1 /* -*- mode: C; c-basic-offset: 2; indent-tabs-mode: nil; -*- */
10 #define DIAMETER (2*RADIUS)
13 #define WINDOW_SIZE_JITTER 200
16 static GtkWidget *window;
17 static int window_width = WIDTH, window_height = HEIGHT;
21 static int max_stats = -1;
22 static double statistics_time = 5.;
23 static double load_factor = 1.0;
24 static double cb_no_resize = FALSE;
25 static gboolean machine_readable = FALSE;
27 static cairo_surface_t *source_surface;
30 ensure_resources(cairo_surface_t *target)
35 if (source_surface != NULL)
38 source_surface = cairo_surface_create_similar (target, CAIRO_CONTENT_COLOR_ALPHA,
39 16 * DIAMETER, 16 * DIAMETER);
40 cr = cairo_create(source_surface);
43 cairo_set_source_rgba(cr, 0, 0, 0, 0);
44 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
48 cairo_set_line_width(cr, 1.0);
50 for (j = 0; j < 16; j++)
51 for (i = 0; i < 16; i++)
53 cairo_set_source_rgba(cr,
54 ((i * 41) % 16) / 15.,
55 ((i * 31) % 16) / 15.,
56 ((i * 23) % 16) / 15.,
59 i * DIAMETER + RADIUS, j * DIAMETER + RADIUS,
60 RADIUS - 0.5, 0, 2 * M_PI);
61 cairo_fill_preserve(cr);
62 cairo_set_source_rgba(cr,
63 ((i * 41) % 16) / 15.,
64 ((i * 31) % 16) / 15.,
65 ((i * 23) % 16) / 15.,
72 on_window_draw (GtkWidget *widget,
76 GRand *rand = g_rand_new_with_seed(0);
80 width = gtk_widget_get_allocated_width (widget);
81 height = gtk_widget_get_allocated_height (widget);
83 ensure_resources (cairo_get_target (cr));
85 cairo_set_source_rgb(cr, 1, 1, 1);
88 cairo_set_source_rgb(cr, 0, 0, 0);
89 cairo_set_line_width(cr, 1.0);
90 cairo_rectangle (cr, 0.5, 0.5, width - 1, height - 1);
93 for(i = 0; i < load_factor * 150; i++)
95 int source = g_rand_int_range(rand, 0, 255);
96 double phi = g_rand_double_range(rand, 0, 2 * M_PI) + angle;
97 double r = g_rand_double_range(rand, 0, width / 2 - RADIUS);
100 int source_x = (source % 16) * DIAMETER;
101 int source_y = (source / 16) * DIAMETER;
103 x = round(width / 2 + r * cos(phi) - RADIUS);
104 y = round(height / 2 - r * sin(phi) - RADIUS);
106 cairo_set_source_surface(cr, source_surface,
107 x - source_x, y - source_y);
108 cairo_rectangle(cr, x, y, DIAMETER, DIAMETER);
116 print_double (const char *description,
119 if (machine_readable)
120 g_print ("%g\t", value);
122 g_print ("%s: %g\n", description, value);
126 print_variable (const char *description,
129 if (variable->weight != 0)
131 if (machine_readable)
133 variable_mean (variable),
134 variable_standard_deviation (variable));
136 g_print ("%s: %g +/- %g\n", description,
137 variable_mean (variable),
138 variable_standard_deviation (variable));
142 if (machine_readable)
145 g_print ("%s: <n/a>\n", description);
150 handle_frame_stats (GdkFrameHistory *frame_history)
152 static int num_stats = 0;
153 static double last_print_time = 0;
154 static int frames_since_last_print = 0;
155 static gint64 frame_counter;
156 static gint64 last_handled_frame = -1;
158 static Variable latency = VARIABLE_INIT;
162 current_time = g_get_monotonic_time ();
163 if (current_time >= last_print_time + 1000000 * statistics_time)
165 if (frames_since_last_print)
167 if (num_stats == 0 && machine_readable)
169 g_print ("# load_factor frame_rate latency\n");
173 if (machine_readable)
174 g_print ("%g ", load_factor);
175 print_double ("Frame rate ",
176 frames_since_last_print / ((current_time - last_print_time) / 1000000.));
178 print_variable ("Latency", &latency);
183 last_print_time = current_time;
184 frames_since_last_print = 0;
185 variable_reset (&latency);
187 if (num_stats == max_stats)
191 frames_since_last_print++;
193 for (frame_counter = last_handled_frame;
