This is an example of how to use Flutter Engine Embedder in order to get a Flutter project rendering in a new host environment. The intended audience is people who need to support host environment other than the ones already provided by Flutter. This is an advanced topic and not intended for beginners.
In this example we are demonstrating rendering a Flutter project inside of the GUI library GLFW. For more information about using the embedder you can read the wiki article Custom Flutter Engine Embedders.
The key difference between this example and the other GLFW example in this folder is that the present example implements dirty region management (i.e. rendering only the regions that have changed between frames as opposed to always rendering the entire frame). For more information on the implementation of dirty region management within the Embedder API, see DRM Embedder.
The following example was tested on Linux but with a bit of tweaking should be able to run on other *nix platforms and Windows. However, because this example uses the EGL library, it is not compatible with MacOS platforms.
The example has the following dependencies:
sudo apt-get install libglfw3sudo apt-get install cmakesudo apt-get install libglfw3-devIn order to build and run the example you should be able to go into this directory and run ./run.sh.
There are a few things you might have to tweak in order to get your build working:
CMakeList.txt file you will see that it is set up to search for the header and library for the Flutter Engine in specific locations, those might not be the location of your Flutter Engine.kPixelRatio variable in FlutterEmbedderGLFW.cc file.CMakeLists.txt we are searching for the GLFW library, if CMake can't find it you may have to edit that.