ed6e5a8d25
This class is a RAII class that can be used to push a stacking context with properties from a WebRenderLayer. It can also then be used to convert rects in the layer coordinate system to be relative to the stacking context, which is what we want for passing to WR. MozReview-Commit-ID: 1WVrfRYqLqc
104 lines
2.9 KiB
C++
104 lines
2.9 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 "WebRenderCanvasLayer.h"
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#include "AsyncCanvasRenderer.h"
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#include "gfxPrefs.h"
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#include "gfxUtils.h"
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#include "GLContext.h"
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#include "GLScreenBuffer.h"
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#include "LayersLogging.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/layers/StackingContextHelper.h"
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#include "mozilla/layers/TextureClientSharedSurface.h"
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#include "mozilla/layers/WebRenderBridgeChild.h"
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#include "PersistentBufferProvider.h"
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#include "SharedSurface.h"
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#include "SharedSurfaceGL.h"
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#include "mozilla/webrender/WebRenderTypes.h"
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namespace mozilla {
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namespace layers {
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WebRenderCanvasLayer::~WebRenderCanvasLayer()
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{
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MOZ_COUNT_DTOR(WebRenderCanvasLayer);
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if (mExternalImageId.isSome()) {
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WrBridge()->DeallocExternalImageId(mExternalImageId.ref());
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}
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}
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void
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WebRenderCanvasLayer::Initialize(const Data& aData)
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{
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ShareableCanvasLayer::Initialize(aData);
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// XXX: Use basic surface factory until we support shared surface.
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if (!mGLContext || mGLFrontbuffer)
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return;
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gl::GLScreenBuffer* screen = mGLContext->Screen();
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auto factory = MakeUnique<gl::SurfaceFactory_Basic>(mGLContext, screen->mCaps, mFlags);
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screen->Morph(Move(factory));
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}
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void
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WebRenderCanvasLayer::RenderLayer(wr::DisplayListBuilder& aBuilder)
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{
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UpdateCompositableClient();
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if (mExternalImageId.isNothing()) {
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mExternalImageId = Some(WrBridge()->AllocExternalImageIdForCompositable(mCanvasClient));
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}
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Maybe<gfx::Matrix4x4> transform;
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const bool needsYFlip = (mOriginPos == gl::OriginPos::BottomLeft);
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if (needsYFlip) {
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transform = Some(GetTransform().PreTranslate(0, mBounds.height, 0).PreScale(1, -1, 1));
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}
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StackingContextHelper sc(aBuilder, this, transform);
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LayerRect rect(0, 0, mBounds.width, mBounds.height);
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DumpLayerInfo("CanvasLayer", rect);
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LayerRect clipRect = ClipRect().valueOr(rect);
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Maybe<WrImageMask> mask = BuildWrMaskLayer(true);
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WrClipRegion clip = aBuilder.BuildClipRegion(
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sc.ToRelativeWrRect(clipRect),
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mask.ptrOr(nullptr));
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wr::ImageRendering filter = wr::ToImageRendering(mSamplingFilter);
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if (gfxPrefs::LayersDump()) {
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printf_stderr("CanvasLayer %p texture-filter=%s\n",
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this->GetLayer(),
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Stringify(filter).c_str());
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}
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WrImageKey key = GetImageKey();
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WrBridge()->AddWebRenderParentCommand(OpAddExternalImage(mExternalImageId.value(), key));
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Manager()->AddImageKeyForDiscard(key);
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aBuilder.PushImage(sc.ToRelativeWrRect(rect), clip, filter, key);
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}
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void
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WebRenderCanvasLayer::AttachCompositable()
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{
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mCanvasClient->Connect();
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}
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CompositableForwarder*
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WebRenderCanvasLayer::GetForwarder()
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{
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return Manager()->WrBridge();
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}
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} // namespace layers
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} // namespace mozilla
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