mirror of
https://github.com/servo/servo.git
synced 2025-08-02 20:20:14 +01:00
Deal with changes to the WebRender API
The WebRender display list is now similar to the Servo display list, which simplifies the conversion.
This commit is contained in:
Martin Robinson
parent
65dd6d4340
commit
e164e87e98
4 changed files with 115 additions and 241 deletions
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@ -10,46 +10,20 @@
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use app_units::Au;
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use euclid::{Matrix4D, Point2D, Rect, Size2D, TypedRect};
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use gfx::display_list::{BorderRadii, BoxShadowClipMode, ClippingRegion};
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use gfx::display_list::{DisplayItem, DisplayList, DisplayListTraversal};
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use gfx::display_list::{StackingContext, StackingContextType};
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use gfx::display_list::{DisplayItem, DisplayList, DisplayListTraversal, StackingContextType};
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use gfx_traits::{FragmentType, ScrollPolicy, StackingContextId, ScrollRootId};
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use style::computed_values::{image_rendering, mix_blend_mode};
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use style::computed_values::filter::{self, Filter};
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use style::values::computed::BorderStyle;
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use webrender_traits::{self, AuxiliaryListsBuilder, DisplayListId, PipelineId};
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trait WebRenderStackingContextConverter {
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fn convert_to_webrender<'a>(&self,
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traversal: &mut DisplayListTraversal<'a>,
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api: &mut webrender_traits::RenderApi,
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pipeline_id: webrender_traits::PipelineId,
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epoch: webrender_traits::Epoch,
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frame_builder: &mut WebRenderFrameBuilder,
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scroll_layer_id: Option<webrender_traits::ScrollLayerId>)
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-> webrender_traits::StackingContextId;
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fn convert_children_to_webrender<'a>(&self,
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traversal: &mut DisplayListTraversal<'a>,
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api: &mut webrender_traits::RenderApi,
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pipeline_id: webrender_traits::PipelineId,
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epoch: webrender_traits::Epoch,
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builder: &mut webrender_traits::DisplayListBuilder,
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frame_builder: &mut WebRenderFrameBuilder,
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force_positioned_stacking_level: bool);
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}
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use webrender_traits::{self, AuxiliaryListsBuilder, BuiltDisplayList, DisplayListBuilder, PipelineId};
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pub trait WebRenderDisplayListConverter {
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fn convert_to_webrender(&self,
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api: &mut webrender_traits::RenderApi,
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pipeline_id: webrender_traits::PipelineId,
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epoch: webrender_traits::Epoch,
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frame_builder: &mut WebRenderFrameBuilder)
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-> webrender_traits::StackingContextId;
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fn convert_to_webrender(&self, frame_builder: &mut WebRenderFrameBuilder) -> BuiltDisplayList;
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}
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trait WebRenderDisplayItemConverter {
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fn convert_to_webrender(&self,
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builder: &mut webrender_traits::DisplayListBuilder,
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builder: &mut DisplayListBuilder,
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frame_builder: &mut WebRenderFrameBuilder);
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}
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@ -73,7 +47,6 @@ impl ToBorderStyle for BorderStyle {
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}
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}
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}
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trait ToBoxShadowClipMode {
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fn to_clip_mode(&self) -> webrender_traits::BoxShadowClipMode;
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}
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@ -222,128 +195,20 @@ impl ToFilterOps for filter::T {
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}
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}
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impl WebRenderStackingContextConverter for StackingContext {
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fn convert_children_to_webrender<'a>(&self,
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traversal: &mut DisplayListTraversal<'a>,
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api: &mut webrender_traits::RenderApi,
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pipeline_id: webrender_traits::PipelineId,
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epoch: webrender_traits::Epoch,
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builder: &mut webrender_traits::DisplayListBuilder,
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frame_builder: &mut WebRenderFrameBuilder,
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_force_positioned_stacking_level: bool) {
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while let Some(item) = traversal.next() {
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match item {
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&DisplayItem::PushStackingContext(ref stacking_context_item) => {
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let stacking_context = &stacking_context_item.stacking_context;
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debug_assert!(stacking_context.context_type == StackingContextType::Real);
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builder.push_stacking_context(
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stacking_context.convert_to_webrender(traversal,
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api,
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pipeline_id,
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epoch,
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frame_builder,
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None));
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}
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&DisplayItem::PushScrollRoot(ref item) => {
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let stacking_context = StackingContext::new(
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StackingContextId::new(0),
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StackingContextType::Real,
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&item.scroll_root.clip,
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&TypedRect::new(Point2D::zero(), item.scroll_root.size),
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0,
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filter::T::new(Vec::new()),
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mix_blend_mode::T::normal,
