flutter_gl

Description:

flutter gl

Flutter GL #
cross-platform call OpenGL API by Dart through dart:ffi. Provides OpenGL with Texture Widget on Flutter.
Support iOS, Android, Web, macOS, Windows
Linux TODO
Used by three_dart
OpenGL API #
the api is similar to WebGL
only support draw to FBO. then share the FBO texture to Native side.
import #
import 'package:flutter_gl/flutter_gl.dart';
copied to clipboard
Usage #
int width = 200;
int height = 200;
num dpr = 1.0;

flutterGlPlugin = FlutterGlPlugin();

Map<String, dynamic> _options = {
"width": width,
"height": height,
"dpr": dpr,
"antialias": true,
"alpha": false
};
await flutterGlPlugin.initialize(options: _options);

// on web this need called after web canvas dom was added to document
await flutterGlPlugin.prepareContext();

// you can get gl by
gl = flutterGlPlugin.gl;

// then you can call OpenGL ES API by gl like
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);

// use this method to notify Flutter update Texture Widget
// sourceTextue is a texture which bind to FBO framebuffer
flutterGlPlugin.updateTexture(sourceTexture);
copied to clipboard
why use NativeArray replace Dart List #
Dart List convert to ffi pointer need memeory copy.
Run Examples #
Clone or download this repo
cd flutter_gl/flutter_gl/example

flutter run
copied to clipboard
share opengl context with flutter_gl #
Android #
when init the plugin, save share opengl context with ThreeEgl,
ThreeEgl.setContext("shareContext", shareEglEnv.eglContext);
copied to clipboard
so you can get it use ThreeEgl lib, then create yourself opengl context share with "shareContext"
shareContext = ThreeEgl.getContext("shareContext");
copied to clipboard
iOS #
for iOS the key is 3 ...
eAGLShareContext = ThreeEgl.getContext(key: 3);
copied to clipboard
Web #
no need ? just webgl
Windows #
not support get share context now
Android #
check the example project
copy the example/android/app/libs/aars/threeegl.aar
to your app android project same path
change minSdkVersion 24
Screenshot #


Issues #
File any issues, bugs, or feature requests.
Contributing #
Pull request please!