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Update webrender.

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This commit is contained in:
Josh Matthews 2019-01-03 13:48:00 -05:00
parent fb95f9df9c
commit 9f855ae847
15 changed files with 370 additions and 214 deletions
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238
components/layout/display_list/webrender_helpers.rs
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@ -7,55 +7,67 @@
// This might be achieved by sharing types between WR and Servo display lists, or
// completely converting layout to directly generate WebRender display lists, for example.
use crate::display_list::items::{ClipScrollNode, ClipScrollNodeIndex, ClipScrollNodeType};
use crate::display_list::items::{ClipScrollNode, ClipScrollNodeType};
use crate::display_list::items::{DisplayItem, DisplayList, StackingContextType};
use msg::constellation_msg::PipelineId;
use webrender_api::{self, ClipAndScrollInfo, ClipId, DisplayListBuilder, RasterSpace};
use webrender_api::{self, ClipId, DisplayListBuilder, RasterSpace, SpaceAndClipInfo, SpatialId};
use webrender_api::{LayoutPoint, SpecificDisplayItem};
pub trait WebRenderDisplayListConverter {
fn convert_to_webrender(&self, pipeline_id: PipelineId) -> DisplayListBuilder;
}
struct ClipScrollState {
clip_ids: Vec<Option<ClipId>>,
spatial_ids: Vec<Option<SpatialId>>,
active_clip_id: ClipId,
active_spatial_id: SpatialId,
}
trait WebRenderDisplayItemConverter {
fn prim_info(&self) -> webrender_api::LayoutPrimitiveInfo;
fn convert_to_webrender(
&self,
builder: &mut DisplayListBuilder,
clip_scroll_nodes: &[ClipScrollNode],
clip_ids: &mut Vec<Option<ClipId>>,
current_clip_and_scroll_info: &mut ClipAndScrollInfo,
state: &mut ClipScrollState,
builder: &mut DisplayListBuilder,
);
}
impl WebRenderDisplayListConverter for DisplayList {
fn convert_to_webrender(&self, pipeline_id: PipelineId) -> DisplayListBuilder {
let mut builder = DisplayListBuilder::with_capacity(
pipeline_id.to_webrender(),
self.bounds().size,
1024 * 1024,
); // 1 MB of space
let mut current_clip_and_scroll_info = pipeline_id.root_clip_and_scroll_info();
builder.push_clip_and_scroll_info(current_clip_and_scroll_info);
let mut clip_ids = Vec::with_capacity(self.clip_scroll_nodes.len());
clip_ids.resize(self.clip_scroll_nodes.len(), None);
let mut clip_ids = vec![None; self.clip_scroll_nodes.len()];
let mut spatial_ids = vec![None; self.clip_scroll_nodes.len()];
// We need to add the WebRender root reference frame and root scroll node ids
// here manually, because WebRender creates these automatically.
// We also follow the "old" WebRender API for clip/scroll for now,
// hence both arrays are initialized based on FIRST_SPATIAL_NODE_INDEX,
// while FIRST_CLIP_NODE_INDEX is not taken into account.
let webrender_pipeline = pipeline_id.to_webrender();
clip_ids[0] = Some(ClipId::root_reference_frame(webrender_pipeline));
clip_ids[1] = Some(ClipId::root_scroll_node(webrender_pipeline));
clip_ids[0] = Some(ClipId::root(webrender_pipeline));
clip_ids[1] = Some(ClipId::root(webrender_pipeline));
spatial_ids[0] = Some(SpatialId::root_reference_frame(webrender_pipeline));
spatial_ids[1] = Some(SpatialId::root_scroll_node(webrender_pipeline));
let mut state = ClipScrollState {
clip_ids,
spatial_ids,
active_clip_id: ClipId::root(webrender_pipeline),
active_spatial_id: SpatialId::root_scroll_node(webrender_pipeline),
};
let mut builder = DisplayListBuilder::with_capacity(
webrender_pipeline,
self.bounds().size,
1024 * 1024, // 1 MB of space
);
for item in &self.list {
item.convert_to_webrender(
&mut builder,
&self.clip_scroll_nodes,
&mut clip_ids,
&mut current_clip_and_scroll_info,
);
item.convert_to_webrender(&self.clip_scroll_nodes, &mut state, &mut builder);
}
builder
}
}
@ -77,158 +89,214 @@ impl WebRenderDisplayItemConverter for DisplayItem {
fn convert_to_webrender(
&self,
builder: &mut DisplayListBuilder,
clip_scroll_nodes: &[ClipScrollNode],
clip_ids: &mut Vec<Option<ClipId>>,
current_clip_and_scroll_info: &mut ClipAndScrollInfo,
state: &mut ClipScrollState,
builder: &mut DisplayListBuilder,
) {
let get_id = |clip_ids: &[Option<ClipId>], index: ClipScrollNodeIndex| -> ClipId {
match clip_ids[index.to_index()] {
Some(id) => id,
None => unreachable!("Tried to use WebRender ClipId before it was defined."),
}
};
// Note: for each time of a display item, if we register one of `clip_ids` or `spatial_ids`,
// we also register the other one as inherited from the current state or the stack.
