Masking a color map texture with an alpha map

Questions
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1

I was wondering if it’s possible for the alpha map to mask a color map (image texture).

Taking this example as a starting point:
https://codepen.io/PierfrancescoSoffritti/embed/wobPVJ

Which works well using an alpha map offset to animate a mask for a sphere mesh which doesn’t have an image texture.

I’ve tried forking that pen for a demo implementation here:

… however the alpha map offset Y no longer animates once I’ve added the color map.

Is this simply not possible with THREE?

Any help appreciated. Thanks!

2

alpha map is tied to texture map
however, you can dodge this using a canvas texture and animate the canvas itself.
it work well if you wish to keep using default three materials and shaders

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3

Concerning the offset not working, check the Texture documentation . If you are using an alpha map and a Color map, they will share their offset.

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