diff options
Diffstat (limited to 'tex/context/base/mkiv/font-oup.lua')
| -rw-r--r-- | tex/context/base/mkiv/font-oup.lua | 93 |
1 files changed, 70 insertions, 23 deletions
diff --git a/tex/context/base/mkiv/font-oup.lua b/tex/context/base/mkiv/font-oup.lua index 2c49bc993..93a1d526e 100644 --- a/tex/context/base/mkiv/font-oup.lua +++ b/tex/context/base/mkiv/font-oup.lua @@ -2564,6 +2564,34 @@ end -- Because we pack we cannot mix tables and numbers so we can only turn a whole set in -- format kern instead of pair. +local strip_pairs = true + +local compact_pairs = true +local compact_singles = true + +local merge_pairs = true +local merge_singles = true +local merge_substitutions = true +local merge_alternates = true +local merge_multiples = true +local merge_ligatures = true +local merge_cursives = true +local merge_marks = true + +directives.register("otf.strip.pairs", function(v) strip_pairs = v end) + +directives.register("otf.compact.pairs", function(v) compact_pairs = v end) +directives.register("otf.compact.singles", function(v) compact_singles = v end) + +directives.register("otf.merge.pairs", function(v) merge_pairs = v end) +directives.register("otf.merge.singles", function(v) merge_singles = v end) +directives.register("otf.merge.substitutions", function(v) merge_substitutions = v end) +directives.register("otf.merge.alternates", function(v) merge_alternates = v end) +directives.register("otf.merge.multiples", function(v) merge_multiples = v end) +directives.register("otf.merge.ligatures", function(v) merge_ligatures = v end) +directives.register("otf.merge.cursives", function(v) merge_cursives = v end) +directives.register("otf.merge.marks", function(v) merge_marks = v end) + local function checkpairs(lookup) local steps = lookup.steps local nofsteps = lookup.nofsteps @@ -2580,7 +2608,8 @@ local function checkpairs(lookup) local v = d2[1] if v == true then -- all zero - elseif v and (v[1] ~= 0 or v[2] ~= 0 or v[4] ~= 0) then + -- elseif v and (v[1] ~= 0 or v[2] ~= 0 or v[4] ~= 0) then + elseif v and (v[1] ~= 0 or v[2] ~= 0 or v[3] ~= 0 or v[4] ~= 0) then -- vkrn has v[3] ~= 0 return false end end @@ -2617,29 +2646,39 @@ local function checkpairs(lookup) return kerned end -local compact_pairs = true -local compact_singles = true - -local merge_pairs = true -local merge_singles = true -local merge_substitutions = true -local merge_alternates = true -local merge_multiples = true -local merge_ligatures = true -local merge_cursives = true -local merge_marks = true - -directives.register("otf.compact.pairs", function(v) compact_pairs = v end) -directives.register("otf.compact.singles", function(v) compact_singles = v end) +local function strippairs(lookup) + local steps = lookup.steps + local nofsteps = lookup.nofsteps + local stripped = 0 -directives.register("otf.merge.pairs", function(v) merge_pairs = v end) -directives.register("otf.merge.singles", function(v) merge_singles = v end) -directives.register("otf.merge.substitutions", function(v) merge_substitutions = v end) -directives.register("otf.merge.alternates", function(v) merge_alternates = v end) -directives.register("otf.merge.multiples", function(v) merge_multiples = v end) -directives.register("otf.merge.ligatures", function(v) merge_ligatures = v end) -directives.register("otf.merge.cursives", function(v) merge_cursives = v end) -directives.register("otf.merge.marks", function(v) merge_marks = v end) + for i=1,nofsteps do + local step = steps[i] + if step.format == "pair" then + local coverage = step.coverage + for g1, d1 in next, coverage do + for g2, d2 in next, d1 do + if d2[2] then + --- true or { a, b, c, d } + -- else + -- local v = d2[1] + -- if v == true then + -- d1[g2] = nil + -- stripped = stripped + 1 + -- elseif v and (v[1] == 0 and v[2] == 0 and v[4] == 0) then -- vkrn can have v[3] ~= 0 + -- d1[g2] = nil + -- stripped = stripped + 1 + -- end + -- end + elseif d2[1] == true then + d1[g2] = nil + stripped = stripped + 1 + end + end + end + end + end + return stripped +end function readers.compact(data) if not data or data.compacted then @@ -2648,6 +2687,7 @@ function readers.compact(data) data.compacted = true end local resources = data.resources + local stripped = 0 local merged = 0 local kerned = 0 local allsteps = 0 @@ -2678,6 +2718,7 @@ function readers.compact(data) merged = merged + mergesteps_4(lookup) end elseif kind == "gpos_single" then + -- maybe also strip zeros here if merge_singles then merged = merged + mergesteps_1(lookup,true) end @@ -2685,6 +2726,9 @@ function readers.compact(data) kerned = kerned + checkkerns(lookup) end elseif kind == "gpos_pair" then + if strip_pairs then + stripped = stripped + strippairs(lookup) -- noto cjk from 24M -> 8 M + end if merge_pairs then merged = merged + mergesteps_2(lookup) end @@ -2726,6 +2770,9 @@ function readers.compact(data) compact("sequences") compact("sublookups") if trace_optimizations then + if stripped > 0 then + report_optimizations("%i zero positions stripped before merging",stripped) + end if merged > 0 then report_optimizations("%i steps of %i removed due to merging",merged,allsteps) end |