Sonste
Hello,
I finally found a solution by checking this forum:
https://www.construct.net/fr/forum/construct-3/general-discussion-7/force-webgl1-135173
But let's me recap the process:
1: Export your project NOT minified with cordova to an Android studio project
2: In your folder, follow this path app\src\main\assets\www
3: Open the file C2runtime.js with Notepad
4: In Notepad, go to Edit, Search
5: Search this line:
this.gl.getParameter(this.gl.VERSION).indexOf("WebGL 2") === 0
Replace by this:
this.gl.getParameter(this.gl.VERSION).indexOf("WebGL") === 0
6: By the same process, replace this line:
this.canvas.getContext("webgl2", attribs)
by this:
this.canvas.getContext("webgl", attribs)
7: Then, import your project in Android Studio, build it and generate a signed apk with your keystore
Sadly, according to the Scirra's team, this bug came by Google Chrome who blacklisted WebGL2 for some devices. I wrote a message to them to find a solution by allow all the devices to get WebGL2. For now, we have to agree to repeat this procedure for all our mobile games using Admob...
Anyway, thanks all lot for the community, you're awesome