Nodes: Add anaglyph and parallax barrier pass nodes.

[Mugen87]

Related issue: #29173

Description

Adds pass nodes for anaglyph and parallax barrier effects. Instead of creating an example per node class, the effects are selectable in webgpu_display_stereo.

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

Filesize dev	Filesize PR	Diff
685.4 kB (169.7 kB)	685.4 kB (169.7 kB)	+0 B

🌳 Bundle size after tree-shaking

Minimal build including a renderer, camera, empty scene, and dependencies.

Filesize dev	Filesize PR	Diff
462 kB (111.4 kB)	462 kB (111.4 kB)	+0 B

[Mugen87]

I'm not sure why webgpu_backdrop_water fails with this PR. AFAICS, the PR does not touch related logic...

[cmhhelgeson]

Would it make sense to collapse these classes into a shared StereoPassNode or class? It seems like there's lots of shared functionality between anaglyph and parallax?

[Mugen87]

There is already StereoPassNode but it works differently than AnaglyphPassNode and ParallaxBarrierPassNode. So it would also be required to name a shared module differently.

This kind of optimization is something that I would consider in a subsequent PR though.

[Mugen87]

I've updated the screenshot for webgpu_backdrop_water and it seems there is some sort of timing issue. In the new screenshot, the spheres are at different positions. Not sure why this happens. If this is somehow related to the latest performance improvements, I wonder why the CI did not fail earlier...

[sunag]

I've updated the screenshot for webgpu_backdrop_water and it seems there is some sort of timing issue. In the new screenshot, the spheres are at different positions. Not sure why this happens. If this is somehow related to the latest performance improvements, I wonder why the CI did not fail earlier...

Thanks @Mugen87, I also didn't understand exactly what happened, but it's good to see it working again.

[mrdoob]

Hmm... How come we're adding so many thing to src? Shouldn't these nodes be addons?

[Mugen87]

I think it was some sort of "unspoken agreement" to add node classes in the core. We should establish a policy like in #29187 (comment) to address this issue.