Bug 735178 - Add error tolerance values when sorting preserve-3d layers. r=roc
authorMatt Woodrow <mwoodrow@mozilla.com>
Fri, 27 Apr 2012 12:24:53 +1200
changeset 92576 302c5a56596573df8124f30823a2e798e2b17a4f
parent 92575 7a077df0c773fc9044cfa33ec58a64ff919f5de4
child 92577 20f5d6d265cb16b1ff206966cceab4eee6cb8255
push id22544
push useremorley@mozilla.com
push dateFri, 27 Apr 2012 11:53:27 +0000
treeherdermozilla-central@d871849ac3a3 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewersroc
bugs735178
milestone15.0a1
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Bug 735178 - Add error tolerance values when sorting preserve-3d layers. r=roc
gfx/layers/LayerSorter.cpp
--- a/gfx/layers/LayerSorter.cpp
+++ b/gfx/layers/LayerSorter.cpp
@@ -151,17 +151,17 @@ static LayerSortOrder CompareDepth(Layer
 
     gfxFloat difference = otherDepth - ourDepth;
 
     if (fabs(difference) > fabs(highest)) {
       highest = difference;
     }
   }
   // If layers have the same depth keep the original order
-  if (highest >= 0) {
+  if (fabs(highest) < 0.1 || highest >= 0) {
     return ABeforeB;
   } else {
     return BBeforeA;
   }
 }
 
 #ifdef DEBUG
 static bool gDumpLayerSortList = getenv("MOZ_DUMP_LAYER_SORT_LIST") != 0;