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Matrix4D::identity(),
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Matrix4D::identity(),
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true,
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ScrollPolicy::Scrollable,
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ScrollRootId::root());
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let scroll_layer_id =
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Some(frame_builder.next_scroll_layer_id(item.scroll_root.id));
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builder.push_stacking_context(
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stacking_context.convert_to_webrender(traversal,
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api,
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pipeline_id,
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epoch,
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frame_builder,
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scroll_layer_id));
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}
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&DisplayItem::PopStackingContext(_) | &DisplayItem::PopScrollRoot(_) => return,
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_ => item.convert_to_webrender(builder, frame_builder),
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}
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}
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}
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fn convert_to_webrender<'a>(&self,
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traversal: &mut DisplayListTraversal<'a>,
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api: &mut webrender_traits::RenderApi,
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pipeline_id: webrender_traits::PipelineId,
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epoch: webrender_traits::Epoch,
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frame_builder: &mut WebRenderFrameBuilder,
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scroll_layer_id: Option<webrender_traits::ScrollLayerId>)
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-> webrender_traits::StackingContextId {
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let webrender_scroll_policy = match self.scroll_policy {
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ScrollPolicy::Scrollable => webrender_traits::ScrollPolicy::Scrollable,
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ScrollPolicy::FixedPosition => webrender_traits::ScrollPolicy::Fixed,
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};
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let mut sc =
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webrender_traits::StackingContext::new(scroll_layer_id,
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webrender_scroll_policy,
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self.bounds.to_rectf(),
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self.overflow.to_rectf(),
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self.z_index,
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&self.transform,
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&self.perspective,
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self.establishes_3d_context,
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self.blend_mode.to_blend_mode(),
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self.filters.to_filter_ops(),
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&mut frame_builder.auxiliary_lists_builder);
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let mut builder = webrender_traits::DisplayListBuilder::new();
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self.convert_children_to_webrender(traversal,
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api,
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pipeline_id,
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epoch,
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&mut builder,
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frame_builder,
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false);
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frame_builder.add_display_list(api, builder.finalize(), &mut sc);
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frame_builder.add_stacking_context(api, pipeline_id, sc)
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}
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}
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impl WebRenderDisplayListConverter for DisplayList {
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fn convert_to_webrender(&self,
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api: &mut webrender_traits::RenderApi,
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pipeline_id: webrender_traits::PipelineId,
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epoch: webrender_traits::Epoch,
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frame_builder: &mut WebRenderFrameBuilder)
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-> webrender_traits::StackingContextId {
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let mut traversal = DisplayListTraversal::new(self);
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let item = traversal.next();
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match item {
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Some(&DisplayItem::PushStackingContext(ref stacking_context_item)) => {
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let stacking_context = &stacking_context_item.stacking_context;
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let scroll_layer_id =
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Some(frame_builder.next_scroll_layer_id(ScrollRootId::root()));
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stacking_context.convert_to_webrender(&mut traversal,
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api,
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pipeline_id,
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epoch,
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frame_builder,
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scroll_layer_id)
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}
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_ => unreachable!("DisplayList did not start with StackingContext."),
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fn convert_to_webrender(&self, frame_builder: &mut WebRenderFrameBuilder) -> BuiltDisplayList {
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let traversal = DisplayListTraversal::new(self);
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let mut builder = DisplayListBuilder::new();
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for item in traversal {
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item.convert_to_webrender(&mut builder, frame_builder);
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}
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builder.finalize()
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}
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}
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impl WebRenderDisplayItemConverter for DisplayItem {
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fn convert_to_webrender(&self,
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builder: &mut webrender_traits::DisplayListBuilder,
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builder: &mut DisplayListBuilder,
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frame_builder: &mut WebRenderFrameBuilder) {
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match *self {
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DisplayItem::SolidColor(ref item) => {
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@ -472,19 +337,60 @@ impl WebRenderDisplayItemConverter for DisplayItem {
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item.base.clip.to_clip_region(frame_builder),
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pipeline_id);
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}
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DisplayItem::PushStackingContext(_) |
