ccaw001@UTADNX.CC.UTEXAS.EDU ("Rick Watson") (07/22/88)
Here's a patch to enable video-blanking screen saving for DEC
monochrome displays using the qvss driver. No more waiting to refresh
the screen! I've only tested this under Ultrix v2.2 on a VAXStation II.
Rick Watson
University of Texas Computation Center
arpa: watson@utadnx.cc.utexas.edu (128.83.1.26)
uucp: ...seismo!ut-sally!ut-emx!rick
bitnet: watson@utadnx
span: utspan::watson (UTSPAN is 25.128)
phone: 512/471-8220 512/471-3241
-----------------------------------------------------------------------------
VERSION:
X11 release 2
CLIENT MACHINE:
DEC VAXStation-II with qvss monochrome display
CLIENT OPERATING SYSTEM:
Ultrix 2.2
DISPLAY:
VS-II monochome display
DESCRIPTION:
Xqvss doesn't do video blanking for screen saving.
FIX:
Patch to ./server/ddx/dec/qvss/qvss_io.c follows. I made the change
ifdef'ed on QIOVIDEOON because I don't know if the video on/off
ioctl exists prior to Ultrix 2.2.
*** qvss_io.c.orig Wed Dec 23 00:28:20 1987
--- qvss_io.c Thu Jul 21 09:56:02 1988
***************
*** 74,79
#define MAX_LED 3 /* only 3 LED's can be set by user; Lock LED is controlled by server */
/* ARGSUSED */
static Bool
qvssSaveScreen(pScreen, on)
--- 74,80 -----
#define MAX_LED 3 /* only 3 LED's can be set by user; Lock LED is controlled by server */
+ #ifdef QIOVIDEOON /* if we know how to do this */
/* ARGSUSED */
static Bool
qvssSaveScreen(pScreen, on)
***************
*** 80,85
ScreenPtr pScreen;
int on;
{
if (on == SCREEN_SAVER_FORCER)
{
lastEventTime = GetTimeInMillis();
--- 81,109 -----
ScreenPtr pScreen;
int on;
{
+ if ( on == SCREEN_SAVER_FORCER)
+ {
+ lastEventTime = GetTimeInMillis();
+ }
+ else if (on == SCREEN_SAVER_ON) /* turn screen off */
+ {
+ ioctl(fdQVSS, QIOVIDEOOFF);
+ }
+ else /* turn screen on */
+ {
+ ioctl(fdQVSS, QIOVIDEOON);
+ }
+ return TRUE;
+ }
+
+ #else
+
+ /* ARGSUSED */
+ static Bool
+ qvssSaveScreen(pScreen, on)
+ ScreenPtr pScreen;
+ int on;
+ {
if (on == SCREEN_SAVER_FORCER)
{
lastEventTime = GetTimeInMillis();
***************
*** 88,93
else
return FALSE;
}
/* ARGSUSED */
static Bool
--- 112,118 -----
else
return FALSE;
}
+ #endif
/* ARGSUSED */
static Bool