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Bug 778036 - Retain RefLayers instead of creating them every frame. r=roc

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This commit is contained in:
Matt Woodrow 2012-08-07 15:00:41 +12:00
parent 43288a2631
commit 3bfe559f19
3 changed files with 15 additions and 6 deletions
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5
gfx/layers/Layers.h
View File

@ -1395,7 +1395,10 @@ public:
void SetReferentId(uint64_t aId)
{
MOZ_ASSERT(aId != 0);
mId = aId;
if (mId != aId) {
mId = aId;
Mutated();
}
}
/**
* CONSTRUCTION PHASE ONLY

13
layout/ipc/RenderFrameParent.cpp
View File

@ -584,7 +584,8 @@ already_AddRefed<Layer>
RenderFrameParent::BuildLayer(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame,
LayerManager* aManager,
const nsIntRect& aVisibleRect)
const nsIntRect& aVisibleRect,
nsDisplayItem* aItem)
{
NS_ABORT_IF_FALSE(aFrame,
"makes no sense to have a shadow tree without a frame");
@ -607,13 +608,17 @@ RenderFrameParent::BuildLayer(nsDisplayListBuilder* aBuilder,
if (0 != id) {
MOZ_ASSERT(!GetRootLayer());
nsRefPtr<RefLayer> layer = aManager->CreateRefLayer();
nsRefPtr<Layer> layer =
(GetLayerBuilderForManager(aManager)->GetLeafLayerFor(aBuilder, aManager, aItem));
if (!layer) {
layer = aManager->CreateRefLayer();
}
if (!layer) {
// Probably a temporary layer manager that doesn't know how to
// use ref layers.
return nullptr;
}
layer->SetReferentId(id);
static_cast<RefLayer*>(layer.get())->SetReferentId(id);
layer->SetVisibleRegion(aVisibleRect);
nsIntPoint rootFrameOffset = GetRootFrameOffset(aFrame, aBuilder);
layer->SetBaseTransform(
@ -862,7 +867,7 @@ nsDisplayRemote::BuildLayer(nsDisplayListBuilder* aBuilder,
{
PRInt32 appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
nsIntRect visibleRect = GetVisibleRect().ToNearestPixels(appUnitsPerDevPixel);
nsRefPtr<Layer> layer = mRemoteFrame->BuildLayer(aBuilder, mFrame, aManager, visibleRect);
nsRefPtr<Layer> layer = mRemoteFrame->BuildLayer(aBuilder, mFrame, aManager, visibleRect, this);
return layer.forget();
}

3
layout/ipc/RenderFrameParent.h
View File

@ -82,7 +82,8 @@ public:
already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame,
LayerManager* aManager,
const nsIntRect& aVisibleRect);
const nsIntRect& aVisibleRect,
nsDisplayItem* aItem);
void OwnerContentChanged(nsIContent* aContent);