1 #ifndef DALI_INTERNAL_RENDER_TASK_H
2 #define DALI_INTERNAL_RENDER_TASK_H
5 * Copyright (c) 2022 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/base-object.h>
23 #include <dali/public-api/object/weak-handle.h>
24 #include <dali/public-api/render-tasks/render-task.h>
26 #include <dali/internal/event/common/object-impl.h>
27 #include <dali/internal/event/events/actor-observer.h>
28 #include <dali/internal/event/rendering/frame-buffer-impl.h>
36 class EventThreadServices;
44 } // namespace SceneGraph
46 using RenderTaskPtr = IntrusivePtr<RenderTask>;
48 class RenderTask : public Object
51 using ScreenToFrameBufferFunction = Dali::RenderTask::ScreenToFrameBufferFunction;
54 * Creates a new RenderTask.
56 * @param[in] sourceActor The source actor.
57 * @param[in] cameraActor The camera actor.
58 * @param[in] renderTaskList The render task list.
59 * @return The created render task
61 static RenderTaskPtr New(Actor* sourceActor, CameraActor* cameraActor, RenderTaskList& renderTaskList);
64 * @copydoc Dali::RenderTask::SetSourceActor()
66 void SetSourceActor(Actor* actor);
69 * @copydoc Dali::RenderTask::GetSourceActor()
71 Actor* GetSourceActor() const;
74 * @copydoc Dali::RenderTask::SetExclusive()
76 void SetExclusive(bool exclusive);
79 * @copydoc Dali::RenderTask::IsExclusive()
81 bool IsExclusive() const;
84 * @copydoc Dali::RenderTask::SetInputEnabled()
86 void SetInputEnabled(bool enabled);
89 * @copydoc Dali::RenderTask::GetInputEnabled()
91 bool GetInputEnabled() const;
94 * @copydoc Dali::RenderTask::SetCameraActor()
96 void SetCameraActor(CameraActor* cameraActor);
99 * @copydoc Dali::RenderTask::GetCameraActor()
101 CameraActor* GetCameraActor() const;
104 * @copydoc Dali::RenderTask::SetFrameBuffer()
106 void SetFrameBuffer(FrameBufferPtr frameBuffer);
109 * @copydoc Dali::RenderTask::GetFrameBuffer
111 FrameBuffer* GetFrameBuffer() const;
114 * @copydoc Dali::RenderTask::SetScreenToFrameBufferFunction
116 void SetScreenToFrameBufferFunction(ScreenToFrameBufferFunction conversionFunction);
119 * @copydoc Dali::RenderTask::GetScreenToFrameBufferFunction
121 ScreenToFrameBufferFunction GetScreenToFrameBufferFunction() const;
124 * @copydoc Dali::RenderTask::SetScreenToFrameBufferMappingActor
126 void SetScreenToFrameBufferMappingActor(Dali::Actor& mappingActor);
129 * @copydoc Dali::RenderTask::GetScreenToFrameBufferMAppingActor
131 Dali::Actor GetScreenToFrameBufferMappingActor() const;
134 * @copydoc Dali::RenderTask::SetViewportGuideActor
136 void SetViewportGuideActor(Actor* actor);
139 * @copydoc Dali::RenderTask::GetViewportGuideActor
141 Actor* GetViewportGuideActor() const;
144 * @copydoc Dali::RenderTask::ResetViewportGuideActor
146 void ResetViewportGuideActor();
149 * @copydoc Dali::RenderTask::SetViewportPosition
151 void SetViewportPosition(const Vector2& value);
154 * @copydoc Dali::RenderTask::GetCurrentViewportPosition
156 Vector2 GetCurrentViewportPosition() const;
159 * @copydoc Dali::RenderTask::SetViewportSize
161 void SetViewportSize(const Vector2& value);
164 * @copydoc Dali::RenderTask::GetCurrentViewportSize
166 Vector2 GetCurrentViewportSize() const;
169 * @copydoc Dali::RenderTask::SetViewport()
171 void SetViewport(const Viewport& viewport);
174 * @param[out] viewPort instance to copy the values into
176 void GetViewport(Viewport& viewPort) const;
179 * @copydoc Dali::RenderTask::SetClearColor()
181 void SetClearColor(const Vector4& color);
184 * @copydoc Dali::RenderTask::GetClearColor()
186 const Vector4& GetClearColor() const;
189 * Indicate whether GL sync is required for native render target.
