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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 "BasicPaintedLayer.h"
#include <stdint.h> // for uint32_t
#include "GeckoProfiler.h" // for AUTO_PROFILER_LABEL
#include "ReadbackLayer.h" // for ReadbackLayer, ReadbackSink
#include "ReadbackProcessor.h" // for ReadbackProcessor::Update, etc
#include "RenderTrace.h" // for RenderTraceInvalidateEnd, etc
#include "BasicLayersImpl.h" // for AutoMaskData, etc
#include "gfxContext.h" // for gfxContext, etc
#include "gfxRect.h" // for gfxRect
#include "gfxUtils.h" // for gfxUtils
#include "mozilla/gfx/2D.h" // for DrawTarget
#include "mozilla/gfx/BaseRect.h" // for BaseRect
#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 "nsCOMPtr.h" // for already_AddRefed
#include "nsISupportsImpl.h" // for gfxContext::Release, etc
#include "nsPoint.h" // for nsIntPoint
#include "nsRect.h" // for mozilla::gfx::IntRect
#include "nsTArray.h" // for nsTArray, nsTArray_Impl
#include "AutoMaskData.h"
#include "gfx2DGlue.h"
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
static nsIntRegion IntersectWithClip(const nsIntRegion& aRegion,
gfxContext* aContext) {
gfxRect clip = aContext->GetClipExtents();
nsIntRegion result;
result.And(aRegion, IntRect::RoundOut(clip.X(), clip.Y(), clip.Width(),
clip.Height()));
return result;
}
void BasicPaintedLayer::PaintThebes(
gfxContext* aContext, Layer* aMaskLayer,
LayerManager::DrawPaintedLayerCallback aCallback, void* aCallbackData) {
AUTO_PROFILER_LABEL("BasicPaintedLayer::PaintThebes", GRAPHICS);
NS_ASSERTION(BasicManager()->InDrawing(), "Can only draw in drawing phase");
float opacity = GetEffectiveOpacity();
CompositionOp effectiveOperator = GetEffectiveOperator(this);
if (!BasicManager()->IsRetained()) {
ClearValidRegion();
mContentClient->Clear();
nsIntRegion toDraw =
IntersectWithClip(GetLocalVisibleRegion().ToUnknownRegion(), aContext);
RenderTraceInvalidateStart(this, "FFFF00", toDraw.GetBounds());
if (!toDraw.IsEmpty() && !IsHidden()) {
if (!aCallback) {
BasicManager()->SetTransactionIncomplete();
return;
}
aContext->Save();
bool needsGroup = opacity != 1.0 ||
effectiveOperator != CompositionOp::OP_OVER ||
aMaskLayer;
RefPtr<gfxContext> context = nullptr;
BasicLayerManager::PushedGroup group;
bool availableGroup = false;
if (needsGroup) {
availableGroup =
BasicManager()->PushGroupForLayer(aContext, this, toDraw, group);
if (availableGroup) {
context = group.mGroupTarget;
}
} else {
context = aContext;
}
if (context) {
DrawTarget* target = context->GetDrawTarget();
bool oldAA = target->GetPermitSubpixelAA();
SetAntialiasingFlags(this, target);
aCallback(this, context, toDraw, toDraw, DrawRegionClip::NONE,
nsIntRegion(), aCallbackData);
target->SetPermitSubpixelAA(oldAA);
}
if (needsGroup && availableGroup) {
BasicManager()->PopGroupForLayer(group);
}
aContext->Restore();
}
RenderTraceInvalidateEnd(this, "FFFF00");
return;
}
if (BasicManager()->IsTransactionIncomplete()) return;
gfxRect clipExtents;
clipExtents = aContext->GetClipExtents();
// Pull out the mask surface and transform here, because the mask
// is internal to basic layers
AutoMoz2DMaskData mask;
SourceSurface* maskSurface = nullptr;
Matrix maskTransform;
if (GetMaskData(aMaskLayer, aContext->GetDeviceOffset(), &mask)) {
maskSurface = mask.GetSurface();
maskTransform = mask.GetTransform();
}
if (!IsHidden() && !clipExtents.IsEmpty()) {
mContentClient->DrawTo(this, aContext->GetDrawTarget(), opacity,
effectiveOperator, maskSurface, &maskTransform);
}
}
void BasicPaintedLayer::Validate(
LayerManager::DrawPaintedLayerCallback aCallback, void* aCallbackData,
ReadbackProcessor* aReadback) {
if (!mContentClient) {
// This client will have a null Forwarder, which means it will not have
// a ContentHost on the other side.
