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coretext: don't emit 0 codepoints for special fonts

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Qwerasd
2024-10-08 23:47:35 -04:00
parent 7686cacde6
commit 5730242596
1 changed files with 6 additions and 0 deletions
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6
src/font/shaper/coretext.zig
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@ -361,6 +361,12 @@ pub const Shaper = struct {
self.cell_buf.clearRetainingCapacity();
try self.cell_buf.ensureTotalCapacity(self.alloc, state.codepoints.items.len);
for (state.codepoints.items) |entry| {
// We use null codepoints to pad out our list so indices match
// the UTF-16 string we constructed for CoreText. We don't want
// to emit these if this is a special font, since they're not
// part of the original run.
if (entry.codepoint == 0) continue;
self.cell_buf.appendAssumeCapacity(.{
.x = @intCast(entry.cluster),
.glyph_index = @intCast(entry.codepoint),