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DisplayItem::PopStackingContext(_) |
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DisplayItem::PushScrollRoot(_) |
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DisplayItem::PopScrollRoot(_) =>
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unreachable!("Tried to convert a scroll root or stacking context structure item."),
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DisplayItem::PushStackingContext(ref item) => {
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let stacking_context = &item.stacking_context;
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debug_assert!(stacking_context.context_type == StackingContextType::Real);
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let webrender_scroll_policy = match stacking_context.scroll_policy {
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ScrollPolicy::Scrollable => webrender_traits::ScrollPolicy::Scrollable,
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ScrollPolicy::FixedPosition => webrender_traits::ScrollPolicy::Fixed,
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};
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let scroll_layer_id = if stacking_context.id == StackingContextId::root() {
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Some(frame_builder.next_scroll_layer_id(ScrollRootId::root()))
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} else {
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None
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};
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let context =
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webrender_traits::StackingContext::new(
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scroll_layer_id,
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webrender_scroll_policy,
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stacking_context.bounds.to_rectf(),
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stacking_context.overflow.to_rectf(),
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stacking_context.z_index,
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&stacking_context.transform,
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&stacking_context.perspective,
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stacking_context.establishes_3d_context,
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stacking_context.blend_mode.to_blend_mode(),
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stacking_context.filters.to_filter_ops(),
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&mut frame_builder.auxiliary_lists_builder);
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builder.push_stacking_context(context);
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}
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DisplayItem::PopStackingContext(_) => builder.pop_stacking_context(),
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DisplayItem::PushScrollRoot(ref item) => {
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let overflow = TypedRect::new(Point2D::zero(), item.scroll_root.size);
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let context = webrender_traits::StackingContext::new(
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Some(frame_builder.next_scroll_layer_id(item.scroll_root.id)),
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webrender_traits::ScrollPolicy::Scrollable,
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item.scroll_root.clip.to_rectf(),
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overflow.to_rectf(),
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0,
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&Matrix4D::identity(),
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&Matrix4D::identity(),
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true,
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mix_blend_mode::T::normal.to_blend_mode(),
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filter::T::new(Vec::new()).to_filter_ops(),
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&mut frame_builder.auxiliary_lists_builder);
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builder.push_stacking_context(context);
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}
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DisplayItem::PopScrollRoot(_) => builder.pop_stacking_context(),
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}
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}
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}
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pub struct WebRenderFrameBuilder {
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pub stacking_contexts: Vec<(webrender_traits::StackingContextId,
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webrender_traits::StackingContext)>,
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pub display_lists: Vec<(DisplayListId, webrender_traits::BuiltDisplayList)>,
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pub auxiliary_lists_builder: AuxiliaryListsBuilder,
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pub root_pipeline_id: PipelineId,
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pub next_scroll_layer_id: usize,
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@ -493,36 +399,12 @@ pub struct WebRenderFrameBuilder {
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impl WebRenderFrameBuilder {
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pub fn new(root_pipeline_id: PipelineId) -> WebRenderFrameBuilder {
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WebRenderFrameBuilder {
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stacking_contexts: vec![],
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display_lists: vec![],
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auxiliary_lists_builder: AuxiliaryListsBuilder::new(),
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root_pipeline_id: root_pipeline_id,
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next_scroll_layer_id: 0,
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}
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}
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pub fn add_stacking_context(&mut self,
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api: &mut webrender_traits::RenderApi,
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pipeline_id: PipelineId,
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stacking_context: webrender_traits::StackingContext)
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-> webrender_traits::StackingContextId {
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assert!(pipeline_id == self.root_pipeline_id);
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let id = api.next_stacking_context_id();
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self.stacking_contexts.push((id, stacking_context));
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id
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}
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pub fn add_display_list(&mut self,
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api: &mut webrender_traits::RenderApi,
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display_list: webrender_traits::BuiltDisplayList,
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stacking_context: &mut webrender_traits::StackingContext)
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-> DisplayListId {
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let id = api.next_display_list_id();
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stacking_context.display_lists.push(id);
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self.display_lists.push((id, display_list));
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id
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}
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pub fn next_scroll_layer_id(&mut self,
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scroll_root_id: ScrollRootId)
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-> webrender_traits::ScrollLayerId {
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