add first pass Web implementation

2023-09-22 08:22:19 +08:00
parent 504b1efda4
commit 52957caa0d
87 changed files with 13094 additions and 0 deletions
--- a/lib/PolyvoxFilamentPluginWeb.dart
+++ b/lib/PolyvoxFilamentPluginWeb.dart
@@ -0,0 +1,82 @@
+// In order to *not* need this ignore, consider extracting the "web" version
+// of your plugin as a separate package, instead of inlining it in the same
+// package as the core of your plugin.
+// ignore: avoid_web_libraries_in_flutter
+import 'dart:html';
+import 'dart:ui';
+import 'dart:web_gl';
+import 'package:wasm_ffi/wasm_ffi.dart';
+import 'generated_bindings_web.dart';
+
+import 'package:flutter/services.dart';
+import 'package:flutter_web_plugins/flutter_web_plugins.dart';
+
+/// A web implementation of the PolyvoxFilamentPlatform of the PolyvoxFilament plugin.
+class PolyvoxFilamentPluginWeb {
+  // late html.CanvasElement _canvas;
+  late RenderingContext _gl;
+  DynamicLibrary _nativeLib;
+  dynamic _texture;
+
+
+  PolyvoxFilamentPluginWeb() {
+    var canvas = document.querySelector('#drawHere') as CanvasElement;
+
+    _gl = canvas.getContext("webgl") as RenderingContext;
+    _texture = _gl.createTexture();
+    _gl.bindTexture(WebGL.TEXTURE_2D, _texture);
+    _gl.texParameteri(WebGL.TEXTURE_2D, WebGL.TEXTURE_MIN_FILTER, WebGL.LINEAR);
+    _gl.texParameteri(WebGL.TEXTURE_2D, WebGL.TEXTURE_MAG_FILTER, WebGL.LINEAR);
+    _gl.texParameteri(WebGL.TEXTURE_2D, WebGL.TEXTURE_MAG_FILTER, WebGL.LINEAR);
+    _gl.texParameteri(WebGL.TEXTURE_2D, WebGL.TEXTURE_WRAP_S, WebGL.CLAMP_TO_EDGE);
+    _gl.texParameteri(WebGL.TEXTURE_2D, WebGL.TEXTURE_WRAP_T, WebGL.CLAMP_TO_EDGE);
+    
+    _gl.clearColor(.1, .2, .3, 1.0);
+    _gl.clear(WebGL.COLOR_BUFFER_BIT);
+
+    _nativeLib = DynamicLibrary.open('libopus.so');
+
+    // _gl.texImage2D(
+    //     WebGL.TEXTURE_2D,
+    //     0,
+    //     WebGL.RGBA8,
+    //     canvas.width ?? 100,
+    //     canvas.height ?? 100,
+    //     0,
+    //     WebGL.RGBA,
+    //     WebGL.UNSIGNED_BYTE,
+    //     Uint8List.fromList([255, 0, 0, 255]));
+  }
+  static void registerWith(Registrar registrar) {
+    final MethodChannel channel = MethodChannel("app.polyvox.filament/event",
+        const StandardMethodCodec(), registrar.messenger);
+    final PolyvoxFilamentPluginWeb instance = PolyvoxFilamentPluginWeb();
+    channel.setMethodCallHandler(instance.handleMethodCall);
+  }
+
+  Future handleMethodCall(MethodCall call) async {
+    switch (call.method) {
+      case "createTexture":
+        return 0;
+      case "destroyTexture":
+        return true;
+      case "createFilamentViewer":
+//             if(viewer != nil) {
+//                 destroy_swap_chain(viewer)
+//                 delete_filament_viewer(viewer)
+//                 viewer = nil
+//             }
+//             let callback = make_resource_loader(loadResource, freeResource,  Unmanaged.passUnretained(self).toOpaque())
+//             let args = call.arguments as! [Any]
+//             let width = args[0] as! Int64
+//             let height = args[1] as! Int64
+                                                                                                    
+//             viewer = create_filament_viewer(nil, callback)
+//             var pixelBufferTextureId = unsafeBitCast(pixelBuffer!, to: UnsafeRawPointer.self)
+//             create_swap_chain(viewer, pixelBufferTextureId, UInt32(width), UInt32(height))
+// //            create_render_target(viewer, CVOpenGLESTextureGetName(glTexture!), UInt32(width),UInt32(height)); // OpenGL
+
+//             update_viewport_and_camera_projection(viewer, UInt32(args[0] as! Int64), UInt32(args[1] as! Int64), 1.0)
+//             set_frame_interval(viewer, Float(frameInterval))
+//             result(unsafeBitCast(viewer, to:Int64.self))    }
+  }