Overlapping buffers

[jatentaki]

Hello, running your code in chrome 113 I get the following error:

Writable storage buffer binding aliasing found between [BindGroup] set at bind group index 0, binding index 0, and [BindGroup] set at bind group index 0, binding index 1, with overlapping ranges (offset: 0, size: 4) and (offset: 0, size: 4) in [Buffer].
 - While encoding [ComputePassEncoder].DispatchWorkgroups(3907, 1, 1).

Does it still work on your system?

[m-schuetz]

Unfortunately Chrome now forbidds aliasing between buffers which was meant to be a substantial performance improvement.

• WebGPU does not allow mixing non-atomic reads and atomic writes of a buffer.
• Which is why we bound the same buffer twice as a workaround to do that anyway.
• Chrome no longer allows that.

You can try to fix it by removing "spawnCounterNonAtomic" and everything related to it.

• https://github.com/benediktpeter/webgpu-particle-system/blob/main/src/shaders/particle.simulation.wgsl
• https://github.com/benediktpeter/webgpu-particle-system/blob/04ac5815952181ec05dc081a3dd55e21c65c2474/src/particles.ts#L120-L126

[jatentaki]

Great, thanks a lot. This answers my question so feel free to close the issue if you wish.