[Discussion] A slimmer API for allowing buffer usages.

[iwoplaza]

Motivation

• Becomes hard to read with multiple allowed usages.
• Not possible to use the same buffer with different strides ('instance'/'vertex').
• $allowReadonly() and $allowMutable() add the same flags.

Before

// TgpuBuffer<typeof Grid> & AllowReadonly & AllowMutable & AllowVertex & Unmanaged
const fooBuffer = tgpu
  .createBuffer(Grid, initialGrid)
  .$allowReadonly()
  .$allowMutable()
  .$allowVertex('instance')
  .$device(device);

const fooReadonly = asReadonly(fooBuffer);
const fooMutable = asMutable(fooBuffer);
const fooVertex = asVertex(fooBuffer);

After

// TgpuBuffer<typeof Grid> & Storage & Vertex & Unmanaged
const fooBuffer = tgpu
  .createBuffer(Grid, initialGrid)
  .$usage(tgpu.Storage, tgpu.Vertex)
  .$device(device);

const fooReadonly = asReadonly(fooBuffer);
const fooMutable = asMutable(fooBuffer);
const fooVertex = asVertex(fooBuffer, 'instance');

[iwoplaza]

@reczkok @mhawryluk Thoughts? 🤔

[mhawryluk]

looks good 👍