void
ThebesLayerComposite::RenderLayer(const nsIntPoint& aOffset,
const nsIntRect& aClipRect)
{
if (!mBuffer || !mBuffer->IsAttached()) {
return;
}
MOZ_ASSERT(mBuffer->GetCompositor() == mCompositeManager->GetCompositor() &&
mBuffer->GetLayer() == this,
"buffer is corrupted");
gfx::Matrix4x4 transform;
ToMatrix4x4(GetEffectiveTransform(), transform);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
nsRefPtr<gfxImageSurface> surf = mBuffer->GetAsSurface();
WriteSnapshotToDumpFile(this, surf);
}
#endif
EffectChain effectChain;
LayerManagerComposite::AddMaskEffect(mMaskLayer, effectChain);
nsIntRegion visibleRegion = GetEffectiveVisibleRegion();
TiledLayerProperties tiledLayerProps;
if (mRequiresTiledProperties) {
// calculating these things can be a little expensive, so don't
// do them if we don't have to
tiledLayerProps.mVisibleRegion = visibleRegion;
tiledLayerProps.mDisplayPort = GetDisplayPort();
tiledLayerProps.mEffectiveResolution = GetEffectiveResolution();
tiledLayerProps.mCompositionBounds = GetCompositionBounds();
tiledLayerProps.mRetainTiles = !mIsFixedPosition;
tiledLayerProps.mValidRegion = mValidRegion;
}
mBuffer->SetPaintWillResample(MayResample());
mBuffer->Composite(effectChain,
GetEffectiveOpacity(),
transform,
gfx::Point(aOffset.x, aOffset.y),
gfx::FILTER_LINEAR,
clipRect,
&visibleRegion,
mRequiresTiledProperties ? &tiledLayerProps
: nullptr);
if (mRequiresTiledProperties) {
mValidRegion = tiledLayerProps.mValidRegion;
}
LayerManagerComposite::RemoveMaskEffect(mMaskLayer);
mCompositeManager->GetCompositor()->MakeCurrent();
}
void
ClientThebesLayer::PaintThebes()
{
PROFILER_LABEL("ClientThebesLayer", "PaintThebes");
NS_ASSERTION(ClientManager()->InDrawing(),
"Can only draw in drawing phase");
//TODO: This is going to copy back pixels that we might end up
// drawing over anyway. It would be nice if we could avoid
// this duplication.
mContentClient->SyncFrontBufferToBackBuffer();
bool canUseOpaqueSurface = CanUseOpaqueSurface();
ContentType contentType =
canUseOpaqueSurface ? GFX_CONTENT_COLOR :
GFX_CONTENT_COLOR_ALPHA;
{
uint32_t flags = 0;
#ifndef MOZ_WIDGET_ANDROID
if (ClientManager()->CompositorMightResample()) {
flags |= ThebesLayerBuffer::PAINT_WILL_RESAMPLE;
}
if (!(flags & ThebesLayerBuffer::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= ThebesLayerBuffer::PAINT_WILL_RESAMPLE;
}
}
#endif
PaintState state =
mContentClient->BeginPaintBuffer(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);
PaintBuffer(state.mContext,
state.mRegionToDraw, extendedDrawRegion, state.mRegionToInvalidate,
state.mDidSelfCopy, state.mClip);
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) PaintThebes", this));
Mutated();
} 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?");
}
}
}
void
ThebesLayerComposite::RenderLayer(const nsIntRect& aClipRect)
{
if (!mBuffer || !mBuffer->IsAttached()) {
return;
}
PROFILER_LABEL("ThebesLayerComposite", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
MOZ_ASSERT(mBuffer->GetCompositor() == mCompositeManager->GetCompositor() &&
mBuffer->GetLayer() == this,
"buffer is corrupted");
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> surf = mBuffer->GetAsSurface();
if (surf) {
WriteSnapshotToDumpFile(this, surf);
}
}
#endif
EffectChain effectChain(this);
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
AddBlendModeEffect(effectChain);
const nsIntRegion& visibleRegion = GetEffectiveVisibleRegion();
TiledLayerProperties tiledLayerProps;
if (mRequiresTiledProperties) {
tiledLayerProps.mVisibleRegion = visibleRegion;
tiledLayerProps.mEffectiveResolution = GetEffectiveResolution();
tiledLayerProps.mValidRegion = mValidRegion;
}
mBuffer->SetPaintWillResample(MayResample());
mBuffer->Composite(effectChain,
GetEffectiveOpacity(),
GetEffectiveTransform(),
gfx::Filter::LINEAR,
clipRect,
&visibleRegion,
mRequiresTiledProperties ? &tiledLayerProps
: nullptr);
mBuffer->BumpFlashCounter();
if (mRequiresTiledProperties) {
