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dont busywait for surface flip

This commit is contained in:
espes 2015-06-21 11:50:53 +10:00
parent 2bb6b5b275
commit f0184232aa
1 changed files with 5 additions and 10 deletions
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15
hw/xbox/nv2a.c
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@ -937,7 +937,7 @@ typedef struct PGRAPHState {
bool fifo_access;
QemuCond fifo_access_cond;
QemuSemaphore read_3d;
QemuCond flip_3d;
unsigned int channel_id;
bool channel_valid;
@ -2136,7 +2136,7 @@ static void pgraph_init(PGRAPHState *pg)
qemu_mutex_init(&pg->lock);
qemu_cond_init(&pg->interrupt_cond);
qemu_cond_init(&pg->fifo_access_cond);
qemu_sem_init(&pg->read_3d, 0);
qemu_cond_init(&pg->flip_3d);
/* fire up opengl */
@ -2206,7 +2206,7 @@ static void pgraph_destroy(PGRAPHState *pg)
qemu_mutex_destroy(&pg->lock);
qemu_cond_destroy(&pg->interrupt_cond);
qemu_cond_destroy(&pg->fifo_access_cond);
qemu_sem_destroy(&pg->read_3d);
qemu_cond_destroy(&pg->flip_3d);
glo_set_current(pg->gl_context);
@ -2422,19 +2422,13 @@ static void pgraph_method(NV2AState *d,
case NV097_FLIP_STALL:
pgraph_update_surface(d, false);
qemu_mutex_unlock(&pg->lock);
// busy-wait for now...
while (true) {
qemu_mutex_lock(&pg->lock);
uint32_t s = pg->regs[NV_PGRAPH_SURFACE];
if (GET_MASK(s, NV_PGRAPH_SURFACE_READ_3D)
== GET_MASK(s, NV_PGRAPH_SURFACE_WRITE_3D)) {
break;
}
qemu_mutex_unlock(&pg->lock);
qemu_cond_wait(&pg->flip_3d, &pg->lock);
}
break;
@ -4012,6 +4006,7 @@ static void pgraph_write(void *opaque, hwaddr addr,
NV_PGRAPH_SURFACE_READ_3D)+1)
% GET_MASK(d->pgraph.regs[NV_PGRAPH_SURFACE],
NV_PGRAPH_SURFACE_MODULO_3D) );
qemu_cond_broadcast(&d->pgraph.flip_3d);
}
break;
case NV_PGRAPH_FIFO: