Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Branch: master
Fetching contributors…

Cannot retrieve contributors at this time

3645 lines (3152 sloc) 117.723 kB
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 "mozilla/Attributes.h"
#include "gfxSharedImageSurface.h"
#include "mozilla/layers/PLayerChild.h"
#include "mozilla/layers/PLayersChild.h"
#include "mozilla/layers/PLayersParent.h"
#include "mozilla/gfx/2D.h"
#include "ipc/ShadowLayerChild.h"
#include "BasicLayers.h"
#include "BasicImplData.h"
#include "BasicTiledThebesLayer.h"
#include "ImageLayers.h"
#include "RenderTrace.h"
#include "prprf.h"
#include "nsTArray.h"
#include "nsGUIEvent.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "gfxPattern.h"
#include "gfxPlatform.h"
#include "gfxUtils.h"
#include "ThebesLayerBuffer.h"
#include "nsIWidget.h"
#include "ReadbackProcessor.h"
#ifdef MOZ_X11
#include "gfxXlibSurface.h"
#endif
#include "sampler.h"
#include "GLContext.h"
#define PIXMAN_DONT_DEFINE_STDINT
#include "pixman.h"
using namespace mozilla::gfx;
namespace mozilla {
namespace layers {
class BasicContainerLayer;
class ShadowableLayer;
class AutoSetOperator {
public:
AutoSetOperator(gfxContext* aContext, gfxContext::GraphicsOperator aOperator) {
if (aOperator != gfxContext::OPERATOR_OVER) {
aContext->SetOperator(aOperator);
mContext = aContext;
}
}
~AutoSetOperator() {
if (mContext) {
mContext->SetOperator(gfxContext::OPERATOR_OVER);
}
}
private:
nsRefPtr<gfxContext> mContext;
};
static BasicImplData*
ToData(Layer* aLayer)
{
return static_cast<BasicImplData*>(aLayer->ImplData());
}
template<class Container>
static void ContainerInsertAfter(Layer* aChild, Layer* aAfter, Container* aContainer);
template<class Container>
static void ContainerRemoveChild(Layer* aChild, Container* aContainer);
/*
* Extract a mask surface for a mask layer
* Returns a surface for the mask layer if a mask layer is present and has a
* valid surface and transform; nsnull otherwise.
* The transform for the layer will be put in aMaskTransform
*/
already_AddRefed<gfxASurface>
GetMaskSurfaceAndTransform(Layer* aMaskLayer, gfxMatrix* aMaskTransform)
{
if (aMaskLayer) {
nsRefPtr<gfxASurface> maskSurface =
static_cast<BasicImplData*>(aMaskLayer->ImplData())->GetAsSurface();
if (maskSurface) {
bool maskIs2D =
aMaskLayer->GetEffectiveTransform().CanDraw2D(aMaskTransform);
NS_ASSERTION(maskIs2D, "How did we end up with a 3D transform here?!");
return maskSurface.forget();
}
}
return nsnull;
}
// Paint the current source to a context using a mask, if present
void
PaintWithMask(gfxContext* aContext, float aOpacity, Layer* aMaskLayer)
{
gfxMatrix maskTransform;
if (nsRefPtr<gfxASurface> maskSurface =
GetMaskSurfaceAndTransform(aMaskLayer, &maskTransform)) {
if (aOpacity < 1.0) {
aContext->PushGroup(gfxASurface::CONTENT_COLOR_ALPHA);
aContext->Paint(aOpacity);
aContext->PopGroupToSource();
}
aContext->SetMatrix(maskTransform);
aContext->Mask(maskSurface);
return;
}
// if there is no mask, just paint normally
aContext->Paint(aOpacity);
}
// Fill the current path with the current source, using a
// mask and opacity, if present
void
FillWithMask(gfxContext* aContext, float aOpacity, Layer* aMaskLayer)
{
gfxMatrix maskTransform;
if (nsRefPtr<gfxASurface> maskSurface =
GetMaskSurfaceAndTransform(aMaskLayer, &maskTransform)) {
if (aOpacity < 1.0) {
aContext->PushGroup(gfxASurface::CONTENT_COLOR_ALPHA);
aContext->FillWithOpacity(aOpacity);
aContext->PopGroupToSource();
aContext->SetMatrix(maskTransform);
aContext->Mask(maskSurface);
} else {
aContext->Save();
aContext->Clip();
aContext->SetMatrix(maskTransform);
aContext->Mask(maskSurface);
aContext->NewPath();
aContext->Restore();
}
return;
}
// if there is no mask, just fill normally
aContext->FillWithOpacity(aOpacity);
}
class BasicContainerLayer : public ContainerLayer, public BasicImplData {
template<class Container>
friend void ContainerInsertAfter(Layer* aChild, Layer* aAfter, Container* aContainer);
template<class Container>
friend void ContainerRemoveChild(Layer* aChild, Container* aContainer);
public:
BasicContainerLayer(BasicLayerManager* aManager) :
ContainerLayer(aManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicContainerLayer);
mSupportsComponentAlphaChildren = true;
}
virtual ~BasicContainerLayer();
virtual void SetVisibleRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ContainerLayer::SetVisibleRegion(aRegion);
}
virtual void InsertAfter(Layer* aChild, Layer* aAfter)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ContainerInsertAfter(aChild, aAfter, this);
}
virtual void RemoveChild(Layer* aChild)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ContainerRemoveChild(aChild, this);
}
virtual void ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
{
// We push groups for container layers if we need to, which always
// are aligned in device space, so it doesn't really matter how we snap
// containers.
gfxMatrix residual;
gfx3DMatrix idealTransform = GetLocalTransform()*aTransformToSurface;
idealTransform.ProjectTo2D();
if (!idealTransform.CanDraw2D()) {
mEffectiveTransform = idealTransform;
ComputeEffectiveTransformsForChildren(gfx3DMatrix());
ComputeEffectiveTransformForMaskLayer(gfx3DMatrix());
mUseIntermediateSurface = true;
return;
}
mEffectiveTransform = SnapTransform(idealTransform, gfxRect(0, 0, 0, 0), &residual);
// We always pass the ideal matrix down to our children, so there is no
// need to apply any compensation using the residual from SnapTransform.
ComputeEffectiveTransformsForChildren(idealTransform);
ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
/* If we have a single child, it can just inherit our opacity,
* otherwise we need a PushGroup and we need to mark ourselves as using
* an intermediate surface so our children don't inherit our opacity
* via GetEffectiveOpacity.
* Having a mask layer always forces our own push group
*/
mUseIntermediateSurface = GetMaskLayer() ||
(GetEffectiveOpacity() != 1.0 && HasMultipleChildren());
}
/**
* Returns true when:
* a) no (non-hidden) childrens' visible areas overlap in
* (aInRect intersected with this layer's visible region).
* b) the (non-hidden) childrens' visible areas cover
* (aInRect intersected with this layer's visible region).
* c) this layer and all (non-hidden) children have transforms that are translations
* by integers.
* aInRect is in the root coordinate system.
* Child layers with opacity do not contribute to the covered area in check b).
* This method can be conservative; it's OK to return false under any
* circumstances.
*/
bool ChildrenPartitionVisibleRegion(const nsIntRect& aInRect);
void ForceIntermediateSurface() { mUseIntermediateSurface = true; }
protected:
BasicLayerManager* BasicManager()
{
return static_cast<BasicLayerManager*>(mManager);
}
};
BasicContainerLayer::~BasicContainerLayer()
{
while (mFirstChild) {
ContainerRemoveChild(mFirstChild, this);
}
MOZ_COUNT_DTOR(BasicContainerLayer);
}
bool
BasicContainerLayer::ChildrenPartitionVisibleRegion(const nsIntRect& aInRect)
{
gfxMatrix transform;
if (!GetEffectiveTransform().CanDraw2D(&transform) ||
transform.HasNonIntegerTranslation())
return false;
nsIntPoint offset(PRInt32(transform.x0), PRInt32(transform.y0));
nsIntRect rect = aInRect.Intersect(GetEffectiveVisibleRegion().GetBounds() + offset);
nsIntRegion covered;
for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) {
if (ToData(l)->IsHidden())
continue;
gfxMatrix childTransform;
if (!l->GetEffectiveTransform().CanDraw2D(&childTransform) ||
childTransform.HasNonIntegerTranslation() ||
l->GetEffectiveOpacity() != 1.0)
return false;
nsIntRegion childRegion = l->GetEffectiveVisibleRegion();
childRegion.MoveBy(PRInt32(childTransform.x0), PRInt32(childTransform.y0));
childRegion.And(childRegion, rect);
if (l->GetClipRect()) {
childRegion.And(childRegion, *l->GetClipRect() + offset);
}
nsIntRegion intersection;
intersection.And(covered, childRegion);
if (!intersection.IsEmpty())
return false;
covered.Or(covered, childRegion);
}
return covered.Contains(rect);
}
template<class Container>
static void
ContainerInsertAfter(Layer* aChild, Layer* aAfter, Container* aContainer)
{
NS_ASSERTION(aChild->Manager() == aContainer->Manager(),
"Child has wrong manager");
NS_ASSERTION(!aChild->GetParent(),
"aChild already in the tree");
NS_ASSERTION(!aChild->GetNextSibling() && !aChild->GetPrevSibling(),
"aChild already has siblings?");
NS_ASSERTION(!aAfter ||
(aAfter->Manager() == aContainer->Manager() &&
aAfter->GetParent() == aContainer),
"aAfter is not our child");
aChild->SetParent(aContainer);
if (aAfter == aContainer->mLastChild) {
aContainer->mLastChild = aChild;
}
if (!aAfter) {
aChild->SetNextSibling(aContainer->mFirstChild);
if (aContainer->mFirstChild) {
aContainer->mFirstChild->SetPrevSibling(aChild);
}
aContainer->mFirstChild = aChild;
NS_ADDREF(aChild);
aContainer->DidInsertChild(aChild);
return;
}
Layer* next = aAfter->GetNextSibling();
aChild->SetNextSibling(next);
aChild->SetPrevSibling(aAfter);
if (next) {
next->SetPrevSibling(aChild);
}
aAfter->SetNextSibling(aChild);
NS_ADDREF(aChild);
aContainer->DidInsertChild(aChild);
}
template<class Container>
static void
ContainerRemoveChild(Layer* aChild, Container* aContainer)
{
NS_ASSERTION(aChild->Manager() == aContainer->Manager(),
"Child has wrong manager");
NS_ASSERTION(aChild->GetParent() == aContainer,
"aChild not our child");
Layer* prev = aChild->GetPrevSibling();
Layer* next = aChild->GetNextSibling();
if (prev) {
prev->SetNextSibling(next);
} else {
aContainer->mFirstChild = next;
}
if (next) {
next->SetPrevSibling(prev);
} else {
aContainer->mLastChild = prev;
}
aChild->SetNextSibling(nsnull);
aChild->SetPrevSibling(nsnull);
aChild->SetParent(nsnull);
aContainer->DidRemoveChild(aChild);
NS_RELEASE(aChild);
}
class BasicThebesLayer;
class BasicThebesLayerBuffer : public ThebesLayerBuffer {
typedef ThebesLayerBuffer Base;
public:
BasicThebesLayerBuffer(BasicThebesLayer* aLayer)
: Base(ContainsVisibleBounds)
, mLayer(aLayer)
{
}
virtual ~BasicThebesLayerBuffer()
{}
using Base::BufferRect;
using Base::BufferRotation;
/**
* Complete the drawing operation. The region to draw must have been
* drawn before this is called. The contents of the buffer are drawn
* to aTarget.
*/
void DrawTo(ThebesLayer* aLayer, gfxContext* aTarget, float aOpacity,
Layer* aMaskLayer);
virtual already_AddRefed<gfxASurface>
CreateBuffer(ContentType aType, const nsIntSize& aSize, PRUint32 aFlags);
/**
* Swap out the old backing buffer for |aBuffer| and attributes.
*/
void SetBackingBuffer(gfxASurface* aBuffer,
const nsIntRect& aRect, const nsIntPoint& aRotation)
{
gfxIntSize prevSize = gfxIntSize(BufferRect().width, BufferRect().height);
gfxIntSize newSize = aBuffer->GetSize();
NS_ABORT_IF_FALSE(newSize == prevSize,
"Swapped-in buffer size doesn't match old buffer's!");
nsRefPtr<gfxASurface> oldBuffer;
oldBuffer = SetBuffer(aBuffer, aRect, aRotation);
}
void SetBackingBufferAndUpdateFrom(
gfxASurface* aBuffer,
gfxASurface* aSource, const nsIntRect& aRect, const nsIntPoint& aRotation,
const nsIntRegion& aUpdateRegion);
private:
BasicThebesLayerBuffer(gfxASurface* aBuffer,
const nsIntRect& aRect, const nsIntPoint& aRotation)
// The size policy doesn't really matter here; this constructor is
// intended to be used for creating temporaries
: ThebesLayerBuffer(ContainsVisibleBounds)
{
SetBuffer(aBuffer, aRect, aRotation);
}
BasicThebesLayer* mLayer;
};
class BasicThebesLayer : public ThebesLayer, public BasicImplData {
public:
typedef BasicThebesLayerBuffer Buffer;
BasicThebesLayer(BasicLayerManager* aLayerManager) :
ThebesLayer(aLayerManager, static_cast<BasicImplData*>(this)),
mBuffer(this)
{
MOZ_COUNT_CTOR(BasicThebesLayer);
}
virtual ~BasicThebesLayer()
{
MOZ_COUNT_DTOR(BasicThebesLayer);
}
virtual void SetVisibleRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ThebesLayer::SetVisibleRegion(aRegion);
}
virtual void InvalidateRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
mValidRegion.Sub(mValidRegion, aRegion);
}
virtual void PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback);
virtual void ClearCachedResources() { mBuffer.Clear(); mValidRegion.SetEmpty(); }
virtual already_AddRefed<gfxASurface>
CreateBuffer(Buffer::ContentType aType, const nsIntSize& aSize)
{
nsRefPtr<gfxASurface> referenceSurface = mBuffer.GetBuffer();
if (!referenceSurface) {
gfxContext* defaultTarget = BasicManager()->GetDefaultTarget();
if (defaultTarget) {
referenceSurface = defaultTarget->CurrentSurface();
} else {
nsIWidget* widget = BasicManager()->GetRetainerWidget();
if (widget) {
referenceSurface = widget->GetThebesSurface();
} else {
referenceSurface = BasicManager()->GetTarget()->CurrentSurface();
}
}
}
return referenceSurface->CreateSimilarSurface(
aType, gfxIntSize(aSize.width, aSize.height));
}
virtual void ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
{
if (!BasicManager()->IsRetained()) {
// Don't do any snapping of our transform, since we're just going to
// draw straight through without intermediate buffers.
mEffectiveTransform = GetLocalTransform()*aTransformToSurface;
if (gfxPoint(0,0) != mResidualTranslation) {
mResidualTranslation = gfxPoint(0,0);
mValidRegion.SetEmpty();
}
ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
return;
}
ThebesLayer::ComputeEffectiveTransforms(aTransformToSurface);
}
// Sync front/back buffers content
virtual void SyncFrontBufferToBackBuffer() {}
protected:
BasicLayerManager* BasicManager()
{
return static_cast<BasicLayerManager*>(mManager);
}
virtual void
PaintBuffer(gfxContext* aContext,
const nsIntRegion& aRegionToDraw,
const nsIntRegion& aExtendedRegionToDraw,
const nsIntRegion& aRegionToInvalidate,
bool aDidSelfCopy,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData)
{
if (!aCallback) {
BasicManager()->SetTransactionIncomplete();
return;
}
aCallback(this, aContext, aExtendedRegionToDraw, aRegionToInvalidate,
aCallbackData);
// Everything that's visible has been validated. Do this instead of just
// OR-ing with aRegionToDraw, since that can lead to a very complex region
// here (OR doesn't automatically simplify to the simplest possible
// representation of a region.)
nsIntRegion tmp;
tmp.Or(mVisibleRegion, aExtendedRegionToDraw);
mValidRegion.Or(mValidRegion, tmp);
}
Buffer mBuffer;
};
/**
* Clips to the smallest device-pixel-aligned rectangle containing aRect
* in user space.
