wgsl: using a non-filterable texture with a filtering sampler

[dj2]

• [ ] Filtering sampler used with filterable texture passes
• [ ] Filtering sampler used with each of the non-filterable texture types fails

It is a pipeline-creation error if a filtering sampler (i.e. any sampler using interpolative filtering) is used with texture that has a non-filterable format.

4.6 Texture and Sampler Types