void
ClientThebesLayer::RenderLayer()
{
  if (GetMaskLayer()) {
    ToClientLayer(GetMaskLayer())->RenderLayer();
  }
  
  if (!mContentClient) {
    mContentClient = ContentClient::CreateContentClient(ClientManager()->AsShadowForwarder());
    if (!mContentClient) {
      return;
    }
    mContentClient->Connect();
    ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
    MOZ_ASSERT(mContentClient->GetForwarder());
  }

  mContentClient->BeginPaint();
  PaintThebes();
  mContentClient->EndPaint();
  // It is very important that this is called after EndPaint, because destroying
  // textures is a three stage process:
  // 1. We are done with the buffer and move it to ContentClient::mOldTextures,
  // that happens in DestroyBuffers which is may be called indirectly from
  // PaintThebes.
  // 2. The content client calls RemoveTextureClient on the texture clients in
  // mOldTextures and forgets them. They then become invalid. The compositable
  // client keeps a record of IDs. This happens in EndPaint.
  // 3. An IPC message is sent to destroy the corresponding texture host. That
  // happens from OnTransaction.
  // It is important that these steps happen in order.
  mContentClient->OnTransaction();
}
Example #2
0
void
ClientCanvasLayer::RenderLayer()
{
  PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
    js::ProfileEntry::Category::GRAPHICS);

  if (GetMaskLayer()) {
    ToClientLayer(GetMaskLayer())->RenderLayer();
  }

  if (!IsDirty()) {
    return;
  }

  if (!mCanvasClient) {
    TextureFlags flags = TextureFlags::IMMEDIATE_UPLOAD;
    if (mNeedsYFlip) {
      flags |= TextureFlags::NEEDS_Y_FLIP;
    }

    if (!mGLContext) {
      // We don't support locking for buffer surfaces currently
      flags |= TextureFlags::IMMEDIATE_UPLOAD;
    } else {
      // GLContext's SurfaceStream handles ownership itself,
      // and doesn't require layers to do any deallocation.
      flags |= TextureFlags::DEALLOCATE_CLIENT;
    }

    if (!mIsAlphaPremultiplied) {
      flags |= TextureFlags::NON_PREMULTIPLIED;
    }

    mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
                                                     ClientManager()->AsShadowForwarder(),
                                                     flags);
    if (!mCanvasClient) {
      return;
    }
    if (HasShadow()) {
      mCanvasClient->Connect();
      ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
    }
  }

  FirePreTransactionCallback();
  mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);

  FireDidTransactionCallback();

  ClientManager()->Hold(this);
  mCanvasClient->Updated();
  mCanvasClient->OnTransaction();
}
Example #3
0
void
CanvasLayerD3D9::RenderLayer()
{
  FirePreTransactionCallback();
  UpdateSurface();
  if (mD3DManager->CompositingDisabled()) {
    return;
  }
  FireDidTransactionCallback();

  if (!mTexture)
    return;

  /*
   * We flip the Y axis here, note we can only do this because we are in
   * CULL_NONE mode!
   */
  ShaderConstantRect quad(0, 0, mBounds.width, mBounds.height);

  const bool needsYFlip = (mOriginPos == gl::OriginPos::BottomLeft);
  if (needsYFlip) {
    quad.mHeight = (float)-mBounds.height;
    quad.mY = (float)mBounds.height;
  }

  device()->SetVertexShaderConstantF(CBvLayerQuad, quad, 1);

  SetShaderTransformAndOpacity();

  if (mHasAlpha) {
    mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBALAYER, GetMaskLayer());
  } else {
    mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBLAYER, GetMaskLayer());
  }

  if (mFilter == GraphicsFilter::FILTER_NEAREST) {
    device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_POINT);
    device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_POINT);
  }
  if (!mDataIsPremultiplied) {
    device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
    device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, TRUE);
  }
  device()->SetTexture(0, mTexture);
  device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
  if (!mDataIsPremultiplied) {
    device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
    device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, FALSE);
  }
  if (mFilter == GraphicsFilter::FILTER_NEAREST) {
    device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
    device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
  }
}
void
SimpleClientTiledThebesLayer::RenderLayer()
{
  LayerManager::DrawThebesLayerCallback callback =
    ClientManager()->GetThebesLayerCallback();
  void *data = ClientManager()->GetThebesLayerCallbackData();
  if (!callback) {
    ClientManager()->SetTransactionIncomplete();
    return;
  }

  // First time? Create a content client.
  if (!mContentClient) {
    mContentClient = new SimpleTiledContentClient(this, ClientManager());

    mContentClient->Connect();
    ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
    MOZ_ASSERT(mContentClient->GetForwarder());
  }

  // If the format changed, nothing is valid
  if (mContentClient->mTiledBuffer.HasFormatChanged()) {
    mValidRegion = nsIntRegion();
  }

  nsIntRegion invalidRegion = mVisibleRegion;
  invalidRegion.Sub(invalidRegion, mValidRegion);
  if (invalidRegion.IsEmpty()) {
    return;
  }

  // Only paint the mask layer on the first transaction.
  if (GetMaskLayer() && !ClientManager()->IsRepeatTransaction()) {
    ToClientLayer(GetMaskLayer())->RenderLayer();
  }

  // SimpleTiledContentClient doesn't support progressive updates or the low
  // precision buffer yet.
  MOZ_ASSERT(!gfxPrefs::UseProgressiveTilePainting() &&
             !gfxPrefs::UseLowPrecisionBuffer());

  mValidRegion = mVisibleRegion;

  NS_ASSERTION(!ClientManager()->IsRepeatTransaction(), "Didn't paint our mask layer");

  mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
                                           callback, data);

  ClientManager()->Hold(this);

  mContentClient->UseTiledLayerBuffer();
}
void
ClientCanvasLayer::RenderLayer()
{
  PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
    js::ProfileEntry::Category::GRAPHICS);

  if (GetMaskLayer()) {
    ToClientLayer(GetMaskLayer())->RenderLayer();
  }

  if (!IsDirty()) {
    return;
  }
  Painted();

  if (!mCanvasClient) {
    TextureFlags flags = TextureFlags::IMMEDIATE_UPLOAD;
    if (mOriginPos == gl::OriginPos::BottomLeft) {
      flags |= TextureFlags::ORIGIN_BOTTOM_LEFT;
    }

    if (!mGLContext) {
      // We don't support locking for buffer surfaces currently
      flags |= TextureFlags::IMMEDIATE_UPLOAD;
    }

    if (!mIsAlphaPremultiplied) {
      flags |= TextureFlags::NON_PREMULTIPLIED;
    }

    mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
                                                     ClientManager()->AsShadowForwarder(),
                                                     flags);
    if (!mCanvasClient) {
      return;
    }
    if (HasShadow()) {
      mCanvasClient->Connect();
      ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
    }
  }

  FirePreTransactionCallback();
  mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);

  FireDidTransactionCallback();

  ClientManager()->Hold(this);
  mCanvasClient->Updated();
  mCanvasClient->OnTransaction();
}
void
ColorLayerComposite::RenderLayer(const nsIntPoint& aOffset,
                                 const nsIntRect& aClipRect)
{
  EffectChain effects;
  gfxRGBA color(GetColor());
  effects.mPrimaryEffect = new EffectSolidColor(gfx::Color(color.r,
                                                           color.g,
                                                           color.b,
                                                           color.a));
  nsIntRect visibleRect = GetEffectiveVisibleRegion().GetBounds();

  LayerManagerComposite::AddMaskEffect(GetMaskLayer(), effects);

  gfx::Rect rect(visibleRect.x, visibleRect.y,
                 visibleRect.width, visibleRect.height);
  gfx::Rect clipRect(aClipRect.x, aClipRect.y,
                     aClipRect.width, aClipRect.height);

  float opacity = GetEffectiveOpacity();

  gfx::Matrix4x4 transform;
  ToMatrix4x4(GetEffectiveTransform(), transform);

  mCompositor->DrawQuad(rect, clipRect, effects, opacity,
                        transform, gfx::Point(aOffset.x, aOffset.y));
  mCompositor->DrawDiagnostics(gfx::Color(0.0, 1.0, 1.0, 1.0),
                               rect, clipRect,
                               transform, gfx::Point(aOffset.x, aOffset.y));

}
void
BasicContainerLayer::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 = SnapTransformTranslation(idealTransform, &residual);
  // We always pass the ideal matrix down to our children, so there is no
  // need to apply any compensation using the residual from SnapTransformTranslation.
  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());
}
void
ColorLayerComposite::RenderLayer(const nsIntRect& aClipRect)
{
  EffectChain effects(this);
  gfxRGBA color(GetColor());
  effects.mPrimaryEffect = new EffectSolidColor(gfx::Color(color.r,
                                                           color.g,
                                                           color.b,
                                                           color.a));
  nsIntRect boundRect = GetBounds();

  LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(GetMaskLayer(),
                                                          effects);

  gfx::Rect rect(boundRect.x, boundRect.y,
                 boundRect.width, boundRect.height);
  gfx::Rect clipRect(aClipRect.x, aClipRect.y,
                     aClipRect.width, aClipRect.height);

  float opacity = GetEffectiveOpacity();

  const gfx::Matrix4x4& transform = GetEffectiveTransform();
  mCompositor->DrawQuad(rect, clipRect, effects, opacity, transform);
  mCompositor->DrawDiagnostics(DIAGNOSTIC_COLOR,
                               rect, clipRect,
                               transform);
}
Example #9
0
void
ContainerLayer::DefaultComputeEffectiveTransforms(const Matrix4x4& aTransformToSurface)
{
  Matrix residual;
  Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface;
  idealTransform.ProjectTo2D();
  mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual);

  bool useIntermediateSurface;
  if (GetMaskLayer() ||
      GetForceIsolatedGroup()) {
    useIntermediateSurface = true;
#ifdef MOZ_DUMP_PAINTING
  } else if (gfxUtils::sDumpPainting) {
    useIntermediateSurface = true;
#endif
  } else {
    float opacity = GetEffectiveOpacity();
    CompositionOp blendMode = GetEffectiveMixBlendMode();
    if ((opacity != 1.0f || blendMode != CompositionOp::OP_OVER) && HasMultipleChildren()) {
      useIntermediateSurface = true;
    } else {
      useIntermediateSurface = false;
      gfx::Matrix contTransform;
      if (!mEffectiveTransform.Is2D(&contTransform) ||
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
        !contTransform.PreservesAxisAlignedRectangles()) {
#else
        gfx::ThebesMatrix(contTransform).HasNonIntegerTranslation()) {
#endif
        for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
          const nsIntRect *clipRect = child->GetEffectiveClipRect();
          /* We can't (easily) forward our transform to children with a non-empty clip
           * rect since it would need to be adjusted for the transform. See
           * the calculations performed by CalculateScissorRect above.
           * Nor for a child with a mask layer.
           */
          if ((clipRect && !clipRect->IsEmpty() && !child->GetVisibleRegion().IsEmpty()) ||
              child->GetMaskLayer()) {
            useIntermediateSurface = true;
            break;
          }
        }
      }
    }
  }

  mUseIntermediateSurface = useIntermediateSurface;
  if (useIntermediateSurface) {
    ComputeEffectiveTransformsForChildren(Matrix4x4::From2D(residual));
  } else {
    ComputeEffectiveTransformsForChildren(idealTransform);
  }

  if (idealTransform.CanDraw2D()) {
    ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
  } else {
    ComputeEffectiveTransformForMaskLayer(Matrix4x4());
  }
}
void
ClientCanvasLayer::RenderLayer()
{
    PROFILER_LABEL("ClientCanvasLayer", "Paint");
    if (!IsDirty()) {
        return;
    }

    if (GetMaskLayer()) {
        ToClientLayer(GetMaskLayer())->RenderLayer();
    }

    if (!mCanvasClient) {
        TextureFlags flags = TEXTURE_IMMEDIATE_UPLOAD;
        if (mNeedsYFlip) {
            flags |= TEXTURE_NEEDS_Y_FLIP;
        }

        bool isCrossProcess = !(XRE_GetProcessType() == GeckoProcessType_Default);
        //Append TEXTURE_DEALLOCATE_CLIENT flag for streaming buffer under OOPC case
        if (isCrossProcess && mGLContext) {
            GLScreenBuffer* screen = mGLContext->Screen();
            if (screen && screen->Stream()) {
                flags |= TEXTURE_DEALLOCATE_CLIENT;
            }
        }
        mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
                        ClientManager(), flags);
        if (!mCanvasClient) {
            return;
        }
        if (HasShadow()) {
            mCanvasClient->Connect();
            ClientManager()->Attach(mCanvasClient, this);
        }
    }

    FirePreTransactionCallback();
    mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);

    FireDidTransactionCallback();

    ClientManager()->Hold(this);
    mCanvasClient->Updated();
    mCanvasClient->OnTransaction();
}
Example #11
0
void
ClientThebesLayer::RenderLayer()
{
  if (GetMaskLayer()) {
    ToClientLayer(GetMaskLayer())->RenderLayer();
  }
  
  if (!mContentClient) {
    mContentClient = ContentClient::CreateContentClient(ClientManager());
    if (!mContentClient) {
      return;
    }
    mContentClient->Connect();
    ClientManager()->Attach(mContentClient, this);
    MOZ_ASSERT(mContentClient->GetForwarder());
  }

  mContentClient->BeginPaint();
  PaintThebes();
  mContentClient->EndPaint();
}
Example #12
0
void
Layer::Dump(FILE* aFile, const char* aPrefix, bool aDumpHtml)
{
  if (aDumpHtml) {
    fprintf_stderr(aFile, "<li><a id=\"%p\" ", this);
#ifdef MOZ_DUMP_PAINTING
    if (GetType() == TYPE_CONTAINER || GetType() == TYPE_THEBES) {
      WriteSnapshotLinkToDumpFile(this, aFile);
    }
#endif
    fprintf_stderr(aFile, ">");
  }
  DumpSelf(aFile, aPrefix);

