1 #ifndef DALI_INTERNAL_RENDER_TASK_H
2 #define DALI_INTERNAL_RENDER_TASK_H
5 * Copyright (c) 2021 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/render-tasks/render-task-list-impl.h>
29 #include <dali/internal/event/rendering/frame-buffer-impl.h>
37 class EventThreadServices;
45 } // namespace SceneGraph
47 using RenderTaskPtr = IntrusivePtr<RenderTask>;
49 class RenderTask : public Object
52 using ScreenToFrameBufferFunction = Dali::RenderTask::ScreenToFrameBufferFunction;
55 * Creates a new RenderTask.
57 * @param[in] sourceActor The source actor.
58 * @param[in] cameraActor The camera actor.
59 * @param[in] renderTaskList The render task list.
60 * @return The created render task
62 static RenderTaskPtr New(Actor* sourceActor, CameraActor* cameraActor, RenderTaskList& renderTaskList);
65 * @copydoc Dali::RenderTask::SetSourceActor()
67 void SetSourceActor(Actor* actor);
70 * @copydoc Dali::RenderTask::GetSourceActor()
72 Actor* GetSourceActor() const;
75 * @copydoc Dali::RenderTask::SetExclusive()
77 void SetExclusive(bool exclusive);
80 * @copydoc Dali::RenderTask::IsExclusive()
82 bool IsExclusive() const;
85 * @copydoc Dali::RenderTask::SetInputEnabled()
87 void SetInputEnabled(bool enabled);
90 * @copydoc Dali::RenderTask::GetInputEnabled()
92 bool GetInputEnabled() const;
95 * @copydoc Dali::RenderTask::SetCameraActor()
97 void SetCameraActor(CameraActor* cameraActor);
100 * @copydoc Dali::RenderTask::GetCameraActor()
102 CameraActor* GetCameraActor() const;
105 * @copydoc Dali::RenderTask::SetFrameBuffer()
107 void SetFrameBuffer(FrameBufferPtr frameBuffer);
110 * @copydoc Dali::RenderTask::GetFrameBuffer
112 FrameBuffer* GetFrameBuffer() const;
115 * @copydoc Dali::RenderTask::SetScreenToFrameBufferFunction
117 void SetScreenToFrameBufferFunction(ScreenToFrameBufferFunction conversionFunction);
120 * @copydoc Dali::RenderTask::GetScreenToFrameBufferFunction
122 ScreenToFrameBufferFunction GetScreenToFrameBufferFunction() const;
125 * @copydoc Dali::RenderTask::SetScreenToFrameBufferMappingActor
127 void SetScreenToFrameBufferMappingActor(Dali::Actor& mappingActor);
130 * @copydoc Dali::RenderTask::GetScreenToFrameBufferMAppingActor
132 Dali::Actor GetScreenToFrameBufferMappingActor() const;
135 * @copydoc Dali::RenderTask::SetViewportGuideActor
137 void SetViewportGuideActor(Actor* actor);
140 * @copydoc Dali::RenderTask::GetViewportGuideActor
142 Actor* GetViewportGuideActor() const;
145 * @copydoc Dali::RenderTask::ResetViewportGuideActor
147 void ResetViewportGuideActor();
150 * @copydoc Dali::RenderTask::SetViewportPosition
152 void SetViewportPosition(const Vector2& value);
155 * @copydoc Dali::RenderTask::GetCurrentViewportPosition
157 Vector2 GetCurrentViewportPosition() const;
160 * @copydoc Dali::RenderTask::SetViewportSize
162 void SetViewportSize(const Vector2& value);
165 * @copydoc Dali::RenderTask::GetCurrentViewportSize
167 Vector2 GetCurrentViewportSize() const;
170 * @copydoc Dali::RenderTask::SetViewport()
172 void SetViewport(const Viewport& viewport);
175 * @param[out] viewPort instance to copy the values into
177 void GetViewport(Viewport& viewPort) const;
180 * @copydoc Dali::RenderTask::SetClearColor()
182 void SetClearColor(const Vector4& color);
185 * @copydoc Dali::RenderTask::GetClearColor()
187 const Vector4& GetClearColor() const;
190 * Indicate whether GL sync is required for native render target.
191 * @param[in] requiresSync whether GL sync is required.
193 void SetSyncRequired(bool requiresSync);
196 * Query whether the sync object is required for native render target.
197 * @return True if the sync object is required, false otherwise.
199 bool IsSyncRequired() const;
202 * @copydoc Dali::RenderTask::SetClearEnabled()
204 void SetClearEnabled(bool enabled);
207 * @copydoc Dali::RenderTask::GetClearEnabled()
209 bool GetClearEnabled() const;
212 * @copydoc Dali::RenderTask::SetCullMode()
214 void SetCullMode(bool mode);
217 * @copydoc Dali::RenderTask::GetCullMode()
219 bool GetCullMode() const;
222 * @copydoc Dali::RenderTask::SetRefreshRate()
224 void SetRefreshRate(uint32_t refreshRate);
227 * @copydoc Dali::RenderTask::GetRefreshRate()
229 uint32_t GetRefreshRate() const;
232 * Check if the render-task is hittable. If render task is offscreen, the screen coordinates may be translated.
233 * @param[in,out] screenCoords The screen coordinate, which may be converted (for hit-testing actors which are rendered off-screen).
234 * @return True the render-task can be used for input-handling; otherwise the output parameters are not valid.
236 bool IsHittable(Vector2& screenCoords) const;
239 * Translates screen coordinates to render task coordinates for offscreen render tasks
240 * @param[in,out] screenCoords The screen coordinates, which may be converted (for off-screen).