190 * @param[in] requiresSync whether GL sync is required.
192 void SetSyncRequired(bool requiresSync);
195 * Query whether the sync object is required for native render target.
196 * @return True if the sync object is required, false otherwise.
198 bool IsSyncRequired() const;
201 * @copydoc Dali::RenderTask::SetClearEnabled()
203 void SetClearEnabled(bool enabled);
206 * @copydoc Dali::RenderTask::GetClearEnabled()
208 bool GetClearEnabled() const;
211 * @copydoc Dali::RenderTask::SetCullMode()
213 void SetCullMode(bool mode);
216 * @copydoc Dali::RenderTask::GetCullMode()
218 bool GetCullMode() const;
221 * @copydoc Dali::RenderTask::SetRefreshRate()
223 void SetRefreshRate(uint32_t refreshRate);
226 * @copydoc Dali::RenderTask::GetRefreshRate()
228 uint32_t GetRefreshRate() const;
231 * Check if the render-task is hittable. If render task is offscreen, the screen coordinates may be translated.
232 * @param[in,out] screenCoords The screen coordinate, which may be converted (for hit-testing actors which are rendered off-screen).
233 * @return True the render-task can be used for input-handling; otherwise the output parameters are not valid.
235 bool IsHittable(Vector2& screenCoords) const;
238 * Translates screen coordinates to render task coordinates for offscreen render tasks
239 * @param[in,out] screenCoords The screen coordinates, which may be converted (for off-screen).
240 * @return false if the conversion function decides the coordinates are not inside. returns true if there is no conversion function
242 bool TranslateCoordinates(Vector2& screenCoords) const;
245 * @copydoc Dali::RenderTask::WorldToViewport()
247 bool WorldToViewport(const Vector3& position, float& viewportX, float& viewportY) const;
250 * @copydoc Dali::RenderTask::ViewportToLocal()
252 bool ViewportToLocal(Actor* actor, float viewportX, float viewportY, float& localX, float& localY) const;
254 public: // Used by RenderTaskList, which owns the SceneGraph::RenderTasks
256 * Retrieve the scene-graph RenderTask object.
257 * @return The scene-graph object
259 const SceneGraph::RenderTask& GetRenderTaskSceneObject() const;
262 * Retrieve the render task list RenderTask object belongs to.
263 * @return The render task list
265 RenderTaskList& GetRenderTaskList() const;
267 public: // Implementation of Object
269 * @copydoc Dali::Internal::Object::SetDefaultProperty()
271 void SetDefaultProperty(Property::Index index, const Property::Value& propertyValue) override;
274 * @copydoc Dali::Internal::Object::GetDefaultProperty()
276 Property::Value GetDefaultProperty(Property::Index index) const override;
279 * @copydoc Dali::Internal::Object::GetDefaultPropertyCurrentValue()
281 Property::Value GetDefaultPropertyCurrentValue(Property::Index index) const override;
284 * @copydoc Dali::Internal::Object::OnNotifyDefaultPropertyAnimation()
286 void OnNotifyDefaultPropertyAnimation(Animation& animation, Property::Index index, const Property::Value& value, Animation::Type animationType) override;
289 * @copydoc Dali::Internal::Object::GetSceneObjectAnimatableProperty()
291 const SceneGraph::PropertyBase* GetSceneObjectAnimatableProperty(Property::Index index) const override;
294 * @copydoc Dali::Internal::Object::GetSceneObjectInputProperty()
296 const PropertyInputImpl* GetSceneObjectInputProperty(Property::Index index) const override;
300 * Query whether a Finished signal should be emitted for this render-task.