* Returns true if the clip is "perfect", i.e. we actually clipped exactly to
* aRect.
*/
static bool
ClipToContain(gfxContext* aContext, const nsIntRect& aRect)
{
gfxRect userRect(aRect.x, aRect.y, aRect.width, aRect.height);
gfxRect deviceRect = aContext->UserToDevice(userRect);
deviceRect.RoundOut();
gfxMatrix currentMatrix = aContext->CurrentMatrix();
aContext->IdentityMatrix();
aContext->NewPath();
aContext->Rectangle(deviceRect);
aContext->Clip();
aContext->SetMatrix(currentMatrix);
return aContext->DeviceToUser(deviceRect).IsEqualInterior(userRect);
}
static nsIntRegion
IntersectWithClip(const nsIntRegion& aRegion, gfxContext* aContext)
{
gfxRect clip = aContext->GetClipExtents();
clip.RoundOut();
nsIntRect r(clip.X(), clip.Y(), clip.Width(), clip.Height());
nsIntRegion result;
result.And(aRegion, r);
return result;
}
static void
SetAntialiasingFlags(Layer* aLayer, gfxContext* aTarget)
{
if (!aTarget->IsCairo()) {
RefPtr<DrawTarget> dt = aTarget->GetDrawTarget();
if (dt->GetFormat() != FORMAT_B8G8R8A8) {
return;
}
const nsIntRect& bounds = aLayer->GetVisibleRegion().GetBounds();
Rect transformedBounds = dt->GetTransform().TransformBounds(Rect(Float(bounds.x), Float(bounds.y),
Float(bounds.width), Float(bounds.height)));
transformedBounds.RoundOut();
IntRect intTransformedBounds;
transformedBounds.ToIntRect(&intTransformedBounds);
dt->SetPermitSubpixelAA(!(aLayer->GetContentFlags() & Layer::CONTENT_COMPONENT_ALPHA) ||
dt->GetOpaqueRect().Contains(intTransformedBounds));
} else {
nsRefPtr<gfxASurface> surface = aTarget->CurrentSurface();
if (surface->GetContentType() != gfxASurface::CONTENT_COLOR_ALPHA) {
// Destination doesn't have alpha channel; no need to set any special flags
return;
}
const nsIntRect& bounds = aLayer->GetVisibleRegion().GetBounds();
surface->SetSubpixelAntialiasingEnabled(
!(aLayer->GetContentFlags() & Layer::CONTENT_COMPONENT_ALPHA) ||
surface->GetOpaqueRect().Contains(
aTarget->UserToDevice(gfxRect(bounds.x, bounds.y, bounds.width, bounds.height))));
}
}
already_AddRefed<gfxContext>
BasicLayerManager::PushGroupForLayer(gfxContext* aContext, Layer* aLayer,
const nsIntRegion& aRegion,
bool* aNeedsClipToVisibleRegion)
{
// If we need to call PushGroup, we should clip to the smallest possible
// area first to minimize the size of the temporary surface.
bool didCompleteClip = ClipToContain(aContext, aRegion.GetBounds());
nsRefPtr<gfxContext> result;
if (aLayer->CanUseOpaqueSurface() &&
((didCompleteClip && aRegion.GetNumRects() == 1) ||
!aContext->CurrentMatrix().HasNonIntegerTranslation())) {
// If the layer is opaque in its visible region we can push a CONTENT_COLOR
// group. We need to make sure that only pixels inside the layer's visible
// region are copied back to the destination. Remember if we've already
// clipped precisely to the visible region.
*aNeedsClipToVisibleRegion = !didCompleteClip || aRegion.GetNumRects() > 1;
result = PushGroupWithCachedSurface(aContext, gfxASurface::CONTENT_COLOR);
} else {
*aNeedsClipToVisibleRegion = false;
result = aContext;
aContext->PushGroupAndCopyBackground(gfxASurface::CONTENT_COLOR_ALPHA);
}
return result.forget();
}
void
BasicThebesLayer::PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback)
{
SAMPLE_LABEL("BasicThebesLayer", "PaintThebes");
NS_ASSERTION(BasicManager()->InDrawing(),
"Can only draw in drawing phase");
nsRefPtr<gfxASurface> targetSurface = aContext->CurrentSurface();
nsTArray<ReadbackProcessor::Update> readbackUpdates;
if (aReadback && UsedForReadback()) {
aReadback->GetThebesLayerUpdates(this, &readbackUpdates);
}
SyncFrontBufferToBackBuffer();
bool canUseOpaqueSurface = CanUseOpaqueSurface();
Buffer::ContentType contentType =
canUseOpaqueSurface ? gfxASurface::CONTENT_COLOR :
gfxASurface::CONTENT_COLOR_ALPHA;
float opacity = GetEffectiveOpacity();
if (!BasicManager()->IsRetained() ||
(!canUseOpaqueSurface &&
(mContentFlags & CONTENT_COMPONENT_ALPHA) &&
!MustRetainContent())) {
NS_ASSERTION(readbackUpdates.IsEmpty(), "Can't do readback for non-retained layer");
mValidRegion.SetEmpty();
mBuffer.Clear();
nsIntRegion toDraw = IntersectWithClip(GetEffectiveVisibleRegion(), aContext);
RenderTraceInvalidateStart(this, "FFFF00", toDraw.GetBounds());
if (!toDraw.IsEmpty() && !IsHidden()) {
if (!aCallback) {
BasicManager()->SetTransactionIncomplete();
return;
}
aContext->Save();
bool needsClipToVisibleRegion = GetClipToVisibleRegion();
bool needsGroup =
opacity != 1.0 || GetOperator() != gfxContext::OPERATOR_OVER || aMaskLayer;
nsRefPtr<gfxContext> groupContext;
if (needsGroup) {
groupContext =
BasicManager()->PushGroupForLayer(aContext, this, toDraw,
&needsClipToVisibleRegion);
if (GetOperator() != gfxContext::OPERATOR_OVER) {
needsClipToVisibleRegion = true;
}
} else {
groupContext = aContext;
}
SetAntialiasingFlags(this, groupContext);
aCallback(this, groupContext, toDraw, nsIntRegion(), aCallbackData);
if (needsGroup) {
BasicManager()->PopGroupToSourceWithCachedSurface(aContext, groupContext);
if (needsClipToVisibleRegion) {
gfxUtils::ClipToRegion(aContext, toDraw);
}
AutoSetOperator setOperator(aContext, GetOperator());
PaintWithMask(aContext, opacity, aMaskLayer);
}
aContext->Restore();
}
RenderTraceInvalidateEnd(this, "FFFF00");
return;
}
{
PRUint32 flags = 0;
#ifndef MOZ_GFX_OPTIMIZE_MOBILE
gfxMatrix transform;
if (!GetEffectiveTransform().CanDraw2D(&transform) ||
transform.HasNonIntegerTranslation()) {
flags |= ThebesLayerBuffer::PAINT_WILL_RESAMPLE;
}
#endif
if (mDrawAtomically) {
flags |= ThebesLayerBuffer::PAINT_NO_ROTATION;
}
Buffer::PaintState state =
mBuffer.BeginPaint(this, contentType, flags);
mValidRegion.Sub(mValidRegion, state.mRegionToInvalidate);
if (state.mContext) {
// 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,
GetEffectiveVisibleRegion());
nsIntRegion extendedDrawRegion = state.mRegionToDraw;
SetAntialiasingFlags(this, state.mContext);
RenderTraceInvalidateStart(this, "FFFF00", state.mRegionToDraw.GetBounds());
PaintBuffer(state.mContext,
state.mRegionToDraw, extendedDrawRegion, state.mRegionToInvalidate,
state.mDidSelfCopy,
aCallback, aCallbackData);
Mutated();
RenderTraceInvalidateEnd(this, "FFFF00");
} else {
// It's possible that state.mRegionToInvalidate is nonempty here,
// if we are shrinking the valid region to nothing. So use mRegionToDraw
// instead.
NS_WARN_IF_FALSE(state.mRegionToDraw.IsEmpty(),
"No context when we have something to draw; resource exhaustion?");
}
}
if (BasicManager()->IsTransactionIncomplete())
return;
gfxRect clipExtents;
clipExtents = aContext->GetClipExtents();
if (!IsHidden() && !clipExtents.IsEmpty()) {
AutoSetOperator setOperator(aContext, GetOperator());
mBuffer.DrawTo(this, aContext, opacity, aMaskLayer);
}
for (PRUint32 i = 0; i < readbackUpdates.Length(); ++i) {
ReadbackProcessor::Update& update = readbackUpdates[i];
nsIntPoint offset = update.mLayer->GetBackgroundLayerOffset();
nsRefPtr<gfxContext> ctx =
update.mLayer->GetSink()->BeginUpdate(update.mUpdateRect + offset,
update.mSequenceCounter);
if (ctx) {
NS_ASSERTION(opacity == 1.0, "Should only read back opaque layers");
ctx->Translate(gfxPoint(offset.x, offset.y));
mBuffer.DrawTo(this, ctx, 1.0, aMaskLayer);
update.mLayer->GetSink()->EndUpdate(ctx, update.mUpdateRect + offset);
}
}
}
static bool
IsClippingCheap(gfxContext* aTarget, const nsIntRegion& aRegion)
{
// Assume clipping is cheap if the context just has an integer
// translation, and the visible region is simple.
return !aTarget->CurrentMatrix().HasNonIntegerTranslation() &&
aRegion.GetNumRects() <= 1;
}
void
BasicThebesLayerBuffer::DrawTo(ThebesLayer* aLayer,
gfxContext* aTarget,
float aOpacity,
Layer* aMaskLayer)
{
aTarget->Save();
// If the entire buffer is valid, we can just draw the whole thing,
// no need to clip. But we'll still clip if clipping is cheap ---
// that might let us copy a smaller region of the buffer.
// Also clip to the visible region if we're told to.
if (!aLayer->GetValidRegion().Contains(BufferRect()) ||
(ToData(aLayer)->GetClipToVisibleRegion() &&
!aLayer->GetVisibleRegion().Contains(BufferRect())) ||
IsClippingCheap(aTarget, aLayer->GetEffectiveVisibleRegion())) {
// We don't want to draw invalid stuff, so we need to clip. Might as
// well clip to the smallest area possible --- the visible region.
// Bug 599189 if there is a non-integer-translation transform in aTarget,
// we might sample pixels outside GetEffectiveVisibleRegion(), which is wrong
// and may cause gray lines.
gfxUtils::ClipToRegionSnapped(aTarget, aLayer->GetEffectiveVisibleRegion());
}
// Pull out the mask surface and transform here, because the mask
// is internal to basic layers
gfxMatrix maskTransform;
if (nsRefPtr<gfxASurface> maskSurface =
GetMaskSurfaceAndTransform(aMaskLayer, &maskTransform)) {
DrawBufferWithRotation(aTarget, aOpacity, maskSurface, &maskTransform);
} else {
DrawBufferWithRotation(aTarget, aOpacity);
}
aTarget->Restore();
}
already_AddRefed<gfxASurface>
BasicThebesLayerBuffer::CreateBuffer(ContentType aType,
const nsIntSize& aSize, PRUint32 aFlags)
{
return mLayer->CreateBuffer(aType, aSize);
}
void
BasicThebesLayerBuffer::SetBackingBufferAndUpdateFrom(
gfxASurface* aBuffer,
gfxASurface* aSource, const nsIntRect& aRect, const nsIntPoint& aRotation,
const nsIntRegion& aUpdateRegion)
{
SetBackingBuffer(aBuffer, aRect, aRotation);
nsRefPtr<gfxContext> destCtx =
GetContextForQuadrantUpdate(aUpdateRegion.GetBounds());
destCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
if (IsClippingCheap(destCtx, aUpdateRegion)) {
gfxUtils::ClipToRegion(destCtx, aUpdateRegion);
}
BasicThebesLayerBuffer srcBuffer(aSource, aRect, aRotation);
srcBuffer.DrawBufferWithRotation(destCtx, 1.0);
}
class BasicImageLayer : public ImageLayer, public BasicImplData {
public:
BasicImageLayer(BasicLayerManager* aLayerManager) :
ImageLayer(aLayerManager, static_cast<BasicImplData*>(this)),
mSize(-1, -1)
{
MOZ_COUNT_CTOR(BasicImageLayer);
}
virtual ~BasicImageLayer()
{
MOZ_COUNT_DTOR(BasicImageLayer);
}
virtual void SetVisibleRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ImageLayer::SetVisibleRegion(aRegion);
}
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer);
static void PaintContext(gfxPattern* aPattern,
const nsIntRegion& aVisible,
float aOpacity,
gfxContext* aContext,
Layer* aMaskLayer);
virtual already_AddRefed<gfxASurface> GetAsSurface();
protected:
BasicLayerManager* BasicManager()
{
return static_cast<BasicLayerManager*>(mManager);
}
// only paints the image if aContext is non-null
already_AddRefed<gfxPattern>
GetAndPaintCurrentImage(gfxContext* aContext,
float aOpacity,
Layer* aMaskLayer);
gfxIntSize mSize;
};
void
BasicImageLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
if (IsHidden())
return;
nsRefPtr<gfxPattern> dontcare =
GetAndPaintCurrentImage(aContext, GetEffectiveOpacity(), aMaskLayer);
}
already_AddRefed<gfxPattern>
BasicImageLayer::GetAndPaintCurrentImage(gfxContext* aContext,
float aOpacity,
Layer* aMaskLayer)
{
if (!mContainer)
return nsnull;
mContainer->SetImageFactory(mManager->IsCompositingCheap() ? nsnull : BasicManager()->GetImageFactory());
nsRefPtr<gfxASurface> surface;
AutoLockImage autoLock(mContainer, getter_AddRefs(surface));
Image *image = autoLock.GetImage();
gfxIntSize size = mSize = autoLock.GetSize();
if (!surface || surface->CairoStatus()) {
return nsnull;
}
nsRefPtr<gfxPattern> pat = new gfxPattern(surface);
if (!pat) {
return nsnull;
}
pat->SetFilter(mFilter);
gfxIntSize sourceSize = surface->GetSize();
if (mScaleMode != SCALE_NONE) {
NS_ASSERTION(mScaleMode == SCALE_STRETCH,
"No other scalemodes than stretch and none supported yet.");
gfxMatrix mat = pat->GetMatrix();
mat.Scale(float(sourceSize.width) / mScaleToSize.width, float(sourceSize.height) / mScaleToSize.height);
pat->SetMatrix(mat);
size = mScaleToSize;
}
// The visible region can extend outside the image, so just draw
// within the image bounds.
if (aContext) {
AutoSetOperator setOperator(aContext, GetOperator());
PaintContext(pat,
nsIntRegion(nsIntRect(0, 0, size.width, size.height)),
aOpacity, aContext, aMaskLayer);
GetContainer()->NotifyPaintedImage(image);
}
return pat.forget();
}
/*static*/ void
BasicImageLayer::PaintContext(gfxPattern* aPattern,
const nsIntRegion& aVisible,
float aOpacity,
gfxContext* aContext,
Layer* aMaskLayer)
{
// Set PAD mode so that when the video is being scaled, we do not sample
// outside the bounds of the video image.
gfxPattern::GraphicsExtend extend = gfxPattern::EXTEND_PAD;
if (aContext->IsCairo()) {
// PAD is slow with X11 and Quartz surfaces, so prefer speed over correctness
// and use NONE.
nsRefPtr<gfxASurface> target = aContext->CurrentSurface();
gfxASurface::gfxSurfaceType type = target->GetType();
if (type == gfxASurface::SurfaceTypeXlib ||
type == gfxASurface::SurfaceTypeXcb ||
type == gfxASurface::SurfaceTypeQuartz) {
extend = gfxPattern::EXTEND_NONE;
}
}
aContext->NewPath();
// No need to snap here; our transform has already taken care of it.