mValidRegion = tiledLayerProps.mValidRegion;
}
mCompositeManager->GetCompositor()->MakeCurrent();
}
void
ClientThebesLayer::PaintThebes()
{
PROFILER_LABEL("ClientThebesLayer", "PaintThebes");
NS_ASSERTION(ClientManager()->InDrawing(),
"Can only draw in drawing phase");
{
mContentClient->PrepareFrame();
uint32_t flags = 0;
#ifndef MOZ_WIDGET_ANDROID
if (ClientManager()->CompositorMightResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
if (!(flags & RotatedContentBuffer::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
}
#endif
PaintState state =
mContentClient->BeginPaintBuffer(this, flags);
mValidRegion.Sub(mValidRegion, state.mRegionToInvalidate);
if (DrawTarget* target = mContentClient->BorrowDrawTargetForPainting(this, state)) {
// 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());
SetAntialiasingFlags(this, target);
nsRefPtr<gfxContext> ctx = gfxContext::ContextForDrawTarget(target);
PaintBuffer(ctx,
state.mRegionToDraw, state.mRegionToDraw, state.mRegionToInvalidate,
state.mDidSelfCopy, state.mClip);
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) PaintThebes", this));
Mutated();
ctx = nullptr;
mContentClient->ReturnDrawTargetToBuffer(target);
} 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?");
}
}
}
uint32_t
ClientPaintedLayer::GetPaintFlags()
{
uint32_t flags = RotatedContentBuffer::PAINT_CAN_DRAW_ROTATED;
#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
if (ClientManager()->CompositorMightResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
if (!(flags & RotatedContentBuffer::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
}
#endif
return flags;
}
void
PaintedLayerComposite::RenderLayer(const gfx::IntRect& aClipRect)
{
if (!mBuffer || !mBuffer->IsAttached()) {
return;
}
PROFILER_LABEL("PaintedLayerComposite", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
Compositor* compositor = mCompositeManager->GetCompositor();
MOZ_ASSERT(mBuffer->GetCompositor() == compositor &&
mBuffer->GetLayer() == this,
"buffer is corrupted");
const nsIntRegion& visibleRegion = GetEffectiveVisibleRegion();
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> surf = mBuffer->GetAsSurface();
if (surf) {
WriteSnapshotToDumpFile(this, surf);
}
}
#endif
RenderWithAllMasks(this, compositor, aClipRect,
[&](EffectChain& effectChain, const Rect& clipRect) {
mBuffer->SetPaintWillResample(MayResample());
mBuffer->Composite(this, effectChain,
GetEffectiveOpacity(),
GetEffectiveTransform(),
GetEffectFilter(),
clipRect,
&visibleRegion);
});
mBuffer->BumpFlashCounter();
compositor->MakeCurrent();
}
void
ClientTiledPaintedLayer::RenderLayer()
{
LayerManager::DrawPaintedLayerCallback callback =
ClientManager()->GetPaintedLayerCallback();
void *data = ClientManager()->GetPaintedLayerCallbackData();
if (!callback) {
ClientManager()->SetTransactionIncomplete();
return;
}
if (!mContentClient) {
mContentClient = new TiledContentClient(this, ClientManager());
mContentClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
if (mContentClient->mTiledBuffer.HasFormatChanged()) {
mValidRegion = nsIntRegion();
mContentClient->mTiledBuffer.ResetPaintedAndValidState();
}
TILING_LOG("TILING %p: Initial visible region %s\n", this, Stringify(mVisibleRegion).c_str());
TILING_LOG("TILING %p: Initial valid region %s\n", this, Stringify(mValidRegion).c_str());
TILING_LOG("TILING %p: Initial low-precision valid region %s\n", this, Stringify(mLowPrecisionValidRegion).c_str());
nsIntRegion neededRegion = mVisibleRegion;
#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
// This is handled by PadDrawTargetOutFromRegion in TiledContentClient for mobile
if (MayResample()) {
// If we're resampling then bilinear filtering can read up to 1 pixel
// outside of our texture coords. Make the visible region a single rect,
// and pad it out by 1 pixel (restricted to tile boundaries) so that
// we always have valid content or transparent pixels to sample from.
