diff options
Diffstat (limited to 'src/glut/dos/callback.c')
| -rw-r--r-- | src/glut/dos/callback.c | 64 |
1 files changed, 63 insertions, 1 deletions
diff --git a/src/glut/dos/callback.c b/src/glut/dos/callback.c index 8ab75e794c5..174cbdda996 100644 --- a/src/glut/dos/callback.c +++ b/src/glut/dos/callback.c @@ -19,7 +19,7 @@ */ /* - * DOS/DJGPP glut driver v1.3 for Mesa + * DOS/DJGPP glut driver v1.4 for Mesa * * Copyright (C) 2002 - Borca Daniel * Email : [email protected] @@ -31,10 +31,33 @@ +typedef struct { + void (*func) (int); /* function to call */ + int value; /* value to pass to callback */ + int ttl; /* time to live (blank shots) */ + int fid; /* func-id as returned from PCHW */ +} GLUTSShotCB; + +static GLboolean g_sscb_semaphore; + GLUTidleCB g_idle_func = NULL; +static void g_single_shot_callback (void *opaque) +{ + GLUTSShotCB *cb = (GLUTSShotCB *)opaque; + while (g_sscb_semaphore) { + } + if (!--cb->ttl) { + cb->func(cb->value); + pc_remove_int(cb->fid); + cb->func = NULL; + } +} ENDOFUNC(g_single_shot_callback) + + + void APIENTRY glutDisplayFunc (GLUTdisplayCB func) { g_curwin->display = func; @@ -106,6 +129,45 @@ void APIENTRY glutIdleFunc (GLUTidleCB func) void APIENTRY glutTimerFunc (unsigned int millis, GLUTtimerCB func, int value) { + static GLUTSShotCB g_sscb[MAX_SSHOT_CB]; + static int virgin = GL_TRUE; + + int i; + int ttl; + unsigned int freq; + + if (virgin) { + virgin = GL_FALSE; + LOCKDATA(g_sscb); + LOCKDATA(g_sscb_semaphore); + LOCKFUNC(g_single_shot_callback); + /* we should lock the callee also... */ + } + + if (millis > 0) { + if (millis > 50) { + /* don't go beyond 20Hz */ + freq = 200; + ttl = millis * freq / 1000; + } else { + freq = 1000 / millis; + ttl = 1; + } + g_sscb_semaphore++; + for (i = 0; i < MAX_SSHOT_CB; i++) { + if (g_sscb[i].func == NULL) { + int fid = pc_install_int((PFUNC)func, &g_sscb[i], freq); + if (fid >= 0) { + g_sscb[i].func = func; + g_sscb[i].value = value; + g_sscb[i].ttl = ttl; + g_sscb[i].fid = fid; + } + break; + } + } + g_sscb_semaphore--; + } } |