// XXX true for arbitrary regions? Don't care yet though
gfxUtils::PathFromRegion(aContext, aVisible);
aPattern->SetExtend(extend);
aContext->SetPattern(aPattern);
FillWithMask(aContext, aOpacity, aMaskLayer);
// Reset extend mode for callers that need to reuse the pattern
aPattern->SetExtend(extend);
}
already_AddRefed<gfxASurface>
BasicImageLayer::GetAsSurface()
{
if (!mContainer) {
return nsnull;
}
gfxIntSize dontCare;
return mContainer->GetCurrentAsSurface(&dontCare);
}
class BasicColorLayer : public ColorLayer, public BasicImplData {
public:
BasicColorLayer(BasicLayerManager* aLayerManager) :
ColorLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicColorLayer);
}
virtual ~BasicColorLayer()
{
MOZ_COUNT_DTOR(BasicColorLayer);
}
virtual void SetVisibleRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ColorLayer::SetVisibleRegion(aRegion);
}
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer)
{
if (IsHidden())
return;
AutoSetOperator setOperator(aContext, GetOperator());
PaintColorTo(mColor, GetEffectiveOpacity(), aContext, aMaskLayer);
}
static void PaintColorTo(gfxRGBA aColor, float aOpacity,
gfxContext* aContext,
Layer* aMaskLayer);
protected:
BasicLayerManager* BasicManager()
{
return static_cast<BasicLayerManager*>(mManager);
}
};
/*static*/ void
BasicColorLayer::PaintColorTo(gfxRGBA aColor, float aOpacity,
gfxContext* aContext,
Layer* aMaskLayer)
{
aContext->SetColor(aColor);
PaintWithMask(aContext, aOpacity, aMaskLayer);
}
class BasicCanvasLayer : public CanvasLayer,
public BasicImplData
{
public:
BasicCanvasLayer(BasicLayerManager* aLayerManager) :
CanvasLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicCanvasLayer);
}
virtual ~BasicCanvasLayer()
{
MOZ_COUNT_DTOR(BasicCanvasLayer);
}
virtual void SetVisibleRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
CanvasLayer::SetVisibleRegion(aRegion);
}
virtual void Initialize(const Data& aData);
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer);
virtual void PaintWithOpacity(gfxContext* aContext,
float aOpacity,
Layer* aMaskLayer);
protected:
BasicLayerManager* BasicManager()
{
return static_cast<BasicLayerManager*>(mManager);
}
void UpdateSurface(gfxASurface* aDestSurface = nsnull, Layer* aMaskLayer = nsnull);
nsRefPtr<gfxASurface> mSurface;
nsRefPtr<mozilla::gl::GLContext> mGLContext;
mozilla::RefPtr<mozilla::gfx::DrawTarget> mDrawTarget;
PRUint32 mCanvasFramebuffer;
bool mGLBufferIsPremultiplied;
bool mNeedsYFlip;
nsRefPtr<gfxImageSurface> mCachedTempSurface;
gfxIntSize mCachedSize;
gfxImageFormat mCachedFormat;
gfxImageSurface* GetTempSurface(const gfxIntSize& aSize, const gfxImageFormat aFormat)
{
if (!mCachedTempSurface ||
aSize.width != mCachedSize.width ||
aSize.height != mCachedSize.height ||
aFormat != mCachedFormat)
{
mCachedTempSurface = new gfxImageSurface(aSize, aFormat);
mCachedSize = aSize;
mCachedFormat = aFormat;
}
return mCachedTempSurface;
}
void DiscardTempSurface()
{
mCachedTempSurface = nsnull;
}
};
void
BasicCanvasLayer::Initialize(const Data& aData)
{
NS_ASSERTION(mSurface == nsnull, "BasicCanvasLayer::Initialize called twice!");
if (aData.mSurface) {
mSurface = aData.mSurface;
NS_ASSERTION(aData.mGLContext == nsnull,
"CanvasLayer can't have both surface and GLContext");
mNeedsYFlip = false;
} else if (aData.mGLContext) {
NS_ASSERTION(aData.mGLContext->IsOffscreen(), "canvas gl context isn't offscreen");
mGLContext = aData.mGLContext;
mGLBufferIsPremultiplied = aData.mGLBufferIsPremultiplied;
mCanvasFramebuffer = mGLContext->GetOffscreenFBO();
mNeedsYFlip = true;
} else if (aData.mDrawTarget) {
mDrawTarget = aData.mDrawTarget;
mSurface = gfxPlatform::GetPlatform()->GetThebesSurfaceForDrawTarget(mDrawTarget);
mNeedsYFlip = false;
} else {
NS_ERROR("CanvasLayer created without mSurface, mDrawTarget or mGLContext?");
}
mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
}
void
BasicCanvasLayer::UpdateSurface(gfxASurface* aDestSurface, Layer* aMaskLayer)
{
if (mDrawTarget) {
mDrawTarget->Flush();
}
if (!mGLContext && aDestSurface) {
nsRefPtr<gfxContext> tmpCtx = new gfxContext(aDestSurface);
tmpCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
BasicCanvasLayer::PaintWithOpacity(tmpCtx, 1.0f, aMaskLayer);
return;
}
if (!mDirty)
return;
mDirty = false;
if (mGLContext) {
if (aDestSurface && aDestSurface->GetType() != gfxASurface::SurfaceTypeImage) {
NS_ASSERTION(aDestSurface->GetType() == gfxASurface::SurfaceTypeImage,
"Destination surface must be ImageSurface type");
return;
}
// We need to read from the GLContext
mGLContext->MakeCurrent();
#if defined (MOZ_X11) && defined (MOZ_EGL_XRENDER_COMPOSITE)
mGLContext->GuaranteeResolve();
gfxASurface* offscreenSurface = mGLContext->GetOffscreenPixmapSurface();
// XRender can only blend premuliplied alpha, so only allow xrender
// path if we have premultiplied alpha or opaque content.
if (offscreenSurface && (mGLBufferIsPremultiplied || (GetContentFlags() & CONTENT_OPAQUE))) {
mSurface = offscreenSurface;
mNeedsYFlip = false;
return;
}
#endif
nsRefPtr<gfxImageSurface> isurf;
if (aDestSurface) {
DiscardTempSurface();
isurf = static_cast<gfxImageSurface*>(aDestSurface);
} else {
nsIntSize size(mBounds.width, mBounds.height);
gfxImageFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? gfxASurface::ImageFormatRGB24
: gfxASurface::ImageFormatARGB32;
isurf = GetTempSurface(size, format);
}
if (!isurf || isurf->CairoStatus() != 0) {
return;
}
NS_ASSERTION(isurf->Stride() == mBounds.width * 4, "gfxImageSurface stride isn't what we expect!");
PRUint32 currentFramebuffer = 0;
mGLContext->fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, (GLint*)&currentFramebuffer);
// Make sure that we read pixels from the correct framebuffer, regardless
// of what's currently bound.
if (currentFramebuffer != mCanvasFramebuffer)
mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mCanvasFramebuffer);
mGLContext->ReadPixelsIntoImageSurface(0, 0,
mBounds.width, mBounds.height,
isurf);
// Put back the previous framebuffer binding.
if (currentFramebuffer != mCanvasFramebuffer)
mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, currentFramebuffer);
// If the underlying GLContext doesn't have a framebuffer into which
// premultiplied values were written, we have to do this ourselves here.
// Note that this is a WebGL attribute; GL itself has no knowledge of
// premultiplied or unpremultiplied alpha.
if (!mGLBufferIsPremultiplied)
gfxUtils::PremultiplyImageSurface(isurf);
// stick our surface into mSurface, so that the Paint() path is the same
if (!aDestSurface) {
mSurface = isurf;
}
}
}
void
BasicCanvasLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
if (IsHidden())
return;
UpdateSurface();
FireDidTransactionCallback();
PaintWithOpacity(aContext, GetEffectiveOpacity(), aMaskLayer);
}
void
BasicCanvasLayer::PaintWithOpacity(gfxContext* aContext,
float aOpacity,
Layer* aMaskLayer)
{
NS_ASSERTION(BasicManager()->InDrawing(),
"Can only draw in drawing phase");
if (!mSurface) {
NS_WARNING("No valid surface to draw!");
return;
}
nsRefPtr<gfxPattern> pat = new gfxPattern(mSurface);
pat->SetFilter(mFilter);
pat->SetExtend(gfxPattern::EXTEND_PAD);
gfxMatrix m;
if (mNeedsYFlip) {
m = aContext->CurrentMatrix();
aContext->Translate(gfxPoint(0.0, mBounds.height));
aContext->Scale(1.0, -1.0);
}
// If content opaque, then save off current operator and set to source.
// This ensures that alpha is not applied even if the source surface
// has an alpha channel
gfxContext::GraphicsOperator savedOp;
if (GetContentFlags() & CONTENT_OPAQUE) {
savedOp = aContext->CurrentOperator();
aContext->SetOperator(gfxContext::OPERATOR_SOURCE);
}
AutoSetOperator setOperator(aContext, GetOperator());
aContext->NewPath();
// No need to snap here; our transform is already set up to snap our rect
aContext->Rectangle(gfxRect(0, 0, mBounds.width, mBounds.height));
aContext->SetPattern(pat);
FillWithMask(aContext, aOpacity, aMaskLayer);
#if defined (MOZ_X11) && defined (MOZ_EGL_XRENDER_COMPOSITE)
if (mGLContext) {
// Wait for X to complete all operations before continuing
// Otherwise gl context could get cleared before X is done.
mGLContext->WaitNative();
}
#endif
// Restore surface operator
if (GetContentFlags() & CONTENT_OPAQUE) {
aContext->SetOperator(savedOp);
}
if (mNeedsYFlip) {
aContext->SetMatrix(m);
}
}
class BasicReadbackLayer : public ReadbackLayer,
public BasicImplData
{
public:
BasicReadbackLayer(BasicLayerManager* aLayerManager) :
ReadbackLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicReadbackLayer);
}
virtual ~BasicReadbackLayer()
{
MOZ_COUNT_DTOR(BasicReadbackLayer);
}
virtual void SetVisibleRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ReadbackLayer::SetVisibleRegion(aRegion);
}
protected:
BasicLayerManager* BasicManager()
{
return static_cast<BasicLayerManager*>(mManager);
}
};
static nsIntRect
ToOutsideIntRect(const gfxRect &aRect)
{
gfxRect r = aRect;
r.RoundOut();
return nsIntRect(r.X(), r.Y(), r.Width(), r.Height());
}
static nsIntRect
ToInsideIntRect(const gfxRect& aRect)
{
gfxRect r = aRect;
r.RoundIn();
return nsIntRect(r.X(), r.Y(), r.Width(), r.Height());
}
BasicLayerManager::BasicLayerManager(nsIWidget* aWidget) :
#ifdef DEBUG
mPhase(PHASE_NONE),
#endif
mWidget(aWidget)
, mDoubleBuffering(BUFFER_NONE), mUsingDefaultTarget(false)
, mCachedSurfaceInUse(false)
, mTransactionIncomplete(false)
{
MOZ_COUNT_CTOR(BasicLayerManager);
NS_ASSERTION(aWidget, "Must provide a widget");
}
BasicLayerManager::BasicLayerManager() :
#ifdef DEBUG
mPhase(PHASE_NONE),
#endif
mWidget(nsnull)
, mDoubleBuffering(BUFFER_NONE), mUsingDefaultTarget(false)
, mCachedSurfaceInUse(false)
, mTransactionIncomplete(false)
{
MOZ_COUNT_CTOR(BasicLayerManager);
}
BasicLayerManager::~BasicLayerManager()
{
NS_ASSERTION(!InTransaction(), "Died during transaction?");
ClearCachedResources();
mRoot = nsnull;
MOZ_COUNT_DTOR(BasicLayerManager);
}
void
BasicLayerManager::SetDefaultTarget(gfxContext* aContext,
BufferMode aDoubleBuffering)
{
NS_ASSERTION(!InTransaction(),
"Must set default target outside transaction");
mDefaultTarget = aContext;
mDoubleBuffering = aDoubleBuffering;
}
void
BasicLayerManager::BeginTransaction()
{
mUsingDefaultTarget = true;
BeginTransactionWithTarget(mDefaultTarget);
}
already_AddRefed<gfxContext>
BasicLayerManager::PushGroupWithCachedSurface(gfxContext *aTarget,
gfxASurface::gfxContentType aContent)
{
nsRefPtr<gfxContext> ctx;
// We can't cache Azure DrawTargets at this point.
if (!mCachedSurfaceInUse && aTarget->IsCairo()) {
gfxContextMatrixAutoSaveRestore saveMatrix(aTarget);
aTarget->IdentityMatrix();
nsRefPtr<gfxASurface> currentSurf = aTarget->CurrentSurface();
gfxRect clip = aTarget->GetClipExtents();
clip.RoundOut();
ctx = mCachedSurface.Get(aContent, clip, currentSurf);
if (ctx) {
mCachedSurfaceInUse = true;
/* Align our buffer for the original surface */
ctx->SetMatrix(saveMatrix.Matrix());
return ctx.forget();
}
}
ctx = aTarget;
ctx->PushGroup(aContent);
return ctx.forget();
}
void
BasicLayerManager::PopGroupToSourceWithCachedSurface(gfxContext *aTarget, gfxContext *aPushed)
{
if (!aTarget)
return;
nsRefPtr<gfxASurface> current = aPushed->CurrentSurface();
if (aTarget->IsCairo() && mCachedSurface.IsSurface(current)) {
gfxContextMatrixAutoSaveRestore saveMatrix(aTarget);
aTarget->IdentityMatrix();
aTarget->SetSource(current);
mCachedSurfaceInUse = false;
} else {
aTarget->PopGroupToSource();
}
}
void
BasicLayerManager::BeginTransactionWithTarget(gfxContext* aTarget)
{
#ifdef MOZ_LAYERS_HAVE_LOG
MOZ_LAYERS_LOG(("[----- BeginTransaction"));
Log();
#endif
NS_ASSERTION(!InTransaction(), "Nested transactions not allowed");
#ifdef DEBUG
mPhase = PHASE_CONSTRUCTION;
#endif
mTarget = aTarget;
}
static void
TransformIntRect(nsIntRect& aRect, const gfxMatrix& aMatrix,
nsIntRect (*aRoundMethod)(const gfxRect&))
{
gfxRect gr = gfxRect(aRect.x, aRect.y, aRect.width, aRect.height);
gr = aMatrix.TransformBounds(gr);
aRect = (*aRoundMethod)(gr);
}
/**
* This function assumes that GetEffectiveTransform transforms
* all layers to the same coordinate system (the "root coordinate system").
