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Fix failing assertion -- failure to pop reference frame

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closes #23438
This commit is contained in:
Daniel Alley 2020-03-29 18:06:48 -04:00
parent 15d8c6058b
commit 3258bcaa8b
3 changed files with 9 additions and 6 deletions
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5
components/layout/display_list/items.rs
View file

@ -195,7 +195,7 @@ pub struct StackingContext {
/// The clip and scroll info for this StackingContext.
pub parent_clipping_and_scrolling: ClippingAndScrolling,
/// The index of the reference frame that this stacking context estalishes.
/// The index of the reference frame that this stacking context establishes.
pub established_reference_frame: Option<ClipScrollNodeIndex>,
}
@ -261,6 +261,7 @@ impl StackingContext {
let pop_item = DisplayItem::PopStackingContext(Box::new(PopStackingContextItem {
base: base_item.clone(),
stacking_context_id: self.id,
established_reference_frame: self.established_reference_frame.is_some(),
}));
let push_item = DisplayItem::PushStackingContext(Box::new(PushStackingContextItem {
@ -657,6 +658,8 @@ pub struct PopStackingContextItem {
pub base: BaseDisplayItem,
pub stacking_context_id: StackingContextId,
pub established_reference_frame: bool,
}
/// Starts a group of items inside a particular scroll root.

7
components/layout/display_list/webrender_helpers.rs
View file

@ -186,7 +186,7 @@ impl DisplayItem {
);
IsContentful(false)
},
DisplayItem::PushStackingContext(ref mut item) => {
DisplayItem::PushStackingContext(ref item) => {
let stacking_context = &item.stacking_context;
debug_assert_eq!(stacking_context.context_type, StackingContextType::Real);
@ -252,8 +252,11 @@ impl DisplayItem {
builder.push_item(&WrDisplayItem::PushStackingContext(wr_item));
IsContentful(false)
},
DisplayItem::PopStackingContext(_) => {
DisplayItem::PopStackingContext(ref item) => {
builder.pop_stacking_context();
if item.established_reference_frame {
builder.pop_reference_frame();
}
IsContentful(false)
},
DisplayItem::DefineClipScrollNode(ref mut item) => {

3
tests/wpt/metadata/css/compositing/mix-blend-mode/mix-blend-mode-sibling-with-3D-transform.html.ini
View file

@ -1,3 +0,0 @@
[mix-blend-mode-sibling-with-3D-transform.html]
type: reftest
expected: FAIL