#ifdef MOZ_DUMP_PAINTING
  if (gfxUtils::sDumpPainting && AsLayerComposite() && AsLayerComposite()->GetCompositableHost()) {
    AsLayerComposite()->GetCompositableHost()->Dump(aFile, aPrefix, aDumpHtml);
  }
#endif

  if (aDumpHtml) {
    fprintf_stderr(aFile, "</a>");
  }

  if (Layer* mask = GetMaskLayer()) {
    fprintf_stderr(aFile, "%s  Mask layer:\n", aPrefix);
    nsAutoCString pfx(aPrefix);
    pfx += "    ";
    mask->Dump(aFile, pfx.get(), aDumpHtml);
  }

  if (Layer* kid = GetFirstChild()) {
    nsAutoCString pfx(aPrefix);
    pfx += "  ";
    if (aDumpHtml) {
      fprintf_stderr(aFile, "<ul>");
    }
    kid->Dump(aFile, pfx.get(), aDumpHtml);
    if (aDumpHtml) {
      fprintf_stderr(aFile, "</ul>");
    }
  }

  if (aDumpHtml) {
    fprintf_stderr(aFile, "</li>");
  }
  if (Layer* next = GetNextSibling())
    next->Dump(aFile, aPrefix, aDumpHtml);
}
void
BasicContainerLayer::ComputeEffectiveTransforms(const Matrix4x4& 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.
  Matrix residual;
  Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface;
  idealTransform.ProjectTo2D();

  if (!idealTransform.CanDraw2D()) {
    mEffectiveTransform = idealTransform;
    ComputeEffectiveTransformsForChildren(Matrix4x4());
    ComputeEffectiveTransformForMaskLayer(Matrix4x4());
    mUseIntermediateSurface = true;
    return;
  }

  mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual);
  // We always pass the ideal matrix down to our children, so there is no
  // need to apply any compensation using the residual from SnapTransformTranslation.
  ComputeEffectiveTransformsForChildren(idealTransform);

  ComputeEffectiveTransformForMaskLayer(aTransformToSurface);

  Layer* child = GetFirstChild();
  bool hasSingleBlendingChild = false;
  if (!HasMultipleChildren() && child) {
    hasSingleBlendingChild = child->GetMixBlendMode() != CompositionOp::OP_OVER;
  }

  /* If we have a single childand it is not blending,, 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
   * Having a blend mode also always forces our own push group
   */
  mUseIntermediateSurface =
    GetMaskLayer() ||
    GetForceIsolatedGroup() ||
    (GetMixBlendMode() != CompositionOp::OP_OVER && HasMultipleChildren()) ||
    (GetEffectiveOpacity() != 1.0 && (HasMultipleChildren() || hasSingleBlendingChild));
}
void
ContainerLayerD3D9::RenderLayer()
{
  nsRefPtr<IDirect3DSurface9> previousRenderTarget;
  nsRefPtr<IDirect3DTexture9> renderTexture;
  float previousRenderTargetOffset[4];
  float renderTargetOffset[] = { 0, 0, 0, 0 };
  float oldViewMatrix[4][4];

  RECT containerD3D9ClipRect; 
  device()->GetScissorRect(&containerD3D9ClipRect);
  // Convert scissor to an nsIntRect. RECT's are exclusive on the bottom and
  // right values.
  nsIntRect oldScissor(containerD3D9ClipRect.left, 
                       containerD3D9ClipRect.top,
                       containerD3D9ClipRect.right - containerD3D9ClipRect.left,
                       containerD3D9ClipRect.bottom - containerD3D9ClipRect.top);

