Bug 1587210. Always clear mInvalidRect. r=mstange
authorJeff Muizelaar <jrmuizel@gmail.com>
Wed, 09 Oct 2019 18:10:54 +0000
changeset 497016 274e04b03f6e499ffe1a5f42ee5859a6879c1321
parent 497015 cc3b0415682819c351fc94d6142d3486004605fe
child 497017 69c42f69941b829ce119e484d7b94d3b11e45b4f
push id36674
push userccoroiu@mozilla.com
push dateThu, 10 Oct 2019 09:26:37 +0000
treeherdermozilla-central@f20fa8068ec2 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
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Bug 1587210. Always clear mInvalidRect. r=mstange In the future mInvalidRect and some other state should move out of DIGroup and into a non-persistant struct that's only used during Group building. This will allow us to completely avoid errors like this. Differential Revision: https://phabricator.services.mozilla.com/D48706
--- a/gfx/layers/wr/WebRenderCommandBuilder.cpp
+++ b/gfx/layers/wr/WebRenderCommandBuilder.cpp
@@ -726,17 +726,16 @@ struct DIGroup {
               mKey.value().second(), descriptor, bytes,
               dirtyRect)) {
     mFonts = std::move(fonts);
-    mInvalidRect.SetEmpty();
         ViewAs<ImagePixel>(mVisibleRect, PixelCastJustification::LayerIsImage));
     mLastVisibleRect = mVisibleRect;
     PushImage(aBuilder, itemBounds);
     GP("End EndGroup\n\n");
@@ -1212,16 +1211,18 @@ void Grouper::ConstructGroups(nsDisplayL
   nsDisplayItem* startOfCurrentGroup = item;
   while (item) {
     if (IsItemProbablyActive(item, mDisplayListBuilder)) {
       // We're going to be starting a new group.
       RefPtr<WebRenderGroupData> groupData =
               item, aBuilder.GetRenderRoot());
+      groupData->mFollowingGroup.mInvalidRect.SetEmpty();
       // Initialize groupData->mFollowingGroup with data from currentGroup.
       // We want to copy out this information before calling EndGroup because
       // EndGroup will set mLastVisibleRect depending on whether
       // we send something to WebRender.
       // TODO: compute the group bounds post-grouping, so that they can be
       // tighter for just the sublist that made it into this group.
       // We want to ensure the tight bounds are still clipped by area
@@ -1476,16 +1477,18 @@ void WebRenderCommandBuilder::DoGrouping
   GP("LayerBounds: %d %d %d %d\n", layerBounds.x, layerBounds.y,
      layerBounds.width, layerBounds.height);
   GP("VisibleRect: %d %d %d %d\n", visibleRect.x, visibleRect.y,
      visibleRect.width, visibleRect.height);
   GP("Inherrited scale %f %f\n", scale.width, scale.height);
   GP("Bounds: %d %d %d %d vs %d %d %d %d\n", p.x, p.y, p.width, p.height, q.x,
      q.y, q.width, q.height);
+  group.mInvalidRect.SetEmpty();
   if (group.mAppUnitsPerDevPixel != appUnitsPerDevPixel ||
       group.mScale != scale || group.mResidualOffset != residualOffset) {
     GP("Property change. Deleting blob\n");
     if (group.mAppUnitsPerDevPixel != appUnitsPerDevPixel) {
       GP(" App unit change %d -> %d\n", group.mAppUnitsPerDevPixel,