bool
ClientTiledThebesLayer::UseFastPath()
{
const FrameMetrics& parentMetrics = GetParent()->GetFrameMetrics();
bool multipleTransactionsNeeded = gfxPrefs::UseProgressiveTilePainting()
|| gfxPrefs::UseLowPrecisionBuffer()
|| !parentMetrics.mCriticalDisplayPort.IsEmpty();
bool isFixed = GetIsFixedPosition() || GetParent()->GetIsFixedPosition();
return !multipleTransactionsNeeded || isFixed || parentMetrics.mDisplayPort.IsEmpty();
}
bool
ClientTiledPaintedLayer::UseFastPath()
{
LayerMetricsWrapper scrollAncestor;
GetAncestorLayers(&scrollAncestor, nullptr);
if (!scrollAncestor) {
return true;
}
const FrameMetrics& parentMetrics = scrollAncestor.Metrics();
bool multipleTransactionsNeeded = gfxPlatform::GetPlatform()->UseProgressivePaint()
|| gfxPrefs::UseLowPrecisionBuffer()
|| !parentMetrics.GetCriticalDisplayPort().IsEmpty();
bool isFixed = GetIsFixedPosition() || GetParent()->GetIsFixedPosition();
return !multipleTransactionsNeeded || isFixed || parentMetrics.GetDisplayPort().IsEmpty();
}
bool
ClientTiledPaintedLayer::UseProgressiveDraw() {
if (!gfxPlatform::GetPlatform()->UseProgressivePaint()) {
// pref is disabled, so never do progressive
return false;
}
if (!mContentClient->GetTiledBuffer()->SupportsProgressiveUpdate()) {
return false;
}
if (ClientManager()->HasShadowTarget()) {
// This condition is true when we are in a reftest scenario. We don't want
// to draw progressively here because it can cause intermittent reftest
// failures because the harness won't wait for all the tiles to be drawn.
return false;
}
if (mPaintData.mCriticalDisplayPort.IsEmpty()) {
// This catches three scenarios:
// 1) This layer doesn't have a scrolling ancestor
// 2) This layer is subject to OMTA transforms
// 3) Low-precision painting is disabled
// In all of these cases, we don't want to draw this layer progressively.
return false;
}
if (GetIsFixedPosition() || GetParent()->GetIsFixedPosition()) {
// This layer is fixed-position and so even if it does have a scrolling
// ancestor it will likely be entirely on-screen all the time, so we
// should draw it all at once
return false;
}
if (ClientManager()->AsyncPanZoomEnabled()) {
LayerMetricsWrapper scrollAncestor;
GetAncestorLayers(&scrollAncestor, nullptr, nullptr);
MOZ_ASSERT(scrollAncestor); // because mPaintData.mCriticalDisplayPort is non-empty
const FrameMetrics& parentMetrics = scrollAncestor.Metrics();
if (!IsScrollingOnCompositor(parentMetrics)) {
return false;
}
}
return true;
}
bool
ClientTiledPaintedLayer::UseFastPath()
{
LayerMetricsWrapper scrollAncestor;
GetAncestorLayers(&scrollAncestor, nullptr);
if (!scrollAncestor) {
return true;
}
const FrameMetrics& parentMetrics = scrollAncestor.Metrics();
bool multipleTransactionsNeeded = gfxPlatform::GetPlatform()->UseProgressivePaint()
|| gfxPrefs::UseLowPrecisionBuffer()
|| !parentMetrics.GetCriticalDisplayPort().IsEmpty();
bool isFixed = GetIsFixedPosition() || GetParent()->GetIsFixedPosition();
bool isScrollable = parentMetrics.IsScrollable();
return !multipleTransactionsNeeded || isFixed || !isScrollable
#if !defined(MOZ_WIDGET_ANDROID) || defined(MOZ_ANDROID_APZ)
|| !IsScrollingOnCompositor(parentMetrics)
#endif
;
}
void
ClientTiledThebesLayer::RenderLayer()
{
LayerManager::DrawThebesLayerCallback callback =
ClientManager()->GetThebesLayerCallback();
void *data = ClientManager()->GetThebesLayerCallbackData();
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();
}
TILING_PRLOG_OBJ(("TILING 0x%p: Initial visible region %s\n", this, tmpstr.get()), mVisibleRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: Initial valid region %s\n", this, tmpstr.get()), mValidRegion);
nsIntRegion invalidRegion = mVisibleRegion;
invalidRegion.Sub(invalidRegion, mValidRegion);
if (invalidRegion.IsEmpty()) {
EndPaint(true);
return;
}
// Only paint the mask layer on the first transaction.
if (GetMaskLayer() && !ClientManager()->IsRepeatTransaction()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
bool isFixed = GetIsFixedPosition() || GetParent()->GetIsFixedPosition();
// Fast path for no progressive updates, no low-precision updates and no
// critical display-port set, or no display-port set, or this is a fixed
// position layer/contained in a fixed position layer
const FrameMetrics& parentMetrics = GetParent()->GetFrameMetrics();
if ((!gfxPrefs::UseProgressiveTilePainting() &&
!gfxPrefs::UseLowPrecisionBuffer() &&
parentMetrics.mCriticalDisplayPort.IsEmpty()) ||
parentMetrics.mDisplayPort.IsEmpty() ||
isFixed) {
mValidRegion = mVisibleRegion;
NS_ASSERTION(!ClientManager()->IsRepeatTransaction(), "Didn't paint our mask layer");
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
callback, data);
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
return;
}
// Calculate everything we need to perform the paint.
