This is a fork of the old Manao's masktools2 plugin. It mostly contains performance improvements, bugfixes and some little things that make the plugin more "mature".

• Works correctly with Avisynth Alpha 4 (including mt). Doesn't work with previous alphas.

• Much cleaner and easy to understand codebase.

• No MMX-optimized versions. MMX is too old to support and is always slower than SSE2.

• all luts: faster lut calculation, faster startup, reduced memory footprint if the same lut is used for multiple planes or some planes aren't processed. For example mt_lutxyz(c1, c2, c3, "x y + z -") will use only 16MBs of memory instead of 48MBs.

• mt_lutspa: does not depend on source clip performance as it doesn't get requested at all (unless mode 2 is used). Always much faster (5-o9k times).

• all filters: faster modes 2, 4 and 5 (copy), negative (memset) modes.

• mt_hysteresis: 3-4 times better performance.

• all luts: performance in mode 3 with empty lut is now identical to mode 2. Thus mt_lut(chroma="128") is a bit faster than grayscale() instead of being much slower.

• mt_merge: luma=true now supports YV24.

• mt_luts: correct value is used as x. More info here.

• sobel/roberts/laplace modes of mt_edge: better performance when SSSE3 is available.

• mt_edge("cartoon"): 10 times faster when SSE2 is available.

• all asm-optimized filters: same performance on any resolution up to mod-1. Original masktools used unoptimized version for any non-mod8 clips.

All filters were tested on Core i7 860. Performance might be a bit different on other CPUs.