Fix examples/webgl_gpgpu_birds_gltf.html cohesion 0 error

[gonnavis]

https://threejs.org/examples/?q=webgl_gpgpu_birds_gltf#webgl_gpgpu_birds_gltf

Set gui cohesion to 0 will cause all birds dissaper and can't go back, because of when just set cohesion to 0 will let the divisor threshDelta to be 0.

[Mugen87]

Sidenode: Do we really need two GPGPU birds examples? To me, the orignial (more minimalistic) webgl_gpgpu_birds is still the best.

BTW: This issue also exists in webgl_gpgpu_birds.

[gonnavis]

Sidenode: Do we really need two GPGPU birds examples? To me, the orignial (more minimalistic) webgl_gpgpu_birds is still the best.

I think they all useful because one is creating the geometry from the scratch, and another from loaded gltf and containing animation.
I'm preparing to make a project based on webgl_gpgpu_birds_gltf.html.

BTW: This issue also exists in webgl_gpgpu_birds.

I intended to modify the webgl_gpgpu_birds if this change is correct.

[marcofugaro]

Sidenode: Do we really need two GPGPU birds examples? To me, the orignial (more minimalistic) webgl_gpgpu_birds is still the best.

This example was also useful to me in the past to see how to handle custom geometry with custom positions (all of the BufferAttribute stuff)

[Mugen87]

This example was also useful to me in the past to see how to handle custom geometry with custom positions (all of the BufferAttribute stuff)

AFAIK, we do have other examples that are focused on the usage of BufferGeometry.

[mrdoob]

Sidenode: Do we really need two GPGPU birds examples? To me, the orignial (more minimalistic) webgl_gpgpu_birds is still the best.

I think the examples are different enough, but I sure want to do some clean up in webgl_gpgpu_birds_gltf 😬

[mrdoob]

Thanks!