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29301de2b0
SingleTiledContentClient has it's own file and this helps make ContentClient slimmer. --HG-- rename : gfx/layers/client/TiledContentClient.cpp => gfx/layers/client/MultiTiledContentClient.cpp rename : gfx/layers/client/TiledContentClient.h => gfx/layers/client/MultiTiledContentClient.h extra : rebase_source : 7c70cfa04f9faa840b2aa8a81680486e4ed0245e
781 lines
26 KiB
C++
781 lines
26 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/layers/TiledContentClient.h"
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#include <math.h> // for ceil, ceilf, floor
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#include <algorithm>
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#include "ClientTiledPaintedLayer.h" // for ClientTiledPaintedLayer
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#include "GeckoProfiler.h" // for AUTO_PROFILER_LABEL
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#include "ClientLayerManager.h" // for ClientLayerManager
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#include "gfxContext.h" // for gfxContext, etc
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#include "gfxPlatform.h" // for gfxPlatform
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#include "gfxPrefs.h" // for gfxPrefs
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#include "gfxRect.h" // for gfxRect
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#include "mozilla/MathAlgorithms.h" // for Abs
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/gfx/Rect.h" // for Rect
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#include "mozilla/gfx/Tools.h" // for BytesPerPixel
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#include "mozilla/layers/CompositableForwarder.h"
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#include "mozilla/layers/CompositorBridgeChild.h" // for CompositorBridgeChild
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#include "mozilla/layers/LayerMetricsWrapper.h"
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#include "mozilla/layers/ShadowLayers.h" // for ShadowLayerForwarder
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#include "mozilla/layers/PaintThread.h" // for PaintThread
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#include "TextureClientPool.h"
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#include "nsDebug.h" // for NS_ASSERTION
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#include "nsISupportsImpl.h" // for gfxContext::AddRef, etc
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#include "nsExpirationTracker.h" // for nsExpirationTracker
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#include "nsMathUtils.h" // for NS_lroundf
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#include "LayersLogging.h"
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#include "UnitTransforms.h" // for TransformTo
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#include "mozilla/UniquePtr.h"
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// This is the minimum area that we deem reasonable to copy from the front buffer to the
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// back buffer on tile updates. If the valid region is smaller than this, we just
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// redraw it and save on the copy (and requisite surface-locking involved).
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#define MINIMUM_TILE_COPY_AREA (1.f/16.f)
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#ifdef GFX_TILEDLAYER_DEBUG_OVERLAY
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#include "cairo.h"
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#include <sstream>
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using mozilla::layers::Layer;
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static void DrawDebugOverlay(mozilla::gfx::DrawTarget* dt, int x, int y, int width, int height)
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{
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gfxContext c(dt);
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// Draw border
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c.NewPath();
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c.SetDeviceColor(Color(0.f, 0.f, 0.f));
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c.Rectangle(gfxRect(0, 0, width, height));
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c.Stroke();
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// Build tile description
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std::stringstream ss;
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ss << x << ", " << y;
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// Draw text using cairo toy text API
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// XXX: this drawing will silently fail if |dt| doesn't have a Cairo backend
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cairo_t* cr = gfxFont::RefCairo(dt);
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cairo_set_font_size(cr, 25);
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cairo_text_extents_t extents;
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cairo_text_extents(cr, ss.str().c_str(), &extents);
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int textWidth = extents.width + 6;
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c.NewPath();
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c.SetDeviceColor(Color(0.f, 0.f, 0.f));
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c.Rectangle(gfxRect(gfxPoint(2,2),gfxSize(textWidth, 30)));
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c.Fill();
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c.NewPath();
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c.SetDeviceColor(Color(1.0, 0.0, 0.0));
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c.Rectangle(gfxRect(gfxPoint(2,2),gfxSize(textWidth, 30)));
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c.Stroke();
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c.NewPath();
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cairo_move_to(cr, 4, 28);
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cairo_show_text(cr, ss.str().c_str());
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}
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#endif
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namespace mozilla {
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using namespace gfx;
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namespace layers {
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SharedFrameMetricsHelper::SharedFrameMetricsHelper()
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: mLastProgressiveUpdateWasLowPrecision(false)
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, mProgressiveUpdateWasInDanger(false)
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{
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MOZ_COUNT_CTOR(SharedFrameMetricsHelper);
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}
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SharedFrameMetricsHelper::~SharedFrameMetricsHelper()
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{
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MOZ_COUNT_DTOR(SharedFrameMetricsHelper);
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}
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static inline bool
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FuzzyEquals(float a, float b) {
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return (fabsf(a - b) < 1e-6);
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}
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static AsyncTransform
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ComputeViewTransform(const FrameMetrics& aContentMetrics, const FrameMetrics& aCompositorMetrics)
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{
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// This is basically the same code as AsyncPanZoomController::GetCurrentAsyncTransform
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// but with aContentMetrics used in place of mLastContentPaintMetrics, because they
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// should be equivalent, modulo race conditions while transactions are inflight.
