Ejemplo n.º 1
0
void
DrawTargetD2D1::DrawSurface(SourceSurface *aSurface,
                            const Rect &aDest,
                            const Rect &aSource,
                            const DrawSurfaceOptions &aSurfOptions,
                            const DrawOptions &aOptions)
{
  RefPtr<ID2D1Image> image = GetImageForSurface(aSurface, ExtendMode::CLAMP);

  if (!image) {
    gfxWarning() << *this << ": Unable to get D2D image for surface.";
    return;
  }

  PrepareForDrawing(aOptions.mCompositionOp, ColorPattern(Color()));

  D2D1_RECT_F samplingBounds;

  if (aSurfOptions.mSamplingBounds == SamplingBounds::BOUNDED) {
    samplingBounds = D2DRect(aSource);
  } else {
    samplingBounds = D2D1::RectF(0, 0, Float(aSurface->GetSize().width), Float(aSurface->GetSize().height));
  }

  Float xScale = aDest.width / aSource.width;
  Float yScale = aDest.height / aSource.height;

  RefPtr<ID2D1ImageBrush> brush;

  // Here we scale the source pattern up to the size and position where we want
  // it to be.
  Matrix transform;
  transform.Translate(aDest.x, aDest.y);
  transform.Scale(xScale, yScale);

  mDC->CreateImageBrush(image, D2D1::ImageBrushProperties(samplingBounds),
                        D2D1::BrushProperties(aOptions.mAlpha, D2DMatrix(transform)),
                        byRef(brush));
  mDC->FillRectangle(D2DRect(aDest), brush);

  FinalizeDrawing(aOptions.mCompositionOp, ColorPattern(Color()));
}
Ejemplo n.º 2
0
static void
FillSurface(DrawTarget* aDT, const nsIntRegion& aRegion,
            const nsIntPoint& aOffset, const gfxRGBA& aColor)
{
    nsIntRegionRectIterator iter(aRegion);
    const nsIntRect* r;
    while ((r = iter.Next()) != nullptr) {
        aDT->FillRect(Rect(r->x - aOffset.x, r->y - aOffset.y,
                           r->width, r->height),
                      ColorPattern(ToColor(aColor)));
    }
}
Ejemplo n.º 3
0
bool
TextureClientD3D11::Lock(OpenMode aMode)
{
  if (!IsAllocated()) {
    return false;
  }
  MOZ_ASSERT(!mIsLocked, "The Texture is already locked!");

  if (mTexture) {
    MOZ_ASSERT(!mTexture10);
    mIsLocked = LockD3DTexture(mTexture.get());
  } else {
    MOZ_ASSERT(!mTexture);
    mIsLocked = LockD3DTexture(mTexture10.get());
  }
  if (!mIsLocked) {
    return false;
  }

  if (NS_IsMainThread()) {
    // Make sure that successful write-lock means we will have a DrawTarget to
    // write into.
    if (aMode & OpenMode::OPEN_WRITE) {
      mDrawTarget = BorrowDrawTarget();
      if (!mDrawTarget) {
        Unlock();
        return false;
      }
    }

    if (mNeedsClear) {
      mDrawTarget = BorrowDrawTarget();
      if (!mDrawTarget) {
        Unlock();
        return false;
      }
      mDrawTarget->ClearRect(Rect(0, 0, GetSize().width, GetSize().height));
      mNeedsClear = false;
    }
    if (mNeedsClearWhite) {
      mDrawTarget = BorrowDrawTarget();
      if (!mDrawTarget) {
        Unlock();
        return false;
      }
      mDrawTarget->FillRect(Rect(0, 0, GetSize().width, GetSize().height), ColorPattern(Color(1.0, 1.0, 1.0, 1.0)));
      mNeedsClearWhite = false;
    }
  }

  return true;
}
Ejemplo n.º 4
0
void
DrawTargetD2D1::DrawFilter(FilterNode *aNode,
                           const Rect &aSourceRect,
                           const Point &aDestPoint,
                           const DrawOptions &aOptions)
{
  if (aNode->GetBackendType() != FILTER_BACKEND_DIRECT2D1_1) {
    gfxWarning() << *this << ": Incompatible filter passed to DrawFilter.";
    return;
  }

