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>
27 #include <dali/internal/update/modeling/scene-graph-mesh-declarations.h>
45 * DiscardQueue is used to cleanup nodes & resources when no longer in use.
46 * Unwanted objects are added here during UpdateManager::Update().
47 * When added, messages will be sent to clean-up GL resources in the next Render.
48 * The Update for frame N+1 may occur in parallel with the rendering of frame N.
49 * Therefore objects queued for destruction in frame N, are destroyed frame N+2.
55 typedef OwnerContainer< Shader* > ShaderQueue;
58 * Create a new DiscardQueue.
59 * @param[in] renderQueue Used to send GL clean-up messages for the next Render.
61 DiscardQueue( RenderQueue& renderQueue );
64 * Non-virtual destructor; DiscardQueue is not suitable as a base class.
69 * Adds an unwanted Node and its children to the discard queue.
70 * If necessary, a message will be sent to clean-up GL resources in the next Render.
71 * @pre This method is not thread-safe, and should only be called from the update-thread.
72 * @param[in] updateBufferIndex The current update buffer index.
73 * @param[in] node The discarded node; DiscardQueue takes ownership.
75 void Add( BufferIndex updateBufferIndex, Node* node );
78 * Adds an unwanted NodeAttachment to the discard queue.
79 * If necessary, a message will be sent to clean-up GL resources in the next Render.
80 * @pre This method is not thread-safe, and should only be called from the update-thread.
81 * @param[in] updateBufferIndex The current update buffer index.
82 * @param[in] attachment The discarded attachment; DiscardQueue takes ownership.
84 void Add( BufferIndex updateBufferIndex, NodeAttachment* attachment );
87 * Adds an unwanted mesh resource to the discard queue.
88 * A message will be sent to clean-up GL resources in the next Render.
89 * @pre This method is not thread-safe, and should only be called from the update-thread.
90 * @param[in] updateBufferIndex The current update buffer index.
91 * @param[in] mesh The mesh to queue; DiscardQueue takes a reference.
93 void Add( BufferIndex updateBufferIndex, Mesh* mesh );
96 * Adds an unwanted shader to the discard queue.
97 * A message will be sent to clean-up GL resources in the next Render.
98 * @pre This method is not thread-safe, and should only be called from the update-thread.
99 * @param[in] bufferIndex The current update buffer index.
100 * @param[in] shader The shader to queue; DiscardQueue takes ownership.
102 void Add( BufferIndex bufferIndex, Shader* shader );
105 * Release the nodes which were queued in the frame N-2.
106 * @pre This method should be called (once) at the beginning of every Update.
107 * @param[in] updateBufferIndex The current update buffer index.
109 void Clear( BufferIndex updateBufferIndex );
114 DiscardQueue( const DiscardQueue& );
117 DiscardQueue& operator=( const DiscardQueue& rhs );
121 RenderQueue& mRenderQueue; ///< Used to send GL clean-up messages for the next Render.
123 // Messages are queued here when the update buffer index == 0
124 NodeOwnerContainer mNodeQueue0;
125 NodeAttachmentOwnerContainer mAttachmentQueue0;
126 MeshOwnerContainer mMeshQueue0;
127 ShaderQueue mShaderQueue0;
129 // Messages are queued here when the update buffer index == 1
130 NodeOwnerContainer mNodeQueue1;
131 NodeAttachmentOwnerContainer mAttachmentQueue1;
132 MeshOwnerContainer mMeshQueue1;
133 ShaderQueue mShaderQueue1;
137 } // namespace SceneGraph
139 } // namespace Internal
143 #endif // __DALI_INTERNAL_RESOURCE_DISCARD_QUEUE_H__