forked from mirrors/gecko-dev
03f68881d2
MozReview-Commit-ID: 5rPI7jNI94K --HG-- extra : rebase_source : 20ffeb6e064de9ccf19729aa6045ffa595c51429
64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebRenderDisplayItemLayer.h"
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#include "LayersLogging.h"
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#include "mozilla/webrender/webrender_ffi.h"
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#include "mozilla/webrender/WebRenderTypes.h"
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#include "mozilla/layers/ScrollingLayersHelper.h"
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#include "mozilla/layers/StackingContextHelper.h"
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#include "mozilla/layers/WebRenderBridgeChild.h"
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#include "nsDisplayList.h"
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#include "mozilla/gfx/Matrix.h"
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#include "UnitTransforms.h"
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namespace mozilla {
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namespace layers {
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WebRenderDisplayItemLayer::~WebRenderDisplayItemLayer()
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{
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MOZ_COUNT_DTOR(WebRenderDisplayItemLayer);
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}
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void
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WebRenderDisplayItemLayer::RenderLayer(wr::DisplayListBuilder& aBuilder,
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const StackingContextHelper& aSc)
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{
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if (mVisibleRegion.IsEmpty()) {
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return;
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}
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ScrollingLayersHelper scroller(this, aBuilder, aSc);
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if (mItem) {
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WrSize contentSize; // this won't actually be used by anything
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wr::DisplayListBuilder builder(WrBridge()->GetPipeline(), contentSize);
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// We might have recycled this layer. Throw away the old commands.
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mParentCommands.Clear();
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mItem->CreateWebRenderCommands(builder, aSc, mParentCommands, WrManager(),
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GetDisplayListBuilder());
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builder.Finalize(contentSize, mBuiltDisplayList);
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} else {
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// else we have an empty transaction and just use the
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// old commands.
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WebRenderLayerManager* manager = WrManager();
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MOZ_ASSERT(manager);
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// Since our recording relies on our parent layer's transform and stacking context
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// If this layer or our parent changed, this empty transaction won't work.
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if (manager->IsMutatedLayer(this) || manager->IsMutatedLayer(GetParent())) {
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manager->SetTransactionIncomplete();
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return;
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}
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}
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aBuilder.PushBuiltDisplayList(mBuiltDisplayList);
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WrBridge()->AddWebRenderParentCommands(mParentCommands);
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}
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} // namespace layers
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} // namespace mozilla
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