FluxSmooth - pfmod

[pinterf]

As the title says.
An almost complete rewrite. x86/x64, clang, AVX2.

https://github.com/pinterf/FluxSmooth/releases

Packet contains DLLs compiled with clang (LLVM), and (probably) XP compatible Microsoft Visual CPP compiled DLLs.

Enjoy.

- (20190402) v1.3, rewrite by pinterf
  - project moved to github: https://github.com/pinterf/FluxSmooth
  - Built using Visual Studio 2017, additional LLVM 8.0 clang support
  - Changed to AVS 2.6 plugin interface
  - x64 build for Avisynth+
  - Added version resource to DLL
  - Removed MMX support, requires SSE2. (Though pure C is still available in the source)
  - Drop all inline assembly, SIMD intrinsics based on C code, SSE2, SSE4.1 and AVX2 optimizations
  - Single DLL, optimizations for different CPU instruction sets are chosen automatically.
  - Reports MT Modes for Avisynth+: MT_NICE_FILTER
  - Added Y, YV411, YV16 and YV24, 10-16 bits 4:2:0, 4:2:2, 4:4:4, planar RGB(A) 8-16 bits support besides existing YV12
  - (YUY2 support with workaround: internally converted to YV16, process and convert back 
    conversion is lossless, but slower than using native YV16)
  - New parameters: bool "luma", bool "chroma" (default true) to disable processing of luma/chroma planes

And an interesting benchmark:

ColorBars(pixel_type = "YV12")
FluxSmoothST(12,10,opt=0) # 0: C, #1: SSE2, #2: SSE4.1, #3: AVX2
#or:
#FluxSmoothT(12,opt=0) # 0: C, #1: SSE2, #2: SSE4.1, #3: AVX2

# Benchmarks i7-7770 Win10 Avisynth+ r2837 (fps)

# 32 bit LLVM 8.0           32 bit Visual C++ 15.9
#    opt=0  1    2    3     opt=0  1   2    3
# ST 1765 1882 2509 4776    1380 1540 1840 3730 
#  T 1834 3539 6116 12658   1530 3390 5210 10860

# 64 bit LLVM 8.0           64 bit Visual C++ 15.9
# ST 2020 1970 2520 5100    1520 1700 2048  4303 
#  T 2220 3600 6570 12700   2110 3630 5306 13100