I had a look in renderdoc and we have tow full-screen images (canvases) in the alpha pass. I don't remember why I said I was running on the nvidia GPU. It could be that this was running on the intel one I'll check again.
Bug 1625433 Comment 4 Edit History
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I had a look in renderdoc and we have two full-screen images (canvases) in the alpha pass. I don't remember why I said I was running on the nvidia GPU. It could be that this was running on the intel one I'll check again.