241 * @return false if the conversion function decides the coordinates are not inside. returns true if there is no conversion function
243 bool TranslateCoordinates(Vector2& screenCoords) const;
246 * @copydoc Dali::RenderTask::WorldToViewport()
248 bool WorldToViewport(const Vector3& position, float& viewportX, float& viewportY) const;
251 * @copydoc Dali::RenderTask::ViewportToLocal()
253 bool ViewportToLocal(Actor* actor, float viewportX, float viewportY, float& localX, float& localY) const;
255 public: // Used by RenderTaskList, which owns the SceneGraph::RenderTasks
257 * Retrieve the scene-graph RenderTask object.
258 * @return The scene-graph object
260 const SceneGraph::RenderTask& GetRenderTaskSceneObject() const;
263 * Retrieve the render task list RenderTask object belongs to.
264 * @return The render task list
266 RenderTaskList& GetRenderTaskList() const;
268 public: // Implementation of Object
270 * @copydoc Dali::Internal::Object::SetDefaultProperty()
272 void SetDefaultProperty(Property::Index index, const Property::Value& propertyValue) override;
275 * @copydoc Dali::Internal::Object::GetDefaultProperty()
277 Property::Value GetDefaultProperty(Property::Index index) const override;
280 * @copydoc Dali::Internal::Object::GetDefaultPropertyCurrentValue()
282 Property::Value GetDefaultPropertyCurrentValue(Property::Index index) const override;
285 * @copydoc Dali::Internal::Object::OnNotifyDefaultPropertyAnimation()
287 void OnNotifyDefaultPropertyAnimation(Animation& animation, Property::Index index, const Property::Value& value, Animation::Type animationType) override;
290 * @copydoc Dali::Internal::Object::GetSceneObjectAnimatableProperty()
292 const SceneGraph::PropertyBase* GetSceneObjectAnimatableProperty(Property::Index index) const override;
295 * @copydoc Dali::Internal::Object::GetSceneObjectInputProperty()
297 const PropertyInputImpl* GetSceneObjectInputProperty(Property::Index index) const override;
301 * Query whether a Finished signal should be emitted for this render-task.
302 * This should only be called by NotificationManager, before signals are emitted.
303 * @pre The refresh rate must be REFRESH_ONCE.
304 * @post HasFinished() will return false on subsequent calls, until the render-task is processed again.
305 * @return \e true if the refresh once render task has finished. Otherwise it returns \e false.
310 * Emit the Finished signal
312 void EmitSignalFinish();
315 * @copydoc Dali::RenderTask::FinishedSignal()
317 Dali::RenderTask::RenderTaskSignalType& FinishedSignal();
320 * Connects a callback function with the object's signals.
321 * @param[in] object The object providing the signal.
322 * @param[in] tracker Used to disconnect the signal.
323 * @param[in] signalName The signal to connect to.
324 * @param[in] functor A newly allocated FunctorDelegate.
325 * @return True if the signal was connected.
326 * @post If a signal was connected, ownership of functor was passed to CallbackBase. Otherwise the caller is responsible for deleting the unused functor.
328 static bool DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor);
334 * @param[in] sceneObject The scene graph object
335 * @param[in] renderTaskList The render task list
337 RenderTask(const SceneGraph::RenderTask* sceneObject, RenderTaskList& renderTaskList);
340 * A reference counted object may only be deleted by calling Unreference()
342 ~RenderTask() override;
344 private: // not copyable
345 RenderTask() = delete;
346 RenderTask(const RenderTask&) = delete;
347 RenderTask& operator=(const RenderTask&) = delete;
350 ActorObserver mSourceActor; ///< Source actor
351 ActorObserver mCameraActor; ///< Camera actor
352 ActorObserver mViewportGuideActor; ///< Actor to matching viewport of this render task to this Actor.
353 WeakHandle<Dali::Actor> mInputMappingActor; /// used to mapping screen to frame buffer coordinate, not kept alive by rendertask
354 RenderTaskList& mRenderTaskList; ///< The render task list
356 Vector4 mClearColor; ///< Optional clear color
358 Vector2 mViewportPosition; ///< The cached viewport position
359 Vector2 mViewportSize; ///< The cached viewport size
361 uint32_t mRefreshRate; ///< Determines how often the task is processed.
363 uint32_t mRefreshOnceCounter;
365 FrameBufferPtr mFrameBuffer;
367 Dali::RenderTask::ScreenToFrameBufferFunction mScreenToFrameBufferFunction; ///< Used to convert screen to frame-buffer coordinates
369 bool mExclusive : 1; ///< True if the render-task has exclusive access to the source Nodes.
370 bool mInputEnabled : 1; ///< True if the render-task should be considered for input handling.
371 bool mClearEnabled : 1; ///< True if the render-task should be clear the color buffer.
372 bool mCullMode : 1; ///< True if the render-task's actors should be culled
373 bool mRequiresSync : 1; ///< True if the GL sync is required to track the render of.
376 Dali::RenderTask::RenderTaskSignalType mSignalFinished; ///< Signal emmited when the render task has been processed.
379 } // namespace Internal
381 // Helpers for public-api forwarding methods
383 inline Internal::RenderTask& GetImplementation(Dali::RenderTask& task)
385 DALI_ASSERT_ALWAYS(task && "RenderTask handle is empty");
387 BaseObject& handle = task.GetBaseObject();
389 return static_cast<Internal::RenderTask&>(handle);
392 inline const Internal::RenderTask& GetImplementation(const Dali::RenderTask& task)
394 DALI_ASSERT_ALWAYS(task && "RenderTask handle is empty");
396 const BaseObject& handle = task.GetBaseObject();
398 return static_cast<const Internal::RenderTask&>(handle);
403 #endif // DALI_INTERNAL_RENDER_TASK_H