harfbuzz

Commit Graph

Author	SHA1	Message	Date
Garret Rieger	9121ed0cec	[subset] Improve sharing of Ligature subtables. Ligature subtables use virtual links to enforce an ordering constraint between the subtables and the coverage table. Unfortunately this has the sideeffect of prevent the subtables from being shared by another Ligature with a different coverage table since object equality compares all links real and virtual. This change makes virtual links stored separately from real links and updates the equality check to only check real links. If an object is de-duped any virtual links it has are merged into the object that replaces it.	2021-12-01 08:37:04 -07:00
Garret Rieger	d9660fd58a	[subset] Make cmap4 packing more optimal. The current CMAP4 implementation uses whatever the current codepoint ranges are and then encodes them as indivudal glyph ids or as a delta if possible. However, it's often possible to save bytes by splitting up existing ranges and encoding parts of them using deltas where the cost of splitting the range is less than encoding each glyph individual.	2021-11-26 13:21:50 -07:00
Qunxin Liu	903a6baece	[subset] layout_features filtering fix we should not use get_size (), which returns length * item_size	2021-11-25 11:24:41 -07:00

Author

SHA1

Message

Date

Garret Rieger

9121ed0cec

[subset] Improve sharing of Ligature subtables.

Ligature subtables use virtual links to enforce an ordering constraint between the subtables and the coverage table. Unfortunately this has the sideeffect of prevent the subtables from being shared by another Ligature with a different coverage table since object equality compares all links real and virtual. This change makes virtual links stored separately from real links and updates the equality check to only check real links. If an object is de-duped any virtual links it has are merged into the object that replaces it.

2021-12-01 08:37:04 -07:00

Garret Rieger

d9660fd58a

[subset] Make cmap4 packing more optimal.

The current CMAP4 implementation uses whatever the current codepoint ranges are and then encodes them as indivudal glyph ids or as a delta if possible. However, it's often possible to save bytes by splitting up existing ranges and encoding parts of them using deltas where the cost of splitting the range is less than encoding each glyph individual.

2021-11-26 13:21:50 -07:00

Qunxin Liu

903a6baece

[subset] layout_features filtering fix

we should not use get_size (), which returns length * item_size

2021-11-25 11:24:41 -07:00

3 Commits