1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5module viz.mojom; 6 7import "services/viz/public/mojom/compositing/frame_sink_id.mojom"; 8import "services/viz/public/mojom/compositing/local_surface_id.mojom"; 9 10// A surface ID is composed of two parts: a FrameSinkID, and a LocalSurfaceId. 11// The FrameSinkId uniquely identifies the FrameSink associated with the 12// surface. This corresponds to a SurfaceFactory in the display compositor 13// service. The FrameSinkId is partially allocated by the display compositor 14// and partially allocated by the frame source. 15// The LocalSurfaceId are allocated by the client using any scheme 16// that avoids duplicates and makes IDs unguessable respectively. 17struct SurfaceId { 18 FrameSinkId frame_sink_id; 19 LocalSurfaceId local_surface_id; 20}; 21