openworld_gl 0.0.24

cross-platform call OpenGL API by Dart through dart:ffi. 3D programming in the cross-platform. Provides OpenGL with Texture Widget on Flutter.

OPENWORLD GL

This is the flutter gl package updated to work with the latest version of gradle. It is used to work with the https://github.com/forthtemple/openworlddart/ package.

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:openworld_gl/flutter_gl.dart';

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);

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

share opengl context with flutter_gl

Android

when init the plugin, save share opengl context with ThreeEgl,

ThreeEgl.setContext("shareContext", shareEglEnv.eglContext);

so you can get it use ThreeEgl lib, then create yourself opengl context share with "shareContext"

shareContext = ThreeEgl.getContext("shareContext");

iOS

for iOS the key is 3 ...

eAGLShareContext = ThreeEgl.getContext(key: 3);

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!