1# graphic_graphic_2d 2 3- [Introduction](#Introduction) 4- [directory](#directory) 5- [Repositories Involved](#RepositoriesInvolved) 6 7## Introduction 8 9**Graphic subsystem** provides graphical interface capabilities. 10 11Its main structure is shown in the following figure: 12 13 14 15The layered description of the OpenHarmony graphics stack is as follows: 16 17• Interface layer: Provides native API capabilities for graphics, including: WebGL, Native Drawing drawing capabilities, OpenGL instruction-level drawing capabilities support, etc. 18 19• Framework layer: divided into five modules: Render Service, Drawing, Animation, Effect, Display and Memory Management. 20| Module | Capability Description | 21|-------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| 22| Render Servicel | Provides the rendering capabilities of the UI framework. Its core responsibility is to convert ArkUI's control description into drawing tree information, and perform optimal path rendering according to the corresponding rendering strategy. At the same time, it is responsible for the core underlying mechanism of UI sharing in multi-window smoothness and spatial state. | 23| Drawing | Provides a standardized interface within the graphics subsystem, and mainly completes basic functions such as 2D rendering, 3D rendering and rendering engine management. | 24| Animation | Provides related capabilities of the animation engine. | 25| Effect | Mainly completes the ability to process image effects, rendering effects and other effects, including: multi-effect series and parallel processing, adding rendering effects, control interaction effects and other related capabilities during layout. | 26| Display and Memory Management | This module is the main module for the decoupling of the graphics stack and hardware. It mainly defines the display and memory management capabilities of OpenHarmony. The defined southbound HDI interface requires different OEMs to complete the adaptation of the OpenHarmony graphics stack. match. | 27 28• Engine layer: includes two modules, 2D graphics library and 3D graphics engine. The 2D graphics library provides the underlying API for 2D graphics rendering, and supports the underlying capabilities of graphics rendering and text rendering. 3D graphics engine capabilities are still under construction. 29 30 31## content 32``` 33foundataion/graphic/graphic_2d 34├── figures # Markdown referenced image catalog 35├── frameworks # framework code directory 36│ ├── animation_server # animationServer code 37│ ├── bootanimation # Boot animation directory 38│ ├── dumper # graphic dumper code 39│ ├── fence # fence code 40│ ├── vsync # Vsync code 41├── rosen # framework code directory 42│ ├── build # build instructions 43│ ├── doc # doc 44│ ├── include # external header file code 45│ ├── lib # lib 46│ ├── modules # graphic Each module code of the subsystem 47│ ├── samples # sample code 48│ ├── test # develop test code 49│ ├── tools # tool code 50├── interfaces # graphical interface storage directory 51│ ├── innerkits # internal native interface storage directory 52│ └── kits # js/napi external interface storage directory 53└── utils # widget storage directory 54``` 55 56 57## Repositories Involved<a name="RepositoriesInvolved"></a> 58- **graphic_graphic_2d** 59- [ace_ace_engine](https://gitee.com/openharmony/ace_ace_engine) 60- [aafwk_standard](https://gitee.com/openharmony/aafwk_standard) 61- [multimedia_player_framework](https://gitee.com/openharmony/multimedia_player_framework) 62- [multimedia_camera_framework](https://gitee.com/openharmony/multimedia_camera_framework) 63- [Windowmanager](https://gitee.com/openharmony/windowmanager)