  PrepareForDrawing(aOptions.mCompositionOp, ColorPattern(Color()));

  mDC->DrawImage(static_cast<FilterNodeD2D1*>(aNode)->OutputEffect(), D2DPoint(aDestPoint), D2DRect(aSourceRect));
}
Ejemplo n.º 5
0
void
BasicCompositor::EndFrame()
{
  // Pop aClipRectIn/bounds rect
  mRenderTarget->mDrawTarget->PopClip();

  if (gfxPrefs::WidgetUpdateFlashing()) {
    float r = float(rand()) / RAND_MAX;
    float g = float(rand()) / RAND_MAX;
    float b = float(rand()) / RAND_MAX;
    // We're still clipped to mInvalidRegion, so just fill the bounds.
    mRenderTarget->mDrawTarget->FillRect(
      IntRectToRect(mInvalidRegion.GetBounds()).ToUnknownRect(),
      ColorPattern(Color(r, g, b, 0.2f)));
  }

  // Pop aInvalidregion
  mRenderTarget->mDrawTarget->PopClip();

  if (mTarget || mRenderTarget->mDrawTarget != mDrawTarget) {
    // Note: Most platforms require us to buffer drawing to the widget surface.
    // That's why we don't draw to mDrawTarget directly.
    RefPtr<SourceSurface> source = mRenderTarget->mDrawTarget->Snapshot();
    RefPtr<DrawTarget> dest(mTarget ? mTarget : mDrawTarget);

    nsIntPoint offset = mTarget ? mTargetBounds.TopLeft() : nsIntPoint();

    // The source DrawTarget is clipped to the invalidation region, so we have
    // to copy the individual rectangles in the region or else we'll draw blank
    // pixels.
    for (auto iter = mInvalidRegion.RectIter(); !iter.Done(); iter.Next()) {
      const LayoutDeviceIntRect& r = iter.Get();
      dest->CopySurface(source,
                        IntRect(r.x, r.y, r.width, r.height) - mRenderTarget->GetOrigin(),
                        IntPoint(r.x, r.y) - offset);
    }
  }

  if (!mTarget) {
    mWidget->EndRemoteDrawingInRegion(mDrawTarget, mInvalidRegion);
  }

  mDrawTarget = nullptr;
  mRenderTarget = nullptr;
}
Ejemplo n.º 6
0
void
BasicCompositor::EndFrame()
{
  // Pop aClipRectIn/bounds rect
  mRenderTarget->mDrawTarget->PopClip();

  if (gfxPrefs::WidgetUpdateFlashing()) {
    float r = float(rand()) / RAND_MAX;
    float g = float(rand()) / RAND_MAX;
    float b = float(rand()) / RAND_MAX;
    // We're still clipped to mInvalidRegion, so just fill the bounds.
    mRenderTarget->mDrawTarget->FillRect(ToRect(mInvalidRegion.GetBounds()),
                                         ColorPattern(Color(r, g, b, 0.2f)));
  }

  // Pop aInvalidregion
  mRenderTarget->mDrawTarget->PopClip();

  // Note: Most platforms require us to buffer drawing to the widget surface.
  // That's why we don't draw to mDrawTarget directly.
  RefPtr<SourceSurface> source = mRenderTarget->mDrawTarget->Snapshot();
  RefPtr<DrawTarget> dest(mTarget ? mTarget : mDrawTarget);

  nsIntPoint offset = mTarget ? mTargetBounds.TopLeft() : nsIntPoint();

  // The source DrawTarget is clipped to the invalidation region, so we have
  // to copy the individual rectangles in the region or else we'll draw blank
  // pixels.
  nsIntRegionRectIterator iter(mInvalidRegion);
  for (const nsIntRect *r = iter.Next(); r; r = iter.Next()) {
    dest->CopySurface(source,
                      IntRect(r->x - mInvalidRect.x, r->y - mInvalidRect.y, r->width, r->height),
                      IntPoint(r->x - offset.x, r->y - offset.y));
  }
  if (!mTarget) {
    mWidget->EndRemoteDrawing();
  }

  mDrawTarget = nullptr;
  mRenderTarget = nullptr;
}
void
ClientSingleTiledLayerBuffer::PaintThebes(const nsIntRegion& aNewValidRegion,
                                          const nsIntRegion& aPaintRegion,
                                          const nsIntRegion& aDirtyRegion,
                                          LayerManager::DrawPaintedLayerCallback aCallback,
                                          void* aCallbackData)
{
  // Compare layer visible region size to current backbuffer size, discard if not matching.
  IntSize size = mPaintedLayer->GetVisibleRegion().GetBounds().Size();
  IntPoint origin = mPaintedLayer->GetVisibleRegion().GetBounds().TopLeft();
  nsIntRegion paintRegion = aPaintRegion;
  if (mSize != size ||
      mTilingOrigin != origin) {
    ResetPaintedAndValidState();
    mSize = size;
    mTilingOrigin = origin;
    paintRegion = aNewValidRegion;
  }

