1 #ifndef __DALI_INTERNAL_DISCARD_QUEUE_H__
2 #define __DALI_INTERNAL_DISCARD_QUEUE_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/object/ref-object.h>
23 #include <dali/internal/common/buffer-index.h>
24 #include <dali/internal/common/owner-container.h>
25 #include <dali/internal/update/nodes/node-declarations.h>
26 #include <dali/internal/update/node-attachments/node-attachment-declarations.h>
44 * DiscardQueue is used to cleanup nodes & resources when no longer in use.
45 * Unwanted objects are added here during UpdateManager::Update().
46 * When added, messages will be sent to clean-up GL resources in the next Render.
47 * The Update for frame N+1 may occur in parallel with the rendering of frame N.
48 * Therefore objects queued for destruction in frame N, are destroyed frame N+2.
54 typedef OwnerContainer< Shader* > ShaderQueue;
57 * Create a new DiscardQueue.
58 * @param[in] renderQueue Used to send GL clean-up messages for the next Render.
60 DiscardQueue( RenderQueue& renderQueue );
63 * Non-virtual destructor; DiscardQueue is not suitable as a base class.
68 * Adds an unwanted Node and its children to the discard queue.
69 * If necessary, a message will be sent to clean-up GL resources in the next Render.
70 * @pre This method is not thread-safe, and should only be called from the update-thread.
71 * @param[in] updateBufferIndex The current update buffer index.
72 * @param[in] node The discarded node; DiscardQueue takes ownership.
74 void Add( BufferIndex updateBufferIndex, Node* node );
77 * Adds an unwanted NodeAttachment to the discard queue.
78 * If necessary, a message will be sent to clean-up GL resources in the next Render.
79 * @pre This method is not thread-safe, and should only be called from the update-thread.
80 * @param[in] updateBufferIndex The current update buffer index.
81 * @param[in] attachment The discarded attachment; DiscardQueue takes ownership.
83 void Add( BufferIndex updateBufferIndex, NodeAttachment* attachment );
86 * Adds an unwanted shader to the discard queue.
87 * A message will be sent to clean-up GL resources in the next Render.
88 * @pre This method is not thread-safe, and should only be called from the update-thread.
89 * @param[in] bufferIndex The current update buffer index.
90 * @param[in] shader The shader to queue; DiscardQueue takes ownership.
92 void Add( BufferIndex bufferIndex, Shader* shader );
95 * Release the nodes which were queued in the frame N-2.
96 * @pre This method should be called (once) at the beginning of every Update.
97 * @param[in] updateBufferIndex The current update buffer index.
99 void Clear( BufferIndex updateBufferIndex );
104 DiscardQueue( const DiscardQueue& );
107 DiscardQueue& operator=( const DiscardQueue& rhs );
111 RenderQueue& mRenderQueue; ///< Used to send GL clean-up messages for the next Render.
113 // Messages are queued here when the update buffer index == 0
114 NodeOwnerContainer mNodeQueue0;
115 NodeAttachmentOwnerContainer mAttachmentQueue0;
116 ShaderQueue mShaderQueue0;
118 // Messages are queued here when the update buffer index == 1
119 NodeOwnerContainer mNodeQueue1;
120 NodeAttachmentOwnerContainer mAttachmentQueue1;
121 ShaderQueue mShaderQueue1;
124 } // namespace SceneGraph
126 } // namespace Internal
130 #endif // __DALI_INTERNAL_RESOURCE_DISCARD_QUEUE_H__