How to use content of any canvas as a texture

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I have a canvas and want to use it's content as a texture. I assume there is a way to use dynamicTexture for that, but couldn't find out a way to do that.

I've created a demo here: https://codepen.io/anon/pen/mQVLaJ I'd like to use the content of the canvas ("Hello World") as the texture for the plane. (I know that I could write the text directly to the dynamicTexture. The text in the example is only for demo purposes. In my project it won't be text.)


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   var canvas = document.getElementById("can");
        var ctx = canvas.getContext("2d");
        ctx.fillStyle = "#ffffff";
        ctx.fillStyle = "#FF0000";
        var embed = canvas.toDataURL('image/jpeg', 1.0);
        var img = document.createElement("img");
        img.onload = function(){
              var txt1 = new BABYLON.Texture(this.src,  scene, true, true, 
                BABYLON.Texture.BILINEAR_SAMPLINGMODE,  null, null, this.src, true); 
               plan.material.diffuseTexture = txt1;
        img.src = embed; 


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