  SurfaceMode mode;
  gfxContentType content = GetContentType(&mode);
  mFormat = gfxPlatform::GetPlatform()->OptimalFormatForContent(content);

  if (mTile.IsPlaceholderTile()) {
    mTile.SetLayerManager(mManager);
    mTile.SetTextureAllocator(this);
  }
  mTile.SetCompositableClient(mCompositableClient);

  // The dirty region relative to the top-left of the tile.
  nsIntRegion tileDirtyRegion = paintRegion.MovedBy(-mTilingOrigin);

  nsIntRegion extraPainted;
  RefPtr<TextureClient> backBufferOnWhite;
  RefPtr<TextureClient> backBuffer =
    mTile.GetBackBuffer(tileDirtyRegion,
                        content, mode,
                        extraPainted,
                        &backBufferOnWhite);

  mTile.mUpdateRect = tileDirtyRegion.GetBounds().Union(extraPainted.GetBounds());

  extraPainted.MoveBy(mTilingOrigin);
  extraPainted.And(extraPainted, aNewValidRegion);
  mPaintedRegion.OrWith(paintRegion);
  mPaintedRegion.OrWith(extraPainted);

  if (!backBuffer) {
    return;
  }

  RefPtr<DrawTarget> dt = backBuffer->BorrowDrawTarget();
  RefPtr<DrawTarget> dtOnWhite;
  if (backBufferOnWhite) {
    dtOnWhite = backBufferOnWhite->BorrowDrawTarget();
  }

  if (mode != SurfaceMode::SURFACE_OPAQUE) {
    nsIntRegionRectIterator iter(tileDirtyRegion);
    const IntRect *iterRect;
    while ((iterRect = iter.Next())) {
      if (dtOnWhite) {
        dt->FillRect(Rect(iterRect->x, iterRect->y, iterRect->width, iterRect->height),
                     ColorPattern(Color(0.0, 0.0, 0.0, 1.0)));
        dtOnWhite->FillRect(Rect(iterRect->x, iterRect->y, iterRect->width, iterRect->height),
                            ColorPattern(Color(1.0, 1.0, 1.0, 1.0)));
      } else {
        dt->ClearRect(Rect(iterRect->x, iterRect->y, iterRect->width, iterRect->height));
      }
    }
  }

  if (dtOnWhite) {
    dt = Factory::CreateDualDrawTarget(dt, dtOnWhite);
    dtOnWhite = nullptr;
  }

  {
    nsRefPtr<gfxContext> ctx = new gfxContext(dt);
    ctx->SetMatrix(ctx->CurrentMatrix().Translate(-mTilingOrigin.x, -mTilingOrigin.y));

    aCallback(mPaintedLayer, ctx, paintRegion, &paintRegion, DrawRegionClip::DRAW, nsIntRegion(), aCallbackData);
  }

  // Mark the area we just drew into the back buffer as invalid in the front buffer as they're
  // now out of sync.
  mTile.mInvalidFront.OrWith(tileDirtyRegion);

  // The new buffer is now validated, remove the dirty region from it.
  mTile.mInvalidBack.SubOut(tileDirtyRegion);

  dt = nullptr;

  mTile.Flip();
  UnlockTile(mTile);

  if (backBuffer->HasInternalBuffer()) {
    // If our new buffer has an internal buffer, we don't want to keep another
    // TextureClient around unnecessarily, so discard the back-buffer.
    mTile.DiscardBackBuffer();
  }

  mValidRegion = aNewValidRegion;
  mLastPaintSurfaceMode = mode;
  mLastPaintContentType = content;
}
Ejemplo n.º 8
0
RotatedContentBuffer::PaintState
RotatedContentBuffer::BeginPaint(ThebesLayer* aLayer, ContentType aContentType,
                                 uint32_t aFlags)
{
  PaintState result;
  // We need to disable rotation if we're going to be resampled when
  // drawing, because we might sample across the rotation boundary.
  bool canHaveRotation = gfxPlatform::BufferRotationEnabled() &&
                         !(aFlags & (PAINT_WILL_RESAMPLE | PAINT_NO_ROTATION));

  nsIntRegion validRegion = aLayer->GetValidRegion();