  ReadbackProcessor readback;
  readback.BuildUpdates(this);

  nsIntRect visibleRect = GetEffectiveVisibleRegion().GetBounds();
  bool useIntermediate = UseIntermediateSurface();

  mSupportsComponentAlphaChildren = false;
  if (useIntermediate) {
    nsRefPtr<IDirect3DSurface9> renderSurface;
    if (!mD3DManager->CompositingDisabled()) {
      device()->GetRenderTarget(0, getter_AddRefs(previousRenderTarget));
      HRESULT hr = device()->CreateTexture(visibleRect.width, visibleRect.height, 1,
                                           D3DUSAGE_RENDERTARGET, D3DFMT_A8R8G8B8,
                                           D3DPOOL_DEFAULT, getter_AddRefs(renderTexture),
                                           nullptr);
      if (FAILED(hr)) {
        ReportFailure(NS_LITERAL_CSTRING("ContainerLayerD3D9::ContainerRender(): Failed to create texture"),
                                hr);
        return;
      }

      nsRefPtr<IDirect3DSurface9> renderSurface;
      renderTexture->GetSurfaceLevel(0, getter_AddRefs(renderSurface));
      device()->SetRenderTarget(0, renderSurface);
    }

    if (mVisibleRegion.GetNumRects() == 1 && 
        (GetContentFlags() & CONTENT_OPAQUE)) {
      // don't need a background, we're going to paint all opaque stuff
      mSupportsComponentAlphaChildren = true;
    } else {
      Matrix4x4 transform3D = GetEffectiveTransform();
      Matrix transform;
      // If we have an opaque ancestor layer, then we can be sure that
      // all the pixels we draw into are either opaque already or will be
      // covered by something opaque. Otherwise copying up the background is
      // not safe.
      HRESULT hr = E_FAIL;
      if (HasOpaqueAncestorLayer(this) &&
          transform3D.Is2D(&transform) && !ThebesMatrix(transform).HasNonIntegerTranslation()) {
        // Copy background up from below
        RECT dest = { 0, 0, visibleRect.width, visibleRect.height };
        RECT src = dest;
        ::OffsetRect(&src,
                     visibleRect.x + int32_t(transform._31),
                     visibleRect.y + int32_t(transform._32));
        if (!mD3DManager->CompositingDisabled()) {
          hr = device()->
            StretchRect(previousRenderTarget, &src, renderSurface, &dest, D3DTEXF_NONE);
        }
      }
      if (hr == S_OK) {
        mSupportsComponentAlphaChildren = true;
      } else if (!mD3DManager->CompositingDisabled()) {
        device()->
          Clear(0, 0, D3DCLEAR_TARGET, D3DCOLOR_RGBA(0, 0, 0, 0), 0, 0);
      }
    }

    device()->
      GetVertexShaderConstantF(CBvRenderTargetOffset, previousRenderTargetOffset, 1);
    renderTargetOffset[0] = (float)visibleRect.x;
    renderTargetOffset[1] = (float)visibleRect.y;
    device()->
      SetVertexShaderConstantF(CBvRenderTargetOffset, renderTargetOffset, 1);

    gfx3DMatrix viewMatrix;
    /*
     * Matrix to transform to viewport space ( <-1.0, 1.0> topleft,
     * <1.0, -1.0> bottomright)
     */
    viewMatrix._11 = 2.0f / visibleRect.width;
    viewMatrix._22 = -2.0f / visibleRect.height;
    viewMatrix._41 = -1.0f;
    viewMatrix._42 = 1.0f;

    device()->
      GetVertexShaderConstantF(CBmProjection, &oldViewMatrix[0][0], 4);
    device()->
      SetVertexShaderConstantF(CBmProjection, &viewMatrix._11, 4);
  } else {
    mSupportsComponentAlphaChildren = 
        (GetContentFlags() & CONTENT_OPAQUE) ||
        (mParent && 
         mParent->SupportsComponentAlphaChildren());
  }

  nsAutoTArray<Layer*, 12> children;
  SortChildrenBy3DZOrder(children);

  /*
   * Render this container's contents.
   */
  for (uint32_t i = 0; i < children.Length(); i++) {
    LayerD3D9* layerToRender = static_cast<LayerD3D9*>(children.ElementAt(i)->ImplData());

    if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty()) {
      continue;
    }

    nsIntRect scissorRect =
      RenderTargetPixel::ToUntyped(layerToRender->GetLayer()->CalculateScissorRect(RenderTargetPixel::FromUntyped(oldScissor), nullptr));
    if (scissorRect.IsEmpty()) {
      continue;
    }

    RECT d3drect;
    d3drect.left = scissorRect.x;
    d3drect.top = scissorRect.y;
    d3drect.right = scissorRect.x + scissorRect.width;
    d3drect.bottom = scissorRect.y + scissorRect.height;
    device()->SetScissorRect(&d3drect);

    if (layerToRender->GetLayer()->GetType() == TYPE_THEBES) {
      static_cast<ThebesLayerD3D9*>(layerToRender)->RenderThebesLayer(&readback);
    } else {
      layerToRender->RenderLayer();
    }
  }
    
  if (useIntermediate && !mD3DManager->CompositingDisabled()) {
    device()->SetRenderTarget(0, previousRenderTarget);
    device()->SetVertexShaderConstantF(CBvRenderTargetOffset, previousRenderTargetOffset, 1);
    device()->SetVertexShaderConstantF(CBmProjection, &oldViewMatrix[0][0], 4);

    device()->SetVertexShaderConstantF(CBvLayerQuad,
                                       ShaderConstantRect(visibleRect.x,
                                                          visibleRect.y,
                                                          visibleRect.width,
                                                          visibleRect.height),
                                       1);

