1 #ifndef DALI_RENDER_SURFACE_INTERFACE_H
2 #define DALI_RENDER_SURFACE_INTERFACE_H
5 * Copyright (c) 2020 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/integration-api/core-enumerations.h>
23 #include <dali/public-api/common/vector-wrapper.h>
24 #include <dali/public-api/math/vector4.h>
25 #include <dali/public-api/math/rect.h>
26 #include <dali/public-api/object/any.h>
27 #include <dali/public-api/object/weak-handle.h>
28 #include <dali/integration-api/scene.h>
33 class DisplayConnection;
34 class ThreadSynchronizationInterface;
40 class AdaptorInternalServices;
41 class GraphicsInterface;
46 * @brief The position and size of the render surface.
48 typedef Dali::Rect<int> PositionSize;
51 * @brief Interface for a render surface onto which Dali draws.
53 * Dali::Adaptor requires a render surface to draw on to. This is
54 * usually a window in the native windowing system, or some other
55 * mapped pixel buffer.
57 * Dali::Application will automatically create a render surface using a window.
59 * The implementation of the factory method below should choose an appropriate
60 * implementation of RenderSurface for the given platform
63 class RenderSurfaceInterface
69 WINDOW_RENDER_SURFACE,
70 PIXMAP_RENDER_SURFACE,
76 * Inlined as this is a pure abstract interface
78 RenderSurfaceInterface()
79 : mAdaptor( nullptr ),
81 mDisplayConnection( nullptr ),
83 mDepthBufferRequired( Integration::DepthBufferAvailable::FALSE ),
84 mStencilBufferRequired( Integration::StencilBufferAvailable::FALSE )
88 * @brief Virtual Destructor.
89 * Inlined as this is a pure abstract interface
91 virtual ~RenderSurfaceInterface() {}
94 * @brief Return the size and position of the surface.
95 * @return The position and size
97 virtual Dali::PositionSize GetPositionSize() const = 0;
101 * @param[out] dpiHorizontal set to the horizontal dpi
102 * @param[out] dpiVertical set to the vertical dpi
104 virtual void GetDpi( unsigned int& dpiHorizontal, unsigned int& dpiVertical ) = 0;
107 * @brief InitializeGraphics the platform specific graphics surface interfaces
109 virtual void InitializeGraphics() = 0;
112 * @brief Creates the Surface
114 virtual void CreateSurface() = 0;
117 * @brief Destroys the Surface
119 virtual void DestroySurface() = 0;
122 * @brief Replace the Surface
123 * @return true if context was lost
125 virtual bool ReplaceGraphicsSurface() = 0;
128 * @brief Resizes the underlying surface.
129 * @param[in] The dimensions of the new position
131 virtual void MoveResize( Dali::PositionSize positionSize ) = 0;
134 * @brief Called when Render thread has started
136 virtual void StartRender() = 0;
139 * @brief Invoked by render thread before Core::Render
140 * If the operation fails, then Core::Render should not be called until there is
141 * a surface to render onto.
142 * @param[in] resizingSurface True if the surface is being resized
143 * @param[in] damagedRects List of damaged rects this render pass
144 * @return True if the operation is successful, False if the operation failed
146 virtual bool PreRender( bool resizingSurface, const std::vector<Rect<int>>& damagedRects, Rect<int>& clippingRect ) = 0;
149 * @brief Invoked by render thread after Core::Render
150 * @param[in] renderToFbo True if render to FBO.
151 * @param[in] replacingSurface True if the surface is being replaced.
152 * @param[in] resizingSurface True if the surface is being resized.
154 virtual void PostRender( bool renderToFbo, bool replacingSurface, bool resizingSurface, const std::vector<Rect<int>>& damagedRects ) = 0;
157 * @brief Invoked by render thread when the thread should be stop
159 virtual void StopRender() = 0;
162 * @brief Invoked by Event Thread when the compositor lock should be released and rendering should resume.
164 virtual void ReleaseLock() = 0;
167 * @brief Sets the ThreadSynchronizationInterface
169 * @param threadSynchronization The thread-synchronization implementation.
171 virtual void SetThreadSynchronization( ThreadSynchronizationInterface& threadSynchronization ) = 0;
174 * @brief Gets the surface type
176 virtual Dali::RenderSurfaceInterface::Type GetSurfaceType() = 0;
179 * @brief Makes the graphics context current
181 virtual void MakeContextCurrent() = 0;
184 * @brief Get whether the depth buffer is required
185 * @return TRUE if the depth buffer is required
187 virtual Integration::DepthBufferAvailable GetDepthBufferRequired() = 0;
190 * @brief Get whether the stencil buffer is required
191 * @return TRUE if the stencil buffer is required
193 virtual Integration::StencilBufferAvailable GetStencilBufferRequired() = 0;
197 void SetAdaptor( Dali::Internal::Adaptor::AdaptorInternalServices& adaptor )
202 void SetGraphicsInterface( Dali::Internal::Adaptor::GraphicsInterface& graphics )
204 mGraphics = &graphics;
207 void SetDisplayConnection( Dali::DisplayConnection& displayConnection )
209 mDisplayConnection = &displayConnection;
213 * @brief Sets a Scene that is rendered on this surface.
214 * @param scene The Scene object
216 void SetScene( Dali::Integration::Scene& scene )
224 * @brief Undefined copy constructor. RenderSurface cannot be copied
226 RenderSurfaceInterface( const RenderSurfaceInterface& rhs );
229 * @brief Undefined assignment operator. RenderSurface cannot be copied
231 RenderSurfaceInterface& operator=( const RenderSurfaceInterface& rhs );
235 Dali::Internal::Adaptor::AdaptorInternalServices* mAdaptor;
236 Dali::Internal::Adaptor::GraphicsInterface* mGraphics;
237 Dali::DisplayConnection* mDisplayConnection;
238 WeakHandle< Dali::Integration::Scene > mScene;
242 Integration::DepthBufferAvailable mDepthBufferRequired; ///< Whether the depth buffer is required
243 Integration::StencilBufferAvailable mStencilBufferRequired; ///< Whether the stencil buffer is required
245 Vector4 mBackgroundColor; ///< The background color of the surface
250 #endif // DALI_RENDER_SURFACE_INTERFACE_H