  Layer::SurfaceMode mode;
  ContentType contentType;
  nsIntRegion neededRegion;
  bool canReuseBuffer;
  nsIntRect destBufferRect;

  while (true) {
    mode = aLayer->GetSurfaceMode();
    contentType = aContentType;
    neededRegion = aLayer->GetVisibleRegion();
    canReuseBuffer = HaveBuffer() && BufferSizeOkFor(neededRegion.GetBounds().Size());

    if (canReuseBuffer) {
      if (mBufferRect.Contains(neededRegion.GetBounds())) {
        // We don't need to adjust mBufferRect.
        destBufferRect = mBufferRect;
      } else if (neededRegion.GetBounds().Size() <= mBufferRect.Size()) {
        // The buffer's big enough but doesn't contain everything that's
        // going to be visible. We'll move it.
        destBufferRect = nsIntRect(neededRegion.GetBounds().TopLeft(), mBufferRect.Size());
      } else {
        destBufferRect = neededRegion.GetBounds();
      }
    } else {
      // We won't be reusing the buffer.  Compute a new rect.
      destBufferRect = ComputeBufferRect(neededRegion.GetBounds());
    }

    if (mode == Layer::SURFACE_COMPONENT_ALPHA) {
#if defined(MOZ_GFX_OPTIMIZE_MOBILE) || defined(MOZ_WIDGET_GONK)
      mode = Layer::SURFACE_SINGLE_CHANNEL_ALPHA;
#else
      if (!aLayer->GetParent() ||
          !aLayer->GetParent()->SupportsComponentAlphaChildren() ||
          !aLayer->Manager()->IsCompositingCheap() ||
          !aLayer->AsShadowableLayer() ||
          !aLayer->AsShadowableLayer()->HasShadow() ||
          !gfxPlatform::ComponentAlphaEnabled()) {
        mode = Layer::SURFACE_SINGLE_CHANNEL_ALPHA;
      } else {
        contentType = GFX_CONTENT_COLOR;
      }
#endif
    }

    if ((aFlags & PAINT_WILL_RESAMPLE) &&
        (!neededRegion.GetBounds().IsEqualInterior(destBufferRect) ||
         neededRegion.GetNumRects() > 1)) {
      // The area we add to neededRegion might not be painted opaquely
      if (mode == Layer::SURFACE_OPAQUE) {
        contentType = GFX_CONTENT_COLOR_ALPHA;
        mode = Layer::SURFACE_SINGLE_CHANNEL_ALPHA;
      }

      // We need to validate the entire buffer, to make sure that only valid
      // pixels are sampled
      neededRegion = destBufferRect;
    }

    // If we have an existing buffer, but the content type has changed or we
    // have transitioned into/out of component alpha, then we need to recreate it.
    if (HaveBuffer() &&
        (contentType != BufferContentType() ||
        (mode == Layer::SURFACE_COMPONENT_ALPHA) != HaveBufferOnWhite())) {

      // We're effectively clearing the valid region, so we need to draw
      // the entire needed region now.
      result.mRegionToInvalidate = aLayer->GetValidRegion();
      validRegion.SetEmpty();
      Clear();
      // Restart decision process with the cleared buffer. We can only go
      // around the loop one more iteration, since mDTBuffer is null now.
      continue;
    }

    break;
  }

  NS_ASSERTION(destBufferRect.Contains(neededRegion.GetBounds()),
               "Destination rect doesn't contain what we need to paint");

  result.mRegionToDraw.Sub(neededRegion, validRegion);
  if (result.mRegionToDraw.IsEmpty())
    return result;