nsIntRect bounds = neededRegion.GetBounds();
nsIntRect wholeTiles = bounds;
wholeTiles.Inflate(nsIntSize(
gfxPlatform::GetPlatform()->GetTileWidth(),
gfxPlatform::GetPlatform()->GetTileHeight()));
nsIntRect padded = bounds;
padded.Inflate(1);
padded.IntersectRect(padded, wholeTiles);
neededRegion = padded;
}
#endif
nsIntRegion invalidRegion;
invalidRegion.Sub(neededRegion, mValidRegion);
if (invalidRegion.IsEmpty()) {
EndPaint();
return;
}
if (!ClientManager()->IsRepeatTransaction()) {
// Only paint the mask layer on the first transaction.
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
// In some cases we can take a fast path and just be done with it.
if (UseFastPath()) {
TILING_LOG("TILING %p: Taking fast-path\n", this);
mValidRegion = neededRegion;
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion, callback, data);
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
return;
}
// For more complex cases we need to calculate a bunch of metrics before we
// can do the paint.
BeginPaint();
if (mPaintData.mPaintFinished) {
return;
}
// Make sure that tiles that fall outside of the visible region or outside of the
// critical displayport are discarded on the first update. Also make sure that we
// only draw stuff inside the critical displayport on the first update.
mValidRegion.And(mValidRegion, neededRegion);
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
mValidRegion.And(mValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
invalidRegion.And(invalidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_LOG("TILING %p: First-transaction valid region %s\n", this, Stringify(mValidRegion).c_str());
TILING_LOG("TILING %p: First-transaction invalid region %s\n", this, Stringify(invalidRegion).c_str());
} else {
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
invalidRegion.And(invalidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_LOG("TILING %p: Repeat-transaction invalid region %s\n", this, Stringify(invalidRegion).c_str());
}
nsIntRegion lowPrecisionInvalidRegion;
if (gfxPrefs::UseLowPrecisionBuffer()) {
// Calculate the invalid region for the low precision buffer. Make sure
// to remove the valid high-precision area so we don't double-paint it.
lowPrecisionInvalidRegion.Sub(neededRegion, mLowPrecisionValidRegion);
lowPrecisionInvalidRegion.Sub(lowPrecisionInvalidRegion, mValidRegion);
}
TILING_LOG("TILING %p: Low-precision invalid region %s\n", this, Stringify(lowPrecisionInvalidRegion).c_str());
bool updatedHighPrecision = RenderHighPrecision(invalidRegion,
neededRegion,
callback, data);
if (updatedHighPrecision) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
if (!mPaintData.mPaintFinished) {
// There is still more high-res stuff to paint, so we're not
// done yet. A subsequent transaction will take care of this.
