12 #include <X11/XCB/xcb.h>
13 #include <X11/XCB/shm.h>
14 #include <X11/XCB/xcb_aux.h>
15 #include <X11/XCB/xcb_image.h>
17 #include "lissajoux.h"
31 XCBShmSegmentInfo 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 = XCBImageSHMGet (datap->conn, datap->draw,
54 datap->image, shminfo,
61 datap->image = XCBImageGet (datap->conn, datap->draw,
63 AllPlanes, 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 XCBImagePutPixel (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 XCBImagePutPixel (datap->image,
92 (int)((double)(W_W-5)*(x+1)/2.0),
93 (int)((double)(W_H-5)*(y+1)/2.0), 0);
97 XCBImageSHMPut (datap->conn, datap->draw, datap->gc,
98 datap->image, shminfo,
99 0, 0, 0, 0, W_W, W_H, 0);
102 XCBImagePut (datap->conn, datap->draw, datap->gc, datap->image,
103 0, 0, 0, 0, W_W, W_H);
104 XCBImageDestroy (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 /* if datap->image is not NULL, this means that */
124 /* we are using the SHM mode */
126 XCBImageSHMDestroy (datap->image);
127 XCBDisconnect (datap->conn);
132 /* Return 0 if shm is not available, 1 otherwise */
134 shm_test (Data *datap)
136 XCBShmQueryVersionRep *rep;
138 rep = XCBShmQueryVersionReply (datap->conn,
139 XCBShmQueryVersion (datap->conn),
146 if (rep->shared_pixmaps &&
147 (rep->major_version > 1 || rep->minor_version > 0))
148 format = rep->pixmap_format;
151 datap->image = XCBImageSHMCreate (datap->conn, datap->depth,
152 format, NULL, W_W, W_H);
153 assert(datap->image);
155 shminfo.shmid = shmget (IPC_PRIVATE,
156 datap->image->bytes_per_line*datap->image->height,
158 assert(shminfo.shmid != -1);
159 shminfo.shmaddr = shmat (shminfo.shmid, 0, 0);
160 assert(shminfo.shmaddr);
161 datap->image->data = shminfo.shmaddr;
163 shminfo.shmseg = XCBShmSEGNew (datap->conn);
164 XCBShmAttach (datap->conn, shminfo.shmseg,
166 shmctl_status = shmctl(shminfo.shmid, IPC_RMID, 0);
167 assert(shmctl_status != -1);
173 printf ("Use of shm.\n");
178 printf ("Can't use shm. Use standard functions.\n");
179 shmdt (shminfo.shmaddr);
180 shmctl (shminfo.shmid, IPC_RMID, 0);
186 main (int argc, char *argv[])
196 XCBRECTANGLE rect_coord = { 0, 0, W_W, W_H};
207 printf ("Usage: lissajoux try_shm\n");
208 printf (" try_shm == 0: shm not used\n");
209 printf (" try_shm != 0: shm is used (if available)\n");
213 try_shm = atoi (argv[1]);
217 data.conn = XCBConnect (0, &screen_num);
218 screen = XCBAuxGetScreen(data.conn, screen_num);
219 data.depth = XCBAuxGetDepth (data.conn, screen);
221 win.window = screen->root;
223 data.gc = XCBGCONTEXTNew (data.conn);
224 mask = GCForeground | GCGraphicsExposures;
225 valgc[0] = screen->black_pixel;
226 valgc[1] = 0; /* no graphics exposures */
227 XCBCreateGC (data.conn, data.gc, win, mask, valgc);
229 bgcolor = XCBGCONTEXTNew (data.conn);
230 mask = GCForeground | GCGraphicsExposures;
231 valgc[0] = screen->white_pixel;
232 valgc[1] = 0; /* no graphics exposures */
233 XCBCreateGC (data.conn, bgcolor, win, mask, valgc);
235 data.draw.window = XCBWINDOWNew (data.conn);
236 mask = XCBCWBackPixel | XCBCWEventMask | XCBCWDontPropagate;
237 valwin[0] = screen->white_pixel;
238 valwin[1] = KeyPressMask | ButtonReleaseMask | ExposureMask;
239 valwin[2] = ButtonPressMask;
240 XCBCreateWindow (data.conn, 0,
248 XCBMapWindow (data.conn, data.draw.window);
250 rect.pixmap = XCBPIXMAPNew (data.conn);
251 XCBCreatePixmap (data.conn, data.depth,
252 rect.pixmap, data.draw,
254 XCBPolyFillRectangle(data.conn, rect, bgcolor, 1, &rect_coord);
256 data.format = ZPixmap;
257 XCBSync (data.conn, 0);
262 for (i = 0; i < 3600; i++) {
263 tab_cos[i] = cos (2.0 * 3.1415926535897 * (double)i / 3600.0);
264 tab_sin[i] = sin (2.0 * 3.1415926535897 * (double)i / 3600.0);
267 time_start = get_time ();
271 e = XCBPollForEvent(data.conn, NULL);
274 switch (e->response_type)
277 XCBCopyArea(data.conn, rect, data.draw, bgcolor,
278 0, 0, 0, 0, W_W, W_H);
279 XCBSync (data.conn, 0);
285 XCBFlush (data.conn);