cc: @pcwalton
How will we manage WR for devices without viable GPUs?
Well… sort of? No browser (outside of Gecko/Servo with WR) currently paints opaque primitives in dirty areas front to back. They all give up a ton of perf because of this.
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IIRC, Gecko paints back to front but has code to exclude occluded parts (that only considers opaque rectangular occluders). I wouldn't be surprised that we can do better than this.
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Oh, interesting. I was thinking about just having a 1-bit array of tiles and using SIMD to quickly set them and check for occlusion. (Actually when I prototyped this, SIMD wasn’t even really necessary.)
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