* It can't be used as is by accelerated layers because of intermediate surfaces.
* This must set the hidden flag to true or false on *all* layers in the subtree.
* It also sets the operator for all layers to "OVER", and call
* SetDrawAtomically(false).
* It clears mClipToVisibleRegion on all layers.
* @param aClipRect the cliprect, in the root coordinate system. We assume
* that any layer drawing is clipped to this rect. It is therefore not
* allowed to add to the opaque region outside that rect.
* @param aDirtyRect the dirty rect that will be painted, in the root
* coordinate system. Layers outside this rect should be hidden.
* @param aOpaqueRegion the opaque region covering aLayer, in the
* root coordinate system.
*/
enum {
ALLOW_OPAQUE = 0x01,
};
static void
MarkLayersHidden(Layer* aLayer, const nsIntRect& aClipRect,
const nsIntRect& aDirtyRect,
nsIntRegion& aOpaqueRegion,
PRUint32 aFlags)
{
nsIntRect newClipRect(aClipRect);
PRUint32 newFlags = aFlags;
// Allow aLayer or aLayer's descendants to cover underlying layers
// only if it's opaque.
if (aLayer->GetOpacity() != 1.0f) {
newFlags &= ~ALLOW_OPAQUE;
}
{
const nsIntRect* clipRect = aLayer->GetEffectiveClipRect();
if (clipRect) {
nsIntRect cr = *clipRect;
// clipRect is in the container's coordinate system. Get it into the
// global coordinate system.
if (aLayer->GetParent()) {
gfxMatrix tr;
if (aLayer->GetParent()->GetEffectiveTransform().CanDraw2D(&tr)) {
// Clip rect is applied after aLayer's transform, i.e., in the coordinate
// system of aLayer's parent.
TransformIntRect(cr, tr, ToInsideIntRect);
} else {
cr.SetRect(0, 0, 0, 0);
}
}
newClipRect.IntersectRect(newClipRect, cr);
}
}
BasicImplData* data = ToData(aLayer);
data->SetOperator(gfxContext::OPERATOR_OVER);
data->SetClipToVisibleRegion(false);
data->SetDrawAtomically(false);
if (!aLayer->AsContainerLayer()) {
gfxMatrix transform;
if (!aLayer->GetEffectiveTransform().CanDraw2D(&transform)) {
data->SetHidden(false);
return;
}
nsIntRegion region = aLayer->GetEffectiveVisibleRegion();
nsIntRect r = region.GetBounds();
TransformIntRect(r, transform, ToOutsideIntRect);
r.IntersectRect(r, aDirtyRect);
data->SetHidden(aOpaqueRegion.Contains(r));
// Allow aLayer to cover underlying layers only if aLayer's
// content is opaque
if ((aLayer->GetContentFlags() & Layer::CONTENT_OPAQUE) &&
(newFlags & ALLOW_OPAQUE)) {
nsIntRegionRectIterator it(region);
while (const nsIntRect* sr = it.Next()) {
r = *sr;
TransformIntRect(r, transform, ToInsideIntRect);
r.IntersectRect(r, newClipRect);
aOpaqueRegion.Or(aOpaqueRegion, r);
}
}
} else {
Layer* child = aLayer->GetLastChild();
bool allHidden = true;
for (; child; child = child->GetPrevSibling()) {
MarkLayersHidden(child, newClipRect, aDirtyRect, aOpaqueRegion, newFlags);
if (!ToData(child)->IsHidden()) {
allHidden = false;
}
}
data->SetHidden(allHidden);
}
}
/**
* This function assumes that GetEffectiveTransform transforms
* all layers to the same coordinate system (the "root coordinate system").
* MarkLayersHidden must be called before calling this.
* @param aVisibleRect the rectangle of aLayer that is visible (i.e. not
* clipped and in the dirty rect), in the root coordinate system.
*/
static void
ApplyDoubleBuffering(Layer* aLayer, const nsIntRect& aVisibleRect)
{
BasicImplData* data = ToData(aLayer);
if (data->IsHidden())
return;
nsIntRect newVisibleRect(aVisibleRect);
{
const nsIntRect* clipRect = aLayer->GetEffectiveClipRect();
if (clipRect) {
nsIntRect cr = *clipRect;
// clipRect is in the container's coordinate system. Get it into the
// global coordinate system.
if (aLayer->GetParent()) {
gfxMatrix tr;
if (aLayer->GetParent()->GetEffectiveTransform().CanDraw2D(&tr)) {
NS_ASSERTION(!tr.HasNonIntegerTranslation(),
"Parent can only have an integer translation");
cr += nsIntPoint(PRInt32(tr.x0), PRInt32(tr.y0));
} else {
NS_ERROR("Parent can only have an integer translation");
}
}
newVisibleRect.IntersectRect(newVisibleRect, cr);
}
}
BasicContainerLayer* container =
static_cast<BasicContainerLayer*>(aLayer->AsContainerLayer());
// Layers that act as their own backbuffers should be drawn to the destination
// using OPERATOR_SOURCE to ensure that alpha values in a transparent window
// are cleared. This can also be faster than OPERATOR_OVER.
if (!container) {
data->SetOperator(gfxContext::OPERATOR_SOURCE);
data->SetDrawAtomically(true);
} else {
if (container->UseIntermediateSurface() ||
!container->ChildrenPartitionVisibleRegion(newVisibleRect)) {
// We need to double-buffer this container.
data->SetOperator(gfxContext::OPERATOR_SOURCE);
container->ForceIntermediateSurface();
} else {
// Tell the children to clip to their visible regions so our assumption
// that they don't paint outside their visible regions is valid!
for (Layer* child = aLayer->GetFirstChild(); child;
child = child->GetNextSibling()) {
ToData(child)->SetClipToVisibleRegion(true);
ApplyDoubleBuffering(child, newVisibleRect);
}
}
}
}
void
BasicLayerManager::EndTransaction(DrawThebesLayerCallback aCallback,
void* aCallbackData,
EndTransactionFlags aFlags)
{
EndTransactionInternal(aCallback, aCallbackData, aFlags);
}
bool
BasicLayerManager::EndTransactionInternal(DrawThebesLayerCallback aCallback,
void* aCallbackData,
EndTransactionFlags aFlags)
{
SAMPLE_LABEL("BasicLayerManager", "EndTranscationInternal");
#ifdef MOZ_LAYERS_HAVE_LOG
MOZ_LAYERS_LOG((" ----- (beginning paint)"));
Log();
#endif
NS_ASSERTION(InConstruction(), "Should be in construction phase");
#ifdef DEBUG
mPhase = PHASE_DRAWING;
#endif
Layer* aLayer = GetRoot();
RenderTraceLayers(aLayer, "FF00");
mTransactionIncomplete = false;
if (mTarget && mRoot && !(aFlags & END_NO_IMMEDIATE_REDRAW)) {
nsIntRect clipRect;
if (HasShadowManager()) {
// If this has a shadow manager, the clip extents of mTarget are meaningless.
// So instead just use the root layer's visible region bounds.
const nsIntRect& bounds = mRoot->GetVisibleRegion().GetBounds();
gfxRect deviceRect =
mTarget->UserToDevice(gfxRect(bounds.x, bounds.y, bounds.width, bounds.height));
clipRect = ToOutsideIntRect(deviceRect);
} else {
gfxContextMatrixAutoSaveRestore save(mTarget);
mTarget->SetMatrix(gfxMatrix());
clipRect = ToOutsideIntRect(mTarget->GetClipExtents());
}
// Need to do this before we call ApplyDoubleBuffering,
// which depends on correct effective transforms
mSnapEffectiveTransforms =
!(mTarget->GetFlags() & gfxContext::FLAG_DISABLE_SNAPPING);
mRoot->ComputeEffectiveTransforms(gfx3DMatrix::From2D(mTarget->CurrentMatrix()));
if (IsRetained()) {
nsIntRegion region;
MarkLayersHidden(mRoot, clipRect, clipRect, region, ALLOW_OPAQUE);
if (mUsingDefaultTarget && mDoubleBuffering != BUFFER_NONE) {
ApplyDoubleBuffering(mRoot, clipRect);
}
}
PaintLayer(mTarget, mRoot, aCallback, aCallbackData, nsnull);
if (!mTransactionIncomplete) {
// Clear out target if we have a complete transaction.
mTarget = nsnull;
}
}
#ifdef MOZ_LAYERS_HAVE_LOG
Log();
MOZ_LAYERS_LOG(("]----- EndTransaction"));
#endif
#ifdef DEBUG
// Go back to the construction phase if the transaction isn't complete.
// Layout will update the layer tree and call EndTransaction().
mPhase = mTransactionIncomplete ? PHASE_CONSTRUCTION : PHASE_NONE;
#endif
if (!mTransactionIncomplete) {
// This is still valid if the transaction was incomplete.
mUsingDefaultTarget = false;
}
NS_ASSERTION(!aCallback || !mTransactionIncomplete,
"If callback is not null, transaction must be complete");
// XXX - We should probably assert here that for an incomplete transaction
// out target is the default target.
return !mTransactionIncomplete;
}
bool
BasicLayerManager::EndEmptyTransaction()
{
if (!mRoot) {
return false;
}
return EndTransactionInternal(nsnull, nsnull);
}
void
BasicLayerManager::SetRoot(Layer* aLayer)
{
NS_ASSERTION(aLayer, "Root can't be null");
NS_ASSERTION(aLayer->Manager() == this, "Wrong manager");
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
mRoot = aLayer;
}
static pixman_transform
Matrix3DToPixman(const gfx3DMatrix& aMatrix)
{
pixman_f_transform transform;
transform.m[0][0] = aMatrix._11;
transform.m[0][1] = aMatrix._21;
transform.m[0][2] = aMatrix._41;
transform.m[1][0] = aMatrix._12;
transform.m[1][1] = aMatrix._22;
transform.m[1][2] = aMatrix._42;
transform.m[2][0] = aMatrix._14;
transform.m[2][1] = aMatrix._24;
transform.m[2][2] = aMatrix._44;
pixman_transform result;
pixman_transform_from_pixman_f_transform(&result, &transform);
return result;
}
static void
PixmanTransform(const gfxImageSurface *aDest,
const gfxImageSurface *aSrc,
const gfx3DMatrix& aTransform,
gfxPoint aDestOffset)
{
gfxIntSize destSize = aDest->GetSize();
pixman_image_t* dest = pixman_image_create_bits(aDest->Format() == gfxASurface::ImageFormatARGB32 ? PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8,
destSize.width,
destSize.height,
(uint32_t*)aDest->Data(),
aDest->Stride());
gfxIntSize srcSize = aSrc->GetSize();
pixman_image_t* src = pixman_image_create_bits(aSrc->Format() == gfxASurface::ImageFormatARGB32 ? PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8,
srcSize.width,
srcSize.height,
(uint32_t*)aSrc->Data(),
aSrc->Stride());
NS_ABORT_IF_FALSE(src && dest, "Failed to create pixman images?");
pixman_transform pixTransform = Matrix3DToPixman(aTransform);
pixman_transform pixTransformInverted;
// If the transform is singular then nothing would be drawn anyway, return here
if (!pixman_transform_invert(&pixTransformInverted, &pixTransform)) {
return;
}
pixman_image_set_transform(src, &pixTransformInverted);
pixman_image_composite32(PIXMAN_OP_SRC,
src,
nsnull,
dest,
aDestOffset.x,
aDestOffset.y,
0,
0,
0,
0,
destSize.width,
destSize.height);
pixman_image_unref(dest);
pixman_image_unref(src);
}
/**
* Transform a surface using a gfx3DMatrix and blit to the destination if
* it is efficient to do so.
*
* @param aSource Source surface.
* @param aDest Desintation context.
* @param aBounds Area represented by aSource.
* @param aTransform Transformation matrix.
* @param aDrawOffset Location to draw returned surface on aDest.
* @param aDontBlit Never draw to aDest if this is true.
* @return Transformed surface, or nsnull if it has been drawn to aDest.
*/
static already_AddRefed<gfxASurface>
Transform3D(gfxASurface* aSource, gfxContext* aDest,
const gfxRect& aBounds, const gfx3DMatrix& aTransform,
gfxPoint& aDrawOffset, bool aDontBlit)
{
nsRefPtr<gfxImageSurface> sourceImage = aSource->GetAsImageSurface();
if (!sourceImage) {
sourceImage = new gfxImageSurface(gfxIntSize(aBounds.width, aBounds.height), gfxASurface::FormatFromContent(aSource->GetContentType()));
nsRefPtr<gfxContext> ctx = new gfxContext(sourceImage);
aSource->SetDeviceOffset(gfxPoint(0, 0));
ctx->SetSource(aSource);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->Paint();
}
// Find the transformed rectangle of our layer.
gfxRect offsetRect = aTransform.TransformBounds(aBounds);
// Intersect the transformed layer with the destination rectangle.