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ParentLayerPoint translation = (aCompositorMetrics.GetScrollOffset() - aContentMetrics.GetScrollOffset())
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* aCompositorMetrics.GetZoom();
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return AsyncTransform(aCompositorMetrics.GetAsyncZoom(), -translation);
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}
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bool
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SharedFrameMetricsHelper::UpdateFromCompositorFrameMetrics(
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const LayerMetricsWrapper& aLayer,
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bool aHasPendingNewThebesContent,
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bool aLowPrecision,
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AsyncTransform& aViewTransform)
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{
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MOZ_ASSERT(aLayer);
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CompositorBridgeChild* compositor = nullptr;
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if (aLayer.Manager() &&
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aLayer.Manager()->AsClientLayerManager()) {
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compositor = aLayer.Manager()->AsClientLayerManager()->GetCompositorBridgeChild();
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}
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if (!compositor) {
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return false;
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}
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const FrameMetrics& contentMetrics = aLayer.Metrics();
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FrameMetrics compositorMetrics;
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if (!compositor->LookupCompositorFrameMetrics(contentMetrics.GetScrollId(),
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compositorMetrics)) {
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return false;
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}
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aViewTransform = ComputeViewTransform(contentMetrics, compositorMetrics);
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// Reset the checkerboard risk flag when switching to low precision
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// rendering.
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if (aLowPrecision && !mLastProgressiveUpdateWasLowPrecision) {
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// Skip low precision rendering until we're at risk of checkerboarding.
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if (!mProgressiveUpdateWasInDanger) {
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TILING_LOG("TILING: Aborting low-precision rendering because not at risk of checkerboarding\n");
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return true;
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}
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mProgressiveUpdateWasInDanger = false;
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}
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mLastProgressiveUpdateWasLowPrecision = aLowPrecision;
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// Always abort updates if the resolution has changed. There's no use
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// in drawing at the incorrect resolution.
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if (!FuzzyEquals(compositorMetrics.GetZoom().xScale, contentMetrics.GetZoom().xScale) ||
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!FuzzyEquals(compositorMetrics.GetZoom().yScale, contentMetrics.GetZoom().yScale)) {
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TILING_LOG("TILING: Aborting because resolution changed from %s to %s\n",
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ToString(contentMetrics.GetZoom()).c_str(), ToString(compositorMetrics.GetZoom()).c_str());
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return true;
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}
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// Never abort drawing if we can't be sure we've sent a more recent
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// display-port. If we abort updating when we shouldn't, we can end up
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// with blank regions on the screen and we open up the risk of entering
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// an endless updating cycle.
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if (fabsf(contentMetrics.GetScrollOffset().x - compositorMetrics.GetScrollOffset().x) <= 2 &&
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fabsf(contentMetrics.GetScrollOffset().y - compositorMetrics.GetScrollOffset().y) <= 2 &&
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fabsf(contentMetrics.GetDisplayPort().X() - compositorMetrics.GetDisplayPort().X()) <= 2 &&
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fabsf(contentMetrics.GetDisplayPort().Y() - compositorMetrics.GetDisplayPort().Y()) <= 2 &&
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fabsf(contentMetrics.GetDisplayPort().Width() - compositorMetrics.GetDisplayPort().Width()) <= 2 &&
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fabsf(contentMetrics.GetDisplayPort().Height() - compositorMetrics.GetDisplayPort().Height()) <= 2) {
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return false;
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}
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// When not a low precision pass and the page is in danger of checker boarding
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// abort update.
