1 #ifndef DALI_INTERNAL_SCENE_GRAPH_RENDER_TASK_H
2 #define DALI_INTERNAL_SCENE_GRAPH_RENDER_TASK_H
5 * Copyright (c) 2023 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/internal/render/common/render-instruction.h>
23 #include <dali/internal/render/renderers/render-frame-buffer.h>
24 #include <dali/internal/update/common/animatable-property.h>
25 #include <dali/internal/update/common/property-owner.h>
26 #include <dali/public-api/math/viewport.h>
27 #include <dali/public-api/render-tasks/render-task.h>
42 class RenderInstruction;
43 class RenderMessageDispatcher;
44 class ResetterManager;
47 * RenderTasks describe how the Dali scene should be rendered.
49 class RenderTask : public PropertyOwner, public PropertyOwner::Observer
54 RENDER_CONTINUOUSLY, ///< mRefreshRate > 0
55 RENDER_ONCE_WAITING_FOR_RESOURCES, ///< mRefreshRate = REFRESH_ONCE
56 RENDERED_ONCE, ///< mRefreshRate = REFRESH_ONCE & rendered
57 RENDERED_ONCE_AND_NOTIFIED ///< mRefreshRate = REFRESH_ONCE & rendered & notified
61 * Create a new RenderTask
63 static RenderTask* New();
68 ~RenderTask() override;
71 * Initialize the render task. Called in update thread
72 * @param[in] resetterManager to send resetter
73 * @param[in] renderMessageDispatcher to send messages to render thread
75 void Initialize(ResetterManager& resetterManager, RenderMessageDispatcher& renderMessageDispatcher);
78 * Set the nodes to be rendered.
79 * @param[in] node This node and its children will be rendered.
81 void SetSourceNode(Node* node);
84 * Retrieve the source node.
85 * @return This node and its children will be rendered.
87 Node* GetSourceNode() const;
90 * Set the ViewportGuideNode.
91 * @param[in] node This node is used to compute viewport of the render task.
93 void SetViewportGuideNode(Node* node);
96 * Retrieve the ViewportGuideNode.
97 * @return This node is used to compute viewport of the render task.
99 Node* GetViewportGuideNode() const;
102 * Set whether the RenderTask has exclusive access to the source nodes.
103 * @param[in] exclusive True if the source nodes will only be rendered by this render-task.
105 void SetExclusive(bool exclusive);
108 * Query whether the RenderTask has exclusive access to the source actors.
109 * @return True if the source actors will only be rendered by this render-task.
111 bool IsExclusive() const;
114 * Set the camera from which the scene is viewed.
115 * @param[in] cameraNode that camera is connected with
117 void SetCamera(Camera* cameraNode);
120 * Set the frame-buffer used as a render target.
121 * @param[in] frameBuffer The framebuffer
123 void SetFrameBuffer(Render::FrameBuffer* frameBuffer);
126 * Retrieve the resource ID of the frame-buffer.
127 * @return The resource ID, or zero if not rendering off-screen.
129 Render::FrameBuffer* GetFrameBuffer();
132 * Update viewport by using viewport guide node
133 * @param[in] updateBufferIndex The current update buffer index.
134 * @param[in] sceneSize The size of scene.
135 * @param[in] cameraPosition The position of default camera of the scene.
137 void UpdateViewport(BufferIndex updateBufferIndex, Vector2 sceneSize, Vector3 cameraPosition);
140 * Set the value of property viewportPosition
141 * This value will persist only for the current frame.
142 * @param[in] updateBufferIndex The current update buffer index.
143 * @param[in] value The value of the property
145 void SetViewportPosition(BufferIndex updateBufferIndex, const Vector2& value);
148 * Get the value of property viewportPosition
149 * @warning Should only be called from the Update thread
150 * @param[in] bufferIndex The buffer to read from.
151 * @return the value of the property.
153 const Vector2& GetViewportPosition(BufferIndex bufferIndex) const;
156 * Bake the value of the property viewportPosition
157 * This will also set the base value
158 * @param[in] updateBufferIndex The current update buffer index.
159 * @param[in] value The new value for property.
161 void BakeViewportPosition(BufferIndex updateBufferIndex, const Vector2& value);
164 * Set the value of property viewportSize
165 * This value will persist only for the current frame.
