13 #include <xcb/xcb_aux.h>
14 #include <xcb/xcb_image.h>
15 #define XCB_ALL_PLANES ~0
17 #include "lissajoux.h"
31 xcb_shm_segment_info_t shminfo;
38 gettimeofday(&timev, NULL);
40 return (double)timev.tv_sec + (((double)timev.tv_usec) / 1000000);
44 draw_lissajoux (Data *datap)
47 double a1, a2, p1, p2;
53 i = xcb_image_shm_get (datap->conn, datap->draw,
54 datap->image, shminfo,
61 datap->image = xcb_image_get (datap->conn, datap->draw,
63 XCB_ALL_PLANES, datap->format);
71 p1 = 4.0*t_previous*pi*0.05;
75 for (i = 0 ; i < nbr ; i++)
77 x = tab_cos[(int)(a1*i + p1*nbr) % 3600];
78 y = tab_sin[(int)(a2*i + p2*nbr) % 3600];
79 xcb_image_put_pixel (datap->image,
80 (int)((double)(W_W-5)*(x+1)/2.0),
81 (int)((double)(W_H-5)*(y+1)/2.0), 65535);
87 for (i = 0 ; i < nbr ; i++)
89 x = tab_cos[(int)(a1*i + p1*nbr) % 3600];
90 y = tab_sin[(int)(a2*i + p2*nbr) % 3600];
91 xcb_image_put_pixel (datap->image,
92 (int)((double)(W_W-5)*(x+1)/2.0),
93 (int)((double)(W_H-5)*(y+1)/2.0), 0);
97 xcb_image_shm_put (datap->conn, datap->draw, datap->gc,
98 datap->image, shminfo,
99 0, 0, 0, 0, W_W, W_H, 0);
102 xcb_image_put (datap->conn, datap->draw, datap->gc, datap->image,
104 xcb_image_destroy (datap->image);
112 t = get_time () - time_start;
116 draw_lissajoux (datap);
120 printf("FRAME COUNT..: %i frames\n", loop_count);
121 printf("TIME.........: %3.3f seconds\n", t);
122 printf("AVERAGE FPS..: %3.3f fps\n", (double)loop_count / t);
123 xcb_disconnect (datap->conn);
128 /* Return 0 if shm is not available, 1 otherwise */
130 shm_test (Data *datap)
132 xcb_shm_query_version_reply_t *rep;
134 rep = xcb_shm_query_version_reply (datap->conn,
135 xcb_shm_query_version (datap->conn),
142 if (rep->shared_pixmaps &&
143 (rep->major_version > 1 || rep->minor_version > 0))
144 format = rep->pixmap_format;
147 datap->image = xcb_image_create_native (datap->conn, W_W, W_H,
148 format, datap->depth, NULL, ~0, NULL);
149 assert(datap->image);
151 shminfo.shmid = shmget (IPC_PRIVATE,
152 datap->image->stride*datap->image->height,
154 assert(shminfo.shmid != -1);
155 shminfo.shmaddr = shmat (shminfo.shmid, 0, 0);
156 assert(shminfo.shmaddr);
157 datap->image->data = shminfo.shmaddr;
159 shminfo.shmseg = xcb_generate_id (datap->conn);
160 xcb_shm_attach (datap->conn, shminfo.shmseg,
162 shmctl_status = shmctl(shminfo.shmid, IPC_RMID, 0);
163 assert(shmctl_status != -1);
169 printf ("Use of shm.\n");
174 printf ("Can't use shm. Use standard functions.\n");
175 shmdt (shminfo.shmaddr);
176 shmctl (shminfo.shmid, IPC_RMID, 0);
182 main (int argc, char *argv[])
185 xcb_screen_t *screen;
188 xcb_gcontext_t bgcolor;
192 xcb_rectangle_t rect_coord = { 0, 0, W_W, W_H};
193 xcb_generic_event_t *e;
203 printf ("Usage: lissajoux try_shm\n");
204 printf (" try_shm == 0: shm not used\n");
205 printf (" try_shm != 0: shm is used (if available)\n");
209 try_shm = atoi (argv[1]);
213 data.conn = xcb_connect (0, &screen_num);
214 screen = xcb_aux_get_screen(data.conn, screen_num);
215 data.depth = xcb_aux_get_depth (data.conn, screen);
219 data.gc = xcb_generate_id (data.conn);
220 mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES;
221 valgc[0] = screen->black_pixel;
222 valgc[1] = 0; /* no graphics exposures */
223 xcb_create_gc (data.conn, data.gc, win, mask, valgc);
225 bgcolor = xcb_generate_id (data.conn);
226 mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES;
227 valgc[0] = screen->white_pixel;
228 valgc[1] = 0; /* no graphics exposures */
229 xcb_create_gc (data.conn, bgcolor, win, mask, valgc);
231 data.draw = xcb_generate_id (data.conn);
232 mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK | XCB_CW_DONT_PROPAGATE;
233 valwin[0] = screen->white_pixel;
234 valwin[1] = XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_EXPOSURE;
235 valwin[2] = XCB_EVENT_MASK_BUTTON_PRESS;
236 xcb_create_window (data.conn, 0,
241 XCB_WINDOW_CLASS_INPUT_OUTPUT,
244 xcb_map_window (data.conn, data.draw);
246 rect = xcb_generate_id (data.conn);
247 xcb_create_pixmap (data.conn, data.depth,
250 xcb_poly_fill_rectangle(data.conn, rect, bgcolor, 1, &rect_coord);
252 data.format = XCB_IMAGE_FORMAT_Z_PIXMAP;
253 xcb_flush (data.conn);
258 for (i = 0; i < 3600; i++) {
259 tab_cos[i] = cos (2.0 * 3.1415926535897 * (double)i / 3600.0);
260 tab_sin[i] = sin (2.0 * 3.1415926535897 * (double)i / 3600.0);
263 time_start = get_time ();
267 e = xcb_poll_for_event(data.conn);
270 switch (e->response_type)
273 xcb_copy_area(data.conn, rect, data.draw, bgcolor,
274 0, 0, 0, 0, W_W, W_H);
280 xcb_flush (data.conn);