y;
- if (L2)
- y -= (st->ascent + st->descent);
- }
-
-# ifdef DEBUG
- clear_gl_error ();
-# endif
-
- /* Sadly, this causes a stall of the graphics pipeline (as would the
- equivalent calls to glGet*.) But there's no way around this, short
- of having each caller set up the specific display matrix we need
- here, which would kind of defeat the purpose of centralizing this
- code in one file.
- */
- glPushAttrib (GL_TRANSFORM_BIT | /* for matrix contents */
- GL_ENABLE_BIT | /* for various glDisable calls */
- GL_CURRENT_BIT | /* for glColor3f() */
- GL_LIST_BIT); /* for glListBase() */
- {
-# ifdef DEBUG
- check_gl_error ("glPushAttrib");
-# endif
-
- /* disable lighting and texturing when drawing bitmaps!
- (glPopAttrib() restores these.)
- */
- glDisable (GL_TEXTURE_2D);
- glDisable (GL_LIGHTING);
- glDisable (GL_BLEND);
- glDisable (GL_DEPTH_TEST);
- glDisable (GL_CULL_FACE);
-
- /* glPopAttrib() does not restore matrix changes, so we must
- push/pop the matrix stacks to be non-intrusive there.
- */
- glMatrixMode(GL_PROJECTION);
- glPushMatrix();
- {
-# ifdef DEBUG
- check_gl_error ("glPushMatrix");
-# endif
- glLoadIdentity();
-
- /* Each matrix mode has its own stack, so we need to push/pop
- them separately. */
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
- {
-# ifdef DEBUG
- check_gl_error ("glPushMatrix");
-# endif
- glLoadIdentity();
-
- gluOrtho2D(0, mi->xgwa.width, 0, mi->xgwa.height);
-# ifdef DEBUG
- check_gl_error ("gluOrtho2D");
-# endif
-
- /* clear the background */
- if (st->clear_p)
- {
- int lines = L2 ? 2 : 1;
- glColor3f (0, 0, 0);
- glRecti (x / 2, y - st->descent,
- mi->xgwa.width - x,
- y + lines * (st->ascent + st->descent));
- }
-
- /* draw the text */
- glColor3f (1, 1, 1);
- glRasterPos2f (x, y);
- glListBase (st->font_dlist);
-
- if (L2)
- {
- L2++;
- glCallLists (strlen(L2), GL_UNSIGNED_BYTE, L2);
- glRasterPos2f (x, y + (st->ascent + st->descent));
- glCallLists (L2 - string - 1, GL_UNSIGNED_BYTE, string);
- }
- else
- {
- glCallLists (strlen(string), GL_UNSIGNED_BYTE, string);
- }
-
-# ifdef DEBUG
- check_gl_error ("fps_print_string");
-# endif
- }
- glPopMatrix();
- }
- glMatrixMode(GL_PROJECTION);
- glPopMatrix();
-
- }
- /* clean up after our state changes */
- glPopAttrib();
-# ifdef DEBUG
- check_gl_error ("glPopAttrib");
-# endif
-}
-
-
-GLfloat
-fps_1 (ModeInfo *mi)
-{
- struct fps_state *st = mi->fps_state;
- if (!st)
- {
- fps_init (mi);
- st = mi->fps_state;
- strcpy (st->string, "FPS: (accumulating...)");
- }
-
- /* Every N frames (where N is approximately one second's worth of frames)
- check the wall clock. We do this because checking the wall clock is
- a slow operation.
- */
- if (st->frame_count++ >= st->last_ifps)
- {
-# ifdef GETTIMEOFDAY_TWO_ARGS
- struct timezone tzp;
- gettimeofday(&st->now, &tzp);
-# else
- gettimeofday(&st->now);
-# endif
-
- if (st->prev.tv_sec == 0)
- st->prev = st->now;
- }
-
- /* If we've probed the wall-clock time, regenerate the string.
- */
- if (st->now.tv_sec != st->prev.tv_sec)
- {
- double uprev = st->prev.tv_sec + ((double) st->prev.tv_usec * 0.000001);
- double unow = st->now.tv_sec + ((double) st->now.tv_usec * 0.000001);
- double fps = st->frame_count / (unow - uprev);
-
- st->prev = st->now;
- st->frame_count = 0;
- st->last_ifps = fps;
- st->last_fps = fps;
-
- sprintf (st->string, "FPS: %.02f", fps);
-
-#ifndef HAVE_COCOA
- /* since there's no "-delay 0" in the Cocoa version,
- don't bother mentioning the inter-frame delay. */
- if (mi->pause != 0)
- {
- char buf[40];
- sprintf(buf, "%f", mi->pause / 1000000.0); /* FTSO C */
- while(*buf && buf[strlen(buf)-1] == '0')
- buf[strlen(buf)-1] = 0;
- if (buf[strlen(buf)-1] == '.')
- buf[strlen(buf)-1] = 0;
- sprintf(st->string + strlen(st->string),
- " (including %s sec/frame delay)",
- buf);
- }
-#endif /* HAVE_COCOA */
-
- if (mi->polygon_count > 0)
- {
- unsigned long p = mi->polygon_count;
- const char *s = "";
-# if 0
- if (p >= (1024 * 1024)) p >>= 20, s = "M";
- else if (p >= 2048) p >>= 10, s = "K";
-# endif
-
- strcat (st->string, "\nPolys: ");
- if (p >= 1000000)
- sprintf (st->string + strlen(st->string), "%lu,%03lu,%03lu%s",
- (p / 1000000), ((p / 1000) % 1000), (p % 1000), s);
- else if (p >= 1000)
- sprintf (st->string + strlen(st->string), "%lu,%03lu%s",
- (p / 1000), (p % 1000), s);
- else
- sprintf (st->string + strlen(st->string), "%lu%s", p, s);
- }
- }
-
- return st->last_fps;
-}
-
-void
-fps_2 (ModeInfo *mi)
-{
- struct fps_state *st = mi->fps_state;
- fps_print_string (mi, st->x, st->y, st->string);
-}
-
-
-void
-do_fps (ModeInfo *mi)
-{
- fps_1 (mi); /* Lazily compute current FPS value, about once a second. */
- fps_2 (mi); /* Print the string every frame (else nothing shows up.) */
-}
projects / xscreensaver / blobdiff