166 * @param[in] updateBufferIndex The current update buffer index.
167 * @param[in] value The value of the property
169 void SetViewportSize(BufferIndex updateBufferIndex, const Vector2& value);
172 * Get the value of property viewportSize
173 * @warning Should only be called from the Update thread
174 * @param[in] bufferIndex The buffer to read from.
175 * @return the value of the property.
177 const Vector2& GetViewportSize(BufferIndex bufferIndex) const;
180 * Bake the value of the property viewportSize
181 * This will also set the base value
182 * @param[in] updateBufferIndex The current update buffer index.
183 * @param[in] value The new value for property.
185 void BakeViewportSize(BufferIndex updateBufferIndex, const Vector2& value);
188 * Get the value of property viewportEnabled
189 * @warning Should only be called from the Update thread
190 * @param[in] bufferIndex The buffer to read from.
191 * @return the value of the property.
193 bool GetViewportEnabled(BufferIndex bufferIndex) const;
196 * Query whether the optional viewport is set.
197 * @param[in] bufferIndex The buffer to read from.
198 * @param[out] viewport The viewport position and size is populated.
199 * @return true if the viewport has been set
201 bool QueryViewport(BufferIndex bufferIndex, Viewport& viewport) const;
204 * Set the value of property clearColor
205 * This value will persist only for the current frame.
206 * @param[in] updateBufferIndex The current update buffer index.
207 * @param[in] value The value of the property
209 void SetClearColor(BufferIndex updateBufferIndex, const Vector4& value);
212 * Get the value of property clearColor
213 * @warning Should only be called from the Update thread
214 * @param[in] bufferIndex The buffer to read from.
215 * @return the value of the property.
217 const Vector4& GetClearColor(BufferIndex bufferIndex) const;
220 * Bake the value of the property clearColor
221 * This will also set the base value
222 * @param[in] updateBufferIndex The current update buffer index.
223 * @param[in] value The new value for property.
225 void BakeClearColor(BufferIndex updateBufferIndex, const Vector4& value);
228 * @copydoc Dali::RenderTask::SetClearEnabled()
230 void SetClearEnabled(bool enabled);
233 * @copydoc Dali::RenderTask::GetClearEnabled()
235 bool GetClearEnabled() const;
238 * @copydoc Dali::RenderTask::SetCullMode()
240 void SetCullMode(bool mode);
243 * @copydoc Dali::RenderTask::GetCullMode()
245 bool GetCullMode() const;
248 * Set the refresh-rate of the RenderTask.
249 * @param[in] refreshRate The new refresh rate.
251 void SetRefreshRate(uint32_t refreshRate);
254 * Retrieve the refresh-rate of the RenderTask.
255 * @return The refresh rate.
257 uint32_t GetRefreshRate() const;
260 * Check if the render task is ready for rendering.
261 * @param[in] updateBufferIndex The current update buffer index.
262 * @return True if the render-task is ready for rendering.
264 bool ReadyToRender(BufferIndex updateBufferIndex);
267 * True if a render is required. If the current state is RENDER_CONTINUOUSLY, then
268 * this returns true if the frame count is zero. If the current state is RENDER_ONCE_WAITING_FOR_RESOURCES, then it always returns true. In all other states, it returns false.
269 * @return true if a render is required
271 bool IsRenderRequired();
274 * Process a frame. This method is called each frame for every ready render task, regardless
275 * of whether it needs to render (so that the frame counter can be updated).
280 * Return true only if currently waiting for the render task to
281 * finish rendering and the update thread should be kept alive.
282 * @return true if waiting to be rendered
284 bool IsWaitingToRender();
287 * Return true when the render task has finished rendering and a notification
288 * needs sending. (Only one notification is sent per render once request)
289 * @return true if notification is required.
294 * @return The number of times we have transited from RENDERED_ONCE to RENDERED_ONCE_AND_NOTIFIED state.
296 uint32_t GetRenderedOnceCounter() const;
299 * Retrieve the view-matrix; this is double buffered for input handling.
300 * @pre GetCameraNode() returns a node with valid Camera.
301 * @param[in] bufferIndex The buffer to read from.
302 * @return The view-matrix.
304 const Matrix& GetViewMatrix(BufferIndex bufferIndex) const;
307 * @brief Retrieve the camera.