BeginPaint();
if (mPaintData.mPaintFinished) {
return;
}
TILING_PRLOG_OBJ(("TILING 0x%p: Valid region %s\n", this, tmpstr.get()), mValidRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: Visible region %s\n", this, tmpstr.get()), mVisibleRegion);
// Make sure that tiles that fall outside of the visible region are
// discarded on the first update.
if (!ClientManager()->IsRepeatTransaction()) {
mValidRegion.And(mValidRegion, mVisibleRegion);
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
// Make sure that tiles that fall outside of the critical displayport are
// discarded on the first update.
mValidRegion.And(mValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
}
nsIntRegion lowPrecisionInvalidRegion;
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
if (gfxPrefs::UseLowPrecisionBuffer()) {
// Calculate the invalid region for the low precision buffer
lowPrecisionInvalidRegion.Sub(mVisibleRegion, mLowPrecisionValidRegion);
// Remove the valid region from the low precision valid region (we don't
// validate this part of the low precision buffer).
lowPrecisionInvalidRegion.Sub(lowPrecisionInvalidRegion, mValidRegion);
}
// Clip the invalid region to the critical display-port
invalidRegion.And(invalidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
if (invalidRegion.IsEmpty() && lowPrecisionInvalidRegion.IsEmpty()) {
EndPaint(true);
return;
}
}
TILING_PRLOG_OBJ(("TILING 0x%p: Invalid region %s\n", this, tmpstr.get()), invalidRegion);
if (!invalidRegion.IsEmpty() && mPaintData.mLowPrecisionPaintCount == 0) {
bool updatedBuffer = false;
// Only draw progressively when the resolution is unchanged.
if (gfxPrefs::UseProgressiveTilePainting() &&
!ClientManager()->HasShadowTarget() &&
mContentClient->mTiledBuffer.GetFrameResolution() == mPaintData.mResolution) {
// Store the old valid region, then clear it before painting.
// We clip the old valid region to the visible region, as it only gets
// used to decide stale content (currently valid and previously visible)
nsIntRegion oldValidRegion = mContentClient->mTiledBuffer.GetValidRegion();
oldValidRegion.And(oldValidRegion, mVisibleRegion);
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
oldValidRegion.And(oldValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_PRLOG_OBJ(("TILING 0x%p: Progressive update with old valid region %s\n", this, tmpstr.get()), oldValidRegion);
updatedBuffer =
mContentClient->mTiledBuffer.ProgressiveUpdate(mValidRegion, invalidRegion,
oldValidRegion, &mPaintData,
callback, data);
} else {
updatedBuffer = true;
mValidRegion = mVisibleRegion;
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
mValidRegion.And(mValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_PRLOG_OBJ(("TILING 0x%p: Painting: valid region %s\n", this, tmpstr.get()), mValidRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: and invalid region %s\n", this, tmpstr.get()), invalidRegion);
mContentClient->mTiledBuffer.SetFrameResolution(mPaintData.mResolution);
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
callback, data);
}
if (updatedBuffer) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
// If there are low precision updates, mark the paint as unfinished and
// request a repeat transaction.
if (!lowPrecisionInvalidRegion.IsEmpty() && mPaintData.mPaintFinished) {
ClientManager()->SetRepeatTransaction();
mPaintData.mLowPrecisionPaintCount = 1;
mPaintData.mPaintFinished = false;
}
// Return so that low precision updates aren't performed in the same
// transaction as high-precision updates.
EndPaint(false);
return;
}
}
TILING_PRLOG_OBJ(("TILING 0x%p: Low-precision valid region is %s\n", this, tmpstr.get()), mLowPrecisionValidRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: Low-precision invalid region is %s\n", this, tmpstr.get()), lowPrecisionInvalidRegion);
// Render the low precision buffer, if there's area to invalidate and the
// visible region is larger than the critical display port.
