xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

games/snes: do message display in screenproc

Browse source 
do the message drawing from the screenproc so there are no
race conditions with libdraw.
This commit is contained in:
cinap_lenrek 2014-11-20 01:26:31 +01:00
parent dc2c8dca5b
commit 5a6131ea09
1 changed files with 16 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
sys/src/games/snes/snes.c
View file

@ -13,7 +13,7 @@ int nprg, nsram, hirom, battery;
int ppuclock, spcclock, dspclock, stimerclock, saveclock, msgclock, paused, perfclock, cpupause;
Mousectl *mc;
Channel *flushc;
Channel *flushc, *msgc;
QLock pauselock;
u32int keys;
int savefd, scale, profile, mouse, loadreq, savereq;
@ -191,14 +191,16 @@ void
screenproc(void *)
{
extern uchar pic[256*239*2*3];
char *s;
Mouse m;
Point p;
enum { AMOUSE, ARESIZE, AFLUSH, AEND };
enum { AMOUSE, ARESIZE, AFLUSH, AMSG, AEND };
Alt a[AEND+1] = {
{ mc->c, &m, CHANRCV },
{ mc->resizec, nil, CHANRCV },
{ flushc, nil, CHANRCV },
{ msgc, &s, CHANRCV },
{ nil, nil, CHANEND }
};
@ -245,6 +247,14 @@ screenproc(void *)
}
flushimage(display, 1);
break;
case AMSG:
draw(screen, rectaddpt(Rect(10, 10, 200, 30), screen->r.min), bg, nil, ZP);
if(s != nil){
string(screen, addpt(screen->r.min, Pt(10, 10)), display->black, ZP,
display->defaultfont, s);
free(s);
}
break;
}
}
}
@ -253,16 +263,11 @@ void
timing(void)
{
static vlong old;
static char buf[32];
vlong new;
new = nsec();
if(new != old)
sprint(buf, "%6.2f%%", 1e11 / (new - old));
else
buf[0] = 0;
draw(screen, rectaddpt(Rect(10, 10, 200, 30), screen->r.min), bg, nil, ZP);
string(screen, addpt(screen->r.min, Pt(10, 10)), display->black, ZP, display->defaultfont, buf);
message("%6.2f%%", 1e11 / (new - old));
old = nsec();
}
@ -310,6 +315,7 @@ usage:
if(initdraw(nil, nil, argv0) < 0)
sysfatal("initdraw: %r");
flushc = chancreate(sizeof(ulong), 1);
msgc = chancreate(sizeof(char*), 0);
mc = initmouse(nil, screen);
if(mc == nil)
sysfatal("initmouse: %r");
@ -367,7 +373,7 @@ usage:
if(msgclock > 0){
msgclock -= t;
if(msgclock <= 0){
draw(screen, screen->r, bg, nil, ZP);
sendp(msgc, nil); /* clear message */
msgclock = 0;
}
}
@ -389,11 +395,9 @@ void
message(char *fmt, ...)
{
va_list va;
static char buf[512];
va_start(va, fmt);
vsnprint(buf, sizeof buf, fmt, va);
string(screen, Pt(10, 10), display->black, ZP, display->defaultfont, buf);
sendp(msgc, vsmprint(fmt, va));
msgclock = FREQ;
va_end(va);
}