// This is in device space since we have an identity transform set on aTarget.
gfxRect destRect = aDest->GetClipExtents();
destRect.IntersectRect(destRect, offsetRect);
// Create a surface the size of the transformed object.
nsRefPtr<gfxASurface> dest = aDest->CurrentSurface();
nsRefPtr<gfxImageSurface> destImage = dest->GetAsImageSurface();
destImage = nsnull;
gfxPoint offset;
bool blitComplete;
if (!destImage || aDontBlit || !aDest->ClipContainsRect(destRect)) {
destImage = new gfxImageSurface(gfxIntSize(destRect.width, destRect.height),
gfxASurface::ImageFormatARGB32);
offset = destRect.TopLeft();
blitComplete = false;
} else {
offset = -dest->GetDeviceOffset();
blitComplete = true;
}
// Include a translation to the correct origin.
gfx3DMatrix translation = gfx3DMatrix::Translation(aBounds.x, aBounds.y, 0);
// Transform the content and offset it such that the content begins at the origin.
PixmanTransform(destImage, sourceImage, translation * aTransform, offset);
if (blitComplete) {
return nsnull;
}
// If we haven't actually drawn to aDest then return our temporary image so that
// the caller can do this.
aDrawOffset = destRect.TopLeft();
return destImage.forget();
}
void
BasicLayerManager::PaintLayer(gfxContext* aTarget,
Layer* aLayer,
DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback)
{
RenderTraceScope trace("BasicLayerManager::PaintLayer", "707070");
const nsIntRect* clipRect = aLayer->GetEffectiveClipRect();
const gfx3DMatrix& effectiveTransform = aLayer->GetEffectiveTransform();
// aLayer might not be a container layer, but if so we take care not to use
// the container variable
BasicContainerLayer* container = static_cast<BasicContainerLayer*>(aLayer);
bool needsGroup = aLayer->GetFirstChild() &&
container->UseIntermediateSurface();
BasicImplData* data = ToData(aLayer);
bool needsClipToVisibleRegion =
data->GetClipToVisibleRegion() && !aLayer->AsThebesLayer();
NS_ASSERTION(needsGroup || !aLayer->GetFirstChild() ||
container->GetOperator() == gfxContext::OPERATOR_OVER,
"non-OVER operator should have forced UseIntermediateSurface");
NS_ASSERTION(!aLayer->GetFirstChild() || !aLayer->GetMaskLayer() ||
container->UseIntermediateSurface(),
"ContainerLayer with mask layer should force UseIntermediateSurface");
// If needsSaveRestore is false, we should still save and restore
// the CTM
bool needsSaveRestore = needsGroup || clipRect || needsClipToVisibleRegion;
gfxMatrix savedMatrix;
if (needsSaveRestore) {
aTarget->Save();
if (clipRect) {
aTarget->NewPath();
aTarget->Rectangle(gfxRect(clipRect->x, clipRect->y, clipRect->width, clipRect->height), true);
aTarget->Clip();
}
}
savedMatrix = aTarget->CurrentMatrix();
gfxMatrix transform;
// Will return an identity matrix for 3d transforms, and is handled separately below.
bool is2D = effectiveTransform.CanDraw2D(&transform);
NS_ABORT_IF_FALSE(is2D || needsGroup || !aLayer->GetFirstChild(), "Must PushGroup for 3d transforms!");
if (is2D) {
aTarget->SetMatrix(transform);
} else {
aTarget->SetMatrix(gfxMatrix());
}
const nsIntRegion& visibleRegion = aLayer->GetEffectiveVisibleRegion();
// If needsGroup is true, we'll clip to the visible region after we've popped the group
if (needsClipToVisibleRegion && !needsGroup) {
gfxUtils::ClipToRegion(aTarget, visibleRegion);
// Don't need to clip to visible region again
needsClipToVisibleRegion = false;
}
bool pushedTargetOpaqueRect = false;
nsRefPtr<gfxASurface> currentSurface = aTarget->CurrentSurface();
DrawTarget *dt = aTarget->GetDrawTarget();
const nsIntRect& bounds = visibleRegion.GetBounds();
if (is2D) {
if (aTarget->IsCairo()) {
const gfxRect& targetOpaqueRect = currentSurface->GetOpaqueRect();
// Try to annotate currentSurface with a region of pixels that have been
// (or will be) painted opaque, if no such region is currently set.
if (targetOpaqueRect.IsEmpty() && visibleRegion.GetNumRects() == 1 &&
(aLayer->GetContentFlags() & Layer::CONTENT_OPAQUE) &&
!transform.HasNonAxisAlignedTransform()) {
currentSurface->SetOpaqueRect(
aTarget->UserToDevice(gfxRect(bounds.x, bounds.y, bounds.width, bounds.height)));
pushedTargetOpaqueRect = true;
}
} else {
const IntRect& targetOpaqueRect = dt->GetOpaqueRect();
// Try to annotate currentSurface with a region of pixels that have been
// (or will be) painted opaque, if no such region is currently set.
if (targetOpaqueRect.IsEmpty() && visibleRegion.GetNumRects() == 1 &&
(aLayer->GetContentFlags() & Layer::CONTENT_OPAQUE) &&
!transform.HasNonAxisAlignedTransform()) {
Rect opaqueRect = dt->GetTransform().TransformBounds(
Rect(bounds.x, bounds.y, bounds.width, bounds.height));
opaqueRect.RoundIn();
IntRect intOpaqueRect;
if (opaqueRect.ToIntRect(&intOpaqueRect)) {
aTarget->GetDrawTarget()->SetOpaqueRect(intOpaqueRect);
pushedTargetOpaqueRect = true;
}
}
}
}
nsRefPtr<gfxContext> groupTarget;
nsRefPtr<gfxASurface> untransformedSurface;
if (!is2D) {
untransformedSurface =
gfxPlatform::GetPlatform()->CreateOffscreenSurface(gfxIntSize(bounds.width, bounds.height),
gfxASurface::CONTENT_COLOR_ALPHA);
if (!untransformedSurface) {
if (pushedTargetOpaqueRect) {
if (aTarget->IsCairo()) {
currentSurface->SetOpaqueRect(gfxRect(0, 0, 0, 0));
} else {
dt->SetOpaqueRect(IntRect());
}
}
NS_ASSERTION(needsSaveRestore, "Should always need to restore with 3d transforms!");
aTarget->Restore();
return;
}
untransformedSurface->SetDeviceOffset(gfxPoint(-bounds.x, -bounds.y));
groupTarget = new gfxContext(untransformedSurface);
} else if (needsGroup) {
groupTarget = PushGroupForLayer(aTarget, aLayer, aLayer->GetEffectiveVisibleRegion(),
&needsClipToVisibleRegion);
} else {
groupTarget = aTarget;
}
if (aLayer->GetFirstChild() &&
aLayer->GetMaskLayer() &&
HasShadowManager()) {
// 'paint' the mask so that it gets sent to the shadow layer tree
static_cast<BasicImplData*>(aLayer->GetMaskLayer()->ImplData())
->Paint(nsnull, nsnull);
}
/* Only paint ourself, or our children - This optimization relies on this! */
Layer* child = aLayer->GetFirstChild();
if (!child) {
#ifdef MOZ_LAYERS_HAVE_LOG
MOZ_LAYERS_LOG(("%s (0x%p) is covered: %i\n", __FUNCTION__,
(void*)aLayer, data->IsHidden()));
#endif
if (aLayer->AsThebesLayer()) {
data->PaintThebes(groupTarget,
aLayer->GetMaskLayer(),
aCallback, aCallbackData,
aReadback);
} else {
data->Paint(groupTarget, aLayer->GetMaskLayer());
}
} else {
ReadbackProcessor readback;
ContainerLayer* container = static_cast<ContainerLayer*>(aLayer);
if (IsRetained()) {
readback.BuildUpdates(container);
}
nsAutoTArray<Layer*, 12> children;
container->SortChildrenBy3DZOrder(children);
for (PRUint32 i = 0; i < children.Length(); i++) {
PaintLayer(groupTarget, children.ElementAt(i), aCallback, aCallbackData, &readback);
if (mTransactionIncomplete)
break;
}
}
if (needsGroup) {
bool blitComplete = false;
if (is2D) {
PopGroupToSourceWithCachedSurface(aTarget, groupTarget);
} else {
NS_ABORT_IF_FALSE(untransformedSurface,
"We should always allocate an untransformed surface with 3d transforms!");
// Temporary fast fix for bug 725886
// Revert these changes when 725886 is ready
gfxRect clipExtents;
clipExtents = aTarget->GetClipExtents();
if (!clipExtents.IsEmpty()) {
gfxPoint offset;
bool dontBlit = needsClipToVisibleRegion || mTransactionIncomplete ||
aLayer->GetEffectiveOpacity() != 1.0f;
#ifdef DEBUG
if (aLayer->GetDebugColorIndex() != 0) {
gfxRGBA color((aLayer->GetDebugColorIndex() & 1) ? 1.0 : 0.0,
(aLayer->GetDebugColorIndex() & 2) ? 1.0 : 0.0,
(aLayer->GetDebugColorIndex() & 4) ? 1.0 : 0.0,
1.0);
nsRefPtr<gfxContext> temp = new gfxContext(untransformedSurface);
temp->SetColor(color);
temp->Paint();
}
#endif
nsRefPtr<gfxASurface> result =
Transform3D(untransformedSurface, aTarget, bounds,
effectiveTransform, offset, dontBlit);
blitComplete = !result;
if (result) {
aTarget->SetSource(result, offset);
}
}
}
// If we're doing our own double-buffering, we need to avoid drawing
// the results of an incomplete transaction to the destination surface ---
// that could cause flicker. Double-buffering is implemented using a
// temporary surface for one or more container layers, so we need to stop
// those temporary surfaces from being composited to aTarget.
// ApplyDoubleBuffering guarantees that this container layer can't
// intersect any other leaf layers, so if the transaction is not yet marked
// incomplete, the contents of this container layer are the final contents
// for the window.
if (!mTransactionIncomplete && !blitComplete) {
if (needsClipToVisibleRegion) {
gfxUtils::ClipToRegion(aTarget, aLayer->GetEffectiveVisibleRegion());
}
AutoSetOperator setOperator(aTarget, container->GetOperator());
gfxMatrix temp = aTarget->CurrentMatrix();
PaintWithMask(aTarget, aLayer->GetEffectiveOpacity(),
HasShadowManager() ? nsnull : aLayer->GetMaskLayer());
}
}
if (pushedTargetOpaqueRect) {
if (aTarget->IsCairo()) {
currentSurface->SetOpaqueRect(gfxRect(0, 0, 0, 0));
} else {
dt->SetOpaqueRect(IntRect());
}
}
if (needsSaveRestore) {
aTarget->Restore();
} else {
aTarget->SetMatrix(savedMatrix);
}
}
void
BasicLayerManager::ClearCachedResources()
{
if (mRoot) {
ClearLayer(mRoot);
}
mCachedSurface.Expire();
}
void
BasicLayerManager::ClearLayer(Layer* aLayer)
{
ToData(aLayer)->ClearCachedResources();
for (Layer* child = aLayer->GetFirstChild(); child;
child = child->GetNextSibling()) {
ClearLayer(child);
}
}
already_AddRefed<ThebesLayer>
BasicLayerManager::CreateThebesLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ThebesLayer> layer = new BasicThebesLayer(this);
return layer.forget();
}
already_AddRefed<ContainerLayer>
BasicLayerManager::CreateContainerLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ContainerLayer> layer = new BasicContainerLayer(this);
return layer.forget();
}
already_AddRefed<ImageLayer>
BasicLayerManager::CreateImageLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ImageLayer> layer = new BasicImageLayer(this);
return layer.forget();
}
already_AddRefed<ColorLayer>
BasicLayerManager::CreateColorLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ColorLayer> layer = new BasicColorLayer(this);
return layer.forget();
}
already_AddRefed<CanvasLayer>
BasicLayerManager::CreateCanvasLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<CanvasLayer> layer = new BasicCanvasLayer(this);
return layer.forget();
}
already_AddRefed<ReadbackLayer>
BasicLayerManager::CreateReadbackLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ReadbackLayer> layer = new BasicReadbackLayer(this);
return layer.forget();
}
BasicShadowableLayer::~BasicShadowableLayer()
{
if (HasShadow()) {
PLayerChild::Send__delete__(GetShadow());
}
MOZ_COUNT_DTOR(BasicShadowableLayer);
}
static ShadowableLayer*
ToShadowable(Layer* aLayer)
{
return aLayer->AsShadowableLayer();
}
// Some layers, like ReadbackLayers, can't be shadowed and shadowing
// them doesn't make sense anyway
static bool
ShouldShadow(Layer* aLayer)
{
if (!ToShadowable(aLayer)) {
NS_ABORT_IF_FALSE(aLayer->GetType() == Layer::TYPE_READBACK,
"Only expect not to shadow ReadbackLayers");
return false;
}
return true;
}
template<class OpT>
static BasicShadowableLayer*
GetBasicShadowable(const OpT& op)
{
return static_cast<BasicShadowableLayer*>(
static_cast<const ShadowLayerChild*>(op.layerChild())->layer());
}
class BasicShadowableContainerLayer : public BasicContainerLayer,
public BasicShadowableLayer {
public:
BasicShadowableContainerLayer(BasicShadowLayerManager* aManager) :
BasicContainerLayer(aManager)
{
MOZ_COUNT_CTOR(BasicShadowableContainerLayer);
}
virtual ~BasicShadowableContainerLayer()
{
MOZ_COUNT_DTOR(BasicShadowableContainerLayer);
}
virtual void InsertAfter(Layer* aChild, Layer* aAfter);
virtual void RemoveChild(Layer* aChild);
virtual Layer* AsLayer() { return this; }
virtual ShadowableLayer* AsShadowableLayer() { return this; }
virtual void Disconnect()
{
BasicShadowableLayer::Disconnect();
}
private:
BasicShadowLayerManager* ShadowManager()
{
return static_cast<BasicShadowLayerManager*>(mManager);
}
};
void
BasicShadowableContainerLayer::InsertAfter(Layer* aChild, Layer* aAfter)
{
if (HasShadow() && ShouldShadow(aChild)) {
while (aAfter && !ShouldShadow(aAfter)) {
aAfter = aAfter->GetPrevSibling();
}
ShadowManager()->InsertAfter(ShadowManager()->Hold(this),
ShadowManager()->Hold(aChild),
aAfter ? ShadowManager()->Hold(aAfter) : nsnull);
}
BasicContainerLayer::InsertAfter(aChild, aAfter);
}
void
BasicShadowableContainerLayer::RemoveChild(Layer* aChild)
{
if (HasShadow() && ShouldShadow(aChild)) {
ShadowManager()->RemoveChild(ShadowManager()->Hold(this),
ShadowManager()->Hold(aChild));
}
BasicContainerLayer::RemoveChild(aChild);
}
class BasicShadowableThebesLayer : public BasicThebesLayer,
public BasicShadowableLayer
{
typedef BasicThebesLayer Base;
public:
BasicShadowableThebesLayer(BasicShadowLayerManager* aManager)
: BasicThebesLayer(aManager)
, mIsNewBuffer(false)
, mFrontAndBackBufferDiffer(false)
{
MOZ_COUNT_CTOR(BasicShadowableThebesLayer);
}
virtual ~BasicShadowableThebesLayer()
{
DestroyBackBuffer();
MOZ_COUNT_DTOR(BasicShadowableThebesLayer);
}
virtual void PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback);
virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = ThebesLayerAttributes(GetValidRegion());
}
virtual Layer* AsLayer() { return this; }
virtual ShadowableLayer* AsShadowableLayer() { return this; }
virtual bool MustRetainContent() { return HasShadow(); }
void SetBackBufferAndAttrs(const OptionalThebesBuffer& aBuffer,
const nsIntRegion& aValidRegion,
const OptionalThebesBuffer& aReadOnlyFrontBuffer,
const nsIntRegion& aFrontUpdatedRegion);
virtual void Disconnect()
{
mBackBuffer = SurfaceDescriptor();
BasicShadowableLayer::Disconnect();
}
virtual BasicShadowableThebesLayer* AsThebes() { return this; }
virtual void SyncFrontBufferToBackBuffer();
private:
BasicShadowLayerManager* BasicManager()
{
return static_cast<BasicShadowLayerManager*>(mManager);
}
virtual void
PaintBuffer(gfxContext* aContext,
const nsIntRegion& aRegionToDraw,
const nsIntRegion& aExtendedRegionToDraw,
const nsIntRegion& aRegionToInvalidate,
bool aDidSelfCopy,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData) MOZ_OVERRIDE;
virtual already_AddRefed<gfxASurface>
CreateBuffer(Buffer::ContentType aType, const nsIntSize& aSize) MOZ_OVERRIDE;
void DestroyBackBuffer()
{
if (IsSurfaceDescriptorValid(mBackBuffer)) {
BasicManager()->ShadowLayerForwarder::DestroySharedSurface(&mBackBuffer);
}
}
// This describes the gfxASurface we hand to mBuffer. We keep a
// copy of the descriptor here so that we can call
// DestroySharedSurface() on the descriptor.
