fabs/rotate-me-fast
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rotate-me-fast/TODO.md
Fabien Freling 7c6cfd9046 Create small overlap in tiles. 
Tiles overlap on the bottom line and the right column.
Having an overlap allows us to get neighbor points for each point in a
tile, regardless of its position.
2014-07-10 22:01:55 +02:00

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Raw Blame History

[-] Quaternions [X] Draw rotated pixels in src order [X] Use atan2 at beginning and end of line. Interpolation in-between values [X] Test pixel perfect 90 [ ] Fix out-of-bounds pixel set

[ ] Optimization for square images? [X] Fixed point computation? [-] -funroll-loops

Cache

[-] Rotate per channel -> no gain [ ] Load pixels in 64-bit variable [X] Cut image in tiles [X] Overlap [-] Rotate in one temp tile then copy/move it [X] Align tiles in memory [-] Align memory -> no gain [ ] RGBX format [ ] Spiral layout?

Quality

[X] Interpolate using SIMD, SSE (no big gain) [ ] Image borders