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Adding a more efficient drawing code.

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Thanks Mihail Zenkov <mihail.zenkov@gmail.com> for giving the hint!
This commit is contained in:
Christoph Lohmann 2013-02-15 19:10:22 +01:00
parent b7261c84aa
commit 95033753be
2 changed files with 42 additions and 28 deletions
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5
config.def.h
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@ -9,10 +9,13 @@ static char font[] = "Liberation Mono:pixelsize=12:antialias=false:autohint=fals
static int borderpx = 2; static int borderpx = 2;
static char shell[] = "/bin/sh"; static char shell[] = "/bin/sh";
/* double-click timeout (in milliseconds) between clicks for selection */ /* timeouts (in milliseconds) */
static unsigned int doubleclicktimeout = 300; static unsigned int doubleclicktimeout = 300;
static unsigned int tripleclicktimeout = 600; static unsigned int tripleclicktimeout = 600;
/* frames per second st should at maximum draw to the screen */
static unsigned int framespersecond = 60;
/* TERM value */ /* TERM value */
static char termname[] = "st-256color"; static char termname[] = "st-256color";

51
st.c
View File

@ -3166,10 +3166,12 @@ void
run(void) { run(void) {
XEvent ev; XEvent ev;
fd_set rfd; fd_set rfd;
int xfd = XConnectionNumber(xw.dpy), i; int xfd = XConnectionNumber(xw.dpy);
struct timeval drawtimeout, *tv = NULL; struct timeval drawtimeout, *tv = NULL, now, last;
for(i = 0;; i++) { gettimeofday(&last, NULL);
for(;;) {
FD_ZERO(&rfd); FD_ZERO(&rfd);
FD_SET(cmdfd, &rfd); FD_SET(cmdfd, &rfd);
FD_SET(xfd, &rfd); FD_SET(xfd, &rfd);
@ -3179,25 +3181,25 @@ run(void) {
die("select failed: %s\n", SERRNO); die("select failed: %s\n", SERRNO);
} }
/* gettimeofday(&now, NULL);
* Stop after a certain number of reads so the user does not /* usecs until (next) frame */
* feel like the system is stuttering. drawtimeout.tv_sec = 0;
*/ drawtimeout.tv_usec = \
if(i < 1000 && FD_ISSET(cmdfd, &rfd)) { ((1000/framespersecond) - TIMEDIFF(now, last)) * 1000;
/* Let us draw a frame. */
if(drawtimeout.tv_usec <= 0) {
draw();
XFlush(xw.dpy);
last = now;
tv = NULL;
}
if(FD_ISSET(cmdfd, &rfd))
ttyread(); ttyread();
/* if(FD_ISSET(xfd, &rfd)) {
* Just wait a bit so it isn't disturbing the
* user and the system is able to write something.
*/
drawtimeout.tv_sec = 0;
drawtimeout.tv_usec = 5;
tv = &drawtimeout;
continue;
}
i = 0;
tv = NULL;
while(XPending(xw.dpy)) { while(XPending(xw.dpy)) {
XNextEvent(xw.dpy, &ev); XNextEvent(xw.dpy, &ev);
if(XFilterEvent(&ev, None)) if(XFilterEvent(&ev, None))
@ -3206,11 +3208,20 @@ run(void) {
(handler[ev.type])(&ev); (handler[ev.type])(&ev);
} }
if(drawtimeout.tv_usec <= 0) {
draw(); draw();
XFlush(xw.dpy); XFlush(xw.dpy);
} }
} }
/* There is still some time to wait until next frame. */
if(drawtimeout.tv_usec > 0) {
tv = &drawtimeout;
continue;
}
}
}
int int
main(int argc, char *argv[]) { main(int argc, char *argv[]) {
int i, bitm, xr, yr; int i, bitm, xr, yr;