308 * @pre GetCameraNode() returns a node with valid Camera.
310 * @return The camera.
312 const SceneGraph::Camera& GetCamera() const;
315 * Retrieve the projection-matrix; this is double buffered for input handling.
316 * @pre GetCameraNode() returns a node with valid Camera.
317 * @param[in] bufferIndex The buffer to read from.
318 * @return The projection-matrix.
320 const Matrix& GetProjectionMatrix(BufferIndex bufferIndex) const;
323 * Prepares the render-instruction buffer to be populated with instructions.
325 * If the render task is a render-once framebuffer backed by a native image,
326 * then this method will ensure that a GL sync object is created to track
327 * when the rendering has finished.
329 * @param[in] updateBufferIndex The current update buffer index.
330 * @return instruction to prepare
332 RenderInstruction& PrepareRenderInstruction(BufferIndex updateBufferIndex);
335 * @return true if the view matrix has been updated during this or last frame
337 bool ViewMatrixUpdated();
340 * Indicate whether GL sync is required for native render target.
341 * @param[in] requiresSync whether GL sync is required for native render target
343 void SetSyncRequired(bool requiresSync);
346 * Retrieve the render instruction.
347 * @param[in] updateBufferIndex The current update buffer index.
348 * @return The render instruction
350 RenderInstruction& GetRenderInstruction(BufferIndex updateBufferIndex)
352 return mRenderInstruction[updateBufferIndex];
355 private: // from PropertyOwner::Observer
357 * @copydoc PropertyOwner::Observer::PropertyOwnerConnected( PropertyOwner& owner )
359 void PropertyOwnerConnected(PropertyOwner& owner) override;
362 * @copydoc PropertyOwner::Observer::PropertyOwnerDisconnected( BufferIndex updateBufferIndex, PropertyOwner& owner )
364 void PropertyOwnerDisconnected(BufferIndex updateBufferIndex, PropertyOwner& owner) override;
367 * @copydoc PropertyOwner::Observer::PropertyOwnerDestroyed( PropertyOwner& owner )
369 void PropertyOwnerDestroyed(PropertyOwner& owner) override;
373 * @copydoc Dali::Internal::SceneGraph::PropertyOwner::AddInitializeResetter
375 void AddInitializeResetter(ResetterManager& manager) const override;
378 void SetActiveStatus();
386 RenderTask(const RenderTask&) = delete;
387 RenderTask& operator=(const RenderTask&) = delete;
389 public: // Animatable Properties
390 AnimatableProperty<Vector2> mViewportPosition; ///< viewportPosition
391 AnimatableProperty<Vector2> mViewportSize; ///< viewportSize
392 AnimatableProperty<Vector4> mClearColor; ///< clearColor
395 ResetterManager* mResetterManager;
396 RenderMessageDispatcher* mRenderMessageDispatcher;
397 Render::RenderTracker* mRenderSyncTracker;
399 SceneGraph::Camera* mCameraNode;
400 Node* mViewportGuideNode;
401 Render::FrameBuffer* mFrameBuffer;
403 RenderInstruction mRenderInstruction[2]; ///< Owned double buffered render instruction. (Double buffered because this owns render commands for the currently drawn frame)
405 uint32_t mRefreshRate; ///< REFRESH_ONCE, REFRESH_ALWAYS or render every N frames
406 uint32_t mFrameCounter; ///< counter for rendering every N frames
407 uint32_t mRenderedOnceCounter; ///< Incremented whenever state changes to RENDERED_ONCE_AND_NOTIFIED
409 State mState; ///< Render state.
411 bool mRequiresSync : 1; ///< Whether sync is needed to track the render
412 bool mActive : 1; ///< True when the task is active, i.e. has valid source and camera
413 bool mWaitingToRender : 1; ///< True when an render once to FBO is waiting
414 bool mNotifyTrigger : 1; ///< True if a render once render task has finished renderering
415 bool mExclusive : 1; ///< Whether the render task has exclusive access to the source actor (node in the scene graph).
416 bool mClearEnabled : 1; ///< Whether previous results are cleared.
417 bool mCullMode : 1; ///< Whether renderers should be frustum culled
420 } // namespace SceneGraph
422 } // namespace Internal
426 #endif // DALI_INTERNAL_SCENE_GRAPH_RENDER_TASK_H