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| 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 | |
| 5 module mojo; | |
| 6 | |
| 7 // A surface ID is composed of two parts, a local part and a namespace. The | |
| 8 // local part is allocated by the client using any scheme that avoids | |
| 9 // duplicates. The namespace is allocated by the service and will be different | |
| 10 // for each client (aka each connection to mojo.Surface). | |
| 11 // | |
| 12 // The special id_namespace value 0 is equivalent to the namespace of the | |
| 13 // client. This can be used to create, destroy and submit frames to | |
| 14 // surfaces before learning the namespace and to reference other surfaces | |
| 15 // owned by the same client. The actual id namespace must be used to pass | |
| 16 // surface ids to other clients for them to reference. | |
| 17 struct SurfaceId { | |
| 18 uint32 local; | |
| 19 uint32 id_namespace; | |
| 20 }; | |
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