    SetShaderTransformAndOpacity();
    mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBALAYER,
                               GetMaskLayer(),
                               GetTransform().CanDraw2D());

    device()->SetTexture(0, renderTexture);
    device()->SetScissorRect(&containerD3D9ClipRect);
    device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
  } else {
    device()->SetScissorRect(&containerD3D9ClipRect);
  }
}
void
SimpleClientTiledThebesLayer::RenderLayer()
{
  LayerManager::DrawThebesLayerCallback callback =
    ClientManager()->GetThebesLayerCallback();
  void *data = ClientManager()->GetThebesLayerCallbackData();
  if (!callback) {
    ClientManager()->SetTransactionIncomplete();
    return;
  }

  // First time? Create a content client.
  if (!mContentClient) {
    mContentClient = new SimpleTiledContentClient(this, ClientManager());

    mContentClient->Connect();
    ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
    MOZ_ASSERT(mContentClient->GetForwarder());
  }

  // If the format changed, nothing is valid
  if (mContentClient->mTiledBuffer.HasFormatChanged()) {
    mValidRegion = nsIntRegion();
  }

  nsIntRegion invalidRegion = mVisibleRegion;
  invalidRegion.Sub(invalidRegion, mValidRegion);
  if (invalidRegion.IsEmpty()) {
    EndPaint(true);
    return;
  }

  const FrameMetrics& parentMetrics = GetParent()->GetFrameMetrics();

  nsIntRegion wantToPaintRegion = mVisibleRegion;

  // Only paint the mask layer on the first transaction.
  if (GetMaskLayer() && !ClientManager()->IsRepeatTransaction()) {
    ToClientLayer(GetMaskLayer())->RenderLayer();
  }

  // Fast path for no progressive updates, no low-precision updates and no
  // critical display-port set, or no display-port set.
  if (parentMetrics.mCriticalDisplayPort.IsEmpty() ||
      parentMetrics.mDisplayPort.IsEmpty())
  {
    mValidRegion = wantToPaintRegion;

    NS_ASSERTION(!ClientManager()->IsRepeatTransaction(), "Didn't paint our mask layer");

    mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
                                             callback, data);

    ClientManager()->Hold(this);

    mContentClient->UseTiledLayerBuffer();

    return;
  }

  // Calculate everything we need to perform the paint.
  BeginPaint();

  if (mPaintData.mPaintFinished) {
    return;
  }

  // Make sure that tiles that fall outside of the visible region are
  // discarded on the first update.
  if (!ClientManager()->IsRepeatTransaction()) {
    mValidRegion.And(mValidRegion, wantToPaintRegion);
    if (!mPaintData.mLayoutCriticalDisplayPort.IsEmpty()) {
      // Make sure that tiles that fall outside of the critical displayport are
      // discarded on the first update.
      mValidRegion.And(mValidRegion, mPaintData.mLayoutCriticalDisplayPort);
    }
  }

  nsIntRegion lowPrecisionInvalidRegion;
  if (!mPaintData.mLayoutCriticalDisplayPort.IsEmpty()) {
    // Clip the invalid region to the critical display-port
    invalidRegion.And(invalidRegion, mPaintData.mLayoutCriticalDisplayPort);
    if (invalidRegion.IsEmpty() && lowPrecisionInvalidRegion.IsEmpty()) {
      EndPaint(true);
      return;
    }
  }

  if (!invalidRegion.IsEmpty()) {
    mValidRegion = wantToPaintRegion;
    if (!mPaintData.mLayoutCriticalDisplayPort.IsEmpty()) {
      mValidRegion.And(mValidRegion, mPaintData.mLayoutCriticalDisplayPort);
    }
    mContentClient->mTiledBuffer.SetFrameResolution(mPaintData.mResolution);
    mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
                                             callback, data);

    ClientManager()->Hold(this);
    mContentClient->UseTiledLayerBuffer();

