qf/quakeforge
0
0
Fork 0
mirror of https://git.code.sf.net/p/quake/quakeforge synced 2025-04-10 11:20:46 +00:00
Code Issues Projects Releases Packages Wiki Activity

[input] Use non-blocking IO for reading events

Browse source 
evdev can send multiple event packets for a single "event", but QF was
reading them one per frame, thus the feeling of buffered input at lower
frame rates (because they were buffered in the kernel). This also takes
care of most of the jerky motion with my 3d mouse, though there is still
a weird snap every second or so when rotating and translating at the
same time.
This commit is contained in:
Bill Currie 2024-02-02 08:41:26 +09:00
parent 9998a9b2c4
commit 12ecc81470
1 changed files with 14 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
libs/input/evdev/inputlib.c
View file

@ -8,6 +8,7 @@
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
@ -192,7 +193,7 @@ check_device (const char *path)
device_t *dev;
int fd;
fd = open (path, O_RDWR);
fd = open (path, O_RDWR | O_NONBLOCK);
if (fd == -1)
return -1;
@ -235,7 +236,7 @@ check_device (const char *path)
return fd;
}
/*static const char *event_codes[] = {
static const char *event_codes[] = {
"EV_SYN",
"EV_KEY",
"EV_REL",
@ -250,7 +251,7 @@ check_device (const char *path)
"EV_FF",
"EV_PWR",
"EV_FF_STATUS",
};*/
};
static void
read_device_input (device_t *dev)
@ -267,16 +268,21 @@ read_device_input (device_t *dev)
while (1) {
if (read (dev->fd, &event, sizeof (event)) < 0) {
perror(dev->name);
dev->fd = -1;
if (errno != EWOULDBLOCK) {
perror(dev->name);
dev->fd = -1;
}
return;
}
//const char *ev = event_codes[event.type];
//Sys_Printf ("%6d(%s) %6d %6x\n", event.type, ev ? ev : "?", event.code, event.value);
if (0) {
const char *ev = event_codes[event.type];
Sys_Printf ("%6d(%s) %6d %6x\n", event.type, ev ? ev : "?",
event.code, event.value);
}
switch (event.type) {
case EV_SYN:
dev->event_count++;
return;
break;
case EV_KEY:
button = &dev->buttons[dev->button_map[event.code]];
button->state = event.value;