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if (!aLowPrecision && !mProgressiveUpdateWasInDanger) {
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bool scrollUpdatePending = contentMetrics.GetScrollOffsetUpdated() &&
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contentMetrics.GetScrollGeneration() != compositorMetrics.GetScrollGeneration();
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// If scrollUpdatePending is true, then that means the content-side
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// metrics has a new scroll offset that is going to be forced into the
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// compositor but it hasn't gotten there yet.
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// Even though right now comparing the metrics might indicate we're
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// about to checkerboard (and that's true), the checkerboarding will
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// disappear as soon as the new scroll offset update is processed
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// on the compositor side. To avoid leaving things in a low-precision
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// paint, we need to detect and handle this case (bug 1026756).
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if (!scrollUpdatePending && AboutToCheckerboard(contentMetrics, compositorMetrics)) {
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mProgressiveUpdateWasInDanger = true;
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return true;
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}
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}
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// Abort drawing stale low-precision content if there's a more recent
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// display-port in the pipeline.
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if (aLowPrecision && !aHasPendingNewThebesContent) {
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TILING_LOG("TILING: Aborting low-precision because of new pending content\n");
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return true;
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}
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return false;
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}
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bool
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SharedFrameMetricsHelper::AboutToCheckerboard(const FrameMetrics& aContentMetrics,
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const FrameMetrics& aCompositorMetrics)
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{
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// The size of the painted area is originally computed in layer pixels in layout, but then
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// converted to app units and then back to CSS pixels before being put in the FrameMetrics.
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// This process can introduce some rounding error, so we inflate the rect by one app unit
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// to account for that.
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CSSRect painted = (aContentMetrics.GetCriticalDisplayPort().IsEmpty()
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? aContentMetrics.GetDisplayPort()
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: aContentMetrics.GetCriticalDisplayPort())
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+ aContentMetrics.GetScrollOffset();
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painted.Inflate(CSSMargin::FromAppUnits(nsMargin(1, 1, 1, 1)));
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// Inflate the rect by the danger zone. See the description of the danger zone prefs
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// in AsyncPanZoomController.cpp for an explanation of this.
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CSSRect showing = CSSRect(aCompositorMetrics.GetScrollOffset(),
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aCompositorMetrics.CalculateBoundedCompositedSizeInCssPixels());
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showing.Inflate(LayerSize(gfxPrefs::APZDangerZoneX(), gfxPrefs::APZDangerZoneY())
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/ aCompositorMetrics.LayersPixelsPerCSSPixel());
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// Clamp both rects to the scrollable rect, because having either of those
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// exceed the scrollable rect doesn't make sense, and could lead to false
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// positives.
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painted = painted.Intersect(aContentMetrics.GetScrollableRect());
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showing = showing.Intersect(aContentMetrics.GetScrollableRect());
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if (!painted.Contains(showing)) {
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TILING_LOG("TILING: About to checkerboard; content %s\n", Stringify(aContentMetrics).c_str());
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TILING_LOG("TILING: About to checkerboard; painted %s\n", Stringify(painted).c_str());
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TILING_LOG("TILING: About to checkerboard; compositor %s\n", Stringify(aCompositorMetrics).c_str());
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TILING_LOG("TILING: About to checkerboard; showing %s\n", Stringify(showing).c_str());
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return true;
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}
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return false;
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}
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bool
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ClientTiledLayerBuffer::HasFormatChanged() const
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{
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SurfaceMode mode;
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gfxContentType content = GetContentType(&mode);
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return content != mLastPaintContentType ||
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mode != mLastPaintSurfaceMode;
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}
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gfxContentType
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ClientTiledLayerBuffer::GetContentType(SurfaceMode* aMode) const
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{
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gfxContentType content =
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mPaintedLayer.CanUseOpaqueSurface() ? gfxContentType::COLOR :
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gfxContentType::COLOR_ALPHA;
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SurfaceMode mode = mPaintedLayer.GetSurfaceMode();
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if (mode == SurfaceMode::SURFACE_COMPONENT_ALPHA) {
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#if defined(MOZ_GFX_OPTIMIZE_MOBILE)
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mode = SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA;
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#else
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if (!mPaintedLayer.GetParent() ||
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!mPaintedLayer.GetParent()->SupportsComponentAlphaChildren()) {
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mode = SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA;
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} else {
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content = gfxContentType::COLOR;
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}
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#endif
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} else if (mode == SurfaceMode::SURFACE_OPAQUE) {
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#if defined(MOZ_GFX_OPTIMIZE_MOBILE)
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if (IsLowPrecision()) {
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// If we're in low-res mode, drawing can sample from outside the visible
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// region. Make sure that we only sample transparency if that happens.