    EndPaint(false);
    return;
  }

  EndPaint(false);
}
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);
}
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();
}
Example #18
0
void
BasicContainerLayer::ComputeEffectiveTransforms(const Matrix4x4& 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.
  Matrix residual;
  Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface;
  if (!Extend3DContext() && !Is3DContextLeaf()) {
    // For 3D transform leaked from extended parent layer.
    idealTransform.ProjectTo2D();
  }

  if (!idealTransform.CanDraw2D()) {
    if (!Extend3DContext() ||
        (!idealTransform.Is2D() && Creates3DContextWithExtendingChildren())) {
      if (!Creates3DContextWithExtendingChildren()) {
        idealTransform.ProjectTo2D();
      }
      mEffectiveTransform = idealTransform;
      ComputeEffectiveTransformsForChildren(Matrix4x4());
      ComputeEffectiveTransformForMaskLayers(Matrix4x4());
      mUseIntermediateSurface = true;
      return;
    }

    mEffectiveTransform = idealTransform;
    ComputeEffectiveTransformsForChildren(idealTransform);
    ComputeEffectiveTransformForMaskLayers(idealTransform);
    mUseIntermediateSurface = false;
    return;
  }

  // With 2D transform or extended 3D context.

  Layer* child = GetFirstChild();
  bool hasSingleBlendingChild = false;
  if (!HasMultipleChildren() && child) {
    hasSingleBlendingChild = child->GetMixBlendMode() != CompositionOp::OP_OVER;
  }

  /* If we have a single childand it is not blending,, 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
   * Having a blend mode also always forces our own push group
   */
  mUseIntermediateSurface =
    GetMaskLayer() ||
    GetForceIsolatedGroup() ||
    (GetMixBlendMode() != CompositionOp::OP_OVER && HasMultipleChildren()) ||
    (GetEffectiveOpacity() != 1.0 && (HasMultipleChildren() || hasSingleBlendingChild));

  if (!Extend3DContext()) {
    idealTransform.ProjectTo2D();
  }
  mEffectiveTransform =
    !mUseIntermediateSurface ?
    idealTransform : SnapTransformTranslation(idealTransform, &residual);
  Matrix4x4 childTransformToSurface =
    (!mUseIntermediateSurface ||
     (mUseIntermediateSurface && !Extend3DContext() /* 2D */)) ?
    idealTransform : Matrix4x4::From2D(residual);
  ComputeEffectiveTransformsForChildren(childTransformToSurface);

  ComputeEffectiveTransformForMaskLayers(aTransformToSurface);
}
Example #19
0
void
ContainerLayerOGL::RenderLayer(int aPreviousFrameBuffer,
                               const nsIntPoint& aOffset)
{
  /**
   * Setup our temporary texture for rendering the contents of this container.
   */
  GLuint containerSurface;
  GLuint frameBuffer;

  nsIntPoint childOffset(aOffset);
  nsIntRect visibleRect = GetEffectiveVisibleRegion().GetBounds();

  nsIntRect cachedScissor = gl()->ScissorRect();
  gl()->PushScissorRect();
  mSupportsComponentAlphaChildren = false;

  float opacity = GetEffectiveOpacity();
  const gfx3DMatrix& transform = GetEffectiveTransform();
  bool needsFramebuffer = UseIntermediateSurface();
  if (needsFramebuffer) {
    nsIntRect framebufferRect = visibleRect;
    // we're about to create a framebuffer backed by textures to use as an intermediate
    // surface. What to do if its size (as given by framebufferRect) would exceed the
    // maximum texture size supported by the GL? The present code chooses the compromise
    // of just clamping the framebuffer's size to the max supported size.
    // This gives us a lower resolution rendering of the intermediate surface (children layers).
    // See bug 827170 for a discussion.
    GLint maxTexSize;
    gl()->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &maxTexSize);
    framebufferRect.width = std::min(framebufferRect.width, maxTexSize);
    framebufferRect.height = std::min(framebufferRect.height, maxTexSize);

    LayerManagerOGL::InitMode mode = LayerManagerOGL::InitModeClear;
    if (GetEffectiveVisibleRegion().GetNumRects() == 1 && 
        (GetContentFlags() & Layer::CONTENT_OPAQUE))
    {
      // don't need a background, we're going to paint all opaque stuff
      mSupportsComponentAlphaChildren = true;
      mode = LayerManagerOGL::InitModeNone;
    } else {
      const gfx3DMatrix& transform3D = GetEffectiveTransform();
      gfxMatrix transform;
      // If we have an opaque ancestor layer, then we can be sure that
      // all the pixels we draw into are either opaque already or will be
      // covered by something opaque. Otherwise copying up the background is
      // not safe.
      if (HasOpaqueAncestorLayer(this) &&
          transform3D.Is2D(&transform) && !transform.HasNonIntegerTranslation()) {
        mode = gfxPlatform::ComponentAlphaEnabled() ?
          LayerManagerOGL::InitModeCopy :
          LayerManagerOGL::InitModeClear;
        framebufferRect.x += transform.x0;
        framebufferRect.y += transform.y0;
        mSupportsComponentAlphaChildren = gfxPlatform::ComponentAlphaEnabled();
      }
    }