// This is not an ideal behavior, but it is compatible with the old WebRender model
// of the clip-scroll tree.
let clip_and_scroll_indices = self.base().clipping_and_scrolling;
let scrolling_id = get_id(clip_ids, clip_and_scroll_indices.scrolling);
let clip_and_scroll_info = match clip_and_scroll_indices.clipping {
None => ClipAndScrollInfo::simple(scrolling_id),
Some(index) => ClipAndScrollInfo::new(scrolling_id, get_id(clip_ids, index)),
};
trace!("converting {:?}", clip_and_scroll_indices);
if clip_and_scroll_info != *current_clip_and_scroll_info {
builder.pop_clip_id();
builder.push_clip_and_scroll_info(clip_and_scroll_info);
*current_clip_and_scroll_info = clip_and_scroll_info;
let cur_spatial_id = state.spatial_ids[clip_and_scroll_indices.scrolling.to_index()]
.expect("Tried to use WebRender SpatialId before it was defined.");
if cur_spatial_id != state.active_spatial_id {
state.active_spatial_id = cur_spatial_id;
}
let internal_clip_id = clip_and_scroll_indices
.clipping
.unwrap_or(clip_and_scroll_indices.scrolling);
let cur_clip_id = state.clip_ids[internal_clip_id.to_index()]
.expect("Tried to use WebRender ClipId before it was defined.");
if cur_clip_id != state.active_clip_id {
state.active_clip_id = cur_clip_id;
}
let space_clip_info = SpaceAndClipInfo {
spatial_id: state.active_spatial_id,
clip_id: state.active_clip_id,
};
match *self {
DisplayItem::Rectangle(ref item) => {
builder.push_item(
&SpecificDisplayItem::Rectangle(item.item),
&self.prim_info(),
&space_clip_info,
);
},
DisplayItem::Text(ref item) => {
builder.push_item(&SpecificDisplayItem::Text(item.item), &self.prim_info());
builder.push_item(
&SpecificDisplayItem::Text(item.item),
&self.prim_info(),
&space_clip_info,
);
builder.push_iter(item.data.iter());
},
DisplayItem::Image(ref item) => {
builder.push_item(&SpecificDisplayItem::Image(item.item), &self.prim_info());
builder.push_item(
&SpecificDisplayItem::Image(item.item),
&self.prim_info(),
&space_clip_info,
);
},
DisplayItem::Border(ref item) => {
if !item.data.is_empty() {
builder.push_stops(item.data.as_ref());
}
builder.push_item(&SpecificDisplayItem::Border(item.item), &self.prim_info());
builder.push_item(
&SpecificDisplayItem::Border(item.item),
&self.prim_info(),
&space_clip_info,
);
},
DisplayItem::Gradient(ref item) => {
builder.push_stops(item.data.as_ref());
builder.push_item(&SpecificDisplayItem::Gradient(item.item), &self.prim_info());
builder.push_item(
&SpecificDisplayItem::Gradient(item.item),
&self.prim_info(),
&space_clip_info,
);
},
DisplayItem::RadialGradient(ref item) => {
builder.push_stops(item.data.as_ref());
builder.push_item(
&SpecificDisplayItem::RadialGradient(item.item),
&self.prim_info(),
&space_clip_info,
);
},
DisplayItem::Line(ref item) => {
builder.push_item(&SpecificDisplayItem::Line(item.item), &self.prim_info());
builder.push_item(
&SpecificDisplayItem::Line(item.item),
&self.prim_info(),
&space_clip_info,
);
},
DisplayItem::BoxShadow(ref item) => {
builder.push_item(
&SpecificDisplayItem::BoxShadow(item.item),
&self.prim_info(),
&space_clip_info,
);
},
DisplayItem::PushTextShadow(ref item) => {
builder.push_shadow(&self.prim_info(), item.shadow);
builder.push_shadow(&self.prim_info(), &space_clip_info, item.shadow);
},
DisplayItem::PopAllTextShadows(_) => {
builder.pop_all_shadows();
},
DisplayItem::Iframe(ref item) => {
builder.push_iframe(&self.prim_info(), item.iframe.to_webrender(), true);
builder.push_iframe(
&self.prim_info(),
&space_clip_info,
item.iframe.to_webrender(),
true,
);
},
DisplayItem::PushStackingContext(ref item) => {
let stacking_context = &item.stacking_context;
debug_assert_eq!(stacking_context.context_type, StackingContextType::Real);
let mut info = webrender_api::LayoutPrimitiveInfo::new(stacking_context.bounds);