bool updatedLowPrecision = false;
if (!lowPrecisionInvalidRegion.IsEmpty() &&
!nsIntRegion(LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort)).Contains(mVisibleRegion)) {
nsIntRegion oldValidRegion =
mContentClient->mLowPrecisionTiledBuffer.GetValidRegion();
oldValidRegion.And(oldValidRegion, mVisibleRegion);
// If the frame resolution or format have changed, invalidate the buffer
if (mContentClient->mLowPrecisionTiledBuffer.GetFrameResolution() != mPaintData.mResolution ||
mContentClient->mLowPrecisionTiledBuffer.HasFormatChanged()) {
if (!mLowPrecisionValidRegion.IsEmpty()) {
updatedLowPrecision = true;
}
oldValidRegion.SetEmpty();
mLowPrecisionValidRegion.SetEmpty();
mContentClient->mLowPrecisionTiledBuffer.SetFrameResolution(mPaintData.mResolution);
lowPrecisionInvalidRegion = mVisibleRegion;
}
// Invalidate previously valid content that is no longer visible
if (mPaintData.mLowPrecisionPaintCount == 1) {
mLowPrecisionValidRegion.And(mLowPrecisionValidRegion, mVisibleRegion);
}
mPaintData.mLowPrecisionPaintCount++;
// Remove the valid high-precision region from the invalid low-precision
// region. We don't want to spend time drawing things twice.
lowPrecisionInvalidRegion.Sub(lowPrecisionInvalidRegion, mValidRegion);
if (!lowPrecisionInvalidRegion.IsEmpty()) {
updatedLowPrecision = mContentClient->mLowPrecisionTiledBuffer
.ProgressiveUpdate(mLowPrecisionValidRegion,
lowPrecisionInvalidRegion,
oldValidRegion, &mPaintData,
callback, data);
}
} else if (!mLowPrecisionValidRegion.IsEmpty()) {
// Clear the low precision tiled buffer
updatedLowPrecision = true;
mLowPrecisionValidRegion.SetEmpty();
mContentClient->mLowPrecisionTiledBuffer.ResetPaintedAndValidState();
}
// We send a Painted callback if we clear the valid region of the low
// precision buffer, so that the shadow buffer's valid region can be updated
// and the associated resources can be freed.
if (updatedLowPrecision) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::LOW_PRECISION_TILED_BUFFER);
}
EndPaint(false);
}
nsACString&
Layer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
aTo += aPrefix;
aTo += nsPrintfCString("%s%s (0x%p)", mManager->Name(), Name(), this);
layers::PrintInfo(aTo, AsLayerComposite());
if (mUseClipRect) {
AppendToString(aTo, mClipRect, " [clip=", "]");
}
if (1.0 != mPostXScale || 1.0 != mPostYScale) {
aTo.AppendPrintf(" [postScale=%g, %g]", mPostXScale, mPostYScale);
}
if (!mTransform.IsIdentity()) {
AppendToString(aTo, mTransform, " [transform=", "]");
}
if (!mVisibleRegion.IsEmpty()) {
AppendToString(aTo, mVisibleRegion, " [visible=", "]");
} else {
aTo += " [not visible]";
}
if (!mEventRegions.mHitRegion.IsEmpty()) {
AppendToString(aTo, mEventRegions.mHitRegion, " [hitregion=", "]");
}
if (!mEventRegions.mDispatchToContentHitRegion.IsEmpty()) {
AppendToString(aTo, mEventRegions.mDispatchToContentHitRegion, " [dispatchtocontentregion=", "]");
}
if (1.0 != mOpacity) {
aTo.AppendPrintf(" [opacity=%g]", mOpacity);
}
if (GetContentFlags() & CONTENT_OPAQUE) {
aTo += " [opaqueContent]";
}
if (GetContentFlags() & CONTENT_COMPONENT_ALPHA) {
aTo += " [componentAlpha]";
}
if (GetScrollbarDirection() == VERTICAL) {
aTo.AppendPrintf(" [vscrollbar=%lld]", GetScrollbarTargetContainerId());
}
if (GetScrollbarDirection() == HORIZONTAL) {
aTo.AppendPrintf(" [hscrollbar=%lld]", GetScrollbarTargetContainerId());
}
if (GetIsFixedPosition()) {
aTo.AppendPrintf(" [isFixedPosition anchor=%f,%f margin=%f,%f,%f,%f]", mAnchor.x, mAnchor.y,
mMargins.top, mMargins.right, mMargins.bottom, mMargins.left);
}
if (GetIsStickyPosition()) {
aTo.AppendPrintf(" [isStickyPosition scrollId=%d outer=%f,%f %fx%f "
"inner=%f,%f %fx%f]", mStickyPositionData->mScrollId,
mStickyPositionData->mOuter.x, mStickyPositionData->mOuter.y,
mStickyPositionData->mOuter.width, mStickyPositionData->mOuter.height,
mStickyPositionData->mInner.x, mStickyPositionData->mInner.y,
mStickyPositionData->mInner.width, mStickyPositionData->mInner.height);
}
if (mMaskLayer) {
aTo.AppendPrintf(" [mMaskLayer=%p]", mMaskLayer.get());
}
return aTo;
}