mContentClient = new ContentClientBasic(mBackend);
}
if (!BasicManager()->IsRetained()) {
return;
}
nsTArray<ReadbackProcessor::Update> readbackUpdates;
if (aReadback && UsedForReadback()) {
aReadback->GetPaintedLayerUpdates(this, &readbackUpdates);
}
uint32_t flags = 0;
#ifndef MOZ_WIDGET_ANDROID
if (BasicManager()->CompositorMightResample()) {
flags |= ContentClient::PAINT_WILL_RESAMPLE;
}
if (!(flags & ContentClient::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= ContentClient::PAINT_WILL_RESAMPLE;
}
}
#endif
if (mDrawAtomically) {
flags |= ContentClient::PAINT_NO_ROTATION;
}
PaintState state = mContentClient->BeginPaint(this, flags);
SubtractFromValidRegion(state.mRegionToInvalidate);
DrawTarget* target = mContentClient->BorrowDrawTargetForPainting(state);
if (target && target->IsValid()) {
// 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)
state.mRegionToInvalidate.And(state.mRegionToInvalidate,
GetLocalVisibleRegion().ToUnknownRegion());
SetAntialiasingFlags(this, target);
RenderTraceInvalidateStart(this, "FFFF00", state.mRegionToDraw.GetBounds());
RefPtr<gfxContext> ctx =
gfxContext::CreatePreservingTransformOrNull(target);
MOZ_ASSERT(ctx); // already checked the target above
PaintBuffer(ctx, state.mRegionToDraw, state.mRegionToDraw,
state.mRegionToInvalidate, state.mClip, aCallback,
aCallbackData);
MOZ_LAYERS_LOG_IF_SHADOWABLE(this,
("Layer::Mutated(%p) PaintThebes", this));
Mutated();
ctx = nullptr;
mContentClient->ReturnDrawTarget(target);
target = nullptr;
RenderTraceInvalidateEnd(this, "FFFF00");
} else {
if (target) {
mContentClient->ReturnDrawTarget(target);
target = nullptr;
}
// It's possible that state.mRegionToInvalidate is nonempty here,
// if we are shrinking the valid region to nothing. So use mRegionToDraw
// instead.
NS_WARNING_ASSERTION(
state.mRegionToDraw.IsEmpty(),
"No context when we have something to draw, resource exhaustion?");
}
for (uint32_t i = 0; i < readbackUpdates.Length(); ++i) {
ReadbackProcessor::Update& update = readbackUpdates[i];
nsIntPoint offset = update.mLayer->GetBackgroundLayerOffset();
RefPtr<DrawTarget> dt = update.mLayer->GetSink()->BeginUpdate(
update.mUpdateRect + offset, update.mSequenceCounter);
if (dt) {
NS_ASSERTION(GetEffectiveOpacity() == 1.0,
"Should only read back opaque layers");
NS_ASSERTION(!GetMaskLayer(),
"Should only read back layers without masks");
dt->SetTransform(dt->GetTransform().PreTranslate(offset.x, offset.y));
mContentClient->DrawTo(this, dt, 1.0, CompositionOp::OP_OVER, nullptr,
nullptr);
update.mLayer->GetSink()->EndUpdate(update.mUpdateRect + offset);
}
}
}
already_AddRefed<PaintedLayer> BasicLayerManager::CreatePaintedLayer() {
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
BackendType backend = gfxPlatform::GetPlatform()->GetDefaultContentBackend();
if (mDefaultTarget) {
backend = mDefaultTarget->GetDrawTarget()->GetBackendType();
} else if (mType == BLM_WIDGET) {
backend = gfxPlatform::GetPlatform()->GetContentBackendFor(
LayersBackend::LAYERS_BASIC);
}
RefPtr<PaintedLayer> layer = new BasicPaintedLayer(this, backend);
return layer.forget();
}
} // namespace layers
} // namespace mozilla
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