DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (1aeaa33a64f9)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "CanvasLayerComposite.h"
#include "composite/CompositableHost.h"  // for CompositableHost
#include "gfx2DGlue.h"                   // for ToFilter
#include "gfxEnv.h"                      // for gfxEnv, etc
#include "mozilla/gfx/Matrix.h"          // for Matrix4x4
#include "mozilla/gfx/Point.h"           // for Point
#include "mozilla/gfx/Rect.h"            // for Rect
#include "mozilla/layers/Compositor.h"   // for Compositor
#include "mozilla/layers/Effects.h"      // for EffectChain
#include "mozilla/mozalloc.h"            // for operator delete
#include "nsAString.h"
#include "mozilla/RefPtr.h"   // for nsRefPtr
#include "nsISupportsImpl.h"  // for MOZ_COUNT_CTOR, etc
#include "nsString.h"         // for nsAutoCString

namespace mozilla {
namespace layers {

using namespace mozilla::gfx;

CanvasLayerComposite::CanvasLayerComposite(LayerManagerComposite* aManager)
    : CanvasLayer(aManager, nullptr),
      LayerComposite(aManager),
      mCompositableHost(nullptr) {
  MOZ_COUNT_CTOR(CanvasLayerComposite);
  mImplData = static_cast<LayerComposite*>(this);
}

CanvasLayerComposite::~CanvasLayerComposite() {
  MOZ_COUNT_DTOR(CanvasLayerComposite);

  CleanupResources();
}

bool CanvasLayerComposite::SetCompositableHost(CompositableHost* aHost) {
  switch (aHost->GetType()) {
    case CompositableType::IMAGE: {
      if (mCompositableHost && aHost != mCompositableHost) {
        mCompositableHost->Detach(this);
      }
      mCompositableHost = aHost;
      return true;
    }
    default:
      return false;
  }
}

Layer* CanvasLayerComposite::GetLayer() { return this; }

void CanvasLayerComposite::SetLayerManager(HostLayerManager* aManager) {
  LayerComposite::SetLayerManager(aManager);
  mManager = aManager;
  if (mCompositableHost && mCompositor) {
    mCompositableHost->SetTextureSourceProvider(mCompositor);
  }
}

void CanvasLayerComposite::RenderLayer(const IntRect& aClipRect,
                                       const Maybe<gfx::Polygon>& aGeometry) {
  if (!mCompositableHost || !mCompositableHost->IsAttached()) {
    return;
  }

  mCompositor->MakeCurrent();

#ifdef MOZ_DUMP_PAINTING
  if (gfxEnv::DumpCompositorTextures()) {
    RefPtr<gfx::DataSourceSurface> surf = mCompositableHost->GetAsSurface();
    if (surf) {
      WriteSnapshotToDumpFile(this, surf);
    }
  }
#endif

  RenderWithAllMasks(this, mCompositor, aClipRect,
                     [&](EffectChain& effectChain, const IntRect& clipRect) {
                       mCompositableHost->Composite(
                           mCompositor, this, effectChain,
                           GetEffectiveOpacity(), GetEffectiveTransform(),
                           GetSamplingFilter(), clipRect);
                     });

  mCompositableHost->BumpFlashCounter();
}

CompositableHost* CanvasLayerComposite::GetCompositableHost() {
  if (mCompositableHost && mCompositableHost->IsAttached()) {
    return mCompositableHost.get();
  }

  return nullptr;
}

void CanvasLayerComposite::CleanupResources() {
  if (mCompositableHost) {
    mCompositableHost->Detach(this);
  }
  mCompositableHost = nullptr;
}

gfx::SamplingFilter CanvasLayerComposite::GetSamplingFilter() {
  gfx::SamplingFilter filter = mSamplingFilter;
#ifdef ANDROID
  // Bug 691354
  // Using the LINEAR filter we get unexplained artifacts.
  // Use NEAREST when no scaling is required.
  Matrix matrix;
  bool is2D = GetEffectiveTransform().Is2D(&matrix);
  if (is2D && !ThebesMatrix(matrix).HasNonTranslationOrFlip()) {
    filter = SamplingFilter::POINT;
  }
#endif
  return filter;
}

void CanvasLayerComposite::GenEffectChain(EffectChain& aEffect) {
  aEffect.mLayerRef = this;
  aEffect.mPrimaryEffect = mCompositableHost->GenEffect(GetSamplingFilter());
}

void CanvasLayerComposite::PrintInfo(std::stringstream& aStream,
                                     const char* aPrefix) {
  CanvasLayer::PrintInfo(aStream, aPrefix);
  aStream << "\n";
  if (mCompositableHost && mCompositableHost->IsAttached()) {
    nsAutoCString pfx(aPrefix);
    pfx += "  ";
    mCompositableHost->PrintInfo(aStream, pfx.get());
  }
}

}  // namespace layers
}  // namespace mozilla