cc/texture_layer_client.h

   1 // Copyright 2012 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 #ifndef CC_TEXTURE_LAYER_CLIENT_H_
   6 #define CC_TEXTURE_LAYER_CLIENT_H_
   7
   8 namespace WebKit {
   9 class WebGraphicsContext3D;
  10 }
  11
  12 namespace cc {
  13 class ResourceUpdateQueue;
  14
  15 class TextureLayerClient {
  16 public:
  17     // Called to prepare this layer's texture for compositing. The client may queue a texture
  18     // upload or copy on the ResourceUpdateQueue.
  19     // Returns the texture ID to be used for compositing.
  20     virtual unsigned prepareTexture(ResourceUpdateQueue&) = 0;
  21
  22     // Returns the context that is providing the texture. Used for rate limiting and detecting lost context.
  23     virtual WebKit::WebGraphicsContext3D* context() = 0;
  24
  25 protected:
  26     virtual ~TextureLayerClient() { }
  27 };
  28
  29 }
  30
  31 #endif  // CC_TEXTURE_LAYER_CLIENT_H_