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Instead of exposing many different kinds of messages to the compositor that are routed through the constellation, expose a single message type which can be sent across IPC channels. In addition, this IPC channel and the route to the crossbeam channel with the compositor is created along with the `CompositorProxy`, simplifying what needs to be passed around during pipeline initialization. Previously, some image updates (from video) were sent over IPC with a special serialization routine and some were sent via crossbeam channels (canvas). Now all updates go over the IPC channel `IpcSharedMemory` is used to avoid serialization penalties. This should improve performance and reduce copies for video, but add a memory copy overhead for canvas. This will improve in the future when canvas renders directly into a texture. All-in-all this is a simplification which opens the path toward having a standard compositor API and reduces the number of duplicate messages and proxying that had to happen in libservo. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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@ -58,7 +58,9 @@ use style_traits::{CSSPixel, SpeculativePainter};
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use webgpu::WebGPUMsg;
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use webrender_api::units::{DeviceIntSize, DevicePixel, LayoutPixel};
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use webrender_api::{DocumentId, ExternalScrollId, ImageKey};
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use webrender_traits::{UntrustedNodeAddress as WebRenderUntrustedNodeAddress, WebRenderScriptApi};
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use webrender_traits::{
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CrossProcessCompositorApi, UntrustedNodeAddress as WebRenderUntrustedNodeAddress,
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};
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pub use crate::script_msg::{
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DOMMessage, EventResult, HistoryEntryReplacement, IFrameSizeMsg, Job, JobError, JobResult,
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@ -659,8 +661,8 @@ pub struct InitialScriptState {
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pub webxr_registry: webxr_api::Registry,
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/// The Webrender document ID associated with this thread.
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pub webrender_document: DocumentId,
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/// FIXME(victor): The Webrender API sender in this constellation's pipeline
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pub webrender_api_sender: WebRenderScriptApi,
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/// Access to the compositor across a process boundary.
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pub compositor_api: CrossProcessCompositorApi,
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/// Application window's GL Context for Media player
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pub player_context: WindowGLContext,
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}
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