SurfaceDescriptor mBackBuffer;
nsIntRect mBackBufferRect;
nsIntPoint mBackBufferRectRotation;
bool mIsNewBuffer;
OptionalThebesBuffer mROFrontBuffer;
nsIntRegion mFrontUpdatedRegion;
nsIntRegion mFrontValidRegion;
PRPackedBool mFrontAndBackBufferDiffer;
};
void
BasicShadowableThebesLayer::PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback)
{
if (!HasShadow()) {
BasicThebesLayer::PaintThebes(aContext, aMaskLayer, aCallback, aCallbackData, aReadback);
return;
}
BasicThebesLayer::PaintThebes(aContext, nsnull, aCallback, aCallbackData, aReadback);
if (aMaskLayer) {
static_cast<BasicImplData*>(aMaskLayer->ImplData())
->Paint(aContext, nsnull);
}
}
void
BasicShadowableThebesLayer::SetBackBufferAndAttrs(const OptionalThebesBuffer& aBuffer,
const nsIntRegion& aValidRegion,
const OptionalThebesBuffer& aReadOnlyFrontBuffer,
const nsIntRegion& aFrontUpdatedRegion)
{
if (OptionalThebesBuffer::Tnull_t == aBuffer.type()) {
mBackBuffer = SurfaceDescriptor();
} else {
mBackBuffer = aBuffer.get_ThebesBuffer().buffer();
mBackBufferRect = aBuffer.get_ThebesBuffer().rect();
mBackBufferRectRotation = aBuffer.get_ThebesBuffer().rotation();
}
mFrontAndBackBufferDiffer = true;
mROFrontBuffer = aReadOnlyFrontBuffer;
mFrontUpdatedRegion = aFrontUpdatedRegion;
mFrontValidRegion = aValidRegion;
if (OptionalThebesBuffer::Tnull_t == mROFrontBuffer.type()) {
// For null readonly front, we have single buffer mode
// so we can do sync right now, because it does not create new buffer and
// don't do any graphic operations
SyncFrontBufferToBackBuffer();
}
}
void
BasicShadowableThebesLayer::SyncFrontBufferToBackBuffer()
{
if (!mFrontAndBackBufferDiffer) {
return;
}
nsRefPtr<gfxASurface> backBuffer;
if (!IsSurfaceDescriptorValid(mBackBuffer)) {
NS_ABORT_IF_FALSE(mROFrontBuffer.type() == OptionalThebesBuffer::TThebesBuffer,
"should have a front RO buffer by now");
const ThebesBuffer roFront = mROFrontBuffer.get_ThebesBuffer();
nsRefPtr<gfxASurface> roFrontBuffer = BasicManager()->OpenDescriptor(roFront.buffer());
backBuffer = CreateBuffer(roFrontBuffer->GetContentType(), roFrontBuffer->GetSize());
} else {
backBuffer = BasicManager()->OpenDescriptor(mBackBuffer);
}
mFrontAndBackBufferDiffer = false;
if (OptionalThebesBuffer::Tnull_t == mROFrontBuffer.type()) {
// We didn't get back a read-only ref to our old back buffer (the
// parent's new front buffer). If the parent is pushing updates
// to a texture it owns, then we probably got back the same buffer
// we pushed in the update and all is well. If not, ...
mValidRegion = mFrontValidRegion;
mBuffer.SetBackingBuffer(backBuffer, mBackBufferRect, mBackBufferRectRotation);
return;
}
MOZ_LAYERS_LOG(("BasicShadowableThebes(%p): reading back <x=%d,y=%d,w=%d,h=%d>",
this,
mFrontUpdatedRegion.GetBounds().x,
mFrontUpdatedRegion.GetBounds().y,
mFrontUpdatedRegion.GetBounds().width,
mFrontUpdatedRegion.GetBounds().height));
const ThebesBuffer roFront = mROFrontBuffer.get_ThebesBuffer();
nsRefPtr<gfxASurface> roFrontBuffer = BasicManager()->OpenDescriptor(roFront.buffer());
mBuffer.SetBackingBufferAndUpdateFrom(
backBuffer,
roFrontBuffer, roFront.rect(), roFront.rotation(),
mFrontUpdatedRegion);
mIsNewBuffer = false;
// Now the new back buffer has the same (interesting) pixels as the
// new front buffer, and mValidRegion et al. are correct wrt the new
// back buffer (i.e. as they were for the old back buffer)
}
void
BasicShadowableThebesLayer::PaintBuffer(gfxContext* aContext,
const nsIntRegion& aRegionToDraw,
const nsIntRegion& aExtendedRegionToDraw,
const nsIntRegion& aRegionToInvalidate,
bool aDidSelfCopy,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData)
{
Base::PaintBuffer(aContext,
aRegionToDraw, aExtendedRegionToDraw, aRegionToInvalidate,
aDidSelfCopy,
aCallback, aCallbackData);
if (!HasShadow() || BasicManager()->IsTransactionIncomplete()) {
return;
}
nsIntRegion updatedRegion;
if (mIsNewBuffer || aDidSelfCopy) {
// A buffer reallocation clears both buffers. The front buffer has all the
// content by now, but the back buffer is still clear. Here, in effect, we
// are saying to copy all of the pixels of the front buffer to the back.
// Also when we self-copied in the buffer, the buffer space
// changes and some changed buffer content isn't reflected in the
// draw or invalidate region (on purpose!). When this happens, we
// need to read back the entire buffer too.
updatedRegion = mVisibleRegion;
mIsNewBuffer = false;
} else {
updatedRegion = aRegionToDraw;
}
NS_ASSERTION(mBuffer.BufferRect().Contains(aRegionToDraw.GetBounds()),
"Update outside of buffer rect!");
NS_ABORT_IF_FALSE(IsSurfaceDescriptorValid(mBackBuffer),
"should have a back buffer by now");
BasicManager()->PaintedThebesBuffer(BasicManager()->Hold(this),
updatedRegion,
mBuffer.BufferRect(),
mBuffer.BufferRotation(),
mBackBuffer);
}
already_AddRefed<gfxASurface>
BasicShadowableThebesLayer::CreateBuffer(Buffer::ContentType aType,
const nsIntSize& aSize)
{
if (!HasShadow()) {
return BasicThebesLayer::CreateBuffer(aType, aSize);
}
MOZ_LAYERS_LOG(("BasicShadowableThebes(%p): creating %d x %d buffer(x2)",
this,
aSize.width, aSize.height));
if (IsSurfaceDescriptorValid(mBackBuffer)) {
BasicManager()->DestroyedThebesBuffer(BasicManager()->Hold(this),
mBackBuffer);
mBackBuffer = SurfaceDescriptor();
}
// XXX error handling
if (!BasicManager()->AllocBuffer(gfxIntSize(aSize.width, aSize.height),
aType,
&mBackBuffer)) {
enum { buflen = 256 };
char buf[buflen];
PR_snprintf(buf, buflen,
"creating ThebesLayer 'back buffer' failed! width=%d, height=%d, type=%x",
aSize.width, aSize.height, int(aType));
NS_RUNTIMEABORT(buf);
}
NS_ABORT_IF_FALSE(!mIsNewBuffer,
"Bad! Did we create a buffer twice without painting?");
mIsNewBuffer = true;
return BasicManager()->OpenDescriptor(mBackBuffer);
}
class BasicShadowableImageLayer : public BasicImageLayer,
public BasicShadowableLayer
{
public:
BasicShadowableImageLayer(BasicShadowLayerManager* aManager) :
BasicImageLayer(aManager),
mBufferIsOpaque(false)
{
MOZ_COUNT_CTOR(BasicShadowableImageLayer);
}
virtual ~BasicShadowableImageLayer()
{
DestroyBackBuffer();
MOZ_COUNT_DTOR(BasicShadowableImageLayer);
}
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer);
virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = ImageLayerAttributes(mFilter);
}
virtual Layer* AsLayer() { return this; }
virtual ShadowableLayer* AsShadowableLayer() { return this; }
virtual void SetBackBuffer(const SurfaceDescriptor& aBuffer)
{
mBackBuffer = aBuffer;
}
virtual void SetBackBufferYUVImage(gfxSharedImageSurface* aYBuffer,
gfxSharedImageSurface* aUBuffer,
gfxSharedImageSurface* aVBuffer)
{
mBackBufferY = aYBuffer;
mBackBufferU = aUBuffer;
mBackBufferV = aVBuffer;
}
virtual void Disconnect()
{
mBackBufferY = mBackBufferU = mBackBufferV = nsnull;
mBackBuffer = SurfaceDescriptor();
BasicShadowableLayer::Disconnect();
}
void DestroyBackBuffer()
{
if (IsSurfaceDescriptorValid(mBackBuffer)) {
BasicManager()->ShadowLayerForwarder::DestroySharedSurface(&mBackBuffer);
}
if (mBackBufferY) {
BasicManager()->ShadowLayerForwarder::DestroySharedSurface(mBackBufferY);
BasicManager()->ShadowLayerForwarder::DestroySharedSurface(mBackBufferU);
BasicManager()->ShadowLayerForwarder::DestroySharedSurface(mBackBufferV);
}
}
private:
BasicShadowLayerManager* BasicManager()
{
return static_cast<BasicShadowLayerManager*>(mManager);
}
// For YUV Images these are the 3 planes (Y, Cb and Cr),
// for RGB images only mBackSurface is used.
SurfaceDescriptor mBackBuffer;
bool mBufferIsOpaque;
nsRefPtr<gfxSharedImageSurface> mBackBufferY;
nsRefPtr<gfxSharedImageSurface> mBackBufferU;
nsRefPtr<gfxSharedImageSurface> mBackBufferV;
gfxIntSize mCbCrSize;
};
void
BasicShadowableImageLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
if (!HasShadow()) {
BasicImageLayer::Paint(aContext, aMaskLayer);
return;
}
if (!mContainer) {
return;
}
AutoLockImage autoLock(mContainer);
Image *image = autoLock.GetImage();
if (!image) {
return;
}
if (aMaskLayer) {
static_cast<BasicImplData*>(aMaskLayer->ImplData())
->Paint(aContext, nsnull);
}
if (image->GetFormat() == Image::PLANAR_YCBCR && BasicManager()->IsCompositingCheap()) {
PlanarYCbCrImage *YCbCrImage = static_cast<PlanarYCbCrImage*>(image);
const PlanarYCbCrImage::Data *data = YCbCrImage->GetData();
NS_ASSERTION(data, "Must be able to retrieve yuv data from image!");
if (mSize != data->mYSize || mCbCrSize != data->mCbCrSize || !mBackBufferY) {
DestroyBackBuffer();
mSize = data->mYSize;
mCbCrSize = data->mCbCrSize;
if (!BasicManager()->AllocBuffer(mSize, gfxASurface::CONTENT_ALPHA,
getter_AddRefs(mBackBufferY)) ||
!BasicManager()->AllocBuffer(mCbCrSize, gfxASurface::CONTENT_ALPHA,
getter_AddRefs(mBackBufferU)) ||
!BasicManager()->AllocBuffer(mCbCrSize, gfxASurface::CONTENT_ALPHA,
getter_AddRefs(mBackBufferV))) {
NS_RUNTIMEABORT("creating ImageLayer 'front buffer' failed!");
}
}
for (int i = 0; i < data->mYSize.height; i++) {
memcpy(mBackBufferY->Data() + i * mBackBufferY->Stride(),
data->mYChannel + i * data->mYStride,
data->mYSize.width);
}
for (int i = 0; i < data->mCbCrSize.height; i++) {
memcpy(mBackBufferU->Data() + i * mBackBufferU->Stride(),
data->mCbChannel + i * data->mCbCrStride,
data->mCbCrSize.width);
memcpy(mBackBufferV->Data() + i * mBackBufferV->Stride(),
data->mCrChannel + i * data->mCbCrStride,
data->mCbCrSize.width);
}
YUVImage yuv(mBackBufferY->GetShmem(),
mBackBufferU->GetShmem(),
mBackBufferV->GetShmem(),
data->GetPictureRect());
BasicManager()->PaintedImage(BasicManager()->Hold(this),
yuv);
return;
}
gfxIntSize oldSize = mSize;
nsRefPtr<gfxPattern> pat = GetAndPaintCurrentImage
(aContext, GetEffectiveOpacity(), nsnull);
if (!pat)
return;
bool isOpaque = (GetContentFlags() & CONTENT_OPAQUE);
if (oldSize != mSize ||
!IsSurfaceDescriptorValid(mBackBuffer) ||
isOpaque != mBufferIsOpaque) {
DestroyBackBuffer();
mBufferIsOpaque = isOpaque;
if (!BasicManager()->AllocBuffer(
mSize,
isOpaque ?
