init Files

libraries/lvgl/docs/overview/vg_lite_tvg.rst

@@ -0,0 +1,27 @@
+.. _vg_lite_tvg:
+
+=================
+VG-Lite Simulator
+=================
+
+LVGL integrates a VG-Lite simulator based on ThorVG.
+Its purpose is to simplify the debugging of VG-Lite adaptation and reduce the time of debugging and locating problems on hardware devices.
+
+It has been integrated into the CI automated compilation and testing process to ensure that the VG-Lite rendering backend can be fully tested after each PR modification.
+
+How it works
+************
+
+Sort out the APIs in the ``vg_lite.h`` header file provided by the vendor, re-implement the APIs using `ThorVG <https://github.com/thorvg/thorvg>`_, 
+and simulate the same rendering images as the real hardware on the simulator.
+
+Configuration
+*************
+
+1. Enable VG-Lite rendering backend, see `VG-Lite Rendering Backend </overview/renderers/vg_lite>`__.
+
+2. Enable ThorVG and turn on the configuration :c:macro:`LV_USE_THORVG_INTERNAL` or :c:macro:`LV_USE_THORVG_EXTERNAL`.
+It is recommended to use the internal ThorVG library to ensure uniform rendering results.
+
+3. Enable :c:macro:`LV_USE_VG_LITE_THORVG` and set :c:macro:`LV_DRAW_BUF_ALIGN` to 64. The rest of the options can remain default.
+Make sure :c:macro:`LV_VG_LITE_USE_GPU_INIT` is enabled, because the thorvg drawing context needs to be initialized before it can be used.