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mode = SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA;
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content = gfxContentType::COLOR_ALPHA;
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}
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#else
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if (mPaintedLayer.MayResample()) {
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mode = SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA;
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content = gfxContentType::COLOR_ALPHA;
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}
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#endif
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}
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if (aMode) {
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*aMode = mode;
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}
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return content;
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}
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class TileExpiry final : public nsExpirationTracker<TileClient, 3>
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{
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public:
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TileExpiry() : nsExpirationTracker<TileClient, 3>(1000, "TileExpiry") {}
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static void AddTile(TileClient* aTile)
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{
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if (!sTileExpiry) {
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sTileExpiry = MakeUnique<TileExpiry>();
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}
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sTileExpiry->AddObject(aTile);
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}
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static void RemoveTile(TileClient* aTile)
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{
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MOZ_ASSERT(sTileExpiry);
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sTileExpiry->RemoveObject(aTile);
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}
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static void Shutdown() {
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sTileExpiry = nullptr;
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}
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private:
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virtual void NotifyExpired(TileClient* aTile) override
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{
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aTile->DiscardBackBuffer();
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}
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static UniquePtr<TileExpiry> sTileExpiry;
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};
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UniquePtr<TileExpiry> TileExpiry::sTileExpiry;
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void ShutdownTileCache()
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{
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TileExpiry::Shutdown();
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}
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void
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TileClient::PrivateProtector::Set(TileClient * const aContainer, RefPtr<TextureClient> aNewValue)
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{
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if (mBuffer) {
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TileExpiry::RemoveTile(aContainer);
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}
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mBuffer = aNewValue;
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if (mBuffer) {
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TileExpiry::AddTile(aContainer);
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}
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}
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void
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TileClient::PrivateProtector::Set(TileClient * const aContainer, TextureClient* aNewValue)
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{
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Set(aContainer, RefPtr<TextureClient>(aNewValue));
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}
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// Placeholder
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TileClient::TileClient()
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: mWasPlaceholder(false)
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{
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}
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TileClient::~TileClient()
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{
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if (mExpirationState.IsTracked()) {
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MOZ_ASSERT(mBackBuffer);
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TileExpiry::RemoveTile(this);
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}
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}
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TileClient::TileClient(const TileClient& o)
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{
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mBackBuffer.Set(this, o.mBackBuffer);
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mBackBufferOnWhite = o.mBackBufferOnWhite;
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mFrontBuffer = o.mFrontBuffer;
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mFrontBufferOnWhite = o.mFrontBufferOnWhite;
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mWasPlaceholder = o.mWasPlaceholder;
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mUpdateRect = o.mUpdateRect;
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#ifdef GFX_TILEDLAYER_DEBUG_OVERLAY
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mLastUpdate = o.mLastUpdate;
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#endif
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mAllocator = o.mAllocator;
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mInvalidFront = o.mInvalidFront;
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mInvalidBack = o.mInvalidBack;
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}
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TileClient&
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TileClient::operator=(const TileClient& o)
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{
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if (this == &o) return *this;
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mBackBuffer.Set(this, o.mBackBuffer);