301 * This should only be called by NotificationManager, before signals are emitted.
302 * @pre The refresh rate must be REFRESH_ONCE.
303 * @post HasFinished() will return false on subsequent calls, until the render-task is processed again.
304 * @return \e true if the refresh once render task has finished. Otherwise it returns \e false.
309 * Emit the Finished signal
311 void EmitSignalFinish();
314 * @copydoc Dali::RenderTask::FinishedSignal()
316 Dali::RenderTask::RenderTaskSignalType& FinishedSignal();
319 * Connects a callback function with the object's signals.
320 * @param[in] object The object providing the signal.
321 * @param[in] tracker Used to disconnect the signal.
322 * @param[in] signalName The signal to connect to.
323 * @param[in] functor A newly allocated FunctorDelegate.
324 * @return True if the signal was connected.
325 * @post If a signal was connected, ownership of functor was passed to CallbackBase. Otherwise the caller is responsible for deleting the unused functor.
327 static bool DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor);
333 * @param[in] sceneObject The scene graph object
334 * @param[in] renderTaskList The render task list
336 RenderTask(const SceneGraph::RenderTask* sceneObject, RenderTaskList& renderTaskList);
339 * A reference counted object may only be deleted by calling Unreference()
341 ~RenderTask() override;
343 private: // not copyable
344 RenderTask() = delete;
345 RenderTask(const RenderTask&) = delete;
346 RenderTask& operator=(const RenderTask&) = delete;
349 ActorObserver mSourceActor; ///< Source actor
350 ActorObserver mCameraActor; ///< Camera actor
351 ActorObserver mViewportGuideActor; ///< Actor to matching viewport of this render task to this Actor.
352 WeakHandle<Dali::Actor> mInputMappingActor; /// used to mapping screen to frame buffer coordinate, not kept alive by rendertask
353 RenderTaskList& mRenderTaskList; ///< The render task list
355 Vector4 mClearColor; ///< Optional clear color
357 Vector2 mViewportPosition; ///< The cached viewport position
358 Vector2 mViewportSize; ///< The cached viewport size
360 uint32_t mRefreshRate; ///< Determines how often the task is processed.
362 uint32_t mRefreshOnceCounter;
364 FrameBufferPtr mFrameBuffer;
366 Dali::RenderTask::ScreenToFrameBufferFunction mScreenToFrameBufferFunction; ///< Used to convert screen to frame-buffer coordinates
368 bool mExclusive : 1; ///< True if the render-task has exclusive access to the source Nodes.
369 bool mInputEnabled : 1; ///< True if the render-task should be considered for input handling.
370 bool mClearEnabled : 1; ///< True if the render-task should be clear the color buffer.
371 bool mCullMode : 1; ///< True if the render-task's actors should be culled
372 bool mRequiresSync : 1; ///< True if the GL sync is required to track the render of.
375 Dali::RenderTask::RenderTaskSignalType mSignalFinished; ///< Signal emmited when the render task has been processed.
378 } // namespace Internal
380 // Helpers for public-api forwarding methods
382 inline Internal::RenderTask& GetImplementation(Dali::RenderTask& task)
384 DALI_ASSERT_ALWAYS(task && "RenderTask handle is empty");
386 BaseObject& handle = task.GetBaseObject();
388 return static_cast<Internal::RenderTask&>(handle);
391 inline const Internal::RenderTask& GetImplementation(const Dali::RenderTask& task)
393 DALI_ASSERT_ALWAYS(task && "RenderTask handle is empty");
395 const BaseObject& handle = task.GetBaseObject();
397 return static_cast<const Internal::RenderTask&>(handle);
402 #endif // DALI_INTERNAL_RENDER_TASK_H