  nsIntRect drawBounds = result.mRegionToDraw.GetBounds();
  RefPtr<DrawTarget> destDTBuffer;
  RefPtr<DrawTarget> destDTBufferOnWhite;
  uint32_t bufferFlags = canHaveRotation ? ALLOW_REPEAT : 0;
  if (mode == Layer::SURFACE_COMPONENT_ALPHA) {
    bufferFlags |= BUFFER_COMPONENT_ALPHA;
  }
  if (canReuseBuffer) {
    if (!EnsureBuffer()) {
      return result;
    }
    nsIntRect keepArea;
    if (keepArea.IntersectRect(destBufferRect, mBufferRect)) {
      // Set mBufferRotation so that the pixels currently in mDTBuffer
      // will still be rendered in the right place when mBufferRect
      // changes to destBufferRect.
      nsIntPoint newRotation = mBufferRotation +
        (destBufferRect.TopLeft() - mBufferRect.TopLeft());
      WrapRotationAxis(&newRotation.x, mBufferRect.width);
      WrapRotationAxis(&newRotation.y, mBufferRect.height);
      NS_ASSERTION(nsIntRect(nsIntPoint(0,0), mBufferRect.Size()).Contains(newRotation),
                   "newRotation out of bounds");
      int32_t xBoundary = destBufferRect.XMost() - newRotation.x;
      int32_t yBoundary = destBufferRect.YMost() - newRotation.y;
      if ((drawBounds.x < xBoundary && xBoundary < drawBounds.XMost()) ||
          (drawBounds.y < yBoundary && yBoundary < drawBounds.YMost()) ||
          (newRotation != nsIntPoint(0,0) && !canHaveRotation)) {
        // The stuff we need to redraw will wrap around an edge of the
        // buffer, so move the pixels we can keep into a position that
        // lets us redraw in just one quadrant.
        if (mBufferRotation == nsIntPoint(0,0)) {
          nsIntRect srcRect(nsIntPoint(0, 0), mBufferRect.Size());
          nsIntPoint dest = mBufferRect.TopLeft() - destBufferRect.TopLeft();
          MOZ_ASSERT(mDTBuffer);
          mDTBuffer->CopyRect(IntRect(srcRect.x, srcRect.y, srcRect.width, srcRect.height),
                              IntPoint(dest.x, dest.y));
          if (mode == Layer::SURFACE_COMPONENT_ALPHA) {
            if (!EnsureBufferOnWhite()) {
              return result;
            }
            MOZ_ASSERT(mDTBufferOnWhite);
            mDTBufferOnWhite->CopyRect(IntRect(srcRect.x, srcRect.y, srcRect.width, srcRect.height),
                                       IntPoint(dest.x, dest.y));
          }
          result.mDidSelfCopy = true;
          mDidSelfCopy = true;
          // Don't set destBuffer; we special-case self-copies, and
          // just did the necessary work above.
          mBufferRect = destBufferRect;
        } else {
          // With azure and a data surface perform an buffer unrotate
          // (SelfCopy).
          unsigned char* data;
          IntSize size;
          int32_t stride;
          SurfaceFormat format;

          if (mDTBuffer->LockBits(&data, &size, &stride, &format)) {
            uint8_t bytesPerPixel = BytesPerPixel(format);
            BufferUnrotate(data,
                           size.width * bytesPerPixel,
                           size.height, stride,
                           newRotation.x * bytesPerPixel, newRotation.y);
            mDTBuffer->ReleaseBits(data);

            if (mode == Layer::SURFACE_COMPONENT_ALPHA) {
              if (!EnsureBufferOnWhite()) {
                return result;
              }
              MOZ_ASSERT(mDTBufferOnWhite);
              mDTBufferOnWhite->LockBits(&data, &size, &stride, &format);
              uint8_t bytesPerPixel = BytesPerPixel(format);
              BufferUnrotate(data,
                             size.width * bytesPerPixel,
                             size.height, stride,
                             newRotation.x * bytesPerPixel, newRotation.y);
              mDTBufferOnWhite->ReleaseBits(data);
            }

