kc3-lang/freetype/src/truetype

• Show log

  Commit

• Hash : 115e9275
  Author :
  Date : 2023-05-19T12:11:45
  

  [truetype] Reduce heap allocation of `deltaSet` variation data. `deltaSet` is an array of packed integers that can be 32 bits, 16 bits, or 8 bits. Before this change, these values were unpacked to 32-bit integers. However, this can cause big heap allocations, e.g., around 500 KByte for 'NotoSansCJK'. To reduce this amount, store the packed integers and unpack them just before passing to the calculation. At calculation time, due to the variable length of region indices, temporary heap allocations are necessary. This heap allocation is not negligible and visible in `ftbench` results. So, use stack-allocated arrays for short array calculations. Fixes #1230. * include/freetype/internal/ftmmtypes.h (GX_ItemVarDataRec): New fields `wordDeltaCount` and `longWords`. * src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Load packed data. (tt_var_get_item_delta): Unpack data before applying.

• Files

• module.mk
• rules.mk
• truetype.c
• ttdriver.c
• ttdriver.h
• tterrors.h
• ttgload.c
• ttgload.h
• ttgxvar.c
• ttgxvar.h
• ttinterp.c
• ttinterp.h
• ttobjs.c
• ttobjs.h
• ttpload.c
• ttpload.h
• ttsubpix.c
• ttsubpix.h

• Properties

• Git HTTP	https://git.kmx.io/kc3-lang/freetype.git
  Git SSH	git@git.kmx.io:kc3-lang/freetype.git
  Public access ?	public
  Description	https://gitlab.freedesktop.org/freetype/freetype
  Users
  Tags