src/mojo/services/public/interfaces/gpu/command_buffer.mojom

   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 struct CommandBufferState {
   8   int32 num_entries;
   9   int32 get_offset;
  10   int32 put_offset;
  11   int32 token;
  12   int32 error;  // TODO(piman): enum
  13   int32 context_lost_reason;  // TODO(piman): enum
  14   uint32 generation;
  15 };
  16
  17 interface CommandBufferSyncClient {
  18   DidInitialize(bool success);
  19   DidMakeProgress(CommandBufferState? state);
  20 };
  21
  22 [Client=CommandBufferClient]
  23 interface CommandBuffer {
  24   Initialize(CommandBufferSyncClient? sync_client,
  25              handle<shared_buffer>? shared_state);
  26   SetGetBuffer(int32 buffer);
  27   Flush(int32 put_offset);
  28   MakeProgress(int32 last_get_offset);
  29   RegisterTransferBuffer(
  30       int32 id, handle<shared_buffer>? transfer_buffer, uint32 size);
  31   DestroyTransferBuffer(int32 id);
  32   Echo() => ();
  33
  34   // TODO(piman): sync points
  35 };
  36
  37 interface CommandBufferClient {
  38   DidDestroy();
  39   LostContext(int32 lost_reason);  // TODO(piman): enum
  40 };