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mBackBufferOnWhite = o.mBackBufferOnWhite;
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mFrontBuffer = o.mFrontBuffer;
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mFrontBufferOnWhite = o.mFrontBufferOnWhite;
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mWasPlaceholder = o.mWasPlaceholder;
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mUpdateRect = o.mUpdateRect;
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#ifdef GFX_TILEDLAYER_DEBUG_OVERLAY
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mLastUpdate = o.mLastUpdate;
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#endif
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mAllocator = o.mAllocator;
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mInvalidFront = o.mInvalidFront;
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mInvalidBack = o.mInvalidBack;
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return *this;
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}
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void
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TileClient::Dump(std::stringstream& aStream)
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{
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aStream << "TileClient(bb=" << (TextureClient*)mBackBuffer << " fb=" << mFrontBuffer.get();
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if (mBackBufferOnWhite) {
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aStream << " bbow=" << mBackBufferOnWhite.get();
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}
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if (mFrontBufferOnWhite) {
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aStream << " fbow=" << mFrontBufferOnWhite.get();
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}
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aStream << ")";
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}
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void
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TileClient::Flip()
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{
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RefPtr<TextureClient> frontBuffer = mFrontBuffer;
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RefPtr<TextureClient> frontBufferOnWhite = mFrontBufferOnWhite;
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mFrontBuffer = mBackBuffer;
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mFrontBufferOnWhite = mBackBufferOnWhite;
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mBackBuffer.Set(this, frontBuffer);
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mBackBufferOnWhite = frontBufferOnWhite;
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nsIntRegion invalidFront = mInvalidFront;
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mInvalidFront = mInvalidBack;
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mInvalidBack = invalidFront;
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}
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static bool
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CopyFrontToBack(TextureClient* aFront,
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TextureClient* aBack,
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const gfx::IntRect& aRectToCopy,
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TilePaintFlags aFlags,
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std::vector<CapturedTiledPaintState::Copy>* aCopies,
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std::vector<RefPtr<TextureClient>>* aClients)
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{
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bool asyncPaint = !!(aFlags & TilePaintFlags::Async);
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OpenMode asyncFlags = asyncPaint ? OpenMode::OPEN_ASYNC : OpenMode::OPEN_NONE;
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TextureClientAutoLock frontLock(aFront, OpenMode::OPEN_READ | asyncFlags);
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if (!frontLock.Succeeded()) {
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return false;
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}
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if (!aBack->Lock(OpenMode::OPEN_READ_WRITE | asyncFlags)) {
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gfxCriticalError() << "[Tiling:Client] Failed to lock the tile's back buffer";
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return false;
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}
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RefPtr<gfx::DrawTarget> backBuffer = aBack->BorrowDrawTarget();
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if (!backBuffer) {
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gfxWarning() << "[Tiling:Client] Failed to aquire the back buffer's draw target";
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return false;
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}
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RefPtr<gfx::DrawTarget> frontBuffer = aFront->BorrowDrawTarget();
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if (!frontBuffer) {
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gfxWarning() << "[Tiling:Client] Failed to aquire the front buffer's draw target";
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return false;
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}
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auto copy = CapturedTiledPaintState::Copy{
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frontBuffer, backBuffer, aRectToCopy, aRectToCopy.TopLeft()
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};
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if (asyncPaint && aCopies) {
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aClients->push_back(aFront);
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aCopies->push_back(copy);
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} else {
|
|
copy.CopyBuffer();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
TileClient::ValidateBackBufferFromFront(const nsIntRegion& aDirtyRegion,
|
|
const nsIntRegion& aVisibleRegion,
|
|
nsIntRegion& aAddPaintedRegion,
|
|
TilePaintFlags aFlags,
|
|
std::vector<CapturedTiledPaintState::Copy>* aCopies,
|
|
std::vector<RefPtr<TextureClient>>* aClients)
|
|
{
|
|
if (mBackBuffer && mFrontBuffer) {
|
|
gfx::IntSize tileSize = mFrontBuffer->GetSize();
|
|
const IntRect tileRect = IntRect(0, 0, tileSize.width, tileSize.height);
|
|
|
|
if (aDirtyRegion.Contains(tileRect)) {
|
|
// The dirty region means that we no longer need the front buffer, so
|
|
// discard it.
|
|
DiscardFrontBuffer();
|
|
} else {
|
|
// Region that needs copying.
|
|
nsIntRegion regionToCopy = mInvalidBack;
|
|
|
|
regionToCopy.Sub(regionToCopy, aDirtyRegion);
|
|
regionToCopy.And(regionToCopy, aVisibleRegion);
|
|
|
|
aAddPaintedRegion = regionToCopy;
|
|
|
|
if (regionToCopy.IsEmpty()) {
|
|
// Just redraw it all.
