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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ClientPaintedLayer.h"
#include "ClientTiledPaintedLayer.h" // for ClientTiledPaintedLayer
#include <stdint.h> // for uint32_t
#include "GeckoProfiler.h" // for AUTO_PROFILER_LABEL
#include "client/ClientLayerManager.h" // for ClientLayerManager, etc
#include "gfxContext.h" // for gfxContext
#include "gfx2DGlue.h"
#include "gfxEnv.h" // for gfxEnv
#include "gfxRect.h" // for gfxRect
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/gfx/2D.h" // for DrawTarget
#include "mozilla/gfx/DrawEventRecorder.h"
#include "mozilla/gfx/Matrix.h" // for Matrix
#include "mozilla/gfx/Rect.h" // for Rect, IntRect
#include "mozilla/gfx/Types.h" // for Float, etc
#include "mozilla/layers/LayersTypes.h"
#include "mozilla/Preferences.h"
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsISupportsImpl.h" // for Layer::AddRef, etc
#include "nsRect.h" // for mozilla::gfx::IntRect
#include "PaintThread.h"
#include "ReadbackProcessor.h"
#include "RotatedBuffer.h"
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
bool ClientPaintedLayer::EnsureContentClient() {
if (!mContentClient) {
mContentClient = ContentClient::CreateContentClient(
ClientManager()->AsShadowForwarder());
if (!mContentClient) {
return false;
}
mContentClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
return true;
}
void ClientPaintedLayer::UpdateContentClient(PaintState& aState) {
Mutated();
AddToValidRegion(aState.mRegionToDraw);
ContentClientRemoteBuffer* contentClientRemote =
static_cast<ContentClientRemoteBuffer*>(mContentClient.get());
MOZ_ASSERT(contentClientRemote->GetIPCHandle());
// Hold(this) ensures this layer is kept alive through the current transaction
// The ContentClient assumes this layer is kept alive (e.g., in CreateBuffer),
// so deleting this Hold for whatever reason will break things.
ClientManager()->Hold(this);
contentClientRemote->Updated(aState.mRegionToDraw,
mVisibleRegion.ToUnknownRegion());
}
bool ClientPaintedLayer::UpdatePaintRegion(PaintState& aState) {
SubtractFromValidRegion(aState.mRegionToInvalidate);
if (!aState.mRegionToDraw.IsEmpty() &&
!ClientManager()->GetPaintedLayerCallback()) {
ClientManager()->SetTransactionIncomplete();
return false;
}
// The area that became invalid and is visible needs to be repainted
// (this could be the whole visible area if our buffer switched
// from RGB to RGBA, because we might need to repaint with
// subpixel AA)
aState.mRegionToInvalidate.And(aState.mRegionToInvalidate,
GetLocalVisibleRegion().ToUnknownRegion());
return true;
}
void ClientPaintedLayer::FinishPaintState(PaintState& aState) {
if (aState.mAsyncTask && !aState.mAsyncTask->mCapture->IsEmpty()) {
ClientManager()->SetQueuedAsyncPaints();
PaintThread::Get()->QueuePaintTask(std::move(aState.mAsyncTask));
}
}
uint32_t ClientPaintedLayer::GetPaintFlags(ReadbackProcessor* aReadback) {
uint32_t flags = ContentClient::PAINT_CAN_DRAW_ROTATED;
#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
if (ClientManager()->CompositorMightResample()) {
flags |= ContentClient::PAINT_WILL_RESAMPLE;
}
if (!(flags & ContentClient::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= ContentClient::PAINT_WILL_RESAMPLE;
}
}
#endif
if ((!aReadback || !UsedForReadback()) && PaintThread::Get()) {
flags |= ContentClient::PAINT_ASYNC;
}
return flags;
}
void ClientPaintedLayer::RenderLayerWithReadback(ReadbackProcessor* aReadback) {
AUTO_PROFILER_LABEL("ClientPaintedLayer::RenderLayerWithReadback", GRAPHICS);
NS_ASSERTION(ClientManager()->InDrawing(), "Can only draw in drawing phase");
RenderMaskLayers(this);
if (!EnsureContentClient()) {
return;
}
nsTArray<ReadbackProcessor::Update> readbackUpdates;
nsIntRegion readbackRegion;
if (aReadback && UsedForReadback()) {
aReadback->GetPaintedLayerUpdates(this, &readbackUpdates);
}
uint32_t flags = GetPaintFlags(aReadback);
PaintState state = mContentClient->BeginPaint(this, flags);
if (!UpdatePaintRegion(state)) {
mContentClient->EndPaint(state, nullptr);
FinishPaintState(state);
return;
}
bool didUpdate = false;
RotatedBuffer::DrawIterator iter;
while (DrawTarget* target =
mContentClient->BorrowDrawTargetForPainting(state, &iter)) {
SetAntialiasingFlags(this, target);
RefPtr<gfxContext> ctx =
gfxContext::CreatePreservingTransformOrNull(target);
MOZ_ASSERT(ctx); // already checked the target above
if (!gfxEnv::SkipRasterization()) {
if (!target->IsCaptureDT()) {
target->ClearRect(Rect());
if (target->IsValid()) {
ClientManager()->GetPaintedLayerCallback()(
this, ctx, iter.mDrawRegion, iter.mDrawRegion, state.mClip,
state.mRegionToInvalidate,
ClientManager()->GetPaintedLayerCallbackData());
}
} else {
ClientManager()->GetPaintedLayerCallback()(
this, ctx, iter.mDrawRegion, iter.mDrawRegion, state.mClip,
state.mRegionToInvalidate,
ClientManager()->GetPaintedLayerCallbackData());
}
}
ctx = nullptr;
mContentClient->ReturnDrawTarget(target);
didUpdate = true;
}
mContentClient->EndPaint(state, &readbackUpdates);
FinishPaintState(state);
if (didUpdate) {
UpdateContentClient(state);
}
}
already_AddRefed<PaintedLayer> ClientLayerManager::CreatePaintedLayer() {
return CreatePaintedLayerWithHint(NONE);
}
already_AddRefed<PaintedLayer> ClientLayerManager::CreatePaintedLayerWithHint(
PaintedLayerCreationHint aHint) {
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
if (gfxPlatform::GetPlatform()->UsesTiling()) {
RefPtr<ClientTiledPaintedLayer> layer =
new ClientTiledPaintedLayer(this, aHint);
CREATE_SHADOW(Painted);
return layer.forget();
} else {
RefPtr<ClientPaintedLayer> layer = new ClientPaintedLayer(this, aHint);
CREATE_SHADOW(Painted);
return layer.forget();
}
}
void ClientPaintedLayer::PrintInfo(std::stringstream& aStream,
const char* aPrefix) {
PaintedLayer::PrintInfo(aStream, aPrefix);
if (mContentClient) {
aStream << "\n";
nsAutoCString pfx(aPrefix);
pfx += " ";
mContentClient->PrintInfo(aStream, pfx.get());
}
}
} // namespace layers
} // namespace mozilla
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