go.*,text: update go-text to pick up font transformation caching

This commit picks up improvements in upstream go-text that (among other things)
allow the shaper to reuse a lot of information when shaping the same font face
multiple times (using an LRU cache to keep that information available). I've
tried to pick a reasonable default LRU size of 32 faces.

My simple benchmarks indicate a definitive performance gain and reduction in
memory use across the board, which is especially noticable for complex fonts
like arabic and emoji.

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>

This commit is contained in:

Chris Waldon

2023-04-05 12:26:06 -04:00

committed by

Elias Naur

parent 73787b8478

commit 6937a5dd1f

3 changed files with 4 additions and 3 deletions

									
										text/shaper.go
									
		+1
		
												View File
												
				@@ -200,6 +200,7 @@ func NewShaper(collection []FontFace) *Shaper {

					for _, f := range collection {

						l.shaper.Load(f)

					}

					l.shaper.shaper.SetFontCacheSize(32)

					return l

				}