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authorVito Caputo <vcaputo@pengaru.com>2019-11-24 17:44:53 -0800
committerVito Caputo <vcaputo@pengaru.com>2019-11-24 17:50:18 -0800
commit4d87a91891a2ff29f399edebfcd3590316a14445 (patch)
tree0560129e41949191082fbb4611ebca328269d414 /bootstrap
parent0b2f0d406657515559c697533f5e27cf05437507 (diff)
montage: rework fragmenter
This repurposes the generic fb_fragment_tile_single() to better fit the montage use case. Partially covered areas are simply skipped, and tiles no longer need to be square. In determining the tile width and height, I'm just using the sqrt of the number of modules and dividing the frame width and height. But when the sqrt has a fraction, it's rounded up on the width divide and rounded down on the height divide. So the width gets the extra column of tiles, and the height just throws away the fraction. I think it's OK for now, until someone gets a bug up their ass and wants to avoid having vacant tiles in the bottom right corner when the number of modules doesn't cooperate. One problem with the just skipping partially covered areas is they don't get zeroed out - no fragment is ever generated for them. To fix that there will prolly have to be a fb_fragment_zero() of the frame @ prepare :(. I guess it wouldn't be the end of the world if the fragmenter itself zeroed out skipped regions. It's kind of an ugly layering violation but this is a private montage- specific fragmenter.
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