WEBGPU STUDY / FAT LINES

Width is a backend contract.

These focused modes separate WebGPU Line2 construction, instanced segment topology, wireframe generation, and post-render raycasting resolution.

Preparing study—

Creating a WebGPU fat-line graph…

Click a line to test `Raycaster.params.Line2.threshold`. The first render must populate screen-space resolution before a reliable pick; `?forceWebGL=1` exercises the compatibility path.

THREE.JS FOUNDATIONS / FAT LINES HAVE A LIFECYCLE