[Tint] Dual source blending SPIR-V

[Akio Gaule]

Hi:

I have a shader that is using dual source blending. The generated SPIR-V adds the proper Location and Index decoration, but Tint is not picking up the Index decoration as a "Blend Source" attribute, so it complains that there's multiple outputs for the same location. Is this a bug or do I need to add something extra to the generated SPIR-V in order to use dual source blending?

Thanks

[James Price]

Hi Akio,

We haven't implemented dual-source blending in the SPIR-V reader yet.

I've opened crbug.com/371367697 to track the work to support this.

James

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