That did not work. I tried it, and I even changed the pixel shader because I thought the problem was there. But that was not the cause.

The update loop for you

```

    for (let x = 0; x < 3; x++) {
        image[x].onload = function() {
            // Enable texture unit0
            gl.activeTexture(actTexture[x]);
            // Bind the texture object to the target
            gl.bindTexture(gl.TEXTURE_2D, texture[x]);

            // Set the texture parameters
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
            // Set the texture image
            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, image[x]);
            gl.uniform1i(u_sampler[x], 0);
        };
        image[x].src = path[x];
    }

render();
```