kc3-lang/freetype/src/smooth

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• Hash : b6c11d49
  Author :
  Date : 2021-08-30T07:09:53
  

  [smooth] Reduce shift in multiply-shift optimization.
  
  * src/smooth/ftgrays.c (FT_UDIVPREP, FT_UDIV): Reduce shift.
  
  Smaller shifts that keep the division operands of FT_UDIVPREP within
  32 bits result in slightly faster divisions, which is noticeable in
  the overall performance.  The loss of precision is tolerable until the
  divisors (the components dx and dy) approach 32 - PIXEL_BITS. With
  PIXEL_BITS = 8, this corresponds to 65,000 pixels or the bitmap size
  that we refuse to render anyway.
  
  Using `ftbench -p -s60 -t5 -bc timesi.ttf`,
  
  Before: 8.52 us/op
  After:  8.32 us/op
  

• Files

• ftgrays.c
• ftgrays.h
• ftsmerrs.h
• ftsmooth.c
• ftsmooth.h
• module.mk
• rules.mk
• smooth.c

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