void TexturedLayerMLGPU::AssignBigImage(FrameBuilder* aBuilder,
RenderViewMLGPU* aView,
BigImageIterator* aIter,
const Maybe<Polygon>& aGeometry) {
const Matrix4x4& transform = GetLayer()->GetEffectiveTransformForBuffer();
// Note that we don't need to assign these in any particular order, since
// they do not overlap.
do {
IntRect tileRect = aIter->GetTileRect();
IntRect rect = tileRect.Intersect(mPictureRect);
if (rect.IsEmpty()) {
continue;
}
{
Rect screenRect = transform.TransformBounds(Rect(rect));
screenRect.MoveBy(-aView->GetTargetOffset());
screenRect =
screenRect.Intersect(Rect(mComputedClipRect.ToUnknownRect()));
if (screenRect.IsEmpty()) {
// This tile is not in the clip region, so skip it.
continue;
}
}
RefPtr<TextureSource> tile = mBigImageTexture->ExtractCurrentTile();
if (!tile) {
continue;
}
// Create a temporary item.
RefPtr<TempImageLayerMLGPU> item =
new TempImageLayerMLGPU(aBuilder->GetManager());
item->Init(this, tile, rect);
Maybe<Polygon> geometry = aGeometry;
item->AddBoundsToView(aBuilder, aView, std::move(geometry));
// Since the layer tree is not holding this alive, we have to ask the
// FrameBuilder to do it for us.
aBuilder->RetainTemporaryLayer(item);
} while (aIter->NextTile());
}
