diff options
| -rw-r--r-- | src/mesa/drivers/dri/common/vblank.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/src/mesa/drivers/dri/common/vblank.c b/src/mesa/drivers/dri/common/vblank.c index d610253fe6..12aeaa108f 100644 --- a/src/mesa/drivers/dri/common/vblank.c +++ b/src/mesa/drivers/dri/common/vblank.c @@ -130,9 +130,8 @@ int driWaitForMSC32( __DRIdrawablePrivate *priv, if ( divisor != 0 ) { - unsigned int target = (unsigned int)target_msc; - unsigned int next = target; - unsigned int r; + int64_t next = target_msc; + int64_t r; int dont_wait = (target_msc == 0); do { @@ -154,9 +153,9 @@ int driWaitForMSC32( __DRIdrawablePrivate *priv, *msc = vblank_to_msc(priv, vbl.reply.sequence); - dont_wait = 0; - if (target_msc != 0 && *msc == target) + if (!dont_wait && *msc == next) break; + dont_wait = 0; /* Assuming the wait-done test fails, the next refresh to wait for * will be one that satisfies (MSC % divisor) == remainder. The @@ -165,11 +164,12 @@ int driWaitForMSC32( __DRIdrawablePrivate *priv, * If this refresh has already happened, we add divisor to obtain * the next refresh after the current one that will satisfy it. */ - r = (*msc % (unsigned int)divisor); - next = (*msc - r + (unsigned int)remainder); - if (next <= *msc) next += (unsigned int)divisor; + r = ((uint64_t)*msc % divisor); + next = (*msc - r + remainder); + if (next <= *msc) + next += divisor; - } while ( r != (unsigned int)remainder ); + } while (r != remainder); } else { /* If the \c divisor is zero, just wait until the MSC is greater |