Generate custom texture and use in material

Questions
8

ah, now it’s clearer :slight_smile:
Use a render target then

Something like I did here: LightNoise (selective bloom + noise)
See the section of lines 46 - 72. There, I setup a render target, instantiate a camera and a plane with a custom shader. It’s intened to render a height map of noise, which I share between other objects in the scene.
And then, in the animation loop:

  renderer.setRenderTarget(renderTarget);
  renderer.render(rtScene, rtCamera);
  renderer.setRenderTarget(null);
...
  renderer.render(scene, camera);

Also, there are several examples with render targets: three.js examples