Texture Binding Array not Validated Against Flag

[rubengrim]

BindGroupLayoutEntry {
    binding: 0,
    visibility: ShaderStages::COMPUTE,
    ty: BindingType::Texture {
        sample_type: TextureSampleType::Float { filterable: true },
        view_dimension: TextureViewDimension::D2,
        multisampled: false,
    },
    count: NonZeroU32::new(64),

@group(0) @binding(0) var textures: binding_array<texture_2d<f32>>;

produces
panicked at /home/ruben/.cargo/registry/src/index.crates.io-6f17d22bba15001f/naga-0.13.0/src/back/glsl/mod.rs:1007:44: internal error: entered unreachable code

This happens in compute only, things seem to work as they should in fragment.

Fixing the size of the binding array doesn't change anything.

Platform
Zorin OS 16.3 (Ubuntu 20.04 LTS), wgpu 0.17.1, naga 0.13.0

[cwfitzgerald]

I think this actually is a bug in wgpu where we aren't validating the count member against the presence of the bindless array feature. OpenGL shouldn't ever have access to bindless arrays, meaning naga shouldn't ever need to try to generate them.

Bindless is not well covered in our test suite as it was added before the test suite was added.