Qt for WebAssembly

Mike Tolkachev

I'm currently trying to make "photo album" app just for Qml WebAssembly testing.
And i have some issue with Image.

I have found this known issues:
Network access: The web sandbox limits network access to a subset of what is available for native apps.
QNetworkAccessManager http requests to the web page origin server, or to a server which supports CORS.

Simple main.qml

import QtQuick 2.12
import QtQuick.Window 2.12

Window {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

    Image {
      id: liveImageItem
      height: parent.height
      width: parent.width

      source: "http://mydomain.com/img.jpg"
    }
}

I downloaded wasm binary and other files to mydomain.com
Well, i opening mydomain, see Qt logo, downloading/compiling and white screen.
What's wrong?

raven-worx

@Mike-Tolkachev
any hints in the browser's console?

Mike Tolkachev

@raven-worx
Oh, sorry, yes.
Firefox showing it sometimes:
Error: WebGL warning: texSubImage2D: Texture has not been initialized prior to a partial upload, forcing the browser to clear it. This may be slow. qtloader.js line 409 > eval:1:259963
Error: WebGL warning: texSubImage2D: This operation requires zeroing texture data.