ClientManager()->SetRepeatTransaction();
return;
}
}
// If there is nothing to draw in low-precision, then we're done.
if (lowPrecisionInvalidRegion.IsEmpty()) {
EndPaint();
return;
}
if (updatedHighPrecision) {
// If there are low precision updates, but we just did some high-precision
// updates, then mark the paint as unfinished and request a repeat transaction.
// This is so that we don't perform low-precision updates in the same transaction
// as high-precision updates.
TILING_LOG("TILING %p: Scheduling repeat transaction for low-precision painting\n", this);
ClientManager()->SetRepeatTransaction();
mPaintData.mLowPrecisionPaintCount = 1;
mPaintData.mPaintFinished = false;
return;
}
bool updatedLowPrecision = RenderLowPrecision(lowPrecisionInvalidRegion,
neededRegion,
callback, data);
if (updatedLowPrecision) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::LOW_PRECISION_TILED_BUFFER);
if (!mPaintData.mPaintFinished) {
// There is still more low-res stuff to paint, so we're not
// done yet. A subsequent transaction will take care of this.
ClientManager()->SetRepeatTransaction();
return;
}
}
// If we get here, we've done all the high- and low-precision
// paints we wanted to do, so we can finish the paint and chill.
EndPaint();
}
void
BasicThebesLayer::PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback)
{
PROFILER_LABEL("BasicThebesLayer", "PaintThebes");
NS_ASSERTION(BasicManager()->InDrawing(),
"Can only draw in drawing phase");
nsRefPtr<gfxASurface> targetSurface = aContext->CurrentSurface();
if (!mContentClient) {
// we pass a null pointer for the Forwarder argument, which means
// this will not have a ContentHost on the other side.
mContentClient = new ContentClientBasic(nullptr, BasicManager());
}
nsTArray<ReadbackProcessor::Update> readbackUpdates;
if (aReadback && UsedForReadback()) {
aReadback->GetThebesLayerUpdates(this, &readbackUpdates);
}
//TODO: This is going to copy back pixels that we might end up
// drawing over anyway. It would be nice if we could avoid
// this duplication.
mContentClient->SyncFrontBufferToBackBuffer();
bool canUseOpaqueSurface = CanUseOpaqueSurface();
ContentType contentType =
canUseOpaqueSurface ? gfxASurface::CONTENT_COLOR :
gfxASurface::CONTENT_COLOR_ALPHA;
float opacity = GetEffectiveOpacity();
if (!BasicManager()->IsRetained()) {
NS_ASSERTION(readbackUpdates.IsEmpty(), "Can't do readback for non-retained layer");
mValidRegion.SetEmpty();
mContentClient->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, CLIP_NONE, 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;
}
{
uint32_t flags = 0;
#ifndef MOZ_WIDGET_ANDROID
if (BasicManager()->CompositorMightResample()) {
flags |= ThebesLayerBuffer::PAINT_WILL_RESAMPLE;
}
if (!(flags & ThebesLayerBuffer::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= ThebesLayerBuffer::PAINT_WILL_RESAMPLE;
}
}
#endif
if (mDrawAtomically) {
flags |= ThebesLayerBuffer::PAINT_NO_ROTATION;
}
PaintState state =
mContentClient->BeginPaintBuffer(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,
state.mClip,
aCallback, aCallbackData);
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) PaintThebes", this));
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();
// Pull out the mask surface and transform here, because the mask
// is internal to basic layers
AutoMaskData mask;
gfxASurface* maskSurface = nullptr;
const gfxMatrix* maskTransform = nullptr;
if (GetMaskData(aMaskLayer, &mask)) {
maskSurface = mask.GetSurface();
maskTransform = &mask.GetTransform();
}
if (!IsHidden() && !clipExtents.IsEmpty()) {
AutoSetOperator setOperator(aContext, GetOperator());
mContentClient->DrawTo(this, aContext, opacity, maskSurface, maskTransform);
}
for (uint32_t 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));
mContentClient->DrawTo(this, ctx, 1.0, maskSurface, maskTransform);
update.mLayer->GetSink()->EndUpdate(ctx, update.mUpdateRect + offset);
}
}
}
void
BasicThebesLayer::Validate(LayerManager::DrawThebesLayerCallback aCallback,
void* aCallbackData)
{
if (!mContentClient) {
// This client will have a null Forwarder, which means it will not have
// a ContentHost on the other side.
