xserver: Branch 'master'
Peter Hutterer
whot at kemper.freedesktop.org
Thu Aug 13 14:51:31 PDT 2009
Xext/sync.c | 32 ++++++++++++++------------------
1 file changed, 14 insertions(+), 18 deletions(-)
New commits:
commit db568f9eabf3450d8a023597ff007df355b13ea8
Author: Peter Hutterer <peter.hutterer at who-t.net>
Date: Thu Aug 13 16:37:00 2009 +1000
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 at who-t.net>
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 */
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