[Tint] Requiring language feature in SPIRV

[Akio Gaule]

Hi all,

I have an HLSL compute shader that is writing into a RWTexture2D (Storage Texture). I'm using DXC to compile to SPIRV and then use Tint to generate WGSL but I'm getting the following error:

Tint: error: language feature 'readonly_and_readwrite_storage_textures' is not allowed in the current environment.

It looks like I need to add a requirement for the "readonly_and_readwrite_storage_textures" language feature in the shader (similar to the "requires readonly_and_readwrite_storage_textures:" in WGSL) but I have no idea how I can do that. Is there a way to add these language requirements in either HLSL or SPIRV?

Thanks

[James Price]

Hi Akio,

Are you using the Tint executable or programmatically as a library?

If you're using Tint as a library, you just need to add the feature to the options struct that you pass to `tint::spirv::reader::Read()`.

If you're using the Tint executable, there's currently no way to do this as we haven't added an option for it, but it should be straightforward to do.

James

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[Akio Gaule]

Hi James,

I'm using Tint as an executable so after looking in the code,  I ended up adding an option to add all required language features as allowed features, similar to what DXC does with capabilities in SPIR-V. Is it possible to have something like this, or maybe a command line argument to specify allowed features? Do I need to file a bug/request somewhere?

Thanks

[James Price]

Hi Akio,

I've opened crbug.com/368289749 for this request.

James

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