gfxASurface::CONTENT_COLOR : gfxASurface::CONTENT_COLOR_ALPHA,
&mBackBuffer))
NS_RUNTIMEABORT("creating ImageLayer 'front buffer' failed!");
}
nsRefPtr<gfxASurface> backSurface =
BasicManager()->OpenDescriptor(mBackBuffer);
nsRefPtr<gfxContext> tmpCtx = new gfxContext(backSurface);
tmpCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
PaintContext(pat,
nsIntRegion(nsIntRect(0, 0, mSize.width, mSize.height)),
1.0, tmpCtx, nsnull);
BasicManager()->PaintedImage(BasicManager()->Hold(this),
mBackBuffer);
}
class BasicShadowableColorLayer : public BasicColorLayer,
public BasicShadowableLayer
{
public:
BasicShadowableColorLayer(BasicShadowLayerManager* aManager) :
BasicColorLayer(aManager)
{
MOZ_COUNT_CTOR(BasicShadowableColorLayer);
}
virtual ~BasicShadowableColorLayer()
{
MOZ_COUNT_DTOR(BasicShadowableColorLayer);
}
virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = ColorLayerAttributes(GetColor());
}
virtual Layer* AsLayer() { return this; }
virtual ShadowableLayer* AsShadowableLayer() { return this; }
virtual void Disconnect()
{
BasicShadowableLayer::Disconnect();
}
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer);
};
void
BasicShadowableColorLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
// TODO[nrc] move this back inside the if, and clear the context some other way
BasicColorLayer::Paint(aContext, aMaskLayer);
if (!HasShadow()) {
return;
}
if (aMaskLayer) {
static_cast<BasicImplData*>(aMaskLayer->ImplData())
->Paint(aContext, nsnull);
}
}
class BasicShadowableCanvasLayer : public BasicCanvasLayer,
public BasicShadowableLayer
{
public:
BasicShadowableCanvasLayer(BasicShadowLayerManager* aManager) :
BasicCanvasLayer(aManager),
mBufferIsOpaque(false)
{
MOZ_COUNT_CTOR(BasicShadowableCanvasLayer);
}
virtual ~BasicShadowableCanvasLayer()
{
DestroyBackBuffer();
MOZ_COUNT_DTOR(BasicShadowableCanvasLayer);
}
virtual void Initialize(const Data& aData);
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer);
virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = CanvasLayerAttributes(mFilter);
}
virtual Layer* AsLayer() { return this; }
virtual ShadowableLayer* AsShadowableLayer() { return this; }
virtual void SetBackBuffer(const SurfaceDescriptor& aBuffer)
{
mBackBuffer = aBuffer;
}
virtual void Disconnect()
{
mBackBuffer = SurfaceDescriptor();
BasicShadowableLayer::Disconnect();
}
void DestroyBackBuffer()
{
if (IsSurfaceDescriptorValid(mBackBuffer)) {
BasicManager()->ShadowLayerForwarder::DestroySharedSurface(&mBackBuffer);
mBackBuffer = SurfaceDescriptor();
}
}
private:
BasicShadowLayerManager* BasicManager()
{
return static_cast<BasicShadowLayerManager*>(mManager);
}
SurfaceDescriptor mBackBuffer;
bool mBufferIsOpaque;
};
void
BasicShadowableCanvasLayer::Initialize(const Data& aData)
{
BasicCanvasLayer::Initialize(aData);
if (!HasShadow())
return;
// XXX won't get here currently; need to figure out what to do on
// canvas resizes
if (IsSurfaceDescriptorValid(mBackBuffer)) {
nsRefPtr<gfxASurface> backSurface =
BasicManager()->OpenDescriptor(mBackBuffer);
if (gfxIntSize(mBounds.width, mBounds.height) != backSurface->GetSize()) {
DestroyBackBuffer();
}
}
}
void
BasicShadowableCanvasLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
if (!HasShadow()) {
BasicCanvasLayer::Paint(aContext, aMaskLayer);
return;
}
bool isOpaque = (GetContentFlags() & CONTENT_OPAQUE);
if (!IsSurfaceDescriptorValid(mBackBuffer) ||
isOpaque != mBufferIsOpaque) {
DestroyBackBuffer();
mBufferIsOpaque = isOpaque;
if (!BasicManager()->AllocBuffer(
gfxIntSize(mBounds.width, mBounds.height),
isOpaque ?
gfxASurface::CONTENT_COLOR : gfxASurface::CONTENT_COLOR_ALPHA,
&mBackBuffer))
NS_RUNTIMEABORT("creating CanvasLayer back buffer failed!");
}
nsRefPtr<gfxASurface> backSurface =
BasicManager()->OpenDescriptor(mBackBuffer);
if (aMaskLayer) {
static_cast<BasicImplData*>(aMaskLayer->ImplData())
->Paint(aContext, nsnull);
}
UpdateSurface(backSurface, nsnull);
FireDidTransactionCallback();
BasicManager()->PaintedCanvas(BasicManager()->Hold(this),
mNeedsYFlip ? true : false,
mBackBuffer);
}
class ShadowThebesLayerBuffer : public BasicThebesLayerBuffer
{
typedef BasicThebesLayerBuffer Base;
public:
ShadowThebesLayerBuffer()
: Base(NULL)
{
MOZ_COUNT_CTOR(ShadowThebesLayerBuffer);
}
~ShadowThebesLayerBuffer()
{
MOZ_COUNT_DTOR(ShadowThebesLayerBuffer);
}
void Swap(gfxASurface* aNewBuffer,
const nsIntRect& aNewRect, const nsIntPoint& aNewRotation,
gfxASurface** aOldBuffer,
nsIntRect* aOldRect, nsIntPoint* aOldRotation)
{
*aOldRect = BufferRect();
*aOldRotation = BufferRotation();
nsRefPtr<gfxASurface> oldBuffer;
oldBuffer = SetBuffer(aNewBuffer,
aNewRect, aNewRotation);
oldBuffer.forget(aOldBuffer);
}
protected:
virtual already_AddRefed<gfxASurface>
CreateBuffer(ContentType, const nsIntSize&, PRUint32)
{
NS_RUNTIMEABORT("ShadowThebesLayer can't paint content");
return nsnull;
}
};
class BasicShadowThebesLayer : public ShadowThebesLayer, public BasicImplData {
public:
BasicShadowThebesLayer(BasicShadowLayerManager* aLayerManager)
: ShadowThebesLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicShadowThebesLayer);
}
virtual ~BasicShadowThebesLayer()
{
// If Disconnect() wasn't called on us, then we assume that the
// remote side shut down and IPC is disconnected, so we let IPDL
// clean up our front surface Shmem.
MOZ_COUNT_DTOR(BasicShadowThebesLayer);
}
virtual void SetValidRegion(const nsIntRegion& aRegion)
{
mOldValidRegion = mValidRegion;
ShadowThebesLayer::SetValidRegion(aRegion);
}
virtual void Disconnect()
{
DestroyFrontBuffer();
ShadowThebesLayer::Disconnect();
}
virtual void
Swap(const ThebesBuffer& aNewFront, const nsIntRegion& aUpdatedRegion,
OptionalThebesBuffer* aNewBack, nsIntRegion* aNewBackValidRegion,
OptionalThebesBuffer* aReadOnlyFront, nsIntRegion* aFrontUpdatedRegion);
virtual void DestroyFrontBuffer()
{
mFrontBuffer.Clear();
mValidRegion.SetEmpty();
mOldValidRegion.SetEmpty();
if (IsSurfaceDescriptorValid(mFrontBufferDescriptor)) {
mAllocator->DestroySharedSurface(&mFrontBufferDescriptor);
}
}
virtual void PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback);
private:
BasicShadowLayerManager* BasicManager()
{
return static_cast<BasicShadowLayerManager*>(mManager);
}
ShadowThebesLayerBuffer mFrontBuffer;
// Describes the gfxASurface we hand out to |mFrontBuffer|.
SurfaceDescriptor mFrontBufferDescriptor;
// When we receive an update from our remote partner, we stow away
// our previous parameters that described our previous front buffer.
// Then when we Swap() back/front buffers, we can return these
// parameters to our partner (adjusted as needed).
nsIntRegion mOldValidRegion;
};
void
BasicShadowThebesLayer::Swap(const ThebesBuffer& aNewFront,
const nsIntRegion& aUpdatedRegion,
OptionalThebesBuffer* aNewBack,
nsIntRegion* aNewBackValidRegion,
OptionalThebesBuffer* aReadOnlyFront,
nsIntRegion* aFrontUpdatedRegion)
{
nsRefPtr<gfxASurface> newFrontBuffer =
BasicManager()->OpenDescriptor(aNewFront.buffer());
if (IsSurfaceDescriptorValid(mFrontBufferDescriptor)) {
nsRefPtr<gfxASurface> currentFront = BasicManager()->OpenDescriptor(mFrontBufferDescriptor);
if (currentFront->GetSize() != newFrontBuffer->GetSize()) {
// Current front buffer is obsolete
DestroyFrontBuffer();
}
}
// This code relies on Swap() arriving *after* attribute mutations.
if (IsSurfaceDescriptorValid(mFrontBufferDescriptor)) {
*aNewBack = ThebesBuffer();
aNewBack->get_ThebesBuffer().buffer() = mFrontBufferDescriptor;
} else {
*aNewBack = null_t();
}
// We have to invalidate the pixels painted into the new buffer.
// They might overlap with our old pixels.
aNewBackValidRegion->Sub(mOldValidRegion, aUpdatedRegion);
nsRefPtr<gfxASurface> unused;
nsIntRect backRect;
nsIntPoint backRotation;
mFrontBuffer.Swap(
newFrontBuffer, aNewFront.rect(), aNewFront.rotation(),
getter_AddRefs(unused), &backRect, &backRotation);
if (aNewBack->type() != OptionalThebesBuffer::Tnull_t) {
aNewBack->get_ThebesBuffer().rect() = backRect;
aNewBack->get_ThebesBuffer().rotation() = backRotation;
}
mFrontBufferDescriptor = aNewFront.buffer();
*aReadOnlyFront = aNewFront;
*aFrontUpdatedRegion = aUpdatedRegion;
}
void
BasicShadowThebesLayer::PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback)
{
NS_ASSERTION(BasicManager()->InDrawing(),
"Can only draw in drawing phase");
NS_ASSERTION(BasicManager()->IsRetained(),
"ShadowThebesLayer makes no sense without retained mode");
if (!mFrontBuffer.GetBuffer()) {
return;
}
mFrontBuffer.DrawTo(this, aContext, GetEffectiveOpacity(), aMaskLayer);
}
class BasicShadowContainerLayer : public ShadowContainerLayer, public BasicImplData {
template<class Container>
friend void ContainerInsertAfter(Layer* aChild, Layer* aAfter, Container* aContainer);
template<class Container>
friend void ContainerRemoveChild(Layer* aChild, Container* aContainer);
public:
BasicShadowContainerLayer(BasicShadowLayerManager* aLayerManager) :
ShadowContainerLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicShadowContainerLayer);
}
virtual ~BasicShadowContainerLayer()
{
while (mFirstChild) {
ContainerRemoveChild(mFirstChild, this);
}
MOZ_COUNT_DTOR(BasicShadowContainerLayer);
}
virtual void InsertAfter(Layer* aChild, Layer* aAfter)
{ ContainerInsertAfter(aChild, aAfter, this); }
virtual void RemoveChild(Layer* aChild)
{ ContainerRemoveChild(aChild, this); }
virtual void ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
{
// We push groups for container layers if we need to, which always
// are aligned in device space, so it doesn't really matter how we snap
// containers.
gfxMatrix residual;
gfx3DMatrix idealTransform = GetLocalTransform()*aTransformToSurface;
idealTransform.ProjectTo2D();
if (!idealTransform.CanDraw2D()) {
mEffectiveTransform = idealTransform;
ComputeEffectiveTransformsForChildren(gfx3DMatrix());
ComputeEffectiveTransformForMaskLayer(gfx3DMatrix());
mUseIntermediateSurface = true;
return;
}
mEffectiveTransform = SnapTransform(idealTransform, gfxRect(0, 0, 0, 0), &residual);
// We always pass the ideal matrix down to our children, so there is no
// need to apply any compensation using the residual from SnapTransform.
ComputeEffectiveTransformsForChildren(idealTransform);
ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
/* If we have a single child, it can just inherit our opacity,
* otherwise we need a PushGroup and we need to mark ourselves as using
* an intermediate surface so our children don't inherit our opacity
* via GetEffectiveOpacity.
* Having a mask layer always forces our own push group
*/
mUseIntermediateSurface = GetMaskLayer() ||
(GetEffectiveOpacity() != 1.0 && HasMultipleChildren());
}
};
class BasicShadowImageLayer : public ShadowImageLayer, public BasicImplData {
public:
BasicShadowImageLayer(BasicShadowLayerManager* aLayerManager) :
ShadowImageLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicShadowImageLayer);
}
virtual ~BasicShadowImageLayer()
{
MOZ_COUNT_DTOR(BasicShadowImageLayer);
}
virtual void Disconnect()
{
DestroyFrontBuffer();
ShadowImageLayer::Disconnect();
}
virtual void Swap(const SharedImage& aNewFront,
SharedImage* aNewBack);
virtual void DestroyFrontBuffer()
{
if (mAllocator && IsSurfaceDescriptorValid(mFrontBuffer)) {
mAllocator->DestroySharedSurface(&mFrontBuffer);
}
}
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer);
already_AddRefed<gfxASurface> GetAsSurface();
protected:
BasicShadowLayerManager* BasicManager()
{
return static_cast<BasicShadowLayerManager*>(mManager);
}
SurfaceDescriptor mFrontBuffer;
gfxIntSize mSize;
};
void
BasicShadowImageLayer::Swap(const SharedImage& aNewFront,
SharedImage* aNewBack)
{
nsRefPtr<gfxASurface> surface =
BasicManager()->OpenDescriptor(aNewFront);
// Destroy mFrontBuffer if size different or image type is different
bool surfaceConfigChanged = surface->GetSize() != mSize;
if (IsSurfaceDescriptorValid(mFrontBuffer)) {
nsRefPtr<gfxASurface> front = BasicManager()->OpenDescriptor(mFrontBuffer);
surfaceConfigChanged = surfaceConfigChanged ||
surface->GetContentType() != front->GetContentType();
}
if (surfaceConfigChanged) {
DestroyFrontBuffer();
mSize = surface->GetSize();
}
// If mFrontBuffer
if (IsSurfaceDescriptorValid(mFrontBuffer)) {
*aNewBack = mFrontBuffer;
} else {
*aNewBack = null_t();
}
mFrontBuffer = aNewFront.get_SurfaceDescriptor();
}
void
BasicShadowImageLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
if (!IsSurfaceDescriptorValid(mFrontBuffer)) {
return;
}
nsRefPtr<gfxASurface> surface =
BasicManager()->OpenDescriptor(mFrontBuffer);
nsRefPtr<gfxPattern> pat = new gfxPattern(surface);
pat->SetFilter(mFilter);
// The visible region can extend outside the image, so just draw
// within the image bounds.
