How does a VideoTexture get updated?

Questions
1

Hello. I am curious about something.

I have a project where I am using a VideoTexture to put a video on a plane. I have limited the frame rate of the animation by setting a rate limit on calling requestAnimationFrame().

While this does work to slow the animation, I noticed that the video on the plane does not appear to get choppy no matter how low I make the frame rate. This got me wondering how the VideoTexture gets redrawn even though requestAnimationFrame was not called.

Is it the case that threejs is re-rendered even without requestAnimationFrame()? Thanks for helping to shed light on this.

2

No. Only when WebGLRenderer.render() is called, textured surfaces are rendered.

VideoTexture itself uses requestVideoFrameCallback() to know when its needsUpdate flag should be set to true.