Examples - Update Compute Fluid to use IndirectStorageBuffer

[cmhhelgeson]

Related Issue: #31488

Description

Update compute fluid to use indirect compute.

[mrdoob]

Does this improve performance?

[cmhhelgeson]

http://raw.githack.com/cmhhelgeson/three.js/compute_fluid_indirect/examples/webgpu_compute_particles_fluid.html

[Mugen87]

I see no difference in performance, tbh.

[RenaudRohlinger]

I don't think in this particular example IndirectStorageBuffer would improve performances as it's too dense, it would need to be a lot wider to have some inactive particles or update the particleCount to make it a uniform dynamic count that doesn't restart the simulation but rather just disable the inactive particles.

Nevertheless it's always good to have some Indirect example so that developers can understand how it works!

[Mugen87]

Nevertheless it's always good to have some Indirect example so that developers can understand how it works!

I'm okay with merging the PR because of that reason.

Normally the examples should use simple setups with the minimal amount of code that is required to demonstrate an effect. But for learning and further developed it's indeed good to have a few indirect compute examples around.