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[GSUB] MultipleSubst / AlternateSubst >64k expansion #32

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behdad opened this issue Sep 19, 2021 · 1 comment
Closed

[GSUB] MultipleSubst / AlternateSubst >64k expansion #32

behdad opened this issue Sep 19, 2021 · 1 comment
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Implemented Implemented in HarfBuzz or doesn't need to Layout >64k expansion
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BE 2.0 spec
Milestone
BE 2.0 ~= HB 5.0 ...

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@behdad
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behdad commented Sep 19, 2021 •
edited

The Coverage table part is covered in #30.

Add one new format, which are structurally the same across the two (as are the existing format1's):

struct MultipleSubstFormat2 {
  uint16 format; // == 2
  Offset24To<Coverage> coverage;
  Array16Of<Offset24To<Sequence24>> sequences;
};

typedef ArrayOf<GlyphID24> Sequence24;

struct AlternateSubstFormat2 {
  uint16 format; // == 2
  Offset24To<Coverage> coverage;
  Array16Of<Offset24To<AlternateSet24>> alternateSets;
};

typedef ArrayOf<GlyphID24> AlternateSet24;
@behdad behdad added this to the BE 2.0 ~= OT 2.0 milestone Sep 19, 2021
@behdad behdad changed the title [Layout/GSUB] MultipleSubst / AlternateSubst >64k expansion [Layout/GSUB] MultipleSubst / AlternateSubst >64k expansion Sep 19, 2021
@behdad behdad mentioned this issue Sep 19, 2021
Closed
@behdad behdad added the Layout label Sep 19, 2021
@behdad behdad changed the title [Layout/GSUB] MultipleSubst / AlternateSubst >64k expansion [GSUB] MultipleSubst / AlternateSubst >64k expansion Sep 19, 2021
@behdad behdad added this to To do in BE 2.0 spec Sep 22, 2021
behdad added a commit to fonttools/fonttools that referenced this issue Jul 4, 2022
@behdad
[>64k:layout:MultipleSubst] Implement and add merger upgrade logic
d3c9ff7 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to fonttools/fonttools that referenced this issue Jul 4, 2022
@behdad
[>64k:layout:AlternateSubst] Implement & add merger upgrade logic
5c756aa 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to fonttools/fonttools that referenced this issue Jul 4, 2022
@behdad
[>64k:layout:MultipleSubst] Implement and add merger upgrade logic
fdb9b1d 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to fonttools/fonttools that referenced this issue Jul 4, 2022
@behdad
[>64k:layout:AlternateSubst] Implement & add merger upgrade logic
9ad5d43 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 6, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
7907809 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 6, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
f6d2e3a 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
0bc9580 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
9c67826 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
2bbf624 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
9fd5f2a 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
62e003c 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
4a10ef8 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
d396d07 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
5adbf1c 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
346d61f 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
3efa669 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to fonttools/fonttools that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:MultipleSubst] Implement and add merger upgrade logic
3ea5b5b 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to fonttools/fonttools that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:AlternateSubst] Implement & add merger upgrade logic
a158426 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
911052f 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
f3e50dd 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to fonttools/fonttools that referenced this issue Jul 11, 2022
@behdad
[>64k:layout] Fix MultipleSubstFormat2 layout
13a63b3 
harfbuzz/boring-expansion-spec#32
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 11, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
38c259b 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 11, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
8db83f5 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
b80da3c 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
a62e608 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
@behdad behdad added the Implemented Implemented in HarfBuzz or doesn't need to label Jul 12, 2022
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:MultipleSubst] Implement format 2
a58a486 
Implements part of harfbuzz/boring-expansion-spec#32

Subset is NOT updated to lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:AlternateSubst] Implement format 2
27d2421 
Implements rest of harfbuzz/boring-expansion-spec#32

Subset does NOT lower format.
behdad added a commit to fonttools/fonttools that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:MultipleSubst] Implement and add merger upgrade logic
c4d95e3 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to fonttools/fonttools that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:AlternateSubst] Implement & add merger upgrade logic
d67dcab 
Implements harfbuzz/boring-expansion-spec#32
behdad added a commit to fonttools/fonttools that referenced this issue Jul 12, 2022
@behdad
[>64k:layout] Fix MultipleSubstFormat2 layout
0b5d81d 
harfbuzz/boring-expansion-spec#32
@behdad
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behdad commented Mar 6, 2023

Speced: https://github.com/harfbuzz/boring-expansion-spec/blob/main/beyond-64k.md
Implemented in HarfBuzz.

@behdad behdad closed this as completed Mar 6, 2023
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BE 2.0 spec
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