|
|
return;
|
|
}
|
|
|
|
// Copy the bounding rect of regionToCopy. As tiles are quite small, it
|
|
// is unlikely that we'd save much by copying each individual rect of the
|
|
// region, but we can reevaluate this if it becomes an issue.
|
|
const IntRect rectToCopy = regionToCopy.GetBounds();
|
|
gfx::IntRect gfxRectToCopy(rectToCopy.X(), rectToCopy.Y(), rectToCopy.Width(), rectToCopy.Height());
|
|
if (CopyFrontToBack(mFrontBuffer, mBackBuffer, gfxRectToCopy, aFlags, aCopies, aClients)) {
|
|
if (mBackBufferOnWhite) {
|
|
MOZ_ASSERT(mFrontBufferOnWhite);
|
|
if (CopyFrontToBack(mFrontBufferOnWhite, mBackBufferOnWhite, gfxRectToCopy, aFlags, aCopies, aClients)) {
|
|
mInvalidBack.Sub(mInvalidBack, aVisibleRegion);
|
|
}
|
|
} else {
|
|
mInvalidBack.Sub(mInvalidBack, aVisibleRegion);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
TileClient::DiscardFrontBuffer()
|
|
{
|
|
if (mFrontBuffer) {
|
|
MOZ_ASSERT(mFrontBuffer->GetReadLock());
|
|
|
|
MOZ_ASSERT(mAllocator);
|
|
if (mAllocator) {
|
|
mAllocator->ReturnTextureClientDeferred(mFrontBuffer);
|
|
if (mFrontBufferOnWhite) {
|
|
mAllocator->ReturnTextureClientDeferred(mFrontBufferOnWhite);
|
|
}
|
|
}
|
|
|
|
if (mFrontBuffer->IsLocked()) {
|
|
mFrontBuffer->Unlock();
|
|
}
|
|
if (mFrontBufferOnWhite && mFrontBufferOnWhite->IsLocked()) {
|
|
mFrontBufferOnWhite->Unlock();
|
|
}
|
|
mFrontBuffer = nullptr;
|
|
mFrontBufferOnWhite = nullptr;
|
|
}
|
|
}
|
|
|
|
static void
|
|
DiscardTexture(TextureClient* aTexture, TextureClientAllocator* aAllocator)
|
|
{
|
|
MOZ_ASSERT(aAllocator);
|
|
if (aTexture && aAllocator) {
|
|
MOZ_ASSERT(aTexture->GetReadLock());
|
|
if (!aTexture->HasSynchronization() && aTexture->IsReadLocked()) {
|
|
// Our current back-buffer is still locked by the compositor. This can occur
|
|
// when the client is producing faster than the compositor can consume. In
|
|
// this case we just want to drop it and not return it to the pool.
|
|
aAllocator->ReportClientLost();
|
|
} else {
|
|
aAllocator->ReturnTextureClientDeferred(aTexture);
|
|
}
|
|
if (aTexture->IsLocked()) {
|
|
aTexture->Unlock();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
TileClient::DiscardBackBuffer()
|
|
{
|
|
if (mBackBuffer) {
|
|
DiscardTexture(mBackBuffer, mAllocator);
|
|
mBackBuffer.Set(this, nullptr);
|
|
DiscardTexture(mBackBufferOnWhite, mAllocator);
|
|
mBackBufferOnWhite = nullptr;
|
|
}
|
|
}
|
|
|
|
static already_AddRefed<TextureClient>
|
|
CreateBackBufferTexture(TextureClient* aCurrentTexture,
|
|
CompositableClient& aCompositable,
|
|
TextureClientAllocator* aAllocator)
|
|
{
|
|
if (aCurrentTexture) {
|
|
// Our current back-buffer is still locked by the compositor. This can occur
|
|
// when the client is producing faster than the compositor can consume. In
|
|
// this case we just want to drop it and not return it to the pool.
