Date: Mon, 11 Dec 2000 16:18:47 +0200 From: Peter Pentchev <roam@orbitel.bg> To: hackers@FreeBSD.org Subject: eye-candy hack - warp_saver changing direction :) Message-ID: <20001211161847.A606@ringworld.oblivion.bg>
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So.. if anybody else is using the warp screen saver, here's a little patch
to make it reverse direction from time to time; as my boss put it, "I don't
know about you, but an hour of your screen rolling over to the right makes
me dizzy." :)
This one defines two sysctl's - kern.warp_dir (zero to roll to the left,
non-zero to roll the other way), and kern.warp_period (number of iterations
before changing direction). The warp_period is measured in.. seconds, isn't
it - how often the saver is called to do its dance..
Attached are patches against -current and 4.2-STABLE; hope this does not
look too ugly :)
G'luck,
Peter
--
"yields falsehood, when appended to its quotation." yields falsehood, when appended to its quotation.
Patch against -current:
Index: src/sys/modules/syscons/warp/warp_saver.c
===================================================================
RCS file: /home/ncvs/src/sys/modules/syscons/warp/warp_saver.c,v
retrieving revision 1.9
diff -u -r1.9 warp_saver.c
--- src/sys/modules/syscons/warp/warp_saver.c 2000/06/25 09:39:11 1.9
+++ src/sys/modules/syscons/warp/warp_saver.c 2000/12/11 14:00:29
@@ -35,6 +35,7 @@
#include <sys/syslog.h>
#include <sys/consio.h>
#include <sys/fbio.h>
+#include <sys/sysctl.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
@@ -58,19 +59,35 @@
/* the rest is zero-filled by the compiler */
};
+static int warp_dir = 1, warp_period = 10000;
+SYSCTL_INT(_kern, OID_AUTO, warp_dir, CTLFLAG_RW, &warp_dir, 0, "")
+SYSCTL_INT(_kern, OID_AUTO, warp_period, CTLFLAG_RW, &warp_period, 0, "")
+
static void
-warp_update(void)
+warp_update(int *pdir, int period)
{
int i, j, k, n;
+ static int cur_state = 0;
for (i = 1, k = 0, n = SPP*8; i < 5; i++, n /= 2)
for (j = 0; j < n; j++, k++) {
vid[star[k]] = 0;
- star[k] += i;
- if (star[k] > SCRW*SCRH)
- star[k] -= SCRW*SCRH;
+ if (*pdir) {
+ star[k] += i;
+ if (star[k] > SCRW*SCRH)
+ star[k] -= SCRW*SCRH;
+ } else {
+ star[k] -= i;
+ if (star[k] < 0)
+ star[k] += SCRW*SCRH;
+ }
vid[star[k]] = i;
}
+
+ if (++cur_state >= period) {
+ *pdir = !*pdir;
+ cur_state = 0;
+ }
}
static int
@@ -94,7 +111,7 @@
}
/* update display */
- warp_update();
+ warp_update(&warp_dir, warp_period);
} else {
blanked = 0;
...........................
...and against 4.2-STABLE..
Index: src/sys/modules/syscons/warp/warp_saver.c
===================================================================
RCS file: /home/ncvs/src/sys/modules/syscons/warp/warp_saver.c,v
retrieving revision 1.7.2.1
diff -u -r1.7.2.1 warp_saver.c
--- src/sys/modules/syscons/warp/warp_saver.c 2000/05/10 16:26:47 1.7.2.1
+++ src/sys/modules/syscons/warp/warp_saver.c 2000/12/11 13:58:14
@@ -36,6 +36,7 @@
#include <sys/consio.h>
#include <sys/fbio.h>
#include <sys/random.h>
+#include <sys/sysctl.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
@@ -59,19 +60,35 @@
/* the rest is zero-filled by the compiler */
};
+static int warp_dir = 1, warp_period = 10000;
+SYSCTL_INT(_kern, OID_AUTO, warp_dir, CTLFLAG_RW, &warp_dir, 0, "")
+SYSCTL_INT(_kern, OID_AUTO, warp_period, CTLFLAG_RW, &warp_period, 0, "")
+
static void
-warp_update(void)
+warp_update(int *pdir, int period)
{
int i, j, k, n;
+ static int cur_state = 0;
for (i = 1, k = 0, n = SPP*8; i < 5; i++, n /= 2)
for (j = 0; j < n; j++, k++) {
vid[star[k]] = 0;
- star[k] += i;
- if (star[k] > SCRW*SCRH)
- star[k] -= SCRW*SCRH;
+ if (*pdir) {
+ star[k] += i;
+ if (star[k] > SCRW*SCRH)
+ star[k] -= SCRW*SCRH;
+ } else {
+ star[k] -= i;
+ if (star[k] < 0)
+ star[k] += SCRW*SCRH;
+ }
vid[star[k]] = i;
}
+
+ if (++cur_state >= period) {
+ *pdir = !*pdir;
+ cur_state = 0;
+ }
}
static int
@@ -95,7 +112,7 @@
}
/* update display */
- warp_update();
+ warp_update(&warp_dir, warp_period);
} else {
blanked = 0;
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