* WebGPURenderer: Add WebGPUProgrammableStage.

* WebGPUProgrammableStage: Clean up.

* WebGPURenderPipelines: Clean up.

* WebGLNodeBuilder: Fix warns for now

* WebGPU: Custom model light example

* cleanup

* fix titles

* description

* more objective title

* improve description

* fix typo

* better var name

Update VideoTexture doc with note about using RGBA format to avoid Firefox performance issue. (#21746)

* VideoTexture should use RGBA format to avoid firefox issue.

There's an issue with Firefox desktop that causes RGBFormat on a video texture to destroy performance.  When testing with a single 4K 360 video, frame times on Firefox with RGBFormat were ~200x RGBAFormat.  (62ms vs .32ms)  I propose defaulting to RGBAFormat to avoid this.

* Revert VideoTexture.js changes.

* Update VideoTexture doc with 'format' default value and note about a Firefox bug.

* WebGPURenderPipelines: Determine pipeline based on parameters.

* Add WebGPURenderPipeline.

* [Doc/zh]: Update PCDLoader.html

* [Doc/zh]: Update PCDLoader.html

* Bring dat.gui inside vr

* Example code clean up.

* Refactored interaction code.

* InteractiveGroup: Added pointer events support

* Improved webxr_vr_sandbox scene

says "zoom" instead of "pan"

* NodeMaterial BSDFs, revision and updates (WIP)

* fix title

* add Math.LENGTH

* ContextNode, VarNode, NodeKeywords, LightNode (WIP) and updates

* a bit cleanup

* modify order

* PI AND RECIPROCAL_PI keywords

* Rename BSDFunctions.js -> BSDFs.js

* optimization: not recompute the world matrix

* use context material if need

* PropertyNode, texture test (WIP)

* Flow code support, LightsNode WIP

* multiples lights test, decay and distance

* fix light.intensity

* test light.intensity

* MaterialNode

* WebGPU: selective_lights example (bsdfs phong)

* cleanup

* add webgpu_selective_lights in example list

* cleanup

* use importmap

* update title

* fix example name and screenshot

* fix info text

* cleanup

* check if is texture

* cleanup example

* update screenshot

Co-authored-by: NJuan Peist <juan.peist@netcentric.biz>

* Get linear and angular velocity for targetRay and grip poses if available

WebXR spec has been updated allowing the User Agent to pass along linear and angular velocity values for the controller poses. Read this if it's available and pass attach to the _targetRay and _grip structures.

See https://immersive-web.github.io/webxr/#xrpose-interface for more info.

* fixed linting errors

* more linting issues :\

* third time's a charm

* fix check for existence of angular and linear velocity to fail gracefully when not present

* simplified to use copy instead of set

* Update WebXRController.js

Clean up code style.
Co-authored-by: NMichael Herzog <michael.herzog@human-interactive.org>
Co-authored-by: NMr.doob <info@mrdoob.com>