Update WR (preserve-3d, AA improvements)

components/compositing/compositor.rs

@@ -39,7 +39,7 @@ use style_traits::viewport::ViewportConstraints;
 use time::{precise_time_ns, precise_time_s};
 use touch::{TouchHandler, TouchAction};
 use webrender;
-use webrender_traits::{self, ClipId, LayoutPoint, ScrollEventPhase, ScrollLocation};
+use webrender_traits::{self, ClipId, LayoutPoint, ScrollEventPhase, ScrollLocation, ScrollClamping};
 use windowing::{self, MouseWindowEvent, WindowEvent, WindowMethods, WindowNavigateMsg};
 
 #[derive(Debug, PartialEq)]
@@ -777,7 +777,8 @@ impl<Window: WindowMethods> IOCompositor<Window> {
     }
 
     fn scroll_fragment_to_point(&mut self, id: ClipId, point: Point2D<f32>) {
-        self.webrender_api.scroll_node_with_id(LayoutPoint::from_untyped(&point), id);
+        self.webrender_api.scroll_node_with_id(LayoutPoint::from_untyped(&point), id,
+                                               ScrollClamping::ToContentBounds);
     }
 
     fn handle_window_message(&mut self, event: WindowEvent) {

components/gfx/display_list/mod.rs

@@ -48,6 +48,16 @@ pub struct DisplayList {
 }
 
 impl DisplayList {
+    /// Return the bounds of this display list based on the dimensions of the root
+    /// stacking context.
+    pub fn bounds(&self) -> Rect<Au> {
+        match self.list.get(0) {
+            Some(&DisplayItem::PushStackingContext(ref item)) => item.stacking_context.bounds,
+            Some(_) => unreachable!("Root element of display list not stacking context."),
+            None => Rect::zero(),
+        }
+    }
+
     // Returns the text index within a node for the point of interest.
     pub fn text_index(&self,
                       node: OpaqueNode,

components/layout/webrender_helpers.rs

@@ -215,7 +215,8 @@ impl WebRenderDisplayListConverter for DisplayList {
     fn convert_to_webrender(&self, pipeline_id: PipelineId) -> DisplayListBuilder {
         let traversal = DisplayListTraversal::new(self);
         let webrender_pipeline_id = pipeline_id.to_webrender();
-        let mut builder = DisplayListBuilder::new(webrender_pipeline_id);
+        let mut builder = DisplayListBuilder::new(webrender_pipeline_id,
+                                                  self.bounds().size.to_sizef());
 
         let mut current_scroll_root_id = ClipId::root_scroll_node(webrender_pipeline_id);
         builder.push_clip_id(current_scroll_root_id);
@@ -280,7 +281,7 @@ impl WebRenderDisplayItemConverter for DisplayItem {
                                       item.text_run.font_key,
                                       item.text_color,
                                       item.text_run.actual_pt_size,
-                                      item.blur_radius,
+                                      item.blur_radius.to_f32_px(),
                                       None);
                 }
             }

tests/wpt/metadata-css/css-backgrounds-3_dev/html4/border-radius-clipping.htm.ini

@@ -1,3 +1,3 @@
 [border-radius-clipping.htm]
   type: reftest
-  expected: FAIL
+  disabled: https://github.com/servo/webrender/issues/1256

tests/wpt/metadata-css/css-transforms-1_dev/html/transform-3d-rotateY-stair-above-001.htm.ini

@@ -0,0 +1,3 @@
+[transform-3d-rotateY-stair-above-001.htm]
+  type: reftest
+  expected: FAIL