IIUC, given this shader

@group(0) @binding(0) var tex: texture_depth_2d;
@group(0) @binding(1) var smp: sampler;

@compute @workgroup_size(1) fn cs() {
  _ = textureSample(tex, smp, vec2f(0));
}

The layout: 'auto' algorithm will make a bind group layout with tex set to sampleType: 'depth' and smp set to type: 'filtering'

This layout is invalid as depth textures are unfiltered-float and require a sampler that is non-filtering.

Similarly

@group(0) @binding(0) var tex: texture_2d<u32>;
@group(0) @binding(1) var smp: sampler;

@compute @workgroup_size(1) fn cs() {
  _ = textureGather(0, tex, smp, vec2f(0));
}

will make a bind group layout with tex set to sampleType: 'uint' and smp set to type: 'filtering' which is also invalid.

I'm wondering if it would be good to change the layout: 'auto' algorithm so that a sampler starts as 'filtering' but if it's used with a texture_depth_xxx or texture_??<i32> or texture_??<u32> then it's set to non-filtering. That would make the layout valid.

Note: dawn was not correctly validating that sampleType: 'depth'/'sint'/'uint' texture binding can not be used with a type: 'filtering' sampler. With that validation added this issue surfaced.