            // Buffer unrotate moves all the pixels, note that
            // we self copied for SyncBackToFrontBuffer
            result.mDidSelfCopy = true;
            mDidSelfCopy = true;
            mBufferRect = destBufferRect;
            mBufferRotation = nsIntPoint(0, 0);
          }

          if (!result.mDidSelfCopy) {
            destBufferRect = ComputeBufferRect(neededRegion.GetBounds());
            CreateBuffer(contentType, destBufferRect, bufferFlags,
                         &destDTBuffer, &destDTBufferOnWhite);
            if (!destDTBuffer) {
              return result;
            }
          }
        }
      } else {
        mBufferRect = destBufferRect;
        mBufferRotation = newRotation;
      }
    } else {
      // No pixels are going to be kept. The whole visible region
      // will be redrawn, so we don't need to copy anything, so we don't
      // set destBuffer.
      mBufferRect = destBufferRect;
      mBufferRotation = nsIntPoint(0,0);
    }
  } else {
    // The buffer's not big enough, so allocate a new one
    CreateBuffer(contentType, destBufferRect, bufferFlags,
                 &destDTBuffer, &destDTBufferOnWhite);
    if (!destDTBuffer) {
      return result;
    }
  }

  NS_ASSERTION(!(aFlags & PAINT_WILL_RESAMPLE) || destBufferRect == neededRegion.GetBounds(),
               "If we're resampling, we need to validate the entire buffer");

  // If we have no buffered data already, then destBuffer will be a fresh buffer
  // and we do not need to clear it below.
  bool isClear = !HaveBuffer();

  if (destDTBuffer) {
    if (!isClear && (mode != Layer::SURFACE_COMPONENT_ALPHA || HaveBufferOnWhite())) {
      // Copy the bits
      nsIntPoint offset = -destBufferRect.TopLeft();
      Matrix mat;
      mat.Translate(offset.x, offset.y);
      destDTBuffer->SetTransform(mat);
      if (!EnsureBuffer()) {
        return result;
      }
       MOZ_ASSERT(mDTBuffer, "Have we got a Thebes buffer for some reason?");
      DrawBufferWithRotation(destDTBuffer, BUFFER_BLACK, 1.0, OP_SOURCE);
      destDTBuffer->SetTransform(Matrix());

      if (mode == Layer::SURFACE_COMPONENT_ALPHA) {
        NS_ASSERTION(destDTBufferOnWhite, "Must have a white buffer!");
        destDTBufferOnWhite->SetTransform(mat);
        if (!EnsureBufferOnWhite()) {
          return result;
        }
        MOZ_ASSERT(mDTBufferOnWhite, "Have we got a Thebes buffer for some reason?");
        DrawBufferWithRotation(destDTBufferOnWhite, BUFFER_WHITE, 1.0, OP_SOURCE);
        destDTBufferOnWhite->SetTransform(Matrix());
      }
    }

    mDTBuffer = destDTBuffer.forget();
    mDTBufferOnWhite = destDTBufferOnWhite.forget();
    mBufferRect = destBufferRect;
    mBufferRotation = nsIntPoint(0,0);
  }
  NS_ASSERTION(canHaveRotation || mBufferRotation == nsIntPoint(0,0),
               "Rotation disabled, but we have nonzero rotation?");

  nsIntRegion invalidate;
  invalidate.Sub(aLayer->GetValidRegion(), destBufferRect);
  result.mRegionToInvalidate.Or(result.mRegionToInvalidate, invalidate);

  nsIntPoint topLeft;
  result.mContext = GetContextForQuadrantUpdate(drawBounds, BUFFER_BOTH, &topLeft);
  result.mClip = CLIP_DRAW_SNAPPED;

  if (mode == Layer::SURFACE_COMPONENT_ALPHA) {
    MOZ_ASSERT(mDTBuffer && mDTBufferOnWhite);
    nsIntRegionRectIterator iter(result.mRegionToDraw);
    const nsIntRect *iterRect;
    while ((iterRect = iter.Next())) {
      mDTBuffer->FillRect(Rect(iterRect->x, iterRect->y, iterRect->width, iterRect->height),
                          ColorPattern(Color(0.0, 0.0, 0.0, 1.0)));
      mDTBufferOnWhite->FillRect(Rect(iterRect->x, iterRect->y, iterRect->width, iterRect->height),
                                 ColorPattern(Color(1.0, 1.0, 1.0, 1.0)));
    }
  } else if (contentType == GFX_CONTENT_COLOR_ALPHA && !isClear) {
    nsIntRegionRectIterator iter(result.mRegionToDraw);
    const nsIntRect *iterRect;
    while ((iterRect = iter.Next())) {
      result.mContext->GetDrawTarget()->ClearRect(Rect(iterRect->x, iterRect->y, iterRect->width, iterRect->height));
    }
  }

  return result;
}