mContentClient = new ContentClientBasic();
}
if (!BasicManager()->IsRetained()) {
return;
}
uint32_t flags = 0;
#ifndef MOZ_WIDGET_ANDROID
if (BasicManager()->CompositorMightResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
if (!(flags & RotatedContentBuffer::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
}
#endif
if (mDrawAtomically) {
flags |= RotatedContentBuffer::PAINT_NO_ROTATION;
}
PaintState state =
mContentClient->BeginPaintBuffer(this, flags);
mValidRegion.Sub(mValidRegion, state.mRegionToInvalidate);
if (DrawTarget* target = mContentClient->BorrowDrawTargetForPainting(state)) {
// 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());
SetAntialiasingFlags(this, target);
RenderTraceInvalidateStart(this, "FFFF00", state.mRegionToDraw.GetBounds());
nsRefPtr<gfxContext> ctx = gfxContext::ContextForDrawTarget(target);
PaintBuffer(ctx,
state.mRegionToDraw, state.mRegionToDraw, state.mRegionToInvalidate,
state.mDidSelfCopy,
state.mClip,
aCallback, aCallbackData);
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) PaintThebes", this));
Mutated();
ctx = nullptr;
mContentClient->ReturnDrawTargetToBuffer(target);
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?");
}
}
void
ClientThebesLayer::PaintThebes()
{
PROFILER_LABEL("ClientThebesLayer", "PaintThebes");
NS_ASSERTION(ClientManager()->InDrawing(),
"Can only draw in drawing phase");
uint32_t flags = RotatedContentBuffer::PAINT_CAN_DRAW_ROTATED;
#ifndef MOZ_WIDGET_ANDROID
if (ClientManager()->CompositorMightResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
if (!(flags & RotatedContentBuffer::PAINT_WILL_RESAMPLE)) {
if (MayResample()) {
flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
}
}
#endif
PaintState state =
mContentClient->BeginPaintBuffer(this, flags);
mValidRegion.Sub(mValidRegion, state.mRegionToInvalidate);
if (!state.mRegionToDraw.IsEmpty() && !ClientManager()->GetThebesLayerCallback()) {
ClientManager()->SetTransactionIncomplete();
return;
}
// 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());
bool didUpdate = false;
RotatedContentBuffer::DrawIterator iter;
while (DrawTarget* target = mContentClient->BorrowDrawTargetForPainting(state, &iter)) {
SetAntialiasingFlags(this, target);
nsRefPtr<gfxContext> ctx = gfxContext::ContextForDrawTarget(target);
ClientManager()->GetThebesLayerCallback()(this,
ctx,
iter.mDrawRegion,
state.mClip,
state.mRegionToInvalidate,
ClientManager()->GetThebesLayerCallbackData());
ctx = nullptr;
mContentClient->ReturnDrawTargetToBuffer(target);
didUpdate = true;
}
if (didUpdate) {
Mutated();
mValidRegion.Or(mValidRegion, state.mRegionToDraw);
ContentClientRemote* contentClientRemote = static_cast<ContentClientRemote*>(mContentClient.get());
MOZ_ASSERT(contentClientRemote->GetIPDLActor());
// Hold(this) ensures this layer is kept alive through the current transaction
// The ContentClient assumes this layer is kept alive (e.g., in CreateBuffer),
// so deleting this Hold for whatever reason will break things.
ClientManager()->Hold(this);
contentClientRemote->Updated(state.mRegionToDraw,
mVisibleRegion,
state.mDidSelfCopy);
}
}