|
|
aAllocator->ReportClientLost();
|
|
}
|
|
|
|
RefPtr<TextureClient> texture = aAllocator->GetTextureClient();
|
|
|
|
if (!texture) {
|
|
gfxCriticalError() << "[Tiling:Client] Failed to allocate a TextureClient";
|
|
return nullptr;
|
|
}
|
|
|
|
if (!aCompositable.AddTextureClient(texture)) {
|
|
gfxCriticalError() << "[Tiling:Client] Failed to connect a TextureClient";
|
|
return nullptr;
|
|
}
|
|
|
|
return texture.forget();
|
|
}
|
|
|
|
TextureClient*
|
|
TileClient::GetBackBuffer(CompositableClient& aCompositable,
|
|
const nsIntRegion& aDirtyRegion,
|
|
const nsIntRegion& aVisibleRegion,
|
|
gfxContentType aContent,
|
|
SurfaceMode aMode,
|
|
nsIntRegion& aAddPaintedRegion,
|
|
TilePaintFlags aFlags,
|
|
RefPtr<TextureClient>* aBackBufferOnWhite,
|
|
std::vector<CapturedTiledPaintState::Copy>* aCopies,
|
|
std::vector<RefPtr<TextureClient>>* aClients)
|
|
{
|
|
if (!mAllocator) {
|
|
gfxCriticalError() << "[TileClient] Missing TextureClientAllocator.";
|
|
return nullptr;
|
|
}
|
|
if (aMode != SurfaceMode::SURFACE_COMPONENT_ALPHA) {
|
|
// It can happen that a component-alpha layer stops being on component alpha
|
|
// on the next frame, just drop the buffers on white if that happens.
|
|
if (mBackBufferOnWhite) {
|
|
mAllocator->ReportClientLost();
|
|
mBackBufferOnWhite = nullptr;
|
|
}
|
|
if (mFrontBufferOnWhite) {
|
|
mAllocator->ReportClientLost();
|
|
mFrontBufferOnWhite = nullptr;
|
|
}
|
|
}
|
|
|
|
// Try to re-use the front-buffer if possible
|
|
if (mFrontBuffer &&
|
|
mFrontBuffer->HasIntermediateBuffer() &&
|
|
!mFrontBuffer->IsReadLocked() &&
|
|
(aMode != SurfaceMode::SURFACE_COMPONENT_ALPHA || (
|
|
mFrontBufferOnWhite && !mFrontBufferOnWhite->IsReadLocked()))) {
|
|
// If we had a backbuffer we no longer need it since we can re-use the
|
|
// front buffer here. It can be worth it to hold on to the back buffer
|
|
// so we don't need to pay the cost of initializing a new back buffer
|
|
// later (copying pixels and texture upload). But this could increase
|
|
// our memory usage and lead to OOM more frequently from spikes in usage,
|
|
// so we have this behavior behind a pref.
|
|
if (!gfxPrefs::LayersTileRetainBackBuffer()) {
|
|
DiscardBackBuffer();
|
|
}
|
|
Flip();
|
|
} else {
|
|
if (!mBackBuffer || mBackBuffer->IsReadLocked()) {
|
|
mBackBuffer.Set(this,
|
|
CreateBackBufferTexture(mBackBuffer, aCompositable, mAllocator)
|
|
);
|
|
if (!mBackBuffer) {
|
|
DiscardBackBuffer();
|
|
DiscardFrontBuffer();
|
|
return nullptr;
|
|
}
|
|
mInvalidBack = IntRect(IntPoint(), mBackBuffer->GetSize());
|
|
}
|
|
|
|
if (aMode == SurfaceMode::SURFACE_COMPONENT_ALPHA
|
|
&& (!mBackBufferOnWhite || mBackBufferOnWhite->IsReadLocked())) {
|
|
mBackBufferOnWhite = CreateBackBufferTexture(
|
|
mBackBufferOnWhite, aCompositable, mAllocator
|
|
);
|
|
if (!mBackBufferOnWhite) {
|
|
DiscardBackBuffer();
|
|
DiscardFrontBuffer();
|
|
return nullptr;
|
|
}
|
|
mInvalidBack = IntRect(IntPoint(), mBackBufferOnWhite->GetSize());
|
|
}
|
|
|
|