    gl()->PushViewportRect();
    framebufferRect -= childOffset;
    if (!mOGLManager->CompositingDisabled()) {
      if (!mOGLManager->CreateFBOWithTexture(framebufferRect,
                                          mode,
                                          aPreviousFrameBuffer,
                                          &frameBuffer,
                                          &containerSurface)) {
        gl()->PopViewportRect();
        gl()->PopScissorRect();
        gl()->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, aPreviousFrameBuffer);
        return;
      }
    }
    childOffset.x = visibleRect.x;
    childOffset.y = visibleRect.y;
  } else {
    frameBuffer = aPreviousFrameBuffer;
    mSupportsComponentAlphaChildren = (GetContentFlags() & Layer::CONTENT_OPAQUE) ||
      (GetParent() && GetParent()->SupportsComponentAlphaChildren());
  }

  nsAutoTArray<Layer*, 12> children;
  SortChildrenBy3DZOrder(children);

  /**
   * Render this container's contents.
   */
  for (uint32_t i = 0; i < children.Length(); i++) {
    LayerOGL* layerToRender = static_cast<LayerOGL*>(children.ElementAt(i)->ImplData());

    if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty()) {
      continue;
    }

    nsIntRect scissorRect = layerToRender->GetLayer()->
        CalculateScissorRect(cachedScissor, &mOGLManager->GetWorldTransform());
    if (scissorRect.IsEmpty()) {
      continue;
    }

    gl()->fScissor(scissorRect.x, 
                               scissorRect.y, 
                               scissorRect.width, 
                               scissorRect.height);

    layerToRender->RenderLayer(frameBuffer, childOffset);
    gl()->MakeCurrent();
  }


  if (needsFramebuffer) {
    // Unbind the current framebuffer and rebind the previous one.
#ifdef MOZ_DUMP_PAINTING
    if (gfxUtils::sDumpPainting) {
      nsRefPtr<gfxImageSurface> surf = 
        gl()->GetTexImage(containerSurface, true, mOGLManager->GetFBOTextureFormat());

      WriteSnapshotToDumpFile(this, surf);
    }
#endif
    
    // Restore the viewport
    gl()->PopViewportRect();
    nsIntRect viewport = gl()->ViewportRect();
    mOGLManager->SetupPipeline(viewport.width, viewport.height,
                            LayerManagerOGL::ApplyWorldTransform);
    gl()->PopScissorRect();

    if (!mOGLManager->CompositingDisabled()) {
      gl()->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, aPreviousFrameBuffer);
      gl()->fDeleteFramebuffers(1, &frameBuffer);

      gl()->fActiveTexture(LOCAL_GL_TEXTURE0);

      gl()->fBindTexture(mOGLManager->FBOTextureTarget(), containerSurface);

      MaskType maskType = MaskNone;
      if (GetMaskLayer()) {
        if (!GetTransform().CanDraw2D()) {
          maskType = Mask3d;
        } else {
          maskType = Mask2d;
        }
      }
      ShaderProgramOGL *rgb =
        mOGLManager->GetFBOLayerProgram(maskType);

      rgb->Activate();
      rgb->SetLayerQuadRect(visibleRect);
      rgb->SetLayerTransform(transform);
      rgb->SetTextureTransform(gfx3DMatrix());
      rgb->SetLayerOpacity(opacity);
      rgb->SetRenderOffset(aOffset);
      rgb->SetTextureUnit(0);
      rgb->LoadMask(GetMaskLayer());

      if (rgb->GetTexCoordMultiplierUniformLocation() != -1) {
        // 2DRect case, get the multiplier right for a sampler2DRect
        rgb->SetTexCoordMultiplier(visibleRect.width, visibleRect.height);
      }

      // Drawing is always flipped, but when copying between surfaces we want to avoid
      // this. Pass true for the flip parameter to introduce a second flip
      // that cancels the other one out.
      mOGLManager->BindAndDrawQuad(rgb, true);

      // Clean up resources.  This also unbinds the texture.
      gl()->fDeleteTextures(1, &containerSurface);
    }
  } else {
    gl()->PopScissorRect();
  }
}
 virtual void RenderLayer()
 {
   if (GetMaskLayer()) {
     ToClientLayer(GetMaskLayer())->RenderLayer();
   }
 }