Release 1.0.12

be5invis · May 12, 2024 · 66f5706 · 66f5706
2 parents 56b471e + f91bf1f
commit 66f5706
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Showing 165 changed files with 692 additions and 469 deletions.
diff --git a/make/pass2/index.mjs b/make/pass2/index.mjs
@@ -29,6 +29,8 @@ export default (async function makeFont(argv) {
 	simplifySingleSub(main.gsub, "vert");
 	simplifySingleSub(main.gsub, "vrt2");
 
+	padCvtToAppeaseFreetype(main);
+
 	await writeFont(argv.o, main);
 });
 
@@ -71,3 +73,13 @@ function isFarEastLanguage(tag) {
 	tag = tag.trim();
 	return tag === "JAN" || tag === "KOR" || tag === "ZHS" || tag === "ZHT" || tag === "ZHH";
 }
+
+// Freetype limits the "available" twilight point count to 2 * max(glyph points, cvt size).
+// Thus, we pad the CVT to make sure all twilights could be properly accessed.
+function padCvtToAppeaseFreetype(font) {
+	if (!font.cvt || !font.maxp) return;
+	while (2 * font.cvt.items.length < font.maxp.maxTwilightPoints) {
+		font.cvt.items.push(0);
+		font.cvt.items.push(0);
+	}
+}