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authorPeter Hutterer <peter.hutterer@who-t.net>2009-08-13 06:37:00 (GMT)
committerPeter Hutterer <peter.hutterer@who-t.net>2009-08-13 21:49:52 (GMT)
commitdb568f9eabf3450d8a023597ff007df355b13ea8 (patch)
tree003fa7f931f5a46204d516e6651510c05c21382f
parenta3e50b05747cab92090ae7d7f4475cd61d3fcadf (diff)
Xext: fix up wrong conditions for negative sync transitions.
If the counter had a value higher than the trigger value for a negative transition, the trigger value did not get set. The correct sequence of checks is: if (positive transition) if (counter value < trigger value) set up trigger if (negative transition) if (counter value > trigger value) set up trigger Red Hat Bug 501601 <https://bugzilla.redhat.com/show_bug.cgi?id=501601> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
-rw-r--r--Xext/sync.c32
1 files changed, 14 insertions, 18 deletions
diff --git a/Xext/sync.c b/Xext/sync.c
index 5f4ce56..667f8ab 100644
--- a/Xext/sync.c
+++ b/Xext/sync.c
@@ -962,28 +962,24 @@ SyncComputeBracketValues(SyncCounter *pCounter, Bool startOver)
pnewltval = &psci->bracket_less;
}
}
- else if ( (pTrigger->test_type == XSyncPositiveTransition &&
+ else if (pTrigger->test_type == XSyncNegativeTransition &&
ct != XSyncCounterNeverIncreases)
- ||
- (pTrigger->test_type == XSyncNegativeTransition &&
+ {
+ if (XSyncValueGreaterThan(pCounter->value, pTrigger->test_value) &&
+ XSyncValueGreaterThan(pTrigger->test_value, psci->bracket_less))
+ {
+ psci->bracket_less = pTrigger->test_value;
+ pnewltval = &psci->bracket_less;
+ }
+ }
+ else if (pTrigger->test_type == XSyncPositiveTransition &&
ct != XSyncCounterNeverDecreases)
- )
{
- if (XSyncValueLessThan(pCounter->value, pTrigger->test_value))
+ if (XSyncValueLessThan(pCounter->value, pTrigger->test_value) &&
+ XSyncValueLessThan(pTrigger->test_value, psci->bracket_greater))
{
- if (XSyncValueLessThan(pTrigger->test_value,
- psci->bracket_greater))
- {
- psci->bracket_greater = pTrigger->test_value;
- pnewgtval = &psci->bracket_greater;
- }
- else
- if (XSyncValueGreaterThan(pTrigger->test_value,
- psci->bracket_less))
- {
- psci->bracket_less = pTrigger->test_value;
- pnewltval = &psci->bracket_less;
- }
+ psci->bracket_greater = pTrigger->test_value;
+ pnewgtval = &psci->bracket_greater;
}
}
} /* end for each trigger */