if let Some(frame_index) = stacking_context.established_reference_frame {
debug_assert!(
stacking_context.transform.is_some() ||
stacking_context.perspective.is_some()
);
let spatial_id =
if let Some(frame_index) = stacking_context.established_reference_frame {
debug_assert!(
stacking_context.transform.is_some() ||
stacking_context.perspective.is_some()
);
let clip_id = builder.push_reference_frame(
&info.clone(),
stacking_context.transform.map(Into::into),
stacking_context.perspective,
);
clip_ids[frame_index.to_index()] = Some(clip_id);
let spatial_id = builder.push_reference_frame(
&stacking_context.bounds,
state.active_spatial_id,
stacking_context.transform_style,
stacking_context.transform.map(Into::into),
stacking_context.perspective,
);
state.spatial_ids[frame_index.to_index()] = Some(spatial_id);
state.clip_ids[frame_index.to_index()] = Some(cur_clip_id);
info.rect.origin = LayoutPoint::zero();
info.clip_rect.origin = LayoutPoint::zero();
builder.push_clip_id(clip_id);
}
info.rect.origin = LayoutPoint::zero();
info.clip_rect.origin = LayoutPoint::zero();
spatial_id
} else {
state.active_spatial_id
};
builder.push_stacking_context(
&info,
spatial_id,
None,
stacking_context.transform_style,
stacking_context.mix_blend_mode,
&stacking_context.filters,
RasterSpace::Screen,
);
if stacking_context.established_reference_frame.is_some() {
builder.pop_clip_id();
}
},
DisplayItem::PopStackingContext(_) => builder.pop_stacking_context(),
DisplayItem::DefineClipScrollNode(ref item) => {
let node = &clip_scroll_nodes[item.node_index.to_index()];
let parent_id = get_id(clip_ids, node.parent_index);
let item_rect = node.clip.main;
let webrender_id = match node.node_type {
ClipScrollNodeType::Clip => builder.define_clip_with_parent(
parent_id,
item_rect,
node.clip.complex.clone(),
None,
),
ClipScrollNodeType::ScrollFrame(scroll_sensitivity, external_id) => builder
.define_scroll_frame_with_parent(
parent_id,
let parent_spatial_id = state.spatial_ids[node.parent_index.to_index()]
.expect("Tried to use WebRender parent SpatialId before it was defined.");
let parent_clip_id = state.clip_ids[node.parent_index.to_index()]
.expect("Tried to use WebRender parent ClipId before it was defined.");
match node.node_type {
ClipScrollNodeType::Clip => {
let id = builder.define_clip(
&SpaceAndClipInfo {
clip_id: parent_clip_id,
spatial_id: parent_spatial_id,
},
item_rect,
node.clip.complex.clone(),
None,
);
state.spatial_ids[item.node_index.to_index()] = Some(parent_spatial_id);
state.clip_ids[item.node_index.to_index()] = Some(id);
},
ClipScrollNodeType::ScrollFrame(scroll_sensitivity, external_id) => {
let space_clip_info = builder.define_scroll_frame(
&SpaceAndClipInfo {
clip_id: parent_clip_id,
spatial_id: parent_spatial_id,
},
Some(external_id),
node.content_rect,
node.clip.main,
node.clip.complex.clone(),
None,
scroll_sensitivity,
),
);
state.clip_ids[item.node_index.to_index()] = Some(space_clip_info.clip_id);
state.spatial_ids[item.node_index.to_index()] =
Some(space_clip_info.spatial_id);
},
ClipScrollNodeType::StickyFrame(ref sticky_data) => {
// TODO: Add define_sticky_frame_with_parent to WebRender.
builder.push_clip_id(parent_id);
let id = builder.define_sticky_frame(
parent_spatial_id,
item_rect,
sticky_data.margins,
sticky_data.vertical_offset_bounds,
sticky_data.horizontal_offset_bounds,
webrender_api::LayoutVector2D::zero(),
);
builder.pop_clip_id();
id
state.spatial_ids[item.node_index.to_index()] = Some(id);
state.clip_ids[item.node_index.to_index()] = Some(parent_clip_id);
},
ClipScrollNodeType::Placeholder => {
unreachable!("Found DefineClipScrollNode for Placeholder type node.");
},
};
clip_ids[item.node_index.to_index()] = Some(webrender_id);
},
}
}