194 frame_counter < gdk_frame_history_get_frame_counter (frame_history);
197 GdkFrameTimings *timings = gdk_frame_history_get_timings (frame_history, frame_counter);
198 GdkFrameTimings *previous_timings = gdk_frame_history_get_timings (frame_history, frame_counter - 1);
200 if (!timings || gdk_frame_timings_get_complete (timings))
201 last_handled_frame = frame_counter;
203 if (timings && gdk_frame_timings_get_complete (timings) && previous_timings &&
204 gdk_frame_timings_get_presentation_time (timings) != 0 &&
205 gdk_frame_timings_get_presentation_time (previous_timings) != 0)
207 double display_time = (gdk_frame_timings_get_presentation_time (timings) - gdk_frame_timings_get_presentation_time (previous_timings)) / 1000.;
208 double frame_latency = (gdk_frame_timings_get_presentation_time (previous_timings) - gdk_frame_timings_get_frame_time (previous_timings)) / 1000. + display_time / 2;
210 variable_add_weighted (&latency, frame_latency, display_time);
216 on_frame (GtkTimeline *timeline,
219 GdkFrameClock *frame_clock = gtk_widget_get_frame_clock (window);
224 GdkFrameHistory *history = gdk_frame_clock_get_history (frame_clock);
225 handle_frame_stats (history);
228 angle = 2 * M_PI * progress;
229 jitter = WINDOW_SIZE_JITTER * sin(angle);
233 window_width = WIDTH + jitter;
234 window_height = HEIGHT + jitter;
237 gtk_window_resize (GTK_WINDOW (window),
238 window_width, window_height);
240 gtk_widget_queue_draw (window);
244 on_map_event (GtkWidget *widget,
246 GtkTimeline *timeline)
248 gtk_timeline_start (timeline);
253 static GOptionEntry options[] = {
254 { "factor", 'f', 0, G_OPTION_ARG_DOUBLE, &load_factor, "Load factor", "FACTOR" },
255 { "max-statistics", 'm', 0, G_OPTION_ARG_INT, &max_stats, "Maximum statistics printed", NULL },
256 { "machine-readable", 0, 0, G_OPTION_ARG_NONE, &machine_readable, "Print statistics in columns", NULL },
257 { "no-resize", 'n', 0, G_OPTION_ARG_NONE, &cb_no_resize, "No Resize", NULL },
258 { "statistics-time", 's', 0, G_OPTION_ARG_DOUBLE, &statistics_time, "Statistics accumulation time", "TIME" },
263 main(int argc, char **argv)
265 GError *error = NULL;
267 GdkRectangle monitor_bounds;
268 GtkTimeline *timeline;
270 if (!gtk_init_with_args (&argc, &argv, "",
271 options, NULL, &error))
273 g_printerr ("Option parsing failed: %s\n", error->message);
277 g_print ("%sLoad factor: %g\n",
278 machine_readable ? "# " : "",
280 g_print ("%sResizing?: %s\n",
281 machine_readable ? "# " : "",
282 cb_no_resize ? "no" : "yes");
284 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
285 gtk_window_set_keep_above (GTK_WINDOW (window), TRUE);
286 gtk_window_set_gravity (GTK_WINDOW (window), GDK_GRAVITY_CENTER);
287 gtk_widget_set_app_paintable (window, TRUE);
289 g_signal_connect (window, "draw",
290 G_CALLBACK (on_window_draw), NULL);
291 g_signal_connect (window, "destroy",
292 G_CALLBACK (gtk_main_quit), NULL);
294 timeline = gtk_timeline_new (window, CYCLE_TIME * 1000);
295 gtk_timeline_set_loop (timeline, TRUE);
296 gtk_timeline_set_progress_type (timeline, GTK_TIMELINE_PROGRESS_LINEAR);
298 g_signal_connect (timeline, "frame",
299 G_CALLBACK (on_frame), NULL);
300 g_signal_connect (window, "map-event",
301 G_CALLBACK (on_map_event), timeline);
302 on_frame (timeline, 0.);
304 screen = gtk_widget_get_screen (window);
305 gdk_screen_get_monitor_geometry (screen,
306 gdk_screen_get_primary_monitor (screen),
309 gtk_window_move (GTK_WINDOW (window),
310 monitor_bounds.x + (monitor_bounds.width - window_width) / 2,
311 monitor_bounds.y + (monitor_bounds.height - window_height) / 2);
313 gtk_widget_show (window);