AutoSetOperator setOperator(aContext, GetOperator());
BasicImageLayer::PaintContext(pat,
nsIntRegion(nsIntRect(0, 0, mSize.width, mSize.height)),
GetEffectiveOpacity(), aContext,
aMaskLayer);
}
already_AddRefed<gfxASurface>
BasicShadowImageLayer::GetAsSurface()
{
if (!IsSurfaceDescriptorValid(mFrontBuffer)) {
return nsnull;
}
return BasicManager()->OpenDescriptor(mFrontBuffer);
}
class BasicShadowColorLayer : public ShadowColorLayer,
public BasicImplData
{
public:
BasicShadowColorLayer(BasicShadowLayerManager* aLayerManager) :
ShadowColorLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicShadowColorLayer);
}
virtual ~BasicShadowColorLayer()
{
MOZ_COUNT_DTOR(BasicShadowColorLayer);
}
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer)
{
AutoSetOperator setOperator(aContext, GetOperator());
BasicColorLayer::PaintColorTo(mColor, GetEffectiveOpacity(),
aContext, aMaskLayer);
}
};
class BasicShadowCanvasLayer : public ShadowCanvasLayer,
public BasicImplData
{
public:
BasicShadowCanvasLayer(BasicShadowLayerManager* aLayerManager) :
ShadowCanvasLayer(aLayerManager, static_cast<BasicImplData*>(this))
{
MOZ_COUNT_CTOR(BasicShadowCanvasLayer);
}
virtual ~BasicShadowCanvasLayer()
{
MOZ_COUNT_DTOR(BasicShadowCanvasLayer);
}
virtual void Disconnect()
{
DestroyFrontBuffer();
ShadowCanvasLayer::Disconnect();
}
virtual void Initialize(const Data& aData);
void Swap(const CanvasSurface& aNewFront, bool needYFlip, CanvasSurface* aNewBack);
virtual void DestroyFrontBuffer()
{
if (IsSurfaceDescriptorValid(mFrontSurface)) {
mAllocator->DestroySharedSurface(&mFrontSurface);
}
}
virtual void Paint(gfxContext* aContext, Layer* aMaskLayer);
private:
BasicShadowLayerManager* BasicManager()
{
return static_cast<BasicShadowLayerManager*>(mManager);
}
SurfaceDescriptor mFrontSurface;
bool mNeedsYFlip;
};
void
BasicShadowCanvasLayer::Initialize(const Data& aData)
{
NS_RUNTIMEABORT("Incompatibe surface type");
}
void
BasicShadowCanvasLayer::Swap(const CanvasSurface& aNewFront, bool needYFlip,
CanvasSurface* aNewBack)
{
nsRefPtr<gfxASurface> surface =
BasicManager()->OpenDescriptor(aNewFront);
// Destroy mFrontBuffer if size different
gfxIntSize sz = surface->GetSize();
bool surfaceConfigChanged = sz != gfxIntSize(mBounds.width, mBounds.height);
if (IsSurfaceDescriptorValid(mFrontSurface)) {
nsRefPtr<gfxASurface> front = BasicManager()->OpenDescriptor(mFrontSurface);
surfaceConfigChanged = surfaceConfigChanged ||
surface->GetContentType() != front->GetContentType();
}
if (surfaceConfigChanged) {
DestroyFrontBuffer();
mBounds.SetRect(0, 0, sz.width, sz.height);
}
mNeedsYFlip = needYFlip;
// If mFrontBuffer
if (IsSurfaceDescriptorValid(mFrontSurface)) {
*aNewBack = mFrontSurface;
} else {
*aNewBack = null_t();
}
mFrontSurface = aNewFront.get_SurfaceDescriptor();
}
void
BasicShadowCanvasLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
NS_ASSERTION(BasicManager()->InDrawing(),
"Can only draw in drawing phase");
if (!IsSurfaceDescriptorValid(mFrontSurface)) {
return;
}
nsRefPtr<gfxASurface> surface =
BasicManager()->OpenDescriptor(mFrontSurface);
nsRefPtr<gfxPattern> pat = new gfxPattern(surface);
pat->SetFilter(mFilter);
pat->SetExtend(gfxPattern::EXTEND_PAD);
gfxRect r(0, 0, mBounds.width, mBounds.height);
gfxMatrix m;
if (mNeedsYFlip) {
m = aContext->CurrentMatrix();
aContext->Translate(gfxPoint(0.0, mBounds.height));
aContext->Scale(1.0, -1.0);
}
AutoSetOperator setOperator(aContext, GetOperator());
aContext->NewPath();
// No need to snap here; our transform has already taken care of it
aContext->Rectangle(r);
aContext->SetPattern(pat);
FillWithMask(aContext, GetEffectiveOpacity(), aMaskLayer);
if (mNeedsYFlip) {
aContext->SetMatrix(m);
}
}
// Create a shadow layer (PLayerChild) for aLayer, if we're forwarding
// our layer tree to a parent process. Record the new layer creation
// in the current open transaction as a side effect.
template<typename CreatedMethod>
static void
MaybeCreateShadowFor(BasicShadowableLayer* aLayer,
BasicShadowLayerManager* aMgr,
CreatedMethod aMethod)
{
if (!aMgr->HasShadowManager()) {
return;
}
PLayerChild* shadow = aMgr->ConstructShadowFor(aLayer);
// XXX error handling
NS_ABORT_IF_FALSE(shadow, "failed to create shadow");
aLayer->SetShadow(shadow);
(aMgr->*aMethod)(aLayer);
aMgr->Hold(aLayer->AsLayer());
}
#define MAYBE_CREATE_SHADOW(_type) \
MaybeCreateShadowFor(layer, this, \
&ShadowLayerForwarder::Created ## _type ## Layer)
already_AddRefed<ThebesLayer>
BasicShadowLayerManager::CreateThebesLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
#ifdef FORCE_BASICTILEDTHEBESLAYER
if (HasShadowManager() && GetParentBackendType() == LayerManager::LAYERS_OPENGL) {
// BasicTiledThebesLayer doesn't support main
// thread compositing so only return this layer
// type if we have a shadow manager.
nsRefPtr<BasicTiledThebesLayer> layer =
new BasicTiledThebesLayer(this);
MAYBE_CREATE_SHADOW(Thebes);
return layer.forget();
} else
#endif
{
nsRefPtr<BasicShadowableThebesLayer> layer =
new BasicShadowableThebesLayer(this);
MAYBE_CREATE_SHADOW(Thebes);
return layer.forget();
}
}
already_AddRefed<ContainerLayer>
BasicShadowLayerManager::CreateContainerLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<BasicShadowableContainerLayer> layer =
new BasicShadowableContainerLayer(this);
MAYBE_CREATE_SHADOW(Container);
return layer.forget();
}
already_AddRefed<ImageLayer>
BasicShadowLayerManager::CreateImageLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<BasicShadowableImageLayer> layer =
new BasicShadowableImageLayer(this);
MAYBE_CREATE_SHADOW(Image);
return layer.forget();
}
already_AddRefed<ColorLayer>
BasicShadowLayerManager::CreateColorLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<BasicShadowableColorLayer> layer =
new BasicShadowableColorLayer(this);
MAYBE_CREATE_SHADOW(Color);
return layer.forget();
}
already_AddRefed<CanvasLayer>
BasicShadowLayerManager::CreateCanvasLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<BasicShadowableCanvasLayer> layer =
new BasicShadowableCanvasLayer(this);
MAYBE_CREATE_SHADOW(Canvas);
return layer.forget();
}
already_AddRefed<ShadowThebesLayer>
BasicShadowLayerManager::CreateShadowThebesLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ShadowThebesLayer> layer = new BasicShadowThebesLayer(this);
return layer.forget();
}
already_AddRefed<ShadowContainerLayer>
BasicShadowLayerManager::CreateShadowContainerLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ShadowContainerLayer> layer = new BasicShadowContainerLayer(this);
return layer.forget();
}
already_AddRefed<ShadowImageLayer>
BasicShadowLayerManager::CreateShadowImageLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ShadowImageLayer> layer = new BasicShadowImageLayer(this);
return layer.forget();
}
already_AddRefed<ShadowColorLayer>
BasicShadowLayerManager::CreateShadowColorLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ShadowColorLayer> layer = new BasicShadowColorLayer(this);
return layer.forget();
}
already_AddRefed<ShadowCanvasLayer>
BasicShadowLayerManager::CreateShadowCanvasLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ShadowCanvasLayer> layer = new BasicShadowCanvasLayer(this);
return layer.forget();
}
BasicShadowLayerManager::BasicShadowLayerManager(nsIWidget* aWidget) :
BasicLayerManager(aWidget)
{
MOZ_COUNT_CTOR(BasicShadowLayerManager);
}
BasicShadowLayerManager::~BasicShadowLayerManager()
{
MOZ_COUNT_DTOR(BasicShadowLayerManager);
}
void
BasicShadowLayerManager::SetRoot(Layer* aLayer)
{
if (mRoot != aLayer) {
if (HasShadowManager()) {
// Have to hold the old root and its children in order to
// maintain the same view of the layer tree in this process as
// the parent sees. Otherwise layers can be destroyed
// mid-transaction and bad things can happen (v. bug 612573)
if (mRoot) {
Hold(mRoot);
}
ShadowLayerForwarder::SetRoot(Hold(aLayer));
}
BasicLayerManager::SetRoot(aLayer);
}
}
void
BasicShadowLayerManager::Mutated(Layer* aLayer)
{
BasicLayerManager::Mutated(aLayer);
NS_ASSERTION(InConstruction() || InDrawing(), "wrong phase");
if (HasShadowManager() && ShouldShadow(aLayer)) {
ShadowLayerForwarder::Mutated(Hold(aLayer));
}
}
void
BasicShadowLayerManager::BeginTransactionWithTarget(gfxContext* aTarget)
{
NS_ABORT_IF_FALSE(mKeepAlive.IsEmpty(), "uncommitted txn?");
// If the last transaction was incomplete (a failed DoEmptyTransaction),
// don't signal a new transaction to ShadowLayerForwarder. Carry on adding
// to the previous transaction.
if (HasShadowManager()) {
ShadowLayerForwarder::BeginTransaction();
}
BasicLayerManager::BeginTransactionWithTarget(aTarget);
}
void
BasicShadowLayerManager::EndTransaction(DrawThebesLayerCallback aCallback,
void* aCallbackData,
EndTransactionFlags aFlags)
{
BasicLayerManager::EndTransaction(aCallback, aCallbackData, aFlags);
ForwardTransaction();
}
bool
BasicShadowLayerManager::EndEmptyTransaction()
{
if (!BasicLayerManager::EndEmptyTransaction()) {
// Return without calling ForwardTransaction. This leaves the
// ShadowLayerForwarder transaction open; the following
// EndTransaction will complete it.
return false;
}
ForwardTransaction();
return true;
}
void
BasicShadowLayerManager::ForwardTransaction()
{
RenderTraceScope rendertrace("Foward Transaction", "000090");
#ifdef DEBUG
mPhase = PHASE_FORWARD;
#endif
// forward this transaction's changeset to our ShadowLayerManager
AutoInfallibleTArray<EditReply, 10> replies;
if (HasShadowManager() && ShadowLayerForwarder::EndTransaction(&replies)) {
for (nsTArray<EditReply>::size_type i = 0; i < replies.Length(); ++i) {
const EditReply& reply = replies[i];
switch (reply.type()) {
case EditReply::TOpThebesBufferSwap: {
MOZ_LAYERS_LOG(("[LayersForwarder] ThebesBufferSwap"));
const OpThebesBufferSwap& obs = reply.get_OpThebesBufferSwap();
BasicShadowableThebesLayer* thebes = GetBasicShadowable(obs)->AsThebes();
thebes->SetBackBufferAndAttrs(
obs.newBackBuffer(), obs.newValidRegion(),
obs.readOnlyFrontBuffer(), obs.frontUpdatedRegion());
break;
}
case EditReply::TOpBufferSwap: {
MOZ_LAYERS_LOG(("[LayersForwarder] BufferSwap"));
const OpBufferSwap& obs = reply.get_OpBufferSwap();
const CanvasSurface& newBack = obs.newBackBuffer();
if (newBack.type() == CanvasSurface::TSurfaceDescriptor) {
GetBasicShadowable(obs)->SetBackBuffer(newBack.get_SurfaceDescriptor());
} else if (newBack.type() == CanvasSurface::Tnull_t) {
GetBasicShadowable(obs)->SetBackBuffer(SurfaceDescriptor());
} else {
NS_RUNTIMEABORT("Unknown back image type");
}
break;
}
case EditReply::TOpImageSwap: {
MOZ_LAYERS_LOG(("[LayersForwarder] YUVBufferSwap"));
const OpImageSwap& ois = reply.get_OpImageSwap();
BasicShadowableLayer* layer = GetBasicShadowable(ois);
const SharedImage& newBack = ois.newBackImage();
if (newBack.type() == SharedImage::TSurfaceDescriptor) {
layer->SetBackBuffer(newBack.get_SurfaceDescriptor());
} else if (newBack.type() == SharedImage::TYUVImage) {
const YUVImage& yuv = newBack.get_YUVImage();
nsRefPtr<gfxSharedImageSurface> YSurf = gfxSharedImageSurface::Open(yuv.Ydata());
nsRefPtr<gfxSharedImageSurface> USurf = gfxSharedImageSurface::Open(yuv.Udata());
nsRefPtr<gfxSharedImageSurface> VSurf = gfxSharedImageSurface::Open(yuv.Vdata());
layer->SetBackBufferYUVImage(YSurf, USurf, VSurf);
} else {
layer->SetBackBuffer(SurfaceDescriptor());
layer->SetBackBufferYUVImage(nsnull, nsnull, nsnull);
}
break;
}
default:
NS_RUNTIMEABORT("not reached");
}
}
} else if (HasShadowManager()) {
NS_WARNING("failed to forward Layers transaction");
}
#ifdef DEBUG
mPhase = PHASE_NONE;
#endif
// this may result in Layers being deleted, which results in
// PLayer::Send__delete__() and DeallocShmem()
mKeepAlive.Clear();
}
ShadowableLayer*
BasicShadowLayerManager::Hold(Layer* aLayer)
{
NS_ABORT_IF_FALSE(HasShadowManager(),
"top-level tree, no shadow tree to remote to");
ShadowableLayer* shadowable = ToShadowable(aLayer);
NS_ABORT_IF_FALSE(shadowable, "trying to remote an unshadowable layer");
mKeepAlive.AppendElement(aLayer);
return shadowable;
}
bool
BasicShadowLayerManager::IsCompositingCheap()
{
// Whether compositing is cheap depends on the parent backend.
return mShadowManager &&
LayerManager::IsCompositingCheap(GetParentBackendType());
}
void
BasicShadowLayerManager::SetIsFirstPaint()
{
ShadowLayerForwarder::SetIsFirstPaint();
}
}
}
Jump to Line
Something went wrong with that request. Please try again.