ValidateBackBufferFromFront(aDirtyRegion, aVisibleRegion, aAddPaintedRegion, aFlags, aCopies, aClients);
|
|
}
|
|
|
|
OpenMode lockMode = aFlags & TilePaintFlags::Async ? OpenMode::OPEN_READ_WRITE_ASYNC
|
|
: OpenMode::OPEN_READ_WRITE;
|
|
|
|
if (!mBackBuffer->IsLocked()) {
|
|
if (!mBackBuffer->Lock(lockMode)) {
|
|
gfxCriticalError() << "[Tiling:Client] Failed to lock a tile (B)";
|
|
DiscardBackBuffer();
|
|
DiscardFrontBuffer();
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (mBackBufferOnWhite && !mBackBufferOnWhite->IsLocked()) {
|
|
if (!mBackBufferOnWhite->Lock(lockMode)) {
|
|
gfxCriticalError() << "[Tiling:Client] Failed to lock a tile (W)";
|
|
DiscardBackBuffer();
|
|
DiscardFrontBuffer();
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
*aBackBufferOnWhite = mBackBufferOnWhite;
|
|
return mBackBuffer;
|
|
}
|
|
|
|
TileDescriptor
|
|
TileClient::GetTileDescriptor()
|
|
{
|
|
if (IsPlaceholderTile()) {
|
|
mWasPlaceholder = true;
|
|
return PlaceholderTileDescriptor();
|
|
}
|
|
bool wasPlaceholder = mWasPlaceholder;
|
|
mWasPlaceholder = false;
|
|
|
|
bool readLocked = mFrontBuffer->OnForwardedToHost();
|
|
bool readLockedOnWhite = false;
|
|
|
|
if (mFrontBufferOnWhite) {
|
|
readLockedOnWhite = mFrontBufferOnWhite->OnForwardedToHost();
|
|
}
|
|
|
|
return TexturedTileDescriptor(nullptr, mFrontBuffer->GetIPDLActor(),
|
|
mFrontBufferOnWhite ? MaybeTexture(mFrontBufferOnWhite->GetIPDLActor()) : MaybeTexture(null_t()),
|
|
mUpdateRect,
|
|
readLocked, readLockedOnWhite,
|
|
wasPlaceholder);
|
|
}
|
|
|
|
void
|
|
ClientTiledLayerBuffer::UnlockTile(TileClient& aTile)
|
|
{
|
|
// We locked the back buffer, and flipped so we now need to unlock the front
|
|
if (aTile.mFrontBuffer && aTile.mFrontBuffer->IsLocked()) {
|
|
aTile.mFrontBuffer->Unlock();
|
|
aTile.mFrontBuffer->SyncWithObject(mCompositableClient.GetForwarder()->GetSyncObject());
|
|
}
|
|
if (aTile.mFrontBufferOnWhite && aTile.mFrontBufferOnWhite->IsLocked()) {
|
|
aTile.mFrontBufferOnWhite->Unlock();
|
|
aTile.mFrontBufferOnWhite->SyncWithObject(mCompositableClient.GetForwarder()->GetSyncObject());
|
|
}
|
|
if (aTile.mBackBuffer && aTile.mBackBuffer->IsLocked()) {
|
|
aTile.mBackBuffer->Unlock();
|
|
}
|
|
if (aTile.mBackBufferOnWhite && aTile.mBackBufferOnWhite->IsLocked()) {
|
|
aTile.mBackBufferOnWhite->Unlock();
|
|
}
|
|
}
|
|
|
|
void
|
|
TiledContentClient::PrintInfo(std::stringstream& aStream, const char* aPrefix)
|
|
{
|
|
aStream << aPrefix;
|
|
aStream << nsPrintfCString("%sTiledContentClient (0x%p)", mName, this).get();
|
|
}
|
|
|
|
void
|
|
TiledContentClient::Dump(std::stringstream& aStream,
|
|
const char* aPrefix,
|
|
bool aDumpHtml,
|
|
TextureDumpMode aCompress)
|
|
{
|
|
GetTiledBuffer()->Dump(aStream, aPrefix, aDumpHtml, aCompress);
|
|
}
|
|
|
|
void
|
|
BasicTiledLayerPaintData::ResetPaintData()
|
|
{
|
|
mLowPrecisionPaintCount = 0;
|
|
mPaintFinished = false;
|
|
mHasTransformAnimation = false;
|
|
mCompositionBounds.SetEmpty();
|
